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1

Ovarian follicle growth in the catfish Iheringichthys labrosus (Siluriformes: Pimelodidae).  

PubMed

The morphofunctional organisation of the female reproductive system, the oocyte growth and the follicular envelope ultrastructure were studied by the first time in the catfish Iheringichthys labrosus from Upper Paraná River basin, Southeastern Brazil, in order to contribute to the knowledge of the reproductive behaviour strategies of this species. As in other Neotropical freshwater siluriforms, the ovaries are of the cystovarian type, the oocytes develop in an asynchronous pattern and mature oocytes are released in clusters in the ovarian lumen, being transported through the oviduct to the urogenital papilla. During the primary growth, nuclear material is transported to the ooplasm, forming the yolk nucleus, where proliferate membranous organelles. The onset of the zona radiata formation occurs during the late perionucleolar stage with the deposition of the outer layer. At the vitellogenic stage, this envelope reaches 6.35+/-0.84microm of thickness, being constituted by three distinct layers crossed by pore-canals containing oocyte and follicular cells processes. Cytochemical analyses evidence neutral glycoproteins in cortical alveoli, yolk globules and zona radiata. Follicular cells with squamous shape during the primary growth acquire synthetic activity at the secondary growth, reaching 37.82+/-4.72mum in height at the mature vitellogenic follicles. These cells accumulate sulphated polysaccharides in large electron-lucent vesicles during the vitellogenic stage which are possibly secreted to form a mucous coat at the egg surface. These evidences suggest that I. labrosus may have adhesive eggs as also detected in other Neotropical freshwater Siluriformes. PMID:16996098

Santos, J E; Padilha, G E V; Bomcompagni-Júnior, O; Santos, G B; Rizzo, E; Bazzoli, N

2006-09-22

2

Distribution and habitat suitability index model for the Andean catfish Astroblepus ubidiai (Pisces: Siluriformes) in Ecuador  

Microsoft Academic Search

In conservation biology there is a basic need to determine habitat suitability and availability. Astr oblepus ubidiai (Siluriforms), the only native fish in the highlands of Imbabura province in the Ecuadorian Andes, was abundant in the past in the Imbakucha watershed and adjacent drainages, but currently it is restricted to a few isolated refuges. Conservation actions are needed if this

Luis A. Vélez-Espino

2006-01-01

3

Ontogenetic Diet Shifts of a Neotropical Catfish, Pimelodus maculatus (Siluriformes, Pimelodidae): An Ecomorphological Approach  

Microsoft Academic Search

This study analyses the ontogenetic diet shifts of a Neotropical catfish, Pimelodus maculatus (Siluriformes, Pimelodidae), from an ecomorphological standpoint. We collected 241 individuals in the Piracicaba River (Brazil) and, in the laboratory, seven morphometric variables were recorded from each specimen: standard length (SL), body depth, head length, snout length, eye diameter, mouth height and mouth width. After standardizing these measurements

Sidnei Eduardo Lima-Junior; Roberto Goitein

2003-01-01

4

The generic nomenclature of the marine catfishes usually referred to the genus Arius (Osteichthyes-Siluriformes)  

Microsoft Academic Search

1. (1)Tachysurus sinensis Lacepède, 1803, appears to be an unrecognizable siluriform fish from freshwater in China.2. (2)The original painting appears to be no longer available for examination, the engraving published by Lacepède (1803) and the description are inadequate for species identification.3. (3)Tachysurus (type species T. sinensis by monotypy) cannot be referred to the Ariidae for a number of reasons. It

Alwyne Wheeler; Augustine Baddokwaya

1981-01-01

5

KASCADE-Grande: The Grande Array  

NASA Astrophysics Data System (ADS)

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

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

2003-07-01

6

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

7

Ontogeny of the suspensorial and opercular musculature in the suckermouth armoured catfish Ancistrus cf. triradiatus (Loricariidae, Siluriformes)  

Microsoft Academic Search

Several morphological features characterizing Loricariidae or suckermouth-armoured catfishes (Siluriformes, Teleostei) are\\u000a related to their ability to attach onto substrates with their sucker mouth, and to scrape algae and other food items from\\u000a these substrates. Suspensorial and opercular muscles are among those muscles usually involved in respiration (and feeding).\\u000a In several loricariids including the genus Ancistrus, the opercular musculature is decoupled

Tom Geerinckx; Dominique Adriaens

2008-01-01

8

A phylogenetic analysis of the major groups of catfishes (Teleostei: Siluriformes) using rag1 and rag2 nuclear gene sequences.  

PubMed

Higher-level relationships among catfishes were investigated by parsimony, maximum likelihood and Bayesian analyses of two nuclear genes across 110 catfish species representing 36 of 37 families and Conorhynchos (family incertae sedis). Analysis of 3660 aligned base pairs from the rag1 and rag2 genes confirms monophyly of Siluriformes, of most siluriform families and of a number of multifamily groups, some recognized, some novel. South American Loricarioidei are recovered as the sistergroup to other catfishes which are divided into Diplomystidae and Siluroidei. This result contrasts with the prevailing hypothesis that Diplomystidae is the sister to all other catfishes. Monophyly of Siluroidei is supported by rag data including a unique three-codon deletion from rag1. Deep within Siluroidei are 12 large, strongly supported groups with poorly resolved interrelationships. Five are single families: Cetopsidae, Plotosidae, Chacidae, Siluridae and Pangasiidae. Four others are monophyletic taxa ranked here as superfamilies: Clarioidea (Clariidae, Heteropneustidae), Arioidea (Ariidae, Anchariidae), Pimelodoidea (Pimelodidae, Pseudopimelodidae, Heptapteridae, Conorhynchos), Ictaluroidea (Ictaluridae, Cranoglanididae). South American Doradoidea (Doradidae, Auchenipteridae) and Aspredinidae are a sistergroup pair. Sisoroidea (without Aspredinidae), Ailia+Laides, Horabagridae, and Bagridae (without Rita) form a large, predominantly Asian clade, "Big Asia." Mochokidae, Malapteruridae, Amphiliidae, Claroteidae, and African schilbids are united as a species-rich African clade, "Big Africa." The three large continental clades, "Big Asia," "Big Africa" and Neotropical Loricarioidei suggest a prevalence of intracontinental diversification of catfishes. South America is the home of the Gymnotiformes, putative sistergroup of catfishes, plus two of the deepest siluriform clades, Loricarioidei and Diplomystidae, thus suggesting an ancient siluriform presence if not origin there. The rag phylogeny does not identify any African-South American catfish clade. The well-known African-Asian relationships within families Clariidae and Bagridae are confirmed, as is the recently found North American-Asian relationship between Ictaluridae and Cranoglanididae. PMID:16876440

Sullivan, John P; Lundberg, John G; Hardman, Michael

2006-06-10

9

Haematological and blood biochemical characteristics of Glyptosternum maculatum (Siluriformes: Sisoridae) in Xizang (Tibet).  

PubMed

This study investigated the haematological and blood biochemical characteristics of Glyptosternum maculatum. The haematological and biochemical parameters were measured in 30 adult fish collected from Nyingchi Reach of Yarlung Zangbo River in Tibet. The red blood cell count (RBC), haemoglobin concentration (Hb), haematocrit (Hct), erythrocyte osmotic fragility (maxEof and minEof), the erythrocyte sedimentation rate, mean cell volume (MCV), mean cellular haemoglobin content (MCH), and mean cell haemoglobin concentration (MCHC) were determined. Compared with other Siluriformes fishes, G. maculatum showed similar mean values for Hct, Hb, MCH, and MCHC and had slightly lower RBC and higher MCV. The biochemical parameters were assayed including alanine aminotransferase, aspartate aminotransferase (AST), alkaline phosphatase, total protein, albumin, globulin, albumin/globulin ratio, total bilirubin, direct bilirubin, urea, creatinine, glucose, total cholesterol, and triglyceride. The result showed that the value of AST in G. maculatum was obviously higher than that in Rhamdia quelen as well as in Silurus merdionalis. PMID:19757131

Zhang, Huijuan; Xie, Congxin; Li, Dapeng; Xiong, Dongmei; Liu, Haiping; Suolang, Sizhu; Shang, Peng

2009-09-10

10

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, Aurélie; Fara, Emmanuel; Otero, Olga

2006-01-01

11

Cestodes (Caryophyllidea) of the stinging catfish Heteropneustes fossilis (Siluriformes: Heteropneustidae) from Asia.  

PubMed

The stinging catfish Heteropneustes fossilis (Bloch) (Siluriformes: Heteropneustidae) has been reported to harbor as many as 19 species of caryophyllidean tapeworms (Cestoda) of 11 genera in tropical Asia (Indomalayan zoogeographical region). However, a critical review of the species composition has shown that only 1 species, Lucknowia fossilisi Gupta, 1961 (Lytocestidae), is a specific parasite of H. fossilis. Three other species, Djombangia penetrans Bovien, 1926 (syn., Djombangia caballeroi Sahay and Sahay, 1977 ), Pseudocaryophyllaeus ritai Gupta and Singh, 1983 (syn. Pseudocaryophyllaeus lucknowensis Gupta and Sinha, 1984 ), and Pseudocaryophyllaeus tenuicollis (Bovien, 1926) Ash, Scholz, Oros and Kar, 2011 (syn. P. mackiewiczi Gupta and Parmar, 1982 ), were found only once. Lucknowia fossilisi is redescribed on the basis of new material collected in West Bengal and voucher specimens from Maharashtra, India. A total of 9 species of Capingentoides, Lucknowia, Lytocestus, Pseudoadenoscolex, Pseudocaryophyllaeus, Pseudoheteroinverta, and Sukhapatae are newly synonymized with L. fossilisi and previous synonymies of 9 other species, proposed by Hafeezulah (1993), are confirmed. Generic diagnosis of Lucknowia Gupta, 1961 is amended. In addition, 1 species of Pseudobatrachus and 2 species of the monotypic genera Pseudoneckinverta and Sudhaena are invalidated as nomina nuda. PMID:21561334

Ash, Anirban; Scholz, Tomáš; Oros, Mikuláš; Levron, Céline; Kar, Pradip Kumar

2011-05-11

12

A new dispersed element in the genome of the catfish Hisonotus leucofrenatus (Teleostei: Siluriformes: Hypoptopomatinae)  

PubMed Central

Eight restriction enzymes were used in the prospection and isolation of repetitive sequences in the genome of the catfish Hisonotus leucofrenatus, a siluriform fish species that presents a large heterochromatic block in the W chromosome. In the tested enzymes, only the BamHI enzyme revealed a distinct band of 224 bp G+C value of 37%. In comparative analyses with sequences already available in the GenBank, the BamHI fragment sequence showed similarity with part of a Lepidoptera transposon. Fluorescent in situ hybridization (FISH) revealed that this sequence presents a dispersed pattern in the genome of H. leucofrenatus, forming clusters in some chromosome pairs in the pericentromeric region, which frequently are rich in constitutive heterochromatin. Based on the analysis performed, it can be inferred that the HLBam fragment constitutes a genomically dispersed transposon type element. It can be considered that the findings in this study can contribute to a better understanding of the organization and distribution of transposable elements in the genome of teleost fish.

Oliveira, Claudio; Foresti, Fausto

2011-01-01

13

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

14

Rio Grande Project.  

National Technical Information Service (NTIS)

At the twentieth century's first light, just as the Rio Grande Project reached completion, the mythic legend of the American West was beginning to wrap its two fists around the collective national conscious. Over the succeeding decades, the words 'Rio Gra...

R. Autobee

1994-01-01

15

Grand Rapids Case Study  

ERIC Educational Resources Information Center

|In the fall of 1973, Grand Rapids, Michigan, hosted an ambitious citywide exhibit of monumental public sculpture. Thirteen public sculptures were placed around the city as the result of cooperation between civic leaders (plus the co-sponsorship of the museum) and art professionals. (BT)|

Vrchota, Janet

1974-01-01

16

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

17

The Grand Time Game  

NSDL National Science Digital Library

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

18

The Grand Challenge  

NSDL National Science Digital Library

This lesson introduces the MRI Safety Grand Challenge question. Students are asked to write journal responses to the question and brainstorm what information they will need to answer the question. The ideas are shared with the class and recorded. Students then watch a video interview with a real life researcher to gain a professional perspective on MRI safety and brainstorm any additional ideas. The associated activity provides students the opportunity to visualize magnetic fields.

VU Bioengineering RET Program, School of Engineering,

19

Petite et grande taille  

Microsoft Academic Search

RésuméUne petite taille ou une grande taille doit être considérée d’abord comme une variation normale de la taille. Elle appartient au continuum de la courbe de distribution gaussienne normale, qui définit les limites inférieure et supérieure de la normale comme étant les 3ème et 97ème percentiles. Dans ce contexte, il est très important de différencier des variations normales de la

Jurgen H. Bramswig

2007-01-01

20

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

21

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

Al Gil de Pertierra, Alicia; de Chambrier, Alain

2012-11-12

22

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

23

Maternal outcome of grand multipara.  

PubMed

This prospective comparative study was conducted to determine the incidence of grand multiparity, compare the maternal outcome of grand multiparity to low parity and identify the frequency of maternal mortality associated with obstetrical complications of grand multiparity. It was carried out in the Obstetric and Gynaecology department of Rangpur Medical College Hospital, Rangpur, during the period of 1st January to 30th September' 2003. All pregnant (>28 weeks) parous women were included and primigravida were excluded. A total 2728 pregnant patients were initially recruited on the study. From them 200 cases were randomly selected. Among them 100 cases were grand multipara (parity 4 and above) comprising study groups and 100 cases were non grand multipara (parity 1-3) consisting of control group. All relevant maternal parameter were recorded and then compared between study group and control group. According to this study the incidence of grand multiparity is 9.8%. Among the grand multipara patient 95% were suffering from anaemia of different severity (p<0.05). The incidence of hypertension and gestational diabetes in grand multipara were significantly higher than non grand multipara (45% vs. 12%) and (12% vs. 02%) respectively. The other complications like placenta praevia, abruptio placentae, multiple pregnancy, malpresentations, postpartum haemorrhage, ruptured uterus were significantly higher among grand multipara and statistically significant results were observed. Proportion of women who underwent caesarean section was also high in study group (32% vs. 21% p<0.05). During the study period 7 maternal death were observed in grand multipara and 1 maternal death in non grand multipara (p<0.05). PMID:21804498

Shahida, S M; Islam, M A; Begum, S; Hossain, M A; Azam, M S

2011-07-01

24

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.

25

Le grand épiploon Anatomie chirurgicale  

Microsoft Academic Search

Résumé Si l'étude anatomique et vasculaire du grand épiploon a été réalisée dans sa plus grande partie avant la fin du XVIIIe siècle, les recherches les plus récentes ont permis d'en préciser certains caractères permettant son emploi en chirurgie réparatrice: constitution, rapports avec le côlon transverse et son méso, valeur fonctionnelle des anastomoses vasculaires, drainage lymphatique. La connaissance parfaite de

J. P. Bodin; P. Gabelle; Y. Bouchet; M. Caix; B. Descottes

1981-01-01

26

78 FR 39998 - Safety Zone; Grand Haven 4th of July Fireworks; Grand River; Grand Haven, MI  

Federal Register 2010, 2011, 2012, 2013

...Safety Zone; Grand Haven 4th of July Fireworks; Grand...Guard respects the First Amendment rights of protesters. Protesters...Constitutionally Protected Property Rights. 9. Civil Justice Reform...Safety Zone; Grand Haven 4th of July fireworks;...

2013-07-03

27

Course on Grand Unification  

NASA Astrophysics Data System (ADS)

Although this is a field with a long history and a number of excellent reviews I tried to make this self contained, thus the section devoted to the group theory of SU(N) and SO(2N). For a newcomer in the field, this is must in my opinion. The material on spinors in SO(2N) is especially useful, and simple examples of SO(2), SO(4) and SO(6) are given in some detail. This should enable the reader to follow the physics and mathematics of spinors in SO(10) later on. The sections on SU(5) and Left-Right symmetry are fairly pedagogical and the reader armed with the knowledge of the first section should have no problems in following them. The last section devoted to the SO(10) theory, probably the most motived grand unified theory starts out being pedagogical, but the part which addresses the phenomenology of the ordinary and supersymmetric version is somewhat more difficult. If found too hard, it should be skipped in the first reading. It could be useful though for those interested in fermion masses and mixings. Throughout the text, I have included some exercises which I recommend.

Senjanovi?, Goran

28

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

29

Grand Unification: Quo Vadis Domine.  

National Technical Information Service (NTIS)

The present theoretical and experimental situation with grand unification is summarized. The issues of proton decay and the Weinberg angle are addressed, going through the predictions of both the standard SU(5) theory and its supersymmetric extension. The...

G. Senjanovic

1985-01-01

30

Building Portfolio: Grand Rapids, Minnesota  

ERIC Educational Resources Information Center

|Grand Rapids, Minnesota, built a high school on 196 lakefront acres. Outdoor openness is matched with an imaginative indoor open space'' concept. The school's philosophy centers on career education and is especially committed to programs in forestry and horticulture. (WM)|

Demarest, Donald

1973-01-01

31

Neotropical Monogenoidea. 57. Revision and phylogenetic position of Scleroductus Jara & Cone, 1989 (Gyrodactylidae), with descriptions of new species from the Guatemalan chulin Rhamdia guatemalensis (Günther) (Siluriformes: Heptapteridae) in Mexico and the barred sorubim Pseudoplatystoma fasciatum (Linnaeus) (Siluriformes: Pimelodidae) in Brazil.  

PubMed

The diagnosis of Scleroductus Jara & Cone, 1989 (Gyrodactylidae) is amended to include viviparous species having a large spine associated with the ejaculatory duct within the male copulatory organ, two band-like projections originating from the posterior margin of the superficial bar and hooks evenly distributed along the haptoral margins. Two new species of Scleroductus are described from the external surfaces of siluriform fishes of Mexico and Brazil: Scleroductus lyrocleithrum n. sp. from the Guatemalan chulin Rhamdia guatemalensis (Günther) (Heptapteridae) in a cenote on the Yucatan Peninsula, Mexico; and Scleroductus angularis n. sp. from the barred sorubim Pseudoplatystoma fasciatum (Linnaeus) (Pimelodidae) in the Rio Tocantins, Tocantins, Brazil. Scleroductus sp. is recorded from the jundiá Rhamdia quelen (Quoy & Gaimard) (Heptapteridae) in the Iguaçu drainage of southern Brazil. Phylogenetic analyses of 18S rDNA suggest that Scleroductus (represented in the analyses by Scleroductus sp. from R. quelen), Ieredactylus Schelkle, Paladini, Shinn, King, Johnson, van Oosterhout, Mohammed & Cable, 2011 (represented by its type-species) and Gyrodactyloides Bychowsky, 1947 (represented by G. bychowskii Al'bova, 1948) comprise the sister taxon to the remaining viviparous gyrodactylids, with Scleroductus serving as the sister group to Ieredactylus + Gyrodactyloides. The clade containing the three taxa is supported by two putative synapomorphic features: two band-like projections (R1 sclerites) originating from the posterior margin of the superficial bar and a large spine associated with the ejaculatory duct within the male copulatory organ. PMID:23263939

Kritsky, Delane C; Boeger, Walter A; Mendoza-Franco, Edgar F; Vianna, Rogério T

2012-12-15

32

Redescription of Houssayela sudobim (Woodland, 1935) (Cestoda: Proteocephalidea), a parasite of Pseudoplatystoma fasciatum (Pisces: Siluriformes) from the River Amazon.  

PubMed

The proteocephalidean cestode Houssayela sudobim (Woodland, 1935), the type and only species of Houssayela Rego, 1987, is redescribed on the basis of re-examination of its type-specimens and freshly collected material found in the intestine of the barred sudobim Pseudoplatystoma fasciatum (Siluriformes: Pimelodidae) from the River Amazon in Peru. The validity of the genus is confirmed, but its diagnosis is amended because suckers possess four pairs of cone-shaped (papilla-like) projections on their anterior margins (rather than 16, as reported in the original description), the actual number of testes is more than 400 in a proglottis (not 150 as given by Woodland, 1935) and the vitelline follicles form one dorsolateral medullary band and one lateral cortical band on both sides of proglottides. In addition, the distal (terminal) portion of the vagina has a double sphincter and the cirrus-sac has very thick walls; neither of these characteristics was mentioned in the original description. The specimen collected in Peru represents the first record of the species since its original description in 1935. PMID:16315076

de Chambrier, Alain; Scholz, Tomás

2005-11-01

33

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

PubMed

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

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

2011-01-18

34

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

PubMed

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

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

35

Three new species of Demidospermus (Monogenea: Dactylogyridae) parasitic on Brachyplatystoma filamentosum (Siluriformes: Pimelodidae) from the Araguaia River, Brazil.  

PubMed

Three new species of dactylogyrids (Monogenea) from the Araguaia River in Brazil are described herein. Specimens of Demidospermus ceccarellii n. sp., Demidospermus brachyplatystomae n. sp., and Demidospermus araguaiaensis n. sp. were collected from the gills of the siluriform fish, Brachyplatystoma filamentosum (Lichtenstein, 1819). The 3 new species can be easily distinguished from their congeners by the shape of the male copulatory organ (MCO) and accessory piece. Demidospermus ceccarellii n. sp. presents a J-shaped and robust MCO, a base with a short sclerotized margin, and a slightly curved and robust accessory piece with the base slightly dilated. In contrast, D. brachyplatystomae n. sp. has a thin MCO forming an incomplete ring, a base with an irregular sclerotized margin, and a long and curved accessory piece with a wider distal portion. Demidospermus araguaiaensis n. sp. has a thin MCO with a base directly coupled to the accessory piece and an articulated accessory piece that is sinuous in shape in the distal portion. In addition, the 3 species present haptoral hooks similar in shape and size and, thus, were compared in detail with the other Demidospermus species with this particular characteristic. This is the first record of monogeneans that are parasitic on B. filamentosum. PMID:20486742

Cepeda, Patrícia B; Luque, José L

2010-05-20

36

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

Code of Federal Regulations, 2013 CFR

...Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. 100.906 Section 100.906 Navigation and Navigable Waters...Grand Haven Coast Guard Festival Waterski Show, Grand Haven, MI. (a) Regulated Area. All waters of the Grand River at Waterfront...

2013-07-01

37

Peripartum Anesthesia in Grand-Grand Multiparous Women (?10 Births)  

Microsoft Academic Search

Grand-grand multiparous (GGMP) women, that is women with ?10 births, appear less likely to receive epidural anesthesia for labor\\/delivery than non-GGMP women. Eighteen months’ data were collected. 277\\/16,331 laboring females were GGMP (mean age: 39.6 ± 3.3 years; mean: 11.3 ± 1.5 births), 83\\/258 (32.2%) delivered vaginally with epidural anesthesia versus 7,203\\/15,711 (45.8%) non-GGMP with epidural anesthesia (p < .0051;

Ariel Marks; Jennifer Greenstein; Miriam T. Berger; Joel Shapiro; Deborah Elstein; Alexander Ioscovich

2010-01-01

38

Flavor tests of grand unification  

SciTech Connect

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

Hall, L.J.

1995-10-31

39

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

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

2011-11-10

40

SU(6) grand unified model  

SciTech Connect

A model of grand unified theory based on SU(6) gauge group is proposed. It can accommodate two generations of ordinary fermions with V-A weak coupling and two generations of weird fermions with V+A weak coupling. In this model, a new discrete symmetry is introduced that insures existence of fermions with lower masses when SU(6) gauge symmetry is spontaneously broken. Simple Higgs fields with appropriate vacuum expectation values are chosen, so that the masses of weird fermions are heavier than those of ordinary fermions. This model also gives the same value of Weinberg angle, sin sq of Theta/sub w/ = 3/8, as in the usual SU(5) grand unified model at the grand unified scale.

Dong, J.X.

1986-03-14

41

The KASCADE-Grande Experiment  

NASA Astrophysics Data System (ADS)

A scintillator array (Grande) of large collecting area (700m x 700m) has been set up at Forschungszentrum Karlsruhe in Germany to operate jointly with the existing KASCADE multi-detector experiment. The enlarged EAS experiment provides comprehensive observations of cosmic rays in the primary energy range of 0.1 PeV to 1 EeV, i.e. a full coverage of the primary energy region around the knee. Status and capabilities of the KASCADE-Grande experiment are presented.

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

2003-07-01

42

Thomas Moran: "The Grand Canyon."  

ERIC Educational Resources Information Center

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

Brubaker, Ann

1986-01-01

43

Two Grand Challenges for EC  

Microsoft Academic Search

The field of evolutionary computation has developed and matured significantly over the past 40 years. As with other disciplines attempting to understand complex adaptive systems, this progress has raised as many new and interesting questions as it has answered. In this chapter I describe some of the key open questions by organizing them in the form of two grand challenges:

Kenneth De Jong

44

Grand Prize and Citation Winners.  

ERIC Educational Resources Information Center

|Describes the urban playground redesign and the high school with flexible classroom space that were named Grand Prize Winners of the 2003 "Learning by Design" contest. Also describes the elementary school in an economically depressed area and the renovation of a 1912 high school chosen as Citation Winners. (EV)|

Learning By Design, 2003

2003-01-01

45

Proton decay and grand unification  

Microsoft Academic Search

I review the theoretical and experimental status of proton decay theory and experiment. Regarding theory, I focus mostly but not only on grand unification. I discuss only the minimal, well established SU(5) and SO(10) models, both ordinary and supersymmetric. I show how the minimal realistic extensions of the original Georgi - Glashow model can lead to interesting LHC physics, and

Goran Senjanovic; Goran

2010-01-01

46

Designing a Virtual Grand Tour  

ERIC Educational Resources Information Center

|The Virtual Grand Tour (VGT) is a paradigm for integrating a presentation of an overview of a larger subject with the possibility of launching at any time an exploratory study of a given sub-topic. The name derives from the paradigm's emulation of those 18th-century travels intended to educate (especially) young, affluent British men; today, with…

Hansen, Per Skafte

2004-01-01

47

Temporary Grand Unified Theory in Unphysical World  

NASA Astrophysics Data System (ADS)

We construct grand unified models on an orbifold based on unphysical grand unification. The reduction to the standard model or its supersymmetric one is carried out using a variant of Parisi-Sourlas mechanism and nontrivial Z_2 parity assignment.

Kawamura, Y.

2009-05-01

48

Rio Grande Wetbacks: Mexican Migrant Workers.  

ERIC Educational Resources Information Center

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

Norquest, Carrol

49

External view of the DARPA Grand Challenge  

Microsoft Academic Search

The 2005 DARPA Grand Challenge (DCG) was a 'Huge Leap Forward for Robotics R&D' according to the DARPA Grand Challenge tracking website. Similar to the transatlantic flight competition that spurred commercial flights all over the world, the Grand Challenge was a step forward in the area of navigation for unmanned ground vehicles. However, questions like 'What are the important technologies

Philip A. Frederick; Robert Kania; Justin Teems; Mike Del Rose

2006-01-01

50

Grand Theft Auto: San Andreas  

Microsoft Academic Search

In Grand Theft Auto: San Andreas, the player can drive, run and fly above and around an urban landscape. The way in which significant urban landmarks from\\u000a the real world have been recreated within the space of this video game is bound to impress architects and urban designers.\\u000a Here, the cities of Los Angeles, San Francisco and Las Vegas have

Gregory More

51

Public Diplomacy in Grand Strategy  

Microsoft Academic Search

Despite the growing importance of public diplomacy in current inter- national politics, its practiceFand particularly its relationship with hard powerFremains largely unexplored by diplomatic or strategic theory. This paper applies a grand-strategic perspective to analyze the chal- lenges of ''winning hearts and minds'' in the new communications and normative environments. Israel's experience in the second Intifada serves to draw empirically

BEN D. MOR

2006-01-01

52

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

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

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

53

78 FR 11680 - Notice of Intent To Repatriate Cultural Items: Grand Rapids Public Museum, Grand Rapids, MI  

Federal Register 2010, 2011, 2012, 2013

...Repatriate Cultural Items: Grand Rapids Public Museum, Grand Rapids, MI AGENCY: National...SUMMARY: The Grand Rapids Public Museum, in consultation with the appropriate...items may contact the Grand Rapids Public Museum. DATES: Representatives of any...

2013-02-19

54

Grand unification: quo vadis domine  

SciTech Connect

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

Senjanovic, G.

1985-01-01

55

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

56

Macon-Tolar Grande site  

NASA Astrophysics Data System (ADS)

We show results of the characterization of the Tolar Grande-Macon Range site in the North-West of Argentina. This project is being developed by the IATE Group of Córdoba Observatory in collaboration with ESO in the framework of the E-ELT project. We present and discuss one year of image quality measurements with MASS and DIMM, three years of meteorological data and detailed studies of seismic activity and geo-technical aspects as well as diverse logistic issues. FULL TEXT IN SPANISH

Recabarren, P.; Muriel, H.; García Lambas, D.; Vrech, R.; Renzi, V.; Stasyszyn, F.

57

78 FR 11678 - Notice of Inventory Completion: Grand Rapids Public Museum, Grand Rapids, MI  

Federal Register 2010, 2011, 2012, 2013

...ADDRESSES: Marilyn Merdzinski, Director of Education & Interpretation, Grand Rapids Public...adhering, 1 musket fragment, 1 lot of gun flints, 1 lot of musket balls, 1 metallic...contact Marilyn Merdzinski, Director of Education & Interpretation, Grand Rapids...

2013-02-19

58

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 Chandra’s next decade in this field.

Kaspi, Victoria M.

2010-01-01

59

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

60

Proton decay and grand unification  

NASA Astrophysics Data System (ADS)

I review the theoretical and experimental status of proton decay theory and experiment. Regarding theory, I focus mostly but not only on grand unification. I discuss only the minimal, well established SU(5) and SO(10) models, both ordinary and supersymmetric. I show how the minimal realistic extensions of the original Georgi - Glashow model can lead to interesting LHC physics, and I demonstrate that the minimal supersymmetric SU(5) theory is in perfect accord with experiment. Since no universally accepted model has of yet emerged, I discuss the effective operator analysis of proton decay and some related predictions from a high scale underlying theory. A strong case is made for the improvement of experimental limits, or better the search of, two body neutron decay modes into charged kaons and charged leptons. Their discovery would necessarily imply a low energy physics since they practically vanish in any theory with a desert in energies between MW and MGUT.

Senjanovi?, Goran

2010-02-01

61

Grand unification through gravitational effects  

NASA Astrophysics Data System (ADS)

We systematically study the unification of gauge couplings in the presence of (one or more) effective dimension-5 operators cHG??G??/4Mpl, induced into the grand unified theory by gravitational interactions at the Planck scale. These operators alter the usual condition for gauge-coupling unification, which can, depending on the Higgs content H and vacuum expectation value, result in unification at scales MX significantly different than naively expected. We find nonsupersymmetric models of SU(5) and SO(10) unification, with natural Wilson coefficients c, that easily satisfy the constraints from proton decay. Furthermore, gauge-coupling unification at scales as high as the Planck scale seems feasible, possibly hinting at simultaneous unification of gauge and gravitational interactions. In the Appendix we work out the group theoretical aspects of this scenario for SU(5) and SO(10) unified groups in detail; this material is also relevant in the analysis of nonuniversal gaugino masses obtained from supergravity.

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

2010-02-01

62

Grand rounds: a paradox in medical education.  

PubMed Central

OBJECTIVES: To assess perceptions of the importance and educational purpose of hospital grand rounds among physicians with administrative responsibilities, and to examine organizational aspects of grand rounds as educational events. DESIGN: Descriptive survey by mailed nonanonymous questionnaire. SETTING: All hospitals of more than 100 beds in Calgary. PARTICIPANTS: A total of 150 residency program directors and directors of departments and divisions in hospitals with differing teaching functions. RESULTS: A total of 120 questionnaires (80%) were returned, and the responses of 107 physicians were analysed. Each year in Calgary formal grand rounds activities occupy auditoriums and seminar rooms for more than 2000 hours. Most respondents considered grand rounds to be the main hospital-based continuing medical education activity in their discipline. Aspects of grand rounds considered to be important were updates in research, diagnosis and management, and only one third of the respondents felt that actual patient problems should always be the focus of discussion. The organization and planning of grand rounds revealed a paradox: despite the perceived educational importance, only 13% of rounds were based on a curricular structure, and 16% were based on needs assessments. The grand rounds topic was most often the choice of the presenter. CONCLUSIONS: The quantity of time devoted to grand rounds suggests importance in the routine workings of hospital departments. Grand rounds are used as a showcase for excellence in medical care or recent medical advances. It is paradoxical, therefore, that little interest appears to be shown in educational structure such as curriculum or evaluation of learning. Professional interaction is an inherent objective of traditional grand rounds. Further evaluation of the purpose and educational efficacy of traditional grand rounds is suggested.

Lewkonia, R M; Murray, F R

1995-01-01

63

FOI and Fire at the MGM Grand.  

ERIC Educational Resources Information Center

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

Thompson, William N.; Marie, Janice

64

Proton hexality in local grand unification  

Microsoft Academic Search

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

Stefan Förste; Hans Peter Nilles; Saúl Ramos-Sánchez; Patrick K. S. Vaudrevange

2010-01-01

65

Proton hexality in local grand unification  

Microsoft Academic Search

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

Stefan Förste; Hans Peter Nilles; Saúl Ramos-Sánchez; Patrick K. S. Vaudrevange

2010-01-01

66

Discovery of the Grand Unified Theory  

NASA Astrophysics Data System (ADS)

I have discovered the Grand Unified Theory. Einstein and others missed it because of a major error that crept into physics 400 years ago. This error is the heliocentric universe proposed by Copernicus. My Grand Unified Theory is based on the true nature of our universe, the geocentric model.

Nair, Radhakrishnan

2009-10-01

67

Discovery of the Grand Unified Theory  

Microsoft Academic Search

I have discovered the Grand Unified Theory. Einstein and others missed it because of a major error that crept into physics 400 years ago. This error is the heliocentric universe proposed by Copernicus. My Grand Unified Theory is based on the true nature of our universe, the geocentric model.

Radhakrishnan Nair

2009-01-01

68

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

69

How Was the Grand Canyon Formed?  

NSDL National Science Digital Library

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

70

Grand challenges in biomedical computing.  

PubMed

Advances in computing technology (both algorithms and hardware) over the next several years promise to make increasingly sophisticated computer modeling of biomedical phenomena a routine part of biomedical research. Improvements in both the absolute speed of processors and in their programming and graphics interfaces will allow nonexpert users to bring computing power equivalent to the supercomputers of a few years ago to bear on routine research problems and to display complex data in understandable ways (visualization). Although biomedical applications have traditionally not driven the leading edge of computing and supercomputing, such applications are increasingly being ported to advanced parallel and vector processors. This paper summarizes the current state of biomedical computing, citing examples of the best practice in research today. A number of projects enabled by advanced computing from various subdisciplines are described. Trends in technology for both inexpensive (workstation) and high-end computing (vector supercomputers and parallel processors) are cited; the implications of these for biomedical computing are discussed. "Grand challenges" in biomedical computing, i.e., computational problems of major scientific importance that are beyond our current capabilities but that might be achieved in a 5-year time frame, are outlined. PMID:1424683

Board, J A

1992-01-01

71

A new imminent grand minimum?  

NASA Astrophysics Data System (ADS)

The planetary hypothesis of solar cycle is an old idea by which the planetary gravity acting on the Sun might have a non-negligible effect on the solar magnetic cycle. The advance of this hypothesis is based on phenomenological correlations between dynamical parameters of the Sun's movement around the barycenter of the Solar System and sunspots time series. In addition, several authors have proposed, using different methodologies that the first Grand Minima (GM) event of the new millennium is coming or has already begun. We present new fully three dimensional N-body simulations of the solar inertial motion (SIM) around the barycentre of the solar system in order to perform a phenomenological comparison between relevant SIM dynamical parameters and the occurrences of the last GM events (i.e., Maunder and Dalton). Our fundamental result is that the Sun acceleration decomposed in a co-orbital reference system shows a very particular behaviour that is common to Maunder minimum, Dalton minimum and the maximum of cycle 22 (around 1990), before the present prolonged minimum. We discuss our results in terms of a dynamical characterization of GM with relation to Sun dynamics and possible implications for a new GM event.

Cionco, Rodolfo G.; Compagnucci, Rosa H.

2012-07-01

72

Zhou Enlai and Chinese Grand Strategy.  

National Technical Information Service (NTIS)

0000e are comparatively few books about Chinese foreign policy in Chinese or English. Aside from the writings of Mao Zedong, there are virtually no specific books in Chinese about Chinese 'grand strategy.' Contemporary Chinese writers actually write very ...

R. J. Latham

1990-01-01

73

Grand Challenges of Command and Control Policy.  

National Technical Information Service (NTIS)

We are interested in defining and investigating the grand challenges facing the command and control (C2) community in a network centric, transformational environment. The purpose of these investigations is to provide a rigorous basis for assessing the sta...

J. Lenahan P. Charles

2006-01-01

74

China's Grand Strategy: From Confucius to Contemporary.  

National Technical Information Service (NTIS)

Analysts and policy makers articulate growing concerns on whether China's rapid rise will remain peaceful or become confrontational. To understand Chinese grand strategy, this paper draws on its long history and classical thinkers to offer four main argum...

S. Saha

2010-01-01

75

Nomimoscolex pertierrae n. sp. (Eucestoda: Proteocephalidea), a parasite of Pseudoplatystoma corruscans (Siluriformes: Pimelodidae) in Brazil and redescription of N. sudobim Woodland, 1935, a parasite of P. fasciatum.  

PubMed

The cestode Nomimoscolex sudobim Woodland, 1935 (Proteocephalidea) is redescribed on the basis of its type-specimens and recently collected material found in the intestine of the 'sudobim' Pseudoplatystoma fasciatum (Siluriformes: Pimelodidae) (type-host), from the Amazon River (near the type-locality). Nomimoscolex pertierrae n. sp. is described from the 'surubi' Pseudoplatystoma corruscans from the Paraná River around Porto Rico. Among fifteen known Nomimoscolex species, only N. sudobim possess a cortical uterus in combination with osmoregulatory canals some distance internal to the proglottis margins, as in N. pertierrae n. sp. N. pertierrae differs from N. sudobim, which exhibits the most similarity with the former species, in the morphology of the scolex, the size and unusual shape of microtriches (slender digitiform) on the internal and marginal regions of the suckers, and in the lower mean number of testes [(114 in N. pertierrae, ranging between 216 (recently collected material) and 240 (type-material) in N. sudobim)]. The material described as N. sudobim by Pavanelli & Rego (1992) from the intestine of P. corruscans is considered to be N. pertierrae. The utility of microtriches as characters for distinguishing between species is demonstrated in the clear differences in the shape of those of N. pertierrae and N. sudobim. The morphology of microtriches warrants more attention in future studies on the taxonomy of proteocephalidean cestodes. PMID:16786284

de Chambrier, Alain; Takemoto, Ricardo M; Pavanelli, Gilberto C

2006-05-05

76

The grand tour in k-dimensions  

Microsoft Academic Search

Abstract: The grand tour introduced by Asimov (1985) is based on the idea that one method of searching for structure in ddimensionaldata is to "look at it from all possible angles," more mathematically, to project the data sequentially in to allpossible two-planes. The collection of two-planes in a d-dimensional space is called a Grassmannian manifold. A keyfeature of the grand

E. Wegman

1991-01-01

77

Lithospheric structure of the Rio Grande rift  

Microsoft Academic Search

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

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

2005-01-01

78

Different Views of the Grand Canyon  

NASA Astrophysics Data System (ADS)

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

Elders, Wilfred A.

79

External view of the DARPA Grand Challenge  

NASA Astrophysics Data System (ADS)

The 2005 DARPA Grand Challenge (DCG) was a 'Huge Leap Forward for Robotics R&D' according to the DARPA Grand Challenge tracking website. Similar to the transatlantic flight competition that spurred commercial flights all over the world, the Grand Challenge was a step forward in the area of navigation for unmanned ground vehicles. However, questions like 'What are the important technologies brought forth by the Grand Challenge?' and 'How can these technologies assist our soldiers in the field?' need to be addressed. This paper will look at the 2005 DARPA Grand Challenge from the perspective of individuals involved in some of the Army's unmanned ground vehicle programs. Information will be presented contrasting this year's competition to the one held in 2004. Details of the enabling technologies from many of the competitors will be discussed along with problems they encountered at the National Qualification Event (NQE) and on Race Day. Finally, thoughts will be presented on how these technologies may be harvested in commercial and DOD research and development for current and future systems.

Frederick, Philip A.; Kania, Robert; Teems, Justin; Del Rose, Mike

2006-06-01

80

Status of the KASCADE-Grande experiment  

NASA Astrophysics Data System (ADS)

The status and capabilities of the KASCADE-Grande extensive air shower experiment are presented. The installation is located at Forschungszentrum Karlsruhe and comprises a large collecting area (0.5 km2) electromagnetic array (Grande) operated jointly with the existing KASCADE detectors. KASCADE-Grande will cover the primary energy range 1016 eV < E0 < 1018 eV overlapping with KASCADE around 1016 eV, thus providing continuous information on the primary energy and mass of cosmic rays from 3 . 1014 eV up to 1018 eV. The major goal of the measurements is the unambiguous observation of the ``iron knee'' expected in the cosmic ray spectrum at EkFe ~ 1017 eV.

Kampert, K.-H.; Antoni, T.; Apel, W. D.; Badea, F.; Bekk, K.; Bercuci, A.; Bertaina, M.; Blümer, H.; Bozdog, H.; Brancus, I. M.; Bütner, C.; Chiavassa, A.; Daumiller, K.; Doll, P.; Engler, J.; Feßler, F.; Ghia, P. L.; Gils, H. J.; Glasstetter, R.; Haeusler, R.; Haungs, A.; Heck, D.; Hörandel, J. R.; Iwan, A.; Klages, H. O.; Maier, G.; Mathes, H. J.; Mayer, H. J.; Martello, D.; Milke, J.; Morello, C.; Müller, M.; Navarra, G.; Obenland, R.; Oehlschläger, J.; Ostapchenko, S.; Petcu, M.; Rebel, H.; Roth, M.; Schieler, H.; Scholz, J.; Thouw, T.; Trinchero, G. C.; Ulrich, H.; Ulrich, R.; Weber, J. H.; Weindl, A.; Wentz, J.; Wochele, J.; Zabierowski, J.; Zagromski, S.

2003-07-01

81

The Colorado River in the Grand Canyon.  

ERIC Educational Resources Information Center

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

Speece, Susan

1991-01-01

82

The Cambrian eustatic signal: Not so grand  

SciTech Connect

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

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

1990-05-01

83

Search for a Realistic Orbifold Grand Unification  

SciTech Connect

We review the prototype model of a grand unified theory on the orbifold S{sup 1}/Z{sub 2} and discuss topics related to the choice of boundary conditions; the dynamical rearrangement of gauge symmetry and the equivalence classes of BCs. We explore a family unification scenario by orbifolding.

Kawamura, Yoshiharu [Department of Physics, Shinshu University, Matsumoto 390-8621 (Japan)

2008-05-13

84

Proton Hexality in Local Grand Unification  

Microsoft Academic Search

Proton hexality is a discrete symmetry that avoids the problem of too fast\\u000aproton decay in the supersymmetric extension of the standard model.\\u000aUnfortunately it is inconsistent with conventional grand unification. We show\\u000athat proton hexality can be incorporated in the scheme of \\

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

2010-01-01

85

Comprehensive District Reform: Philadelphia's Grand Experiment.  

ERIC Educational Resources Information Center

This report describes "Philadelphia's Grand Experiment" in comprehensive school district reform, from its conception through its initial months of implementation. In 2001, as part of the remedy for low student performance, the governor ordered the state to take over governance of the Philadelphia School District, with a substantial number of…

Useem, Elizabeth; Balfanz, Robert

2002-01-01

86

Rio Grande rift: problems and perspectives  

SciTech Connect

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

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

1984-01-01

87

Grand Canyon Humpback Chub Population Improving  

USGS Publications Warehouse

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

Andersen, Matthew E.

2007-01-01

88

Low marine terraces of Grand Cayman Island  

Microsoft Academic Search

Twenty levelling profiles across the shore zone of Grand Cayman Island reveal the presence of six low marine terraces above present sea level. The lowest and youngest one at about 2 m elevation is the most widespread and probably represents Sangamon interglacial high sea level. Higher terraces are much eroded and probably much older, but none provides evidence of post-terrace

K. O. Emery

1981-01-01

89

Center Must Hold: Avoiding Grand Strategic Failure.  

National Technical Information Service (NTIS)

This paper will examine the collapse of the Russian Empire and Soviet Union in turn, positing that those failures were due to the lack of a coherent grand strategy in each. The paper will then outline the current strategic environment for the United State...

I. J. Robinette

2012-01-01

90

A Grand Unified Theory of Interdisciplinarity  

ERIC Educational Resources Information Center

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

Davis, Lennard J.

2007-01-01

91

Five Grand Challenges for Library Research.  

ERIC Educational Resources Information Center

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

Buckland, Michael K.

2003-01-01

92

Different Views of the Grand Canyon  

Microsoft Academic Search

Each year the spectacular scenery of the Grand Canyon of Arizona awes its more than 4,000,000 visitors. Just as its enormous scale dwarfs our human sense of space, its geology also dwarfs our human sense of time. Perhaps here, more than anywhere else on the planet, we can experience a sense of ``Deep Time.'' The colorful rocks exposed in the

Wilfred A. Elders

2003-01-01

93

Creationism in the Grand Canyon, Texas Textbooks  

NASA Astrophysics Data System (ADS)

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

Folger, Peter

2004-01-01

94

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

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

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

95

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

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

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

96

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

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

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

97

Historical Foundations of U.S. Grand Strategy.  

National Technical Information Service (NTIS)

In order to effectively write grand strategy for the twenty first century it is important to understand how 'American exceptionalism' among other influences affects U.S. grand strategy. The ideological constant of 'American exceptionalism' has historicall...

C. M. Morinelli

2009-01-01

98

27 CFR 9.129 - Arroyo Grande Valley.  

Code of Federal Regulations, 2013 CFR

...BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.129 Arroyo Grande...Arroyo Grande Road crosses the spillway of Lopez Dam in section 32, T. 31 S., R. 14 E....

2013-04-01

99

Cause-specific Mortality of Grand Multiparous Women in Finland  

Microsoft Academic Search

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

Marianne Hinkula; Antti Kauppila; Simo Nayha; Eero Pukkala

2005-01-01

100

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

101

36 CFR 7.4 - Grand Canyon National Park.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Grand Canyon National Park. 7.4 Section...NATIONAL PARK SYSTEM § 7.4 Grand Canyon National Park. (a) Commercial...passengers by motor vehicles to Grand Canyon National Park contained...

2010-07-01

102

36 CFR 7.4 - Grand Canyon National Park.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Grand Canyon National Park. 7.4 Section...NATIONAL PARK SYSTEM § 7.4 Grand Canyon National Park. (a) Commercial...passengers by motor vehicles to Grand Canyon National Park contained...

2009-07-01

103

La réfrigération des grandes machines supraconductrices  

NASA Astrophysics Data System (ADS)

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

Gistau, Guy

1991-02-01

104

The Grand Challenge: Fix the Hip Challenge  

NSDL National Science Digital Library

This lesson introduces the Bone Module Grand Challenge question. Students are asked to write their initial responses to the question alone. They will then brainstorm ideas with one other student. Finally, the ideas are shared with the class and recorded. Students then watch two videos about osteoporosis. Grand Challenge Question: When you get home from school, your mother grabs you, and you rush to the hospital. Your grandmother fell and was rushed to the emergency room. The doctor tells your family your grandmother has a fractured hip, and he is referring her to an orthopedic specialist. The orthopedic doctor decides to perform a DEXA scan. The result showed her BMD was -3.3. What would be a probable diagnosis to her condition? What are some possible causes of her condition? Should her daughter and granddaughter be worried about this condition, and if so, what are possible prevented measures they could take to prevent this from happening to them?

Vu Bioengineering Ret Program

105

Shower Reconstruction Performance of KASCADE-Grande  

NASA Astrophysics Data System (ADS)

KASCADE-Grande extends the former KASCADE experiment by a large area scintillator array (0.5 km2 ) for the detection of the charged component of extensive air showers. Its goal is to reconstruct the primary energy and composition of cosmic rays up to energies of 1018 eV thereby allowing a detailed investigation of the expected ironknee. Knowing the shower core and size as well as its direction from the Grande array the KASCADE detectors allow the determination of the muon number above different energy thresholds. We present the accuracy of the shower reconstruction methods based on CORSIKA simulations. Implications to the discrimination power of the obtained parameters with respect to the nature of the primary particles will be considered.

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

2003-07-01

106

Grand challenges in clinical decision support  

Microsoft Academic Search

There is a pressing need for high-quality, effective means of designing, developing, presenting, implementing, evaluating, and main- taining all types of clinical decision support capabilities for clinicians, patients and consumers. Using an iterative, consensus-building process we identified a rank-ordered list of the top 10 grand challenges in clinical decision support. This list was created to educate and inspire researchers, developers,

Dean F. Sittig; Adam Wright; Jerome A. Osheroff; Blackford Middleton; Jonathan M. Teich; Joan S. Ash; Emily Campbell; David W. Bates

2008-01-01

107

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.

108

Rio Grande pipeline introduces LPG to Mexico  

SciTech Connect

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

NONE

1997-06-01

109

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

110

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

NASA Astrophysics Data System (ADS)

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

Munski, Laura

111

Grand Cycles of the Milankovitch Band  

NASA Astrophysics Data System (ADS)

Celestial mechanical theory predicts not just the familiar set of Milankovitch cycles of about 21, 41, and 100 ky, the climatic significance of which was established 25 years ago by Hays, Imbrie, and Shackleton (1); but also longer period cycles "grand cycles" with present day periods of about 400 ky, and 1.25, 2.35 and 4.6 my. The effects of these longer period cycles are only potentially discernable, convincingly, in very long climate records spanning several to tens of millions of years. However, long term chaotic drift in the fundamental frequencies of the planets makes the actual value of all - except the 400 ky - grand cycles, unpredictable for records older than about 50 Ma (2). Added uncertainty exists because of the poorly understood evolution of the Earth-Moon system, which makes calibration by the high frequency precession and obliquity cycles unreliable for distant times. The 400 ky cycle provides a reliable tuning target for long ancient records because it is caused by the gravitational interaction of Jupiter and Venus, the former of which has an extremely stable orbit. One of the longest paleoclimate records available is that resulting from the Newark Basin Coring Project (NBCP), with 6700 m of Triassic-Jurassic lacustrine strata, spanning about 30 my years. Based on evolutive thickness-frequency spectrograms, the major higher-frequency precession-related cycles are all present, with an especially strong 400 ky signal. Tuning to the 400 ky cycle reveals significant low-frequency cycles of 1.75 and 3.5 my (3). The former is homologous to the present day 2.35 my grand cycle, which modulates climatic precession, and is caused by the gravitational interaction of Earth (g3) and Mars (g4); the observed difference is well within the predicted chaotic region (4) of the fundamental frequencies (g4-g3). The latter 3.5 million year cycle is a homologue of the present day 4.6 my grand cycle. This cycle is a consequence of the secular resonance, theta (2(g4-g3) - (s4-s3)) (2,4). Identification of these long period cycles is essential, because what may appear to be unique climatic transitions could actually be nodes of the grand cycles superimposed on a longer climatic trend. Also, because the NBCP record has virtually no expression of high frequency obliquity cycles (as expected by its tropical position), the presence of the 3.5 my cycle suggests some large-scale climate system telecommunication between the Triassic continental tropics and regions sensitive to obliquity, perhaps through weathering-modulated atmospheric CO2. In addition, the presence of the 1.75 and 3.5 my grand cycles suggests that the mode of the secular resonance in the Triassic was not different to that of today, as is theoretically possible (2). Finally, the long period cycles should be globally synchronous, and hence they offer a new low-frequency means of cyclostratigraphic correlation. References: (1) Hays, J. D., Imbrie, J. and Shackleton, N. J. 1976. Science 194:1121. (2) Laskar, J. 1999. Phil. Trans. Roy. Soc. Lond. A, 357:1735. (3) Olsen, P. E. and Kent, D. V. 1999. Phil. Trans. Roy. Soc. Lond. A, 357:1761. (4) Laskar, J. 1990. Icarus 88:266. >http://www.ldeo.columbia.edu/~polsen/nbcp/nbcp.html

Olsen, P. E.

2001-12-01

112

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

113

The Grand Canyon: Its Youngest Rocks  

NSDL National Science Digital Library

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

2011-03-14

114

The Grand Canyon: How It Formed  

NSDL National Science Digital Library

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

2011-02-23

115

The Grand Canyon: How It Formed  

NSDL National Science Digital Library

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

116

Supernovae in flocculent and grand design spirals  

SciTech Connect

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

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

1986-12-01

117

Grand unified models in heterotic asymmetric orbifolds  

NASA Astrophysics Data System (ADS)

We consider string realization of E6 SUSY GUT with adjoint Higgs fields in heterotic string theory. We require minimum phenomenological requirements for E6 SUSY GUTs (four-dimensional N = 1 supersymmetry, E6 grand unified group, three generations and adjoint representation Higgs fields) for our string model building. In order to realize an adjoint Higgs field, we use diagonal embedding method and utilize lattice engineering technique for the model building. In the framework of Z12 heterotic asymmetric orbifold construction, we obtain two more three-family E6 models with an adjoint Higgs field.

Kuwakino, Shogo

2012-07-01

118

Cultural Resource Investigation of the Grand Forks/East Grand Forks Urban Study and the East Grand Forks Flood Control Project.  

National Technical Information Service (NTIS)

The U.S. Army Corps of Engineers has proposed flood control and flood plain management alternatives for the Grand Forks, North Dakota/East Grand Forks, Minnesota area. The purpose of this investigation is to compile all known cultural resource data within...

G. J. Hudak

1981-01-01

119

La gouvernance des grands projets d’infrastructure publique - Analyse des grands projets réalisés au Québec  

Microsoft Academic Search

Le Secrétariat du Conseil du trésor (SCT) du Québec a confié au CIRANO le mandat de développer un cadre de gouvernance pour la planification et la gestion de grands projets d’infrastructure publique. Le chercheur principal pour ce projet est Roger Miller de l’École Polytechnique de Montréal, qui a cumulé une expérience étendue dans ce domaine, notamment dans le cadre de

Féthi Chebil; Joanne Castonguay; Roger Miller

2006-01-01

120

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

ERIC Educational Resources Information Center

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

Rohstock, Anne; Schreiber, Catherina

2013-01-01

121

A Grand ?(96)×SU(5) Flavour Model  

NASA Astrophysics Data System (ADS)

Recent results from the Daya Bay and RENO reactor experiments have measured the smallest lepton mixing angle and found it to have a value of ?13?9°. This result presents a new challenge for the existing paradigms of discrete flavour symmetries which attempt to describe all quark and lepton masses and mixing angles. Here we propose a Supersymmetric Grand Unified Theory of Flavour based on ?(96)×SU(5), together with a U(1)×Z3 symmetry, including a full discussion of ?(96) in a convenient basis. The Grand ?(96)×SU(5) Flavour Model relates the quark mixing angles and masses in the form of the Gatto-Sartori-Tonin relation and realises the Georgi-Jarlskog mass relations between the charged leptons and down-type quarks. We predict a Bi-trimaximal (not Tri-bimaximal) form of neutrino mixing matrix, which, after including charged lepton corrections with zero phase, leads to the following GUT scale predictions for the atmospheric, solar, and reactor mixing angles: ?23?36.9°, ?12?32.7° and ?13?9.6°, in good agreement with recent global fits, and a zero Dirac CP phase ??0.

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

2013-02-01

122

Albert le Grand: De ce qui vient avant la logique  

Microsoft Academic Search

Le premier tractatus du commentaire d'Albert le Grand à l'Isagoge de Porphyre consiste en une manière de proème ou d'introduction à l'ensemble de la logique. Comme la plupart des textes d'Albert le Grand, ce traité est d'une très grande richesse, qu'atténuent toutefois son manque d'ordre et son obscurité d'expression. Étant donné que les aspects fondamentaux de la logique y sont

Bruno Tremblay

2004-01-01

123

The problem of the Grand Unification Theory  

NASA Astrophysics Data System (ADS)

The evolution and fundamental questions of physical theories unifying the gravitational, electromagnetic, and quantum-mechanical interactions are explored, taking Pauli's aphorism as a motto: 'Let no man join what God has cast asunder.' The contributions of Faraday and Riemann, Lorentz, Einstein, and others are discussed, and the criterion of Pauli is applied to Grand Unification Theories (GUT) in general and to those seeking to link gravitation and electromagnetism in particular. Formal mathematical symmetry principles must be shown to have real physical relevance by predicting measurable phenomena not explainable without a GUT; these phenomena must be macroscopic because gravitational effects are to weak to be measured on the microscopic level. It is shown that empirical and theoretical studies of 'gravomagnetism', 'gravoelectricity', or possible links between gravoelectrity and the cosmic baryon assymmetry eventually lead back to basic questions which appear philosophical or purely mathematical but actually challenge physics to seek verifiable answers.

Treder, H.-J.

124

Gauged flavor, supersymmetry and grand unification  

NASA Astrophysics Data System (ADS)

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

Mohapatra, Rabindra N.

2012-07-01

125

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.

126

Grand-Unified-Theory Baryogenesis after Preheating  

SciTech Connect

At the end of inflation the Universe is frozen in a near zero-entropy state with energy density in a coherent scalar field and must be {open_quote}{open_quote}defrosted{close_quote}{close_quote} to produce the observed entropy and baryon number. We propose that the baryon asymmetry is generated by the decay of supermassive grand-unified-theory (GUT) bosons produced nonthermally in a preheating phase after inflation. We show that baryogenesis is possible for an inflaton mass of order 10{sup 13} GeV and a GUT Higgs boson mass of order 10{sup 14} GeV, thus solving many drawbacks facing GUT baryogenesis in the old reheating scenario. {copyright} {ital 1996 The American Physical Society.}

Kolb, E.W.; Linde, A.; Riotto, A. [NASA/Fermilab Astrophysics Center, Fermilab National Accelerator Laboratory, Batavia, Illinois 60510-0500 (United States)]|[Department of Astronomy and Astrophysics, Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637-1433 (United States)]|[Department of Physics, Stanford University, Stanford, Californiaw 94305-4060 (United States)

1996-11-01

127

Natural inflation at the grand unification scale  

SciTech Connect

Natural inflation driven by pseudo-Nambu-Goldstone bosons (PNGB) has a problem that the nearly scale invariant spectrum of density perturbations is attained only when the symmetry breaking scale is of the order of Planck scale. We show here that if one couples the PNGB to a thermal bath as in warm inflation models, the amplitude and spectral index which agrees with the Wilkinson Microwave Anisotropy Probe (WMAP) data is obtained with the symmetry breaking in the grand unified theory (GUT) scale. We give a GUT model of PNGB arising out of spontaneously broken lepton number at the GUT scale which gives rise to heavy Majorana masses for the right-handed neutrinos which is needed in seesaw models. This model also generates a lepton asymmetry because of the derivative coupling of the PNGB to the lepton current. A characteristic feature of this model is the prediction of large non-Gaussianity which may be observed in the forthcoming PLANCK experiment.

Mohanty, Subhendra; Nautiyal, Akhilesh [Theory Division, Physical Research Laboratory, Navrangpura, Ahmedabad 380 009 (India)

2008-12-15

128

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

129

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

SciTech Connect

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

Bao Shu-qing; Xue Xiao-zhou

1989-07-01

130

Rio Grande Rift GPS Measurements 2006-2009  

Microsoft Academic Search

We use three years of measurements from 25 continuous GPS stations across the Rio Grande Rift in New Mexico and Colorado to estimate surface velocities, time series, baselines, and strain rates. The stations are part of the EarthScope Rio Grande Rift experiment, a collaboration between researchers at the University of Colorado at Boulder, the University of New Mexico, and Utah

H. Berglund; A. F. Sheehan; R. Nerem; J. Choe; A. R. Lowry; M. Roy; F. Blume; M. Murray

2009-01-01

131

Grove Street Grimm: Grand Theft Auto and Digital Folklore  

Microsoft Academic Search

This article investigates the Grand Theft Auto videogame series in order to demonstrate the potential of a folkloristic, ethnographic approach for the analysis of digital games. I discuss Grand Theft Auto: San Andreas as a story collection, a frame for performance, a virtual museum of vernacular culture, and a widely circulated pop culture artifact whose double-voiced aesthetic has given rise

Kiri Miller

2008-01-01

132

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

133

Grand minima of solar activity during the last millennia  

NASA Astrophysics Data System (ADS)

In this review we discuss the occurrence and statistical properties of Grand minima based on the available data covering the last millennia. In particular, we consider the historical record of sunspot numbers covering the last 400 years as well as records of cosmogenic isotopes in natural terrestrial archives, used to reconstruct solar activity for up to the last 11.5 millennia, i.e. throughout the Holocene. Using a reconstruction of solar activity from cosmogenic isotope data, we analyze statistics of the occurrence of Grand minima. We find that: the Sun spends about most of the time at moderate activity, 1/6 in a Grand minimum and some time also in a Grand maximum state; Occurrence of Grand minima is not a result of long-term cyclic variations but is defined by stochastic/chaotic processes; There is a tendency for Grand minima to cluster with the recurrence rate of roughly 2000-3000 years, with a weak ~210-yr periodicity existing within the clusters. Grand minima occur of two different types: shorter than 100 years (Maunder-type) and long ~150 years (Spörer-type). It is also discussed that solar cycles (most possibly not sunspots cycle) could exist during the Grand minima, perhaps with stretched length and asymmetric sunspot latitudinal distribution. These results set new observational constraints on long-term solar and stellar dynamo models.

Usoskin, Ilya G.; Solanki, Sami K.; Kovaltsov, Gennady A.

2012-07-01

134

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

135

Measurement and reproduction accuracy of computer-controlled grand pianos  

Microsoft Academic Search

The recording and reproducing capabilities of a Yamaha Disklavier grand piano and a Bösendorfer SE290 computer-controlled grand piano were tested, with the goal of examining their reliability for performance research. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the acoustic signal. Five selected keys were played by

Werner Goebl; Roberto Bresin

2003-01-01

136

Videoconferenced Grand Rounds: Needs Assessment for Community Specialists  

ERIC Educational Resources Information Center

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

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

2003-01-01

137

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

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

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

138

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

139

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

Federal Register 2010, 2011, 2012, 2013

...Instrument Approach Procedures at Grand Marais/Cook County Airport. The FAA is taking this...instrument approach procedures at Grand Marais/Cook County Airport, Grand Marais, MN. Controlled...amend controlled airspace at Grand Marais/Cook County Airport, Grand Marais, MN....

2011-05-18

140

Traveltime of the Rio Grande in the Middle Rio Grande Basin, New Mexico, Water Years 2003-05.  

National Technical Information Service (NTIS)

The purpose of this report is to describe traveltimes of the Rio Grande in the Middle Rio Grande Basin during selected times of the year during water years 200305. A flow-pulse analysis was performed by using streamflow data from USGS streamflow-gaging st...

J. B. Langman

2009-01-01

141

75 FR 7152 - CSX Transportation, Inc.-Trackage Rights Exemption-Grand Trunk Western Railroad Company  

Federal Register 2010, 2011, 2012, 2013

...Trackage Rights Exemption--Grand Trunk Western Railroad Company Pursuant to a written trackage rights agreement, Grand Trunk Western Railroad Company (GTW) has agreed...1\\ GTW is a subsidiary of Grand Trunk Corporation, which in turn is a...

2010-02-17

142

76 FR 20654 - Grand River Dam Authority; Notice of Application Accepted for Filing and Soliciting Comments...  

Federal Register 2010, 2011, 2012, 2013

...Project No. 1494-390] Grand River Dam Authority; Notice of Application Accepted...29, 2010. d. Applicant: Grand River Dam Authority. e. Name of Project: Pensacola...easement will be located on Grand River Dam Authority property in Section 2,...

2011-04-13

143

A probe of nature's grand design  

SciTech Connect

CP violation has so far been observed in one system only, namely in the decays of neutral kaons, and it can still be described by a single real quantity corresponding to a superweak scenario. In these lectures I describe why limitations on CP invariance are a particularly fundamental phenomenon and what experimental information is available. The KM ansatz constitutes the minimal implementation of CP violation: without requiring unknown degrees of freedom it can reproduce the known CP phenomenology. It unequivocally predicts large or even huge CP asymmetries of various kinds in the decays of beauty hadrons. New theoretical technologies will enable us in the foreseeable future to express at least some of these predictions in a quantitatively reliable fashion. There is tremendous potential for discovering New Physics in beauty transitions. Continuing efforts in strange decays and further dedicated searches for electric dipole moments and for CP asymmetries in charm decays are likewise essential for discovering crucial elements that still are missing in the puzzle that is Nature's Grand Design.

Bigi, I. I. [Department of Physics, University of Notre Dame du Lac, Notre Dame, Indiana 46556 (United States)

1998-02-05

144

Integrated telemedicine workstation for intercontinental grand rounds  

NASA Astrophysics Data System (ADS)

The Telemedicine Spacebridge to Moscow was a series of intercontinental sessions sponsored jointly by NASA and the Moscow Academy of Medicine. To improve the quality of medical images presented, the MDIS Project developed a workstation for acquisition, storage, and interactive display of radiology and pathology images. The workstation was based on a Macintosh IIfx platform with a laser digitizer for radiographs and video capture capability for microscope images. Images were transmitted via the Russian Lyoutch Satellite which had only a single video channel available and no high speed data channels. Two workstations were configured -- one for use at the Uniformed Services University of Health Sciences in Bethesda, MD. and the other for use at the Hospital of the Interior in Moscow, Russia. The two workstations were used may times during 16 sessions. As clinicians used the systems, we modified the original configuration to improve interactive use. This project demonstrated that numerous acquisition and output devices could be brought together in a single interactive workstation. The video images were satisfactory for remote consultation in a grand rounds format.

Willis, Charles E.; Leckie, Robert G.; Brink, Linda; Goeringer, Fred

1995-04-01

145

A probe of nature's grand design  

NASA Astrophysics Data System (ADS)

CP violation has so far been observed in one system only, namely in the decays of neutral kaons, and it can still be described by a single real quantity corresponding to a superweak scenario. In these lectures I describe why limitations on CP invariance are a particularly fundamental phenomenon and what experimental information is available. The KM ansatz constitutes the minimal implementation of CP violation: without requiring unknown degrees of freedom it can reproduce the known CP phenomenology. It unequivocally predicts large or even huge CP asymmetries of various kinds in the decays of beauty hadrons. New theoretical technologies will enable us in the foreseeable future to express at least some of these predictions in a quantitatively reliable fashion. There is tremendous potential for discovering New Physics in beauty transitions. Continuing efforts in strange decays and further dedicated searches for electric dipole moments and for CP asymmetries in charm decays are likewise essential for discovering crucial elements that still are missing in the puzzle that is Nature's Grand Design.

Bigi, I. I.

1998-02-01

146

Fits to SO(10) grand unified models  

NASA Astrophysics Data System (ADS)

We perform numerical fits of Grand Unified Models based on SO(10), using various combinations of 10-, 120- and 126-dimensional Higgs representations. Both the supersymmetric and non-supersymmetric versions are fitted, as well as both possible neutrino mass orderings. In contrast to most previous works, we perform the fits at the weak scale, i.e. we use RG evolution from the GUT scale, at which the GUT-relations between the various Yukawa coupling matrices hold, down to the weak scale. In addition, the right-handed neutrinos of the seesaw mechanism are integrated out one by one in the RG running. Other new features are the inclusion of recent results on the reactor neutrino mixing angle and the Higgs mass (in the non-SUSY case). As expected from vacuum stability considerations, the low Higgs mass and the large top-quark Yukawa coupling cause some pressure on the fits. A lower top-quark mass, as sometimes argued to be the result of a more consistent extraction from experimental results, can relieve this pressure and improve the fits. We give predictions for neutrino masses, including the effective one for neutrinoless double beta decay, as well as the atmospheric neutrino mixing angle and the leptonic CP phase for neutrino oscillations.

Dueck, Alexander; Rodejohann, Werner

2013-09-01

147

Salt loads and the sustainability of the Rio Grande  

NASA Astrophysics Data System (ADS)

A changing climate and anthropogenic inputs have lead to increased salt loads in the Rio Grande and its near-surface alluvial aquifers. These chemical changes in combination with increasing municipal and agricultural demand for water threaten the sustainability of the Rio Grande system. In this study, we evaluated current and historical salt loads in the upper and middle Rio Grande related to climate, municipal, and agricultural inputs. In addition to the well-understood effects of evaporation from increasing aridity downstream and the annual flux of water from upstream dams for irrigation, the water chemistry of the Rio Grande is influenced by decadal-scale fluctuations in climate. Increased snowpack in the headwater region leads to increases in sulfate (SO4) concentration relative to chloride (Cl) and bicarbonate (HCO3) downstream. Sulfur (S) isotopes of SO4 suggest that in addition to the dissolution of evaporite minerals, the weathering of sulfide minerals (i.e., pyrite) is an important source of sulfate in the Rio Grande, accounting for 50% or more of the sulfur budget above Albuquerque, NM. More than 80 years of historical data from the Rio Grande at El Paso, suggests that Cl/SO4 ratios at this location increase during periods of drought. This corresponds to times of limited snowpack in the headwater region. Municipal waste water inputs, which represent a considerable fraction of the total surface water flow in the Rio Grande above El Paso, Texas, add additional salts and change water chemistry by increasing Cl relative to SO4. Finally, we estimate that agricultural inputs from fertilizers increases the sulfate flux by 14 to 22% (slightly decreasing the Cl/SO4 ratio) in the Rio Grande near El Paso, Texas. Understanding how salt loads and chemistry in the Rio Grande are impacted by changes in climate, urbanization, and land use is necessary to evaluate the long-term sustainability of this water resource.

Borrok, D. M.; Szynkiewicz, A.

2011-12-01

148

Thermomechanical models of the Rio Grande rift  

SciTech Connect

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

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

1980-01-01

149

Ground Motion Predictions for the Grand Saline Experiment.  

National Technical Information Service (NTIS)

Finite difference calculations are used to predict the ground motion and RVP spectra from a tamped 200 pound charge of Pelletol explosive detonated in the Grand Saline Salt Dome. Computational constitutive models and material properties for dome salt are ...

N. Rimer J. T. Cherry

1982-01-01

150

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

SciTech Connect

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

McGowan, Vance R.; Powell, Russ M.

1999-05-01

151

33. Grand Canal at Old Crosscut, Site Plan for Conduit ...  

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

33. Grand Canal at Old Crosscut, Site Plan for Conduit and Supervisory Control Equipment, October 1973. Source: Salt River Project. - Old Crosscut Canal, North Side of Salt River, Phoenix, Maricopa County, AZ

152

Grand Minima and North-South Asymmetry of Solar Activity  

NASA Astrophysics Data System (ADS)

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

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

2013-11-01

153

Stem volume losses in grand firs topkilled by western spruce ...  

Treesearch

Damage to the stands resulted from three outbreaks of western spruce budworm (Choristoneura occidentalis Freeman) in ... Stem volume losses in grand firs topkilled by western spruce budworm in Idaho. Res. ... Last Modified: July 21, 2013.

154

47. PLANS FOR EXISTING THREESPAN PEDESTRIAN BRIDGE OVER GRAND CANAL ...  

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

47. PLANS FOR EXISTING THREE-SPAN PEDESTRIAN BRIDGE OVER GRAND CANAL AT 25TH AVENUE Plan Sheet D-5117 (delineated by R. H. Bacon, April 1939) - Venice Canals, Community of Venice, Los Angeles, Los Angeles County, CA

155

36 CFR 7.4 - Grand Canyon National Park.  

Code of Federal Regulations, 2013 CFR

...National Park Service, along the Colorado River within Grand Canyon National Park...permitted on beach areas along the Colorado River. (8) Swimming and bathing...also authorizes camping along the Colorado River by persons in the river...

2013-07-01

156

Grand challenges in interfacing engineering with life sciences and medicine.  

PubMed

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

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

2013-02-01

157

Participatory Design in Grand Rapids: Second Generation Planning.  

ERIC Educational Resources Information Center

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

Eriksen, Aase

1979-01-01

158

The KASCADE-Grande Experiment and the LOPES Project  

NASA Astrophysics Data System (ADS)

KASCADE-Grande is the extension of the multi-detector setup KASCADE to cover a primary cosmic ray energy range from 100 TeV to 1 EeV. The enlarged EAS experiment provides comprehensive observations of cosmic rays in the energy region around the knee. Grande is an array of 700 × 700 m2 equipped with 37 plastic scintillator stations sensitive to measure energy deposits and arrival times of air shower particles. LOPES is a small radio antenna array to operate in conjunction with KASCADE-Grande in order to calibrate the radio emission from cosmic ray air showers. Status and capabilities of the KASCADE-Grande experiment and the LOPES project are presented.

Badea, A. F.; Antoni, T.; Apel, W. D.; Bekk, K.; Bercuci, A.; Bertaina, M.; Blümer, H.; Bozdog, H.; Brancus, I. M.; Brüggemann, M.; Bucholz, P.; Chiavassa, A.; Daumiller, K.; di Pierro, F.; Doll, P.; Engel, R.; Engler, J.; Falcke, H.; Feßler, F.; Ghia, P. L.; Gils, H. J.; Glasstetter, R.; Haungs, A.; Heck, D.; Hörandel, J. R.; Horneffer, A.; Huege, T.; Kampert, K.-H.; Kant, G. W.; Klages, H. O.; Kolotaev, Y.; Maier, G.; Mathes, H. J.; Mayer, H. J.; Milke, J.; Morello, C.; Müller, M.; Navarra, G.; Obenland, R.; Oehlschläger, J.; Ostapchenko, S.; Petcu, M.; Plewnia, S.; Rebel, H.; Risse, A.; Roth, M.; Schieler, H.; Scholz, J.; Stümpert, M.; Thouw, T.; Toma, G.; Trinchiero, G. C.; Ulrich, H.; Valchierotti, S.; van Buren, J.; de Vos, C. M.; Walkowiak, W.; Weindl, A.; Wochele, J.; Zabierowski, J.; Zagromski, S.; Zimmermann, D.

2004-11-01

159

Novel Distribution of Influenza Vaccine in Grand Forks, North Dakota  

Microsoft Academic Search

ISSUE: In 2001, only 56.2% of Grand Forks (GF) County residents >65 years of age received influenza vaccination (Medicare data).PROJECT: Vaccine availability, parking, appointments, waiting, and weather are barriers to influenza vaccination. For 2 years, the Greater Grand Forks Immunization Coalition has collaborated with its partners, including GF Public Health and Altru Health System, to sponsor Drive-Through Flu Shot Clinics.

K. Dunn

2004-01-01

160

Simulations of Precipitation Variability over the Upper Rio Grande Basin  

SciTech Connect

In this research, we study Albuquerque`s water and how it may be affected by changes in the regional climate, as manifested by variations in Rio Grande water levels. To do this, we rely on the use of coupled atmospheric, runoff, and ground water models. Preliminary work on the project has focused on uncoupled simulations of the aquifer beneath Albuquerque and winter precipitation simulations of the upper Rio Grande Basin. The latter is discussed in this paper.

Costigan, Keeley R.; Bossert, James E.; Langley, David L.

1997-12-31

161

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

162

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

Federal Register 2010, 2011, 2012, 2013

...traffic from Grand Junction Regional, Grand Junction, CO to en route airspace, and changes the airport name. This will improve...aircraft departing Grand Junction Regional, Grand Junction, CO, to en route airspace. This action is necessary for the safety and...

2010-02-08

163

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

Federal Register 2010, 2011, 2012, 2013

...Instrument Approach Procedures at Grand Marais/Cook County Airport. The FAA is taking this...additional controlled airspace at Grand Marais/Cook County Airport (76 FR 28687) Docket No...instrument approach procedures at Grand Marais/Cook County Airport, Grand Marais, MN....

2011-07-21

164

Chemical Contamination of the Lower Rio Grande near Laredo, TX  

NASA Astrophysics Data System (ADS)

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

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

2006-12-01

165

patterns of dust transport to the Grand Canyon  

NASA Astrophysics Data System (ADS)

Dust particles in the 2.5 µm to 15 µm diameter range contribute to regional haze that sometimes impairs visibility at the Grand Canyon and other National Parks in the southwestern U.S. The proportion of airborne dust that is attributable to land modification is unknown, but can be expected to increase as a consequence of the region's rapid population growth. This note examines the upwind histories of air masses bringing high coarse-particle concentrations to the Grand Canyon over a five-year monitoring period. Although arid and semi-arid lands extend in all directions, and the fastest airflows generally have a northerly component, high dust concentrations are most common in air arriving from the southwest, where development has been concentrated. This empirical association suggests that the expansion of suburban and agricultural lands is raising dust levels at the Grand Canyon.

de P. Vasconcelos, Luis A.; Kahl, Jonathan D. W.; Liu, Desong; Macias, Edward S.; White, Warren H.

166

Historical records of solar grand minima: a review  

NASA Astrophysics Data System (ADS)

Knowing solar activity during the past centuries is of great interest for many purposes. Historical documents can help us to know about the behaviour of the Sun during the last centuries. The observation of aurorae and naked-eye sunspots provides us with continuous information through the last few centuries that can be used to improve our knowledge of the long-term solar activity including solar Grand Minima. We have more or less detailed information on only one Grand minimum (the Maunder minimum in the second half of 17th century), which serves as an archetype for Grand minima in general. Telescopic sunspot records and measurements of solar diameter during Maunder minimum are available. In this contribution, I review some recent progress on these issues.

Vaquero, José M.

2012-07-01

167

Introduction to Special Section on the Rio Grande Rift  

NASA Astrophysics Data System (ADS)

With the aid of a Penrose Conference in 1974 and an international rift conference held in 1978 in Santa Fe, New Mexico, the Rio Grande rift has become widely recognized as a major Cenozoic continental rift zone. As a result of the 1978 Santa Fe meeting, the American Geophysical Union published a special volume of papers concerned with the Rio Grande rift [Riecker, 1979], and the New Mexico Geological Society recently published another volume focused on this rift [Baldridge et al., 1984]. These volumes are a manifestation of the research activity which lead to the formation of the Rio Grande rift consortium whose purpose is to foster rift-related research and communication. This organization has sponsored several special sessions at geological and geophysical meetings and has generally increased the awareness of this important feature.

Keller, G. R.

1986-05-01

168

Reconstruction of Total Muon Number in Kascade-Grande  

NASA Astrophysics Data System (ADS)

The KASCADE-Grande experiment extends the existing extensive air shower experiment KASCADE by an array of 37 detector stations spread over an area of 0.5 km2. The new Grande array measures the charged component of the showers. To reconstruct the mass composition of the cosmic rays, additional information from the muon component of air showers is required. Using observables from the new Grande array together with the muon detectors of the original KASCADE array provides a possibility to reconstruct also the total muon number of each air shower. The quality of reconstruction based on comparison with simulated data, as well as first results of a reconstructed muon size spectrum are presented.

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

169

Environmental Audit of the Grand Junction Projects Office  

SciTech Connect

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

Not Available

1991-08-01

170

Ground motion predictions for the Grand Saline experiment. Topical report  

SciTech Connect

Finite difference calculations are used to predict the ground motion and RVP spectra from a tamped 200 pound charge of Pelletol explosive detonated in the Grand Saline Salt Dome. Computational constitutive models and material properties for the dome salt are first normalized using ground motion data from a number of nuclear and high explosive events in salt including SALMON, GNOME, and COWBOY. The ground motion predictions for Phase III of the Grand Saline experiment are then made using our best guesses for site material properties.

Rimer, N.; Cherry, J.T.

1982-07-01

171

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

172

Ground motion predictions for the Grand Saline experiment. Topical report  

Microsoft Academic Search

Finite difference calculations are used to predict the ground motion and RVP spectra from a tamped 200 pound charge of Pelletol explosive detonated in the Grand Saline Salt Dome. Computational constitutive models and material properties for the dome salt are first normalized using ground motion data from a number of nuclear and high explosive events in salt including SALMON, GNOME,

N. Rimer; J. T. Cherry

1982-01-01

173

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

Microsoft Academic Search

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

2009-01-01

174

Managing public order at the Australian motorcycle grand prix  

Microsoft Academic Search

Analysis of chronic violence occurring between police and spectators at the Australian Motorcycle Grand Prix led to the formulation of hypotheses about the causes of the violence. These hypotheses proposed a relationship between the violence and (a) police tactics, (b) spectator and police frustration, (c) facilities at and organization of the event, and (d) media sensationalism. Working with the Victoria

Arthur Veno; Elizabeth Veno

1992-01-01

175

The Middle Rio Grande: Its ecology and management  

Treesearch

Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky ... largest cottonwood gallery riparian forest in the southwestern United States. This reach of the Rio Grande extends from Cochiti Dam downstream 260 Km to ... Keywords: riparian ecosystems, human dimensions, hydrology, ecology, history, restoration.

176

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

177

Modeling Fecal Coliform Contamination in the Rio Grande  

Microsoft Academic Search

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 \\

Paul Laware; Hanadi S. Rifai

2006-01-01

178

'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, ...

179

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

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

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

180

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

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

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

181

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

182

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

183

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

ERIC Educational Resources Information Center

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

Learning By Design, 2002

2002-01-01

184

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...

185

National Uranium Resource Evaluation, Grand Canyon Quadrangle, Arizona  

Microsoft Academic Search

The Grand Canyon Quadrangle (2°), northwestern Arizona, was evaluated to identify environments and delineate areas favorable for the occurrence of uranium deposits. This was done using criteria developed for the National Uranium Resource Evaluation. General surface reconnaissance and geochemical sampling were carried out in all geologic environments within the quadrangle. Aerial radiometric and hydrochemical and stream-sediment reconnaissance surveys were performed,

T. A. Baillieul; R. C. Zollinger

1982-01-01

186

Low-energy neutral current phenomenology and grand unified theories  

Microsoft Academic Search

We derive necessary and sufficient conditions to be satisfied by any expanded electroweak gauge model in order to reproduce the standard model low-energy neutral current predictions. These conditions imply several constraints on the neutral gauge boson masses and quantum number assignments for the ordinary fermions. Using these conditions, we prove that the popular grand unified theories based on the gauge

F. del Águila; A. Méndez

1981-01-01

187

Can grand unification monopoles be detected with plastic scintillators?  

Microsoft Academic Search

By drawing upon results from work dealing with the interactions of slow protons with matter, we estimate the light yield of grand unification monopoles from organic scintillators. It is shown that monopoles having velocities >~6×10-4c can be observed.

S. P. Ahlen; G. Tarlé

1983-01-01

188

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

ERIC Educational Resources Information Center

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

Minock, Mary; Shor, Francis

1995-01-01

189

When did the Grand Canyon Begin to Form?  

NSDL National Science Digital Library

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

Lefever, Mary; Hamilton, Carolyn

2008-03-14

190

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

191

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

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

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

192

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

193

A Model for a Grand Theory: Creativity in Art.  

ERIC Educational Resources Information Center

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

McWhinnie, Harold J.

194

2. VIEW OF PUMP DITCH LOOKING WEST. GRAND CANAL FOLLOWS ...  

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

2. VIEW OF PUMP DITCH LOOKING WEST. GRAND CANAL FOLLOWS POWER LINES. INDIAN BEND POND IS WITHIN THE FENCED-IN AREA. - Crosscut Steam Plant, Indian Bend Pond & Pump Ditch, North side Salt River near Mill Avenue & Washington Street, Tempe, Maricopa County, AZ

195

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

196

Rewriting the honour plot: ‘Infierno grande’ by Guillermo Martínez  

Microsoft Academic Search

The short stories in the collection Infierno grande (1989) by Argentine author Guillermo Martínez are bound by a common theme: a deep-seated preoccupation with masculine identity. Born in 1962, Martínez is representative of a generation of men who came of age during the military dictatorship in power from 1976 to 1983, a period ofviolent political repression accompanied by heightened gender

Cynthia Lee Palmer

2006-01-01

197

Proposed Master Plan, Grand Teton National Park, Wyoming.  

National Technical Information Service (NTIS)

A master plan is proposed for the management and use of Grand Teton National Park, which provides for increased public enjoyment of park experiences, with reduced impact on park resources. Some of the adverse effects are reduction in the immediate local e...

1972-01-01

198

Grand Manner Aesthetics in Landscape: From Canvas to Celluloid  

ERIC Educational Resources Information Center

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

Auger, Emily E.

2009-01-01

199

NEST HABITAT USE OF RIO GRANDE WILD TURKEYS  

Microsoft Academic Search

Nest habitat use of Rio Grande Wild Turkeys (Meleagris gallopavo inter- media) was studied along the South Platte River in northeast Colorado in 1986-87. Thirty- three of 35 nests were in riparian habitats. Nests were either in western snowberry (Sym- phoricarpos occidentalis) (67%) or mixed forbs and grasses (33%). Early season nests were more likely to be in snowberry than

JOEL A. SCHMUTZ; CLAIT E. BRAUN; WILLIAM F. ANDEL

1989-01-01

200

146. VIEW DOWNWARDS TOWARDS SOUTH WALL OF GRAND STAIR HALL ...  

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

146. VIEW DOWNWARDS TOWARDS SOUTH WALL OF GRAND STAIR HALL Copy photograph of photogrammetric plate LC-HABS-GS05-B-1977-413R. - Villard Houses, 451-457 Madison Avenue & 24 East Fifty-first Street, New York, New York County, NY

201

147. VIEW UPWARDS TOWARDS SOUTH WALL OF GRAND STAIR HALL ...  

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

147. VIEW UPWARDS TOWARDS SOUTH WALL OF GRAND STAIR HALL Copy photograph of photogrammetric plate LC-HABS-GS05-B-1977-414R. - Villard Houses, 451-457 Madison Avenue & 24 East Fifty-first Street, New York, New York County, NY

202

149. LANDING AND EAST WALL OF GRAND STAIR HALL Copy ...  

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

149. LANDING AND EAST WALL OF GRAND STAIR HALL Copy photograph of photogrammetric plate LC-HABS-GS13-B-1977-416R. - Villard Houses, 451-457 Madison Avenue & 24 East Fifty-first Street, New York, New York County, NY

203

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

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

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

204

Upper Rio Grande at Work Customer Satisfaction Survey 2007  

Microsoft Academic Search

The Institute for Policy and Economic Development (IPED) at the University of Texas at El Paso (UTEP) was contracted by the Upper Rio Grande Workforce Development Board (URGWDB) to conduct a customer satisfaction survey as one component of a larger evaluation project. Customer satisfaction as defined in this survey includes quality of training\\/instructional facilities and equipment as well as overall

Daniel J. Quiñones; Carlos Olmedo; Dennis L. Soden

2007-01-01

205

Upper Rio Grande at Work Employee Satisfaction Survey  

Microsoft Academic Search

The Institute for Policy and Economic Development (IPED) at the University of Texas at El Paso (UTEP) was contracted by the Upper Rio Grande Workforce Development Board (URGWDB) to conduct an employee satisfaction survey as one component of a larger evaluation project. Employee satisfaction as defined in this survey includes quality of facilities and equipment as well as overall work

Daniel J. Quiñones; Carlos Olmedo; Dennis L. Soden

2007-01-01

206

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

207

Grand Manner Aesthetics in Landscape: From Canvas to Celluloid  

ERIC Educational Resources Information Center

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

Auger, Emily E.

2009-01-01

208

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

ERIC Educational Resources Information Center

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

Learning By Design, 2002

2002-01-01

209

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

210

Load and Voltage Control Algorithms for Grand Coulee Powerplant.  

National Technical Information Service (NTIS)

A load and voltage controller for managing the power output of 26 generators and the bus voltages for three high-voltage busses at the Grand Coulee Power Complex is described in detailed flow chart form. The controller is designed for inclusion in a compu...

W. B. Gish

1976-01-01

211

Rotational turbidity flows and the 1929 Grand Banks earthquake  

Microsoft Academic Search

Turbidity currents resulting from underwater earthquakes that cause slumps and bring mud into suspension are common in the ocean. The 1929 Grand Banks earthquake, which generated a large turbidity current, is a particular interest because, as the current advanced, all the submarine telegraph cables situated downslope were broken in sequence. Since the location and breakage times are known, these successive

Doron Nof

1996-01-01

212

Grand Unification as a Bridge Between String Theory and Phenomenology.  

National Technical Information Service (NTIS)

In the first part of the talk, the author explains what empirical evidence points to the need for having an effective grand unification-like symmetry possessing the symmetry SU(4)-color in 4D. If one assumes the premises of a future predictive theory incl...

J. C. Pati

2006-01-01

213

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

214

Mantle Dynamics Beneath the Rio Grande Rift and Colorado Plateau  

Microsoft Academic Search

We have inverted P and S wave teleseismic delay times recorded by the LA RISTRA (Colorado PLateau, Rio Grande Rift, Great Plains Seismic TRansect) array. The RISTRA array consisted of 57 broad band seismic stations most of which were deployed in a line extending 950 km from Lake Powell, Utah to Pecos, Texas. P, PKP, S, and SKS travel time

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

2002-01-01

215

Case Study of the Grand Rapids Public Schools.  

ERIC Educational Resources Information Center

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

Center for Educational Studies, Grand Rapids, MI.

216

Simulations of Precipitation Variability over the Upper Rio Grande Basin  

Microsoft Academic Search

In this research, we study Albuquerque`s water and how it may be affected by changes in the regional climate, as manifested by variations in Rio Grande water levels. To do this, we rely on the use of coupled atmospheric, runoff, and ground water models. Preliminary work on the project has focused on uncoupled simulations of the aquifer beneath Albuquerque and

Keeley R. Costigan; James E. Bossert; David L. Langley

1997-01-01

217

Carbonaceous aerosol particles from common vegetation in the Grand Canyon  

SciTech Connect

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

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

1992-05-01

218

Resident Perceptions Toward the Impacts of the Macao Grand Prix  

Microsoft Academic Search

This article examines host residents’ perceptions toward a major sporting event, the Macao Fomula-3 car racing Grand Prix. It is an empirical study that involved 598 surveys with local Macao residents. An impact scale comprising 20 impact items with 5 factors, namely, social-psychological impacts, society benefits, society costs, social life costs, and physical impacts, was established to assess resident perceptions

Yong Zhou

2010-01-01

219

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

220

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

Federal Register 2010, 2011, 2012, 2013

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

2010-06-16

221

Site visit report: Central Illinois Public Service Company Grand Tower Power Station, Grand Tower, Illinois. Final report  

SciTech Connect

This report details the activities, facilities, and equipment used to sample raw feedstock and waste solids at the Grand Tower Power Station during the period October 19 through October 23, 1981. Explanation of sampling locations, deviations from the test plan, sampling techniques (in accordance with the Fossil Energy Waste General sampling Guideline), and plant design are reviewed.

Not Available

1982-03-01

222

American Grand Strategy: A Critical Analysis of the Historical Strategy to Balance Liberty and Order.  

National Technical Information Service (NTIS)

This thesis is a critical analysis of the complete historical continuum of American grand strategy. The study focuses on how American grand strategy has balanced liberty and order in both domestic political development and foreign policy engagements with ...

D. L. Waters

2012-01-01

223

78 FR 20354 - Notice of Grand Staircase-Escalante National Monument Advisory Committee Meeting  

Federal Register 2010, 2011, 2012, 2013

...Grand Staircase-Escalante National Monument Advisory Committee...Grand Staircase-Escalante National Monument, Bureau of Land Management...review of the draft BLM-Utah National Landscape Conservation System (NLCS) strategic plan;...

2013-04-04

224

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

Federal Register 2010, 2011, 2012, 2013

...click ``Search.'' Click the ``Open Docket Folder'' in the...with the Michigan City Super Boat Grand Prix. The Captain of the Port, Sector...during the Michigan City Super Boat Grand Prix. The Coast Guard proposes...

2010-04-28

225

"U.S. Reclamation Service, Grand River Dam, topographical map of dam ...  

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

"U.S. Reclamation Service, Grand River Dam, topographical map of dam site and construction plant. September 15, 1914." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

226

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

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Grand Mesa Intrastate Air Quality Control Region. 81.173 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.173 Grand...

2013-07-01

227

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

Federal Register 2010, 2011, 2012, 2013

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

2010-10-04

228

75 FR 40862 - Grand Trunk Western Railroad Company-Abandonment Exemption-in Macomb County, MI  

Federal Register 2010, 2011, 2012, 2013

...Surface Transportation Board [Docket No. AB 31 (Sub-No. 42X)] Grand Trunk Western Railroad Company--Abandonment Exemption--in Macomb County, MI Grand Trunk Western Railroad Company (GTW) filed a verified notice of exemption...

2010-07-14

229

"U.S. Reclamation Service, Grand River Dam, details of pier 'G,' ...  

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

"U.S. Reclamation Service, Grand River Dam, details of pier 'G,' Sept. 29, 1914." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

230

78 FR 33968 - Establishment of Class E Airspace; Boca Grande, FL  

Federal Register 2010, 2011, 2012, 2013

...This action establishes Class E Airspace at Boca Grande, FL, to accommodate a new Area Navigation (RNAV) Global Positioning System (GPS) special Standard Instrument Approach Procedure (SIAP) serving Boca Grande Heliport. This action...

2013-06-06

231

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

Federal Register 2010, 2011, 2012, 2013

...14352-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit...13, 2012, the Grand Coulee Project Hydroelectric Authority (GCPHA) filed an application...feasibility of the P.E. Scooteney Wasteway Hydroelectric Project, to be located on the...

2012-02-13

232

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

Federal Register 2010, 2011, 2012, 2013

...14316-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit...the feasibility of the PEC 1973 Drop Hydroelectric Project (PEC 1973 Project or project...Secretary-Manager, Grand Coulee Project Hydroelectric Authority, P.O. Box 219,...

2011-12-06

233

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

Federal Register 2010, 2011, 2012, 2013

...14380-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit...April 4, 2012, Grand Coulee Project Hydroelectric Authority filed an application for...study the feasibility of the Pinto Dam Hydroelectric Project (Pinto Dam Project or...

2012-06-26

234

"U.S. Reclamation Service, Grand River Dam, details of piers 'C' ...  

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

"U.S. Reclamation Service, Grand River Dam, details of piers 'C' & 'E,' Oct. 10, 1914." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

235

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

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

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

236

"U.S. Reclamation Service, Grand River Dam, details of pier 'B,' ...  

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

"U.S. Reclamation Service, Grand River Dam, details of pier 'B,' Oct. 14, 1914." - Grand Valley Diversion Dam, Half a mile north of intersection of I-70 & Colorado State Route 65, Cameo, Mesa County, CO

237

Environmental Characterisitcs of the Grand Fir Mosaic and Adjacent Habitat Types.  

National Technical Information Service (NTIS)

Grand Fir Mosaic habitats differ from adjacent forest habitats in their slow rate of secondary succession to woody vegetation. Remote monitoring stations were used to sample the environment at a Grand Fir Mosaic site and three adjacent habitat types. The ...

D. E. Ferguson J. C. Byrne

2000-01-01

238

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

239

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

Code of Federal Regulations, 2010 CFR

...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ Federal ...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ Section 1...following airspace, designated as the Grand Canyon National Park Special Flight...

2010-01-01

240

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

Code of Federal Regulations, 2010 CFR

...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ Federal ...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ Section 1...following airspace, designated as the Grand Canyon National Park Special Flight...

2009-01-01

241

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

Code of Federal Regulations, 2010 CFR

...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ Appendix to...Flight Rules in the Vicinity of Grand Canyon National Park, AZ Pt. 93...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ...

2009-01-01

242

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

Code of Federal Regulations, 2010 CFR

...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ Appendix to...Flight Rules in the Vicinity of Grand Canyon National Park, AZ Pt. 93...Flight Rules in the Vicinity of the Grand Canyon National Park, AZ...

2010-01-01

243

78 FR 40266 - Wisconsin Central Ltd.-Amended Trackage Rights Exemption-Grand Trunk Western Railroad Company  

Federal Register 2010, 2011, 2012, 2013

...Amended Trackage Rights Exemption--Grand Trunk Western Railroad Company Grand Trunk Western Railroad Company (GTW) has agreed to...Ltd.--Trackage Rights Exemption--Grand Trunk W. R.R., FD 35280 (STB served Aug....

2013-07-03

244

78 FR 40267 - Chicago, Central & Pacific Railroad Company-Amended Trackage Rights Exemption-Grand Trunk Western...  

Federal Register 2010, 2011, 2012, 2013

...Amended Trackage Rights Exemption--Grand Trunk Western Railroad Company Grand Trunk Western Railroad Company (GTW) has agreed to...R.--Trackage Rights Exemption-- Grand Trunk W. R.R., FD 35278 (STB served Aug....

2013-07-03

245

Economic impacts of federal policy responses to drought in the Rio Grande Basin  

Microsoft Academic Search

Significant growth in the Rio Grande Basin's demand for water has stressed the region's scarce water supply. This paper presents an analysis of the impacts of severe and sustained drought and of minimum in-stream flow requirements to support endangered species in the Rio Grande watershed. These impacts are investigated by modeling the physical and institutional constraints within the Rio Grande

Frank A. Ward; Brian H. Hurd; Tarik Rahmani; Noel Gollehon

2006-01-01

246

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

Federal Register 2010, 2011, 2012, 2013

...Boat Show, Niagara River, Grand Island, NY AGENCY: Coast Guard, DHS. ACTION: Notice...safety zone on Niagara River, Grand Island, NY. This proposed rule is intended to restrict...the Buffalo Launch Club in Grand Island, NY. Typically, the event takes place on...

2013-07-03

247

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

Federal Register 2010, 2011, 2012, 2013

...Boat Show, Niagara River, Grand Island, NY AGENCY: Coast Guard, DHS. ACTION: Notice...safety zone on Niagara River, Grand Island, NY. This proposed rule is intended to restrict...on the Niagara River near Grand Island, NY. The Captain of the Port Buffalo has...

2012-03-07

248

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

Federal Register 2010, 2011, 2012, 2013

...Boat Show, Niagara River, Grand Island, NY AGENCY: Coast Guard, DHS. ACTION: Temporary...safety zone on Niagara River, Grand Island, NY. This safety zone is intended to restrict...Boat Show, Niagara River, Grand Island, NY in the Federal Register (77 FR...

2012-08-17

249

76 FR 53051 - Safety Zone; ISAF Nations Cup Grand Final Fireworks Display, Sheboygan, WI  

Federal Register 2010, 2011, 2012, 2013

...RIN 1625-AA00 Safety Zone; ISAF Nations Cup Grand Final Fireworks Display, Sheboygan...Background and Purpose The ISAF Nations Cup Grand Final fireworks are a City permitted...T09-0755 Safety Zone; ISAF Nations Cup Grand Final Fireworks Display,...

2011-08-25

250

The Relationship of Casa Grande Ruin to Compound A: Research Potential of the in situ Deposits.  

National Technical Information Service (NTIS)

In May and June of 1975, the National Park Service funded archeological fieldwork designed to study the relation of Casa Grande to Compound A in Casa Grande National Monument. Two earlier excavations on the south and east sides of Casa Grande in 1969 were...

D. R. Wilcox

1975-01-01

251

Target manufacturing A ``grand challenge" for inertial fusion  

NASA Astrophysics Data System (ADS)

One of the most significant “grand challenges” for inertial fusion is to develop robust processes capable of manufacturing Inertial Fusion Energy (IFE) targets with ignition-quality specifications in large quantities and at low cost. In addition, these DT-filled, cryogenic targets must be rapidly delivered to the center of a target chamber with high placement accuracy, and tracked on their journey into the chamber with high precision to permit steering of the driver beams for the implosion. Plant designs typically are based on repetition rates of 5 to 10 shots per second (˜ 500,000 targets per day for a 1000 MW(e) power plant). Laser fusion designs typically require alignment of the driver beams with the targets at chamber center to ten's of microns. While much progress has been made, reliably fueling an IFE power plant with high-yield, low-cost, targets will remain a significant “grand challenge” of inertial fusion over the next decade.

Goodin, D. T.; Petzoldt, R. W.; Vermillion, B. A.; Frey, D. T.; Alexander, N. B.; Flint, G. W.; Brown, L. C.; Bozek, A. S.; Goodman, P.; Maksaereekul, W.; Carlson, L.; Besenbruch, G. E.; Kilkenny, J. D.

2006-06-01

252

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

253

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.

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

2010-01-01

254

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

255

City of Grand Rapids Building Solar Roof Demonstration  

SciTech Connect

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

DeClercq, Mark; Martinez, Imelda

2012-08-31

256

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

257

The Development of Supergravity Grand Unification: Circa 1982-1985  

NASA Astrophysics Data System (ADS)

The development in the early eighties of supergravity grand unified models with gravity-mediated breaking of supersymmetry has led to a remarkable progress in the study of supersymmetry at colliders, in dark matter and in a variety of other experimental searches in the intervening years since that time. The purpose of this note is to review this development and describe our construction of this theory in the period 1982-1985.

Arnowitt, R.; Chamseddine, A. H.; Nath, Pran

2012-10-01

258

Shoreline evolution from 1945 to 1988 at Grand Isle, Louisiana  

SciTech Connect

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

Bencaz, C.A.; Birdseye, R.U. (Univ. of Southwestern Louisiana, Lafayette (USA))

1990-09-01

259

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.

Perkins, Dexter

1998-01-01

260

Fremantle law students compete in national grand final  

Microsoft Academic Search

Law students, Daniel O’Neill and Ben Martin from The University of Notre Dame Australia’s Fremantle Campus, recently competed in the grand final of the National Administrative Appeals Tribunal (AAT) mooting competition which was conducted in Sydney.\\u000aThe moot competition consisted of 27 teams from 16 different law schools around Australia. Dan and Ben won the state rounds against the University

Michelle Ebbs

2008-01-01

261

Qp beneath the Rio Grande and East African Rift Zones  

NASA Astrophysics Data System (ADS)

In 1983 teleseismic short-period P waves were recorded in the southwest United States along a linear array which stretched 1000 km across the Rio Grande rift. In 1985 a similar experiment was conducted across the East African rift, in which stations were installed along a 600 km array which ran east-west across Kenya. We have developed a spectral comparison technique to calculate the attenuation at each station. For a given event we simultaneously solve for the effective source spectrum, which includes mantle path effects as well as instrument response, an amplitude factor, and an attenuation operator t* at each station. We use downward projection of P wave travel time residuals to define the lithosphere-asthenosphere boundary, which we infer to upwarp beneath both rifts. The velocity structure so determined is then used to determine the Q of the asthenosphere relative to that of the lower lithosphere. When we assume a lower lithosphere Q of 100, we obtain asthenospheric Q values of 57 beneath the Rio Grande rift and 26 beneath the East African rift, with corresponding velocity contrasts of -8% and -12%, respectively. The low Q values as well as low velocity and density contrasts support the interpretation that the upwarped asthenosphere contains partial melt and that beneath the East African rift the concentration is higher than beneath the Rio Grande. Comparison of the results with experiments on peridotite (Sato et al., 1989a, b) suggests that the asthenosphere is at homologous temperatures of 1.01 and 1.03 with corresponding partial melt fractions of 1% and 3% beneath the Rio Grande and East African rifts, respectively.

Halderman, Thomas P.; Davis, Paul M.

1991-06-01

262

Gauge Coupling Unification in F-Theory Grand Unified Theories  

NASA Astrophysics Data System (ADS)

We investigate gauge coupling unification for F-theory type IIB orientifold constructions of SU(5) grand unified theories (GUT) with gauge symmetry breaking via nontrivial hypercharge flux. This flux has the nontrivial effect that it splits the values of the three minimal supersymmetric standard model gauge couplings at the string scale, thus potentially spoiling the celebrated one-loop gauge coupling unification. It is shown how F-theory can evade this problem in a natural way.

Blumenhagen, Ralph

2009-02-01

263

Flavor physics in an SO(10) grand unified model  

Microsoft Academic Search

In supersymmetric grand-unified models, the lepton mixing matrix can possibly affect flavor-changing transitions in the quark\\u000a sector. We present a detailed analysis of a model proposed by Chang, Masiero and Murayama, in which the near-maximal atmospheric\\u000a neutrino mixing angle governs large new b???s transitions. Relating the supersymmetric low-energy parameters to seven new parameters of this SO(10) GUT model, we perform

Jennifer Girrbach; Sebastian Jäger; Markus Knopf; Waldemar Martens; Ulrich Nierste; Christian Scherrer; Sören Wiesenfeldt

2011-01-01

264

Migrant Worker: A Boy from the Rio Grande Valley.  

ERIC Educational Resources Information Center

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

Hoyt-Goldsmith, Diane

265

Gauge coupling unification in F-theory grand unified theories.  

PubMed

We investigate gauge coupling unification for F-theory type IIB orientifold constructions of SU(5) grand unified theories (GUT) with gauge symmetry breaking via nontrivial hypercharge flux. This flux has the nontrivial effect that it splits the values of the three minimal supersymmetric standard model gauge couplings at the string scale, thus potentially spoiling the celebrated one-loop gauge coupling unification. It is shown how F-theory can evade this problem in a natural way. PMID:19257658

Blumenhagen, Ralph

2009-02-17

266

Gauge Coupling Unification in F-Theory Grand Unified Theories  

Microsoft Academic Search

We investigate gauge coupling unification for F-theory type IIB orientifold constructions of SU(5) grand unified theories (GUT) with gauge symmetry breaking via nontrivial hypercharge flux. This flux has the nontrivial effect that it splits the values of the three minimal supersymmetric standard model gauge couplings at the string scale, thus potentially spoiling the celebrated one-loop gauge coupling unification. It is

Ralph Blumenhagen

2009-01-01

267

Cosmological origin of the grand-unification mass scale  

Microsoft Academic Search

It is shown that the hypothesis of the origin of the universe as a quantum phenomenon leads to an approximate eigenvalue condition for the mass of the particles that are created, i.e., k to the 1\\/2 power m equals O(1). The origin of the universe is interpreted as a phase transition in which the grand unified symmetry is spontaneously broken.

B. Brout; F. Englert; P. Spindel

1979-01-01

268

Precision welding cuts downtime at Grand Coulee Dam  

Microsoft Academic Search

The three large 700-MW generators at Grand Coulee Dam--originally built and installed by Canadian General Electric in the late 1970s--are being upgraded using precision welding techniques and leading edge installation technology. These generators suffered from numerous water leaks at and around the bar water connections, resulting in a significant number of forced repair outages that were increasing in frequency. The

S. Light; E. White

1997-01-01

269

Tephrochronology of core C from Lago Grande di Monticchio  

Microsoft Academic Search

Tephrochronological studies of sediment from Lago Grande di Monticchio have begun with detailed electron microprobe analyses\\u000a of two thickest tephra layers found in Core C. A total of 76 analyses of both layers reveals them to be of trachytic composition,\\u000a of the type erupted from the Campi Flegrei during the last 35,000 years. LGM C41, the lower layer, is a

Anthony J. Newton; Andrew J. Dugmore

270

Probing Grand Unification Through Neutrino Oscillations, Leptogenesis, and Proton Decay  

Microsoft Academic Search

Evidence in favor of supersymmetric grand unification including that based on\\u000athe observed family multiplet-structure, gauge coupling unification, neutrino\\u000aoscillations, baryogenesis, and certain intriguing features of quark-lepton\\u000amasses and mixings is noted. It is argued that attempts to understand (a) the\\u000atiny neutrino masses (especially Delta m^2 (nu_2 -nu_3)), (b) the baryon\\u000aasymmetry of the universe (which seems to need

Jogesh C. Pati

2003-01-01

271

Proton decay in a class of supersymmetric grand unified models  

Microsoft Academic Search

Proton decay is studied in supersymmetric grand unified models. Supersymmetry combined with SU(3)×SU(2)×U(1) at low energies allow in general DeltaB != 0 operators of dimension five as well as four which involve scalar partners of quarks. It is argued that these operators should be forbidden by imposing selection rules. For DeltaB != 0 supersymmetric operators of dimension six which contain

N. Sakai; Tsutomu Yanagida

1982-01-01

272

Structure of the southern Rio Grande rift from gravity interpretation  

NASA Astrophysics Data System (ADS)

Regional Bouguer gravity anomalies in southern New Mexico have been analyzed by two-dimensional wave number filtering and poly-nomial trend surface analysis of the observed gravity field. A prominent, regional oval-shaped positive gravity anomaly was found to be associated with the southern Rio Grande rift. Computer modeling of three regional gravity profiles suggests that this anomaly is due to crustal thinning beneath the southern Rio Grande rift. These models indicate a 25 to 26-km minimum crustal thickness within the rift and suggest that the rift is underlain by a broad zone of anomalously low-density upper mantle. The southern terminus of the anomalous zone is approximately 50 km southwest of El Paso, Texas. A thinning of the rifted crust of 2-3 km relative to the adjacent Basin and Range province indicates an extension of about 9 percent during the formation of the modern southern Rio Grande rift. This extension estimate is consistent with estimates from other data sources. The crustal thinning and anomalous mantle is thought to result from magmatic activity related to surface volcanism and high heat flow in this area.

Daggett, P. H.; Keller, G. R.; Wen, C.-L.; Morgan, P.

1986-05-01

273

A Karst Connection model for Grand Canyon, Arizona, USA  

NASA Astrophysics Data System (ADS)

A new model for the connection of the eastern and western Grand Canyon is proposed that involves westward flow of Redwall karst aquifer water under the Kaibab arch along the steepest hydraulic gradient to discharge at a structural low in a headward-eroding protowestern Grand Canyon. A karst-aquifer hydrological connection was first established between the eastern and western Grand Canyon, then collapse, incision, and headward erosion of the canyon followed this subterranean route. This proposed model is based on what is happening today on the northern Marble Platform where the Redwall-Muav aquifer is still intact. The three sinkhole/caves Ah Hol Sah, Indian Pit, and Black Abyss provide vertical flow routes down to the Redwall karst aquifer, joining water discharging from the Kaiparowits hydrologic basin to the Colorado River along the Fence Springs system. Projecting this process back in time and spatially southward, we propose that at around 6 Ma a sinkhole or sinkholes existed at the confluence of the Colorado River with the Little Colorado River. Little Colorado River water, then flowing northward to an interior lake basin ("Glen Lake") in southern Utah, became pirated down this sinkhole(s), thus causing a reversal of drainage (barbed tributaries) in Marble Canyon. Headward erosion then proceeded up Marble and Little Colorado Canyons from the collapsing sinkhole, with Marble Canyon incision breaching Glen Lake at around 5.5 Ma. This effected the "final connection" and total integration of the Colorado River from Colorado to the Gulf of California.

Hill, C. A.; Eberz, N.; Buecher, R. H.

2008-03-01

274

Field Studies of Geothermal Reservoirs Rio Grande Rift, New Mexico  

SciTech Connect

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

James C Witcher

2002-07-30

275

Grand-canonical Monte Carlo method for Donnan equilibria  

NASA Astrophysics Data System (ADS)

We present a method that enables the direct simulation of Donnan equilibria. The method is based on a grand-canonical Monte Carlo scheme that properly accounts for the unequal partitioning of small ions on the two sides of a semipermeable membrane, and can be used to determine the Donnan electrochemical potential, osmotic pressure, and other system properties. Positive and negative ions are considered separately in the grand-canonical moves. This violates instantaneous charge neutrality, which is usually considered a prerequisite for simulations using the Ewald sum to compute the long-range charge-charge interactions. In this work, we show that if the system is neutral only in an average sense, it is still possible to get reliable results in grand-canonical simulations of electrolytes performed with Ewald summation of electrostatic interactions. We compare our Donnan method with a theory that accounts for differential partitioning of the salt, and find excellent agreement for the electrochemical potential, the osmotic pressure, and the salt concentrations on the two sides. We also compare our method with experimental results for a system of charged colloids confined by a semipermeable membrane and to a constant-NVT simulation method, which does not account for salt partitioning. Our results for the Donnan potential are much closer to the experimental results than the constant-NVT method, highlighting the important effect of salt partitioning on the Donnan potential.

Barr, S. A.; Panagiotopoulos, A. Z.

2012-07-01

276

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

SciTech Connect

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

Geier-Hayes, K.

1994-03-01

277

Fostering Scientific Literacy: Establishing Social Relevance via the Grand Challenges  

NASA Astrophysics Data System (ADS)

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

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

2010-12-01

278

Grande Ronde Model Watershed Program FY 1998 Habitat Projects.  

SciTech Connect

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

Grande Ronde Model Watershed Staff

1999-08-01

279

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 Babcock—Leighton mechanism for the poloidal field generation in the flux transport dynamo model. We present the following results: (a) fluctuations in the meridional circulation are more effective in producing grand minima; (b) both sudden and gradual initiations of grand minima are possible; (c) distributions of durations and waiting times between grand minima seem to be exponential; (d) the coherence time of the meridional circulation has an effect on the number and the average duration of grand minima, with a coherence time of about 30 yr being consistent with observational data. We also study the occurrence of grand maxima and find that the distributions of durations and waiting times between grand maxima are also exponential, like the grand minima. Finally we address the question of whether the Babcock—Leighton mechanism can be operative during grand minima when there are no sunspots. We show that an ?-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

280

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.

Wenner, Jennifer

281

Review of GI Science Trends and Grand Challenges (Invited)  

NASA Astrophysics Data System (ADS)

Geographic Information Science was defined by Goodchild's keynote presentation at the 1990 Symposium on Spatial Data Handling in Zurich and subsequent paper in the International Journal of Geographic Information Systems. Over the past 20 years it has maintained part of its original base but also has grown to accommodate possibilities afforded by new technologies and new societal concerns. Recent review articles and a special session on GI Science grand challenges held at the 2010 meeting of the Association of American Geographers, have provided perspectives on key trends in GI Science, that this AGU presentation now summarizes. The GIS software industry has responded to some and are pending advances on others of these trends.

Gould, M.; Esri Education Team

2010-12-01

282

Rio Grande Rift GPS Measurements 2006-2009  

NASA Astrophysics Data System (ADS)

We use three years of measurements from 25 continuous GPS stations across the Rio Grande Rift in New Mexico and Colorado to estimate surface velocities, time series, baselines, and strain rates. The stations are part of the EarthScope Rio Grande Rift experiment, a collaboration between researchers at the University of Colorado at Boulder, the University of New Mexico, and Utah State University. The network includes 5 east-west station profiles transecting the rift, with the southernmost line in southern New Mexico and the northernmost line in northern Colorado. Most of the stations have shallow-drilled braced monuments installed in 2006-2007 and will remain occupied until 2010-2011 or longer. We also estimate station coordinates and velocities from the 2001 and 2008 High Accuracy Reference Network (HARN) campaigns conducted in Colorado. Initial 72-hour observations were made in the summer of 2001 and were repeated in the summer of 2008. Data from regional Plate Boundary Observatory (PBO) GPS stations are included in the processing to increase station density and extend profiles further to the east and west of the Rio Grande Rift. We use GAMIT/GLOBK to process regional sub-networks that share several common sites well determined in the Stable North America Reference Frame (SNARF). These common sites are used as a tie between the sub-networks and SNARF. Our time series from the first three years of the experiment show excellent monument stability. We have solved for baseline distance as a function of time across each of these lines. Despite what might be expected for a rigid Colorado Plateau moving away from rigid North America about a pole near Colorado, we find no evidence of an increase in Rio Grande Rift opening to the south. Our results suggest that steady-state extension across the rift from northern Colorado to southern New Mexico has an upper bound less than ~1 mm/yr with strain rates less than ~20 nanostrain/yr, although these results are still preliminary. Station velocities will be further examined to quantify the rotation of the Colorado Plateau relative to the High Plains and investigate whether a propagating crack tip model is appropriate for the northern extent of the rift in Colorado.

Berglund, H.; Sheehan, A. F.; Nerem, R.; Choe, J.; Lowry, A. R.; Roy, M.; Blume, F.; Murray, M.

2009-12-01

283

One-particle distribution density in the grand canonical ensemble  

SciTech Connect

The grand canonical ensemble of single-component systems of particles in a region {Lambda} is considered. It is shown that if the distribution density of one particle tends to a finite limit as the diameter of {Lambda} tends to infinity then under fairly general conditions this limit is represented by the function that, as is shown in an earlier paper of the author is under certain conditions, the analytic continuation of the Mayer expansion representing the density as a function of the activity.

Kalmykov, G.I.

1995-01-01

284

Grand unified reactions and dissipation in anisotropic cosmologies  

SciTech Connect

We consider the evolution of anisotropy in universes containing particles interacting by the Grand Unified Theory cross section behavior sigmaapprox.E/sup -2/, in the interval after baryosynthesis (T< or approx. =10/sup 15/ GeV). We find that, contrary to expectations, efficient damping of anisotropy is not a generic feature of these cosmologies, so no limit can be put on their very early anisotropy by demanding that the entropy per baryon be limited to observed values. We demonstrate this by (a) an analytical viscosity approximation, and (b) numerical calculations based on a collision time model.

Rothman, T.; Matzner, R.

1982-12-15

285

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

286

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

SciTech Connect

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

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

2001-04-01

287

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

2013-02-01

288

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

289

Measurement and reproduction accuracy of computer-controlled grand pianos.  

PubMed

The recording and reproducing capabilities of a Yamaha Disklavier grand piano and a Bösendorfer SE290 computer-controlled grand piano were tested, with the goal of examining their reliability for performance research. An experimental setup consisting of accelerometers and a calibrated microphone was used to capture key and hammer movements, as well as the acoustic signal. Five selected keys were played by pianists with two types of touch ("staccato" and "legato"). Timing and dynamic differences between the original performance, the corresponding MIDI file recorded by the computer-controlled pianos, and its reproduction were analyzed. The two devices performed quite differently with respect to timing and dynamic accuracy. The Disklavier's onset capturing was slightly more precise (+/- 10 ms) than its reproduction (-20 to +30 ms); the Bösendorfer performed generally better, but its timing accuracy was slightly less precise for recording (-10 to 3 ms) than for reproduction (+/- 2 ms). Both devices exhibited a systematic (linear) error in recording over time. In the dynamic dimension, the Bösendorfer showed higher consistency over the whole dynamic range, while the Disklavier performed well only in a wide middle range. Neither device was able to capture or reproduce different types of touch. PMID:14587624

Goebl, Werner; Bresin, Roberto

2003-10-01

290

Measurement and reproduction accuracy of computer-controlled grand pianos  

NASA Astrophysics Data System (ADS)

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

Goebl, Werner; Bresin, Roberto

2003-10-01

291

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

292

Grand Unification as a Bridge Between String Theory and Phenomenology  

NASA Astrophysics Data System (ADS)

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

Pati, Jogesh C.

293

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] Arizona Univ., Tempe, AZ (United States). Dept., of Geography

1993-03-01

294

Grand Unification as a Bridge Between String Theory and Phenomenology  

SciTech Connect

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

Pati, Jogesh C.

2006-06-09

295

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

296

Analyzing the economics of tamarisk in the Pecos, Rio Grande, and ...  

Treesearch

Resource impacts analyzed include water, wildlife habitat, and fire risk. ... assessment, sustainability, Western Hemisphere, sustainable management, ecosystem ... of tamarisk in the Pecos, Rio Grande, and Colorado River Watersheds.

297

Proton Stability in Grand Unified Theories and Discrete Gauge Symmetries  

SciTech Connect

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

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

2008-05-13

298

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

SciTech Connect

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

Dias, Alex G. [Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adelia 166, 09210-170, Santo Andre, SP (Brazil); Franco, Edison T.; Pleitez, Vicente [Instituto de Fisica Teorica, Universidade Estadual Paulista, Rua Pamplona 145, 01405-900, Sao Paulo, SP (Brazil)

2007-12-01

299

Testing grand unification at the CERN LHC and SLHC.  

SciTech Connect

We examine the possibility of measuring the three gauge couplings at high scales at the Large Hadron Collider (LHC), in order to see the first steps as they run toward grand unification at much higher energies. Using the minimal supersymmetric standard model (MSSM) with sparticle masses of several hundred GeV as an example of a theory in which the couplings do unify at very high energies, we find that the processes pp{yields}l{sup +}{nu}, pp{yields}l{sup +}l{sup -}, and pp{yields}{gamma}j can be useful to discriminate the SM from the MSSM with masses at the few hundred GeV scale and determine that the couplings are converging at better than the SM prediction toward the GUT scale. Such measurements indirectly probe the existence of lower mass states, charged under the SM gauge groups, but which may be difficult to produce directly or extract from backgrounds at the LHC.

Rainwater, D.; Tait, T.M.P.; High Energy Physics; Univ.of Rochester

2007-06-01

300

Testing grand unification at the CERN LHC and SLHC  

SciTech Connect

We examine the possibility of measuring the three gauge couplings at high scales at the Large Hadron Collider (LHC), in order to see the first steps as they run toward grand unification at much higher energies. Using the minimal supersymmetric standard model (MSSM) with sparticle masses of several hundred GeV as an example of a theory in which the couplings do unify at very high energies, we find that the processes pp{yields}l{sup +}{nu}, pp{yields}l{sup +}l{sup -}, and pp{yields}{gamma}j can be useful to discriminate the SM from the MSSM with masses at the few hundred GeV scale and determine that the couplings are converging at better than the SM prediction toward the GUT scale. Such measurements indirectly probe the existence of lower mass states, charged under the SM gauge groups, but which may be difficult to produce directly or extract from backgrounds at the LHC.

Rainwater, D. [Department. of Physics and Astronomy, University of Rochester, Rochester, New York (United States); Tait, T. M. P. [High Energy Physics Division, Argonne National Lab, Argonne, Illinois (United States)

2007-06-01

301

Potential energy stored by planets and grand minima events  

NASA Astrophysics Data System (ADS)

Recently, Wolff & Patrone (2010), have developed a simple but very interesting model by which the movement of the Sun around the barycentre of the Solar system could create potential energy that could be released by flows pre-existing inside the Sun. The authors claim that it is the first mechanism showing how planetary movements can modify internal structure in the Sun that can be related to solar cycle. In this work we point out limitations of mentioned mechanism (which is based on interchange arguments), which could be inapplicable to a real star. Then, we calculate the temporal evolution of potential energy stored in zones of Sun's interior in which the potential energy could be most efficiently stored taking into account detailed barycentric Sun dynamics. We show strong variations of potential energy related to Maunder Minimum, Dalton Minimum and the maximum of Cycle 22, around 1990. We discuss briefly possible implications of this putative mechanism to solar cycle specially Grand Minima events.

Cionco, Rodolfo G.

2012-07-01

302

Grand Canyon Trekkers: school-based lunchtime walking program.  

PubMed

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

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

2010-12-01

303

Environmental assessment of proposed power rate adjustment, Rio Grande Project  

SciTech Connect

The Western Area Power Administration (Western) proposes to increase the rate charged for electricity generated by facilities of the Rio Grande Project (RGP). Two customers served at wholesale by RGP are Plains Electric Generation and Transmission Cooperative (Plains) and the City of Truth or Consequences (T or C). In compliance with the National Environmental Policy Act of 1969 Western prepared this environmental assessment (EA) to analyze the anticipated impacts of the proposed rate adjustment and its alternative. This environmental assessment is prepared in accordance with the Department of Energy Guidelines for compliance with the National Environmental Policy Act that were published in the Federal Register. Section D of those guidelines states that for rate adjustments for Power Marketing Administrations (PMA) the need for an Environmental Impact Statement depends upon several criteria. 1 tab.

Not Available

1982-01-14

304

Heating facilities for the MGM Grand Hotel, Reno, Nevada  

SciTech Connect

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

Not Available

1981-09-01

305

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

SciTech Connect

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

Not Available

1990-05-16

306

Reconnaissance of the Chemical Quality of Surface Waters of the Rio Grande Basin, Texas.  

National Technical Information Service (NTIS)

The kinds and quantities of minerals dissolved in surface waters of the Rio Grande basin are related principally to the geology of the area and return flow from irrigation. The concentrations of dissolved solids and sulfate in the Rio Grande upstream from...

H. B. Mendieta

1974-01-01

307

"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

308

Open door: U.S. Grand Strategy from 1787 to 2008.  

National Technical Information Service (NTIS)

The grand strategy of the United States is that of the Open Door. Since 1787, the end state of U.S. grand strategy has remained constant: to achieve the purpose laid down in the Preamble to the Constitution. For the last 220 years the ways and means avail...

P. S. Daulton

2008-01-01

309

33 CFR 100.912 - Detroit Belle Isle Grand Prix, Detroit, MI.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Detroit Belle Isle Grand Prix, Detroit, MI. 100.912 Section 100.912 Navigation and Navigable Waters...WATERS § 100.912 Detroit Belle Isle Grand Prix, Detroit, MI. (a) Regulated Area . A regulated area is established to...

2013-07-01

310

Economic impacts of federal policy responses to drought in the Rio Grande Basin  

Microsoft Academic Search

region's scarce water supply. This paper presents an analysis of the impacts of severe and sustained drought and of minimum in-stream flow requirements to support endangered species in the Rio Grande watershed. These impacts are investigated by modeling the physical and institutional constraints within the Rio Grande Basin and by identifying the hydrologic and economic responses of all major water

Frank A. Ward; Brian H. Hurd; Tarik Rahmani; Noel Gollehon

2006-01-01

311

Lower Rio Grande Valley transboundary air pollution project (TAPP). Project report 1996--1997  

Microsoft Academic Search

The Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was a US-Mexico Border XXI project to find out if air pollutants were moving across the border from Mexico into the Lower Rio Grande Valley of Texas and to see what levels of air pollutants were present. Ambient measurements and meteorology were collected data for a year (March 1996-March 1997)

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

1999-01-01

312

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

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

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

313

Grandview and Hermit Trails Historical Research Study, Grand Canyon National Park, Arizona.  

National Technical Information Service (NTIS)

Grand Canyon National Park, located in northwestern Arizona, is one of the oldest and most spectacular of our national parks. Established by act of Congress, and signed into law by President Wilson on February 26, 1919, Grand Canyon National Park, in its ...

D. Sutphen

1990-01-01

314

Where event processing grand challenge meets real-time web: PLAY event marketplace  

Microsoft Academic Search

The Grand Challenge in Event Processing serves as a common goal and mechanism for coordinating research across the spectrum of people working on event processing. The Grand Challenge is a single, though broad, challenge that impacts society which the community can use as a basis for measuring progress in research and application. In this paper we will present an analysis

Nenad Stojanovic; Roland Stühmer; Françoise Baude; Philippe Gibert

2012-01-01

315

28. VIEW OF GRAND CANAL AT 24TH STREET, LOOKING WEST ...  

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

28. VIEW OF GRAND CANAL AT 24TH STREET, LOOKING WEST (compare this photograph with AZ-17-14, taken at the same spot in 1919) Photographer: Mark Durben, April 1989 - Grand Canal, North side of Salt River, Tempe, Maricopa County, AZ

316

Notice of Release of Zapata Germplasm Rio Grande Clammyweed Selected Class of Natural Germplasm  

Microsoft Academic Search

: A selected germplasm of Rio Grande clammyweed (Polanisia dodecandra (L.) DC. ssp. riograndensis Iltis [Capparaceae]) has been released for rangeland restoration and wildlife habitat enhancement plantings in south Texas. Zapata Germplasm Rio Grande clammyweed is a warm-season annual forb originating from seed collected from native plants in Dimmitt and Zapata counties of south Texas. Collections were selected based on

Paula D Maywald; Shelly D Maher; Juan Garza; John Lloyd-Reilley; Forrest S Smith; Andrew W. Scott; Keith A Pawelek

2010-01-01

317

33 CFR 165.158 - Safety Zone: Patchogue Grand Prix, Patchogue Bay, Patchogue, NY.  

Code of Federal Regulations, 2010 CFR

...Grand Prix, Patchogue Bay, Patchogue, NY. 165.158 Section 165.158 Navigation...Grand Prix, Patchogue Bay, Patchogue, NY. (a) Location. The following area...All navigable waters of Patchogue Bay, NY bounded by an area beginning at a...

2009-07-01

318

33 CFR 165.158 - Safety Zone: Patchogue Grand Prix, Patchogue Bay, Patchogue, NY.  

Code of Federal Regulations, 2010 CFR

...Grand Prix, Patchogue Bay, Patchogue, NY. 165.158 Section 165.158 Navigation...Grand Prix, Patchogue Bay, Patchogue, NY. (a) Location. The following area...All navigable waters of Patchogue Bay, NY bounded by an area beginning at a...

2010-07-01

319

Security Studies and the Use of History: Neville Chamberlain's Grand Strategy Revisited  

Microsoft Academic Search

In The Gathering Storm, Winston S. Churchill claimed that during the 1930s British leaders were willfully blind to the German threat and failed to meet it by rearming. Accepting the Churchillian narrative, leading IR scholars regard British grand strategy during the 1930s as glaring example of strategic adjustment failure. This article reappraises British grand strategy during the 1930s and rejects

Christopher Layne

2008-01-01

320

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

Federal Register 2010, 2011, 2012, 2013

...14351-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit...13, 2012, the Grand Coulee Project Hydroelectric Authority (GCPHA) filed an application...feasibility of the P.E. 46A Wasteway Hydroelectric Project, to be located on the...

2012-02-10

321

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

Federal Register 2010, 2011, 2012, 2013

...14349-000] Grand Coulee Project Hydroelectric Authority; Notice of Preliminary Permit...13, 2012, the Grand Coulee Project Hydroelectric Authority (GCPHA) filed an application...feasibility of the P.E. 16.4 Wasteway Hydroelectric Project, to be located on the...

2012-02-13

322

Desenvolvimento e desequilíbrio industrial no Rio Grande do Sul: uma análise secular evolucionária  

Microsoft Academic Search

Development and industrial unbalance in Rio Grande do Sul: an evolutionary secular analysis - This present paper applies both the institutionalistic and neo-Schumpeterian approaches in order to understand the dynamics of industrial development and the consequent evolution of the economic unbalance of the State of Rio Grande do Sul. The hypothesis is that two path dependencies were originated, one was

Marcelo Arend; Silvio Antonio Ferraz Cario

2010-01-01

323

Structural evolution of the Abiquiu embayment, Rio Grande Rift: Implications for the development of transfer zones  

Microsoft Academic Search

The Abiquiu embayment is located along the boundary between the Colorado Plateau and the Rio Grande rift in north central New Mexico. It is an early rift basin bordered by the Canones fault system on its west side that is oblique to the regional trend of the Rio Grande rift and lies within a region where the polarity of the

R. T. Hicks; M. A. Murphy

2006-01-01

324

Public Health for the Internet (') Towards A New Grand Challenge for Information Management  

Microsoft Academic Search

Business incentives have brought us within a small factor of achieving the database community's Grand Challenge set out in the Asilomar Report of 1998. This paper makes the case for a new, focused Grand Challenge: Public Health for the Internet. The goal of PHI (or ') is to enable collectives of hosts on the Internet to jointly monitor and promote

Joseph M. Hellerstein; Tyson Condie; Minos Garofalakisy; Boon Thau Loo; Petros Maniatis; Timothy Roscoe; Nina A. Taft; ETH Zurich

325

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

326

REMOTE MAPPING OF TWO INVASIVE WEEDS IN THE RIO GRANDE SYSTEM OF TEXAS  

Technology Transfer Automated Retrieval System (TEKTRAN)

The Rio Grande is a major source of water for agricultural and municipal uses in Texas and northern Mexico. Water shortages in the Rio Grande have been significantly impacted by the invasion and spread of the invasive weed species giant reed (Arundo donax L.) and saltcedar (Tamarix chinensis Lour.)...

327

REMOTE MAPPING OF SALTCEDAR IN THE RIO GRANDE SYSTEM OF TEXAS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Water shortages in the Rio Grande have been significantly impacted by the invasion and spread of the invasive shrub saltcedar (Tamarix chinensis Lour.). Conventional color aerial photography and videography were acquired simultaneously of the Rio Grande to distinguish saltcedar. The videography w...

328

33 CFR 100.106 - Freeport Grand Prix, Long Beach, NY.  

Code of Federal Regulations, 2010 CFR

...Navigable Waters 1 2009-07-01 2009-07-01 false Freeport Grand Prix, Long Beach, NY. 100.106 Section 100...PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.106 Freeport Grand Prix, Long Beach, NY. (a) Regulated...

2009-07-01

329

33 CFR 100.106 - Freeport Grand Prix, Long Beach, NY.  

Code of Federal Regulations, 2010 CFR

...Navigable Waters 1 2010-07-01 2010-07-01 false Freeport Grand Prix, Long Beach, NY. 100.106 Section 100...PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.106 Freeport Grand Prix, Long Beach, NY. (a) Regulated...

2010-07-01

330

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

Microsoft Academic Search

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

Michael L. McLean; Ryan Seeger; Laurie Hewitt

2004-01-01

331

INDUCTION AND DEVELOPMENT OF GRAND FIR (ABIES GRANDIS LINDL.) CALLUS IN TISSUE CULTURES  

Microsoft Academic Search

The research is a methodological analysis of the first stage of micro-propagation of grand fir (Abies grandis Lindl.), which is included in the group of coniferous tree species introduced in Poland and characterised by a fast growth rate. The experiments were conducted on four types of grand fir explants (mature seeds, mega-gametophytes, mature zygotic embryos, buds collected in springtime from

Katarzyna Nawrot-Chorabik

2007-01-01

332

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

PubMed

A theory about first-order phase transition of pure fluids is proposed. The theory is developed by combining grand canonical ensemble with density functional for homogeneous fluids. It is based on the fact that the grand partition function of one macroscopic volume is the product of the grand partition functions of its subvolumes. Density fluctuations of molecules determine the relation between the grand partition function and the free energy density. By combining pairs of subvolumes successively, the free energy density is transformed and rapidly becomes stationary. The stationary curve versus molecule density is convex and its linear segments represent phase transitions. The transform leads to the new grand canonical method to calculate phase equilibrium, which is more robust than classic ones. The transform suggests that classical van der Waals loop is physical and essential to phase transition. PMID:21682526

Tang, Yiping

2011-06-14

333

A FADC-Based Data Acquisition System for the KASCADE-Grande Experiment  

NASA Astrophysics Data System (ADS)

We present the design and first test results of a new FADC-based data acquisition (DAQ) system for the Grande array of the KASCADE-Grande experiment. The original KASCADE experiment at the Forschungszentrum Karlsruhe, Germany, has been extended by 37 detector stations of the former EAS-TOP experiment (Grande array)to provide sensitivity to energies of primary particles from the cosmos of up to $10^{18}$ eV. The new FADC-based DAQ system will improve the quality of the data taken by the Grande array by digitizing the scintillator signals with a 250 MHz sampling rate. events per second. Two Grande stations have been equipped with the FADC-based data acquisition system and first data are shown.

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

2006-02-01

334

Unusual Recharge Processes near Arroyos of the Rio Grande Aquifer, El Paso/Juarez Area  

NASA Astrophysics Data System (ADS)

The twin-cities of El Paso and Juarez share the water resources of the Hueco Bolson aquifer and overlying Rio Grande aquifer. Both aquifers span the international border between Mexico and the United States. Salinity in the Rio Grande aquifer varies widely, some parts of the shallow aquifer containing less than 1,000 mg/L total dissolved solids (TDS), other parts of the aquifer exceeding 5,000 mg/L TDS. One sizable part of the "Lower Valley" area, approximately 45 km below El Paso contains very dilute water near the outer edge of the floodplain. Historically it had been thought that the dilute waters in this location were derived from recharge from arroyos that drained proximal parts of the Hueco Bolson. Instead, our hydrogen and oxygen isotope data and carbon-14 data indicate that these dilute waters were derived from pre-dam infiltration of the Rio Grande. Relatively light and slightly evaporated pre-dam waters (-11.5 del O18) at the arroyos are also relatively young (60 to 90 percent modern carbon), tagging them as runoff waters from pre-dam snowmelt in Colorado. These isotopically light waters are found up to 110 meters beneath land surface. Prior to Rio Grande rectification and channelization of the mid-1930's, the Rio Grande flowed near the outer edge of the floodplain where these pre-dam, dilute waters are found at depth. Review of predevelopment drill stem tests indicated a permeable zone about 150 to 230 meters deep that had a lower hydraulic head than the overlying Rio Grande aquifer. The permeable zone acted as a predevelopment sink for flow that induced recharge from the Rio Grande and Rio Grande aquifer. Thus, we can account for local predevelopment recharge of the Rio Grande aquifer from infiltration of dilute water from the Rio Grande prior to the historic era of channel rectification, and not from recharge from flanking arroyos as had been postulated by previous researchers.

Merino, M.; Hibbs, B. J.; Hogan, J.; Eastoe, C. J.; Druhan, J.

2005-12-01

335

Fatal grand mal seizure in a Dutch trekker.  

PubMed

A 35-year-old healthy Dutch woman went on a trek (Lang Tang) in Nepal up to an approximate altitude of about 3800 meters. She had no prior history of any medical problems except attacks of generalized epilepsy when she was 19 years old, which had been controlled with antiepileptic medications. She had had no attacks after the age of 20. A CT scan done around that time had apparently been normal. On this trek she had developed diarrhea which had been cured with norfloxacin 400 mg two times per day for 3 days. Two days later, while descending, she developed a grand mal seizure at an altitude of 3300 meters, after which she developed a classic postictal phase but gradually recovered. She developed grand mal seizures again the next day, but when she went to a travel clinic in Kathmandu, she had been seizure free for 72 hours. She also revealed that she had not suffered from acute mountain sickness on the trek. She also had a prior history of gastroenteritis at high altitude which improved significantly with norfloxacin, a quinolone antibiotic. This was corroborated by her party. Upon examination she was fully conscious and oriented to person, place and time. Her pulse was 70 beats per minute and her BP was 110/80 mm of Hg. Her fundi and cranial nerves exam were completely normal. Her abstract thinking, gait, power, tone, reflexes and other facets of her neurologic exam revealed absolutely no abnormalities. Her cardiovascular exam revealed a normal rhythm with no murmurs or bruits. The rest of her exam was also normal. She revealed that she played tennis on a regular basis and was an outdoor person. She had not trekked before in the Himalayas and it was uncertain if she had been to high altitude before. She was on no medications at the time. There was no history of drug abuse. She did not smoke and consumed few alcoholic beverages. She had not consumed any alcohol on the trek. She was advised to get a CT scan (she declined as she was going home to Holland in 2 days) and she was prescribed a loading dose of phenytoin 1 g orally spread over several hours and it was recommended she take 300 mg of phenytoin per day. She was going to see her neurologist in Holland on arrival there. She went to her hotel in Kathmandu while her friends went to fill the prescription of phenytoin. When her friends returned to the hotel she was having another grand mal seizure. Medical help was sought, but she died before the doctor arrived to control her seizures. When the doctor did arrive and carried out CPR for half an hour it was to no avail as she continued to have no pulse or blood pressure. PMID:9876200

Basnyat, B

1998-12-01

336

Rotational turbidity flows and the 1929 Grand Banks earthquake  

NASA Astrophysics Data System (ADS)

Turbidity currents resulting from underwater earthquakes that cause slumps and bring mud into suspension are common in the ocean. The 1929 Grand Banks earthquake, which generated a large turbidity current, is a particular interest because, as the current advanced, all the submarine telegraph cables situated downslope were broken in sequence. Since the location and breakage times are known, these successive breakages provided a unique set of observations of the current's downhill propagation speed. They show that the current's propagation rate was drastically reduced as it advanced toward the abyssal plain. The dramatic reduction in speed has been previously attributed to (i) the natural reduction in the bottom slope which occurs as one approaches the abyssal plain; (ii) settling of the mud out of suspension, which reduces the density at the current; and (iii) bottom friction. In the present paper, a new and powerful alternative to the above explanations is proposed. It is suggested that, since the observed migration of the current lasts for about 10-15 h, the rotation of the earth could dramatically alter both its path and structure. Using exact solutions of the nonlinear shallow water equations, it is shown that due to the earth's spin, the initial downhill migration is severely altered within hours after the earthquake. The gravity current resulting from the earthquake is modeled as an isolated patch of dense and inviscid fluid situated on a parabolic bottom, which can be either concave or convex. The steep portion of the concave bottom corresponds to the continental rise, whereas the flat portion corresponds to the abyssal plain. This reflects the actual situation corresponding to the 1929 Grand Banks earthquake. (Convex bottoms, on the other hand, correspond to turbidity currents situated on top of the continental shelf.) It turns out that, due to the gravitational pull and the rotation of the earth, the patchy gravity current migrates as a blob (with an anticyclonic circulation) along a cycloid whose mean path is parallel to the isobaths. For a concave (convex) bottom the blob becomes an ellipse which is oriented across (along) the isobaths. The cycloid is composed of inertial oscillations with an amplitude of the order of g' S1/ f2 (where g' is the "reduced gravity" g??/?, S1 is the local bottom slope and f is the Coriolis parameter). For all concave bottoms in mid-latitude, the downhill migration of the patch will be slowed down dramatically within one inertial period (i.e. several hours). Although the comparison of our model to the actual current is qualitative (and not quantitative) in nature, this speed reduction is offered as an alternative explanation for the observations. An additional interesting result, unrelated to the 1929 Grand Banks earthquake, is that the convex bottom has a critical curvature beyond which the blob separates from the bottom and penetrates into the ocean interior. That is, as the curvature of the convex bottom increases, a point is reached when the associated centrifugal force is so large that the blob can no longer cling to the floor and must "fall off". Furthermore, for strong bottom curvatures (concave and convex) the blob cannot maintain its coherent structure and breaks up into smaller patches.

Nof, Doron

1996-08-01

337

78 FR 30914 - Grand River Dam Authority Notice of Application for Temporary Variance of License and Soliciting...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF ENERGY Federal Energy Regulatory Commission...Grand River Dam Authority Notice of Application for Temporary Variance...Secretary, Federal Energy Regulatory Commission...Grand River Dam Authority (GRDA...temporary variance, for the year...

2013-05-23

338

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

339

Extreme Drought Conditions in the Rio Grande/Bravo Basin  

NASA Astrophysics Data System (ADS)

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

Gutiérrez, F.; Dracup, J. A.

2001-12-01

340

Hydrogeologic evolution and hydrocarbon potential, southern Rio Grande rift, Texas  

SciTech Connect

Geotectonic events chronicled in the regional rock record around Terlingua include the late Paleozoic Ouachita orogeny, crustal down-warping in the Cretaceous, Laramide uplift and deformation, mid-Tertiary igneous intrusions, and consequent rifting. During the Ouachita orogeny, immense volumes of fluid and gas were driven from impinged sediment masses as continental plates collided and formed an overthrust belt, leading to reservoir mixing, water-washing of oils, fault lubrication, and hydrocarbon devolatilization in places. Later, during more quiescent periods, mixed fluids and gases differentiated as new hydrocarbons were generated in overthrust regions where overburden pressures and temperatures were increased by structural overriding and deeper sediment burial. In the Cretaceous Period, additional petroleum source beds were deposited around Terlingua as a seaway covered the entire Mid-Continent region of North America. However, Laramide uplift and compression subsequently redistributed subsurface fluids and gases in the region, while also exposing much of the Cretaceous section to meteoric recharge and flushing. Mid-Tertiary intrusions followed, generating dry gas in contact with Paleozoic sequences around Terlingua, and distilling some petroleum from source beds in the Cretaceous section. Today, ongoing tectonism and periodic rifting along the Rio Grande continue to influence subsurface fluid and gas distribution in the Terlingua district.

Fallin, J.A. (Texas Water Development Board, Austin (USA))

1989-09-01

341

Grand Army of the Republic Civil War Portraits  

NSDL National Science Digital Library

Shortly after the conclusion of the Civil War, Union veterans formed the Grand Army of the Republic, or the G.A.R. Through the Reconstruction era and the Gilded Age, the G.A.R. was a powerful organization that lobbied the federal government for federal and state Soldiers Homes for invalids, advocated for the creation of Memorial Day, and also provided support for soldier reunions. This digital collection created by the University of Washington Libraries peers into the faces of some of these veterans by offering up this photograph album originally created by the Stevens Post #1 of the G.A.R., based in Seattle. The album contains over 100 portraits, and visitors can browse through them at their leisure. Visitors can zoom in and out on each photograph and they can also use a number of other tools to get the best view of each photograph for their own purposes. Also, while many of the photographs have complete provenance information, some do not, and visitors are welcome to write in with any insights they might have.

342

Wintertime surface energy budget variations in the Grand Canyon region  

SciTech Connect

Few detailed technical studies of the spatial variation of long and shortwave radiation or individual components of the surface energy budget have yet been conducted in areas of complex terrain. The interested observer or resident of complex terrain areas is quite familiar, however, with the rapid variations in climate and weather that occur over short spatial scales. These variations arise on clear undistributed days as well as on days with varying cloud cover, and can be attributed to the propagation of shadows across the landscape, the varying angles of insolation of inclined slopes, the different types of land surface cover (e.g., snow, rock, forests), variations in soil moisture, and the degree of confinement of the topography (deep valley, broad basin, etc.), among other factors. The present paper is an initial attempt to quantify the effects of such factors using a digital topographic model of the complicated topography of the Grand Canyon area of Arizona. This area was chosen for simulation because of the opportunities offered by a winter field experiment conducted there in 1990 by Arizona's Salt River Project. While the field experiment was focused primarily on visibility and air pollution studies, the comprehensive data sets from the experiment are a valuable resource for basic studies of complex terrain weather and climate. 2 refs., 9 figs.

Ruffieux, D.C. (Colorado Univ., Boulder, CO (USA). Cooperative Inst. for Research in Environmental Sciences National Oceanic and Atmospheric Administration, Boulder, CO (USA). Wave Propagation Lab.); Whiteman, C.D. (Pacific Northwest Lab., Richland, WA (USA))

1991-02-01

343

Upwarp of anomalous asthenosphere beneath the Rio Grande rift  

USGS Publications Warehouse

Continental rifts are possible analogues of mid-ocean ridges, although major plate tectonic features are less clearly observed1. Current thermal models of mid-ocean ridges2-4 consist of solid lithospheric plates overlying the hotter, less viscous asthenosphere, with plate thickness increasing away from the ridge axis. The lithospheric lower boundary lies at or near the melting point isotherm, so that at greater depths higher temperatures account for lower viscosity, lower seismic velocities and possibly partial melting. Upwarp of this boundary at the ridge axis concentrates heat there, thus lowering densities by expansion and raising the sea floor to the level of thermal isostatic equilibrium. At slow spreading ridges, a major central graben forms owing to the mechanics of magma injection into the crust5. Topography, heat flow, gravity and seismic studies support these models. On the continents, a low-velocity channel has been observed, although it is poorly developed beneath ancient cratons6-9. Plate tectonic models have been applied to continental basins and margins10-12, but further similarities to the oceanic models remain elusive. Topographic uplift is often ascribed to Airy type isostatic compensation caused by crustal thickening, rather than thermal compensation in the asthenosphere. Here we discuss the Rio Grande rift, in southwestern United States. Teleseismic P-wave residuals show that regional uplift is explained by asthenosphere uplift rather than crustal thickening. ?? 1984 Nature Publishing Group.

Parker, E. C.; Davis, P. M.; Evans, J. R.; Iyer, H. M.; Olsen, K. H.

1984-01-01

344

Land Cover and Evapotranspiration in the Middle Rio Grande Basin  

NASA Astrophysics Data System (ADS)

In regional hydrological studies it is not uncommon to make the assumption that land cover is directly related to evapotranspiration. This assumption then makes it possible to derive regional evapotranspiration estimates based on a land cover map. It is often the only feasible alternative for the establishment of an expensive region wide network of meteorological sensors. The objective of this study is to investigate the relationship between land cover and actual evapotranspiration in the Middle Rio Grande Basin. We use a detailed land cover map of the area to identify the spatial distribution of different land cover classes. We already have used the New Mexico Tech implementation of the Surface Energy Balance Algorithm for Land (SEBAL-NMT) for the generation of five evapotranspiration maps from Landsat images. These maps will be converted to maps of crop coefficients by dividing the evapotranspiration of each pixel by the weather-based reference evapotranspiration determined from measurements at a representative weather station. Next, we will evaluate the spatial and temporal distributions of the crop coefficients for each land cover class. Statistical analyses of these distributions will reveal for each land cover class whether the assumption of a direct relationship between land cover and evapotranspiration is true or false.

Hendrickx, J. M.; Hearer, D. M.; Hong, S.; Borchers, B.; Neville, P.

2005-12-01

345

Environmental Audit, Rifle, Gunnison and Grand Junction UMTRA Project Sites  

SciTech Connect

This report documents the results of the comprehensive baseline Environmental Audit completed for the Uranium Mill Tailings Remedial Action (UMTRA) sites at Grand Junction, Rifle, and Gunnison, Colorado. Included in the Audit were the actual abandoned mill sites, associated transportation and disposal cell facilities, and representative examples of the more than 4,000 known vicinity properties. Sites investigated include: Climax Mill Site, Truck/Train Haul Route, Cotter Transfer Station, Cheney Disposal Cell, Rifle Mill Sites (Old and New Rifle), Gunnison Mill Site, Vicinity Properties, and Estes Gulch and Proposed Landfill Site No. 1 Disposal Cells. The UMTRA Audit was a comprehensive baseline audit which considered all environmental programs and the activities associated with ongoing and planned remediation at the UMTRA sites listed above. Compliance with the National Environmental Policy Act (NEPA) was not considered during this investigation. The Audit Team looked at the following technical disciplines: air, surface water/drinking water, groundwater, soil/sediment/biota, waste management, toxic and chemical materials, quality assurance, radiation, inactive waste sites, and environmental management. 6 figs., 12 tabs.

Not Available

1991-08-01

346

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

347

Grande Ronde Endemic Spring Chinook Salmon Supplementation Project; Lostine River Operations and Maintenance 2007 Smolt Acclimation and Adult Return Report  

Microsoft Academic Search

The Nez Perce Tribe (NPT), through funding provided by the Bonneville Power Administration (BPA), has implemented a Chinook salmon supplementation program (250,000 smolts) on the Lostine River, a tributary to the Grande Ronde River of Oregon. The Grande Ronde Endemic Spring Chinook Salmon Supplementation project, which involves supplementation of the Upper Grande Ronde River and Catherine Creek in addition to

Richard L. Zollman; Russell Eschler; Shawn Sealey

2009-01-01

348

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

Federal Register 2010, 2011, 2012, 2013

...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

349

77 FR 15600 - Special Local Regulation; Emerald Coast Super Boat Grand Prix; Saint Andrew Bay; Panama City, FL  

Federal Register 2010, 2011, 2012, 2013

...1625-AA08 Special Local Regulation; Emerald Coast Super Boat Grand Prix; Saint Andrew...persons on navigable waters during the Emerald Coast Super Boat Grand Prix high speed...from safety hazards associated with the Emerald Coast Super Boat Grand Prix high...

2012-03-16

350

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

SciTech Connect

The over-reaching goal of the Groundwater Grand Challenge component of the Partnership in Computational Science (PICS) was to develop and establish the massively parallel approach for the description of groundwater flow and transport and to address the problem of uncertainties in the data and its interpretation. This necessitated the development of innovative algorithms and the implementation of massively parallel computational tools to provide a suite of simulators for groundwater flow and transport in heterogeneous media. This report summarizes the activities and deliverables of the Groundwater Grand Challenge project funded through the High Performance Computing grand challenge program of the Department of Energy from 1995 through 1997.

NONE

1998-04-01

351

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

NASA Astrophysics Data System (ADS)

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

Leipnik, Mark

352

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)], 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

353

A GRAND DESIGN FOR GALAXY CLUSTERS: CONNECTIONS AND PREDICTIONS  

SciTech Connect

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

Cavaliere, A.; Lapi, A. [Dipartimento di Fisica, Universita degli Studi di Roma 'Tor Vergata', Via della Ricerca Scientifica 1, I-00133 Roma (Italy); Fusco-Femiano, R. [INAF-IASF, Via Fosso del Cavaliere, I-00133 Roma (Italy)

2011-11-20

354

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

355

Matter-Antimatter Oscillations in Grand Unified Theories.  

NASA Astrophysics Data System (ADS)

The SU(5) model of the Grand Unified Theories, in which the strong, weak, and electromagnetic interactions are embedded in one simple group, is reviewed. The minimal version of the model, with only the 24 and 5 of Higgs scalars, reproduces accurately the low-energy parameters, the weak mixing angle sin('2)(theta)(,w) and the mass ratio m(,b)/m(,(tau)), and predicts a unification mass M(,x) compatible with the present experimental bound on the proton lifetime. The baryon-minus-lepton number (B - L) is conserved, even when the 45 of Higgs scalars is added, and distinguishes among various baryon decay modes. The presence of the additional Higgs multiplets 10, 15, and 50 in the minimal SU(5) model breaks the baryon-minus-lepton-number conservation and generates exotic processes, such as matter-antimatter oscillations, e.g., hydrogen-antihydrogen, neutron-antineutron, and scalar meson oscillations, such as K('0)-K('-0), B('0)-B('-0), and D('0)-D('-0). Neutrino oscillations are also present. The phenomenology induced by the additional Higgs scalars into the minimal SU(5) model is discussed. For detectable hydrogen -antihydrogen oscillations and the related process pp ( --->) e('+)e('+) or (mu)('+)(mu)('+), the presence of light color sextets through the additional 45 and 50 is necessary. For neutron-antineutron oscillation to be observable, the presence of the Higgs 15 and 45 with intermediate mass scales is necessary. The effects of the additional Higgs scalars with intermediate mass scales to the low-energy predictions and the proton lifetime of the conventional SU(5) model are also discussed.

Arnellos, Lampros D.

1983-12-01

356

Experimental tests of new SO(10) grand unification  

SciTech Connect

A new approach to SO(10) grand unification was recently proposed by three of the authors (D.C., R.N.M., and M.K.P.), where the mass scale M/sub P/ at which the D-parity symmetry present in the SO(10) group breaks was decoupled from the scale M/sub W//sub R/ of the right-handed currents. In contrast with the conventional treatment of the SO(10) model, SU(2)/sub L/ x SU(2)/sub R/ x G (G is SU(4)/sub C/ or SU(3)/sub C/ x U(1)/sub B/-L) can appear as an intermediate symmetry with g/sub L/not =g/sub R/. Calculations in the one-loop approximation lead to a substantially different picture of intermediate mass scales for SO(10)-symmetry breaking than before. In this paper, this analysis is extended to include two-loop contributions which are significant for several symmetry-breaking chains. All possible chains descending to the standard group SU(2)/sub L/ x U(1)/sub Y/ x SU(3)/sub C/ are examined. A unique chain emerges if one imposes a minimality condition (using the lowest-dimensional Higgs multiplet at each symmetry-breaking stage) and the phenomenological requirements of tau/sub p/..-->..e/sup +/..pi../sup 0/> or =2 x 10/sup 32/ yr, sin/sup 2/theta/sub W/(M/sub W/) = 0.22 +- 0.02, and ..cap alpha../sub s/(M/sub W/) = 0.10--0.12.

Chang, D.; Mohapatra, R.N.; Gipson, J.M.; Marshak, R.E.; Parida, M.K.

1985-04-01

357

SEASONAL VARIATION IN THE BIOGEOCHEMICAL CYCLING OF SESTON IN GRAND TRAVERSE BAY, LAKE MICHIGAN. (R825151)  

EPA Science Inventory

This study describes the biogeochemical cycling of seston in Grand Traverse Bay, Lake Michigan. Seston was characterized by carbon and nitrogen elemental and isotopic abundances. Fluorescence, temperature, light transmittance, and concentrations of dissolved inorganic nitrogen we...

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

From the Rio to the Sierra: An Environmental History of the Middle Rio Grande Basin.  

National Technical Information Service (NTIS)

For more than 450 years the ecosystems of the Middle Rio Grande Basin have evolved dynamically with the interrelated vagaries of climate, land forms, soils, fauna, flora, and most importantly, human activities. Various land use practices have caused an ar...

D. Scurlock

1998-01-01

360

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

Code of Federal Regulations, 2013 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...

2013-07-01

361

Grand challenge commentary: Beyond discovery: probes that see, grab and poke.  

PubMed

Chemical biology is now able to discover molecules that manipulate virtually any biological target or process. It remains a grand challenge to leverage these molecules into useful probes that can be used to address unsolved problems in biology. PMID:21079592

Kritzer, Joshua A

2010-12-01

362

Environments and Organic Communities of North Sound, Grand Cayman Island, B. W. I.  

National Technical Information Service (NTIS)

Environments and ecologic zonations were delineated within North South, Grand Cayman Island. Eight environmental subdivisions were noted: reef crest, rubble flat, moat, rock floor, sand flat, grass plain, restricted lagoon, and shore zone. Reefal communit...

H. H. Roberts

1971-01-01

363

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

364

Health Hazard Evaluation Report HETA 97-0153-2694, The Grand Experience Salon, Chicago, Illinois.  

National Technical Information Service (NTIS)

On March 28, 1997, the National Institute for Occupational Safety and Health (NIOSH) received a confidential employee request to evaluate employee exposures at The Grand Experience Salon, Chicago, Illinois. The requestors expressed concern that certain he...

D. Almaguer R. Malkin

1998-01-01

365

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

Federal Register 2010, 2011, 2012, 2013

...Station; Order Approving Direct and Indirect Transfers of Early Site Permit and Approving Conforming...Commission (NRC) consent to certain license transfers to permit the direct transfer of Grand Gulf ESP Site, to a new limited...

2013-05-13

366

Cleaning National Parks: Using Environmentally Preferable Janitorial Products at Yellowstone and Grand Teton National Parks.  

National Technical Information Service (NTIS)

This report documents the process that the National Park Services and two consultants used at Yellowstone National Park to introduce environmentally preferable cleaning products. Grand Teton National Park implemented a similar program started in April 199...

S. Wakefiled A. Ferre

2000-01-01

367

Lizards Along the Colorado River in Grand Canyon National Park: Possible Effects of Fluctuating River Flows,  

National Technical Information Service (NTIS)

Distribution, abundance, and reproduction of selected reptilian species were studied in riparian habitats along the Colorado River in Grand Canyon National Park. Shoreline and near-shore riparian habitats were found to support the highest densities and hi...

P. L. Warren C. R. Schwalbe

1986-01-01

368

Pyrolysis of Arroyo Grande tar sand and tar sand/oil mixtures.  

National Technical Information Service (NTIS)

Pyrolysis experiments have been performed on Arroyo Grande tar sand and on mixtures of tar sand and SAE 50 oil. Isothermal and nonisothermal tests were performed on a Du Pont model 950 thermogravimetric analyzer (TGA), and larger scale isothermal experime...

T. F. Turner B. E. Thomas L. G. Nickerson

1989-01-01

369

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

370

Lignes ferroviaires à grande vitesse et dynamiques locales : une analyse comparée de la littérature  

Microsoft Academic Search

Dans ce contexte, cette communication s'intéresse spécifiquement au rôle des lignes ferroviaires à grande vitesse (LGV) sur les dynamiques économiques locales. Cette question est en effet d'actualité compte tenu des nombreux projets de lignes à grande vitesse au niveau mondial (USA, Brésil, Chine, etc.) et européen (Portugal, Espagne, France, etc.) et de la diversité des attentes qu'ils suscitent (dynamisme économique

Sylvie Bazin; Christophe Beckerich; Marie Delaplace; Corinne Blanquart; Ligdwine Vandenbossche

2010-01-01

371

The grand potential of the one-dimensional extended Hubbard model up to order beta5  

Microsoft Academic Search

We apply the method of Rojas et al. (J. Math. Phys. 43 (2002) 1390) to calculate the high-temperature expansion of the grand potential of the one-dimensional (1-D) extended Hubbard model up to order beta5 for arbitrary chemical potential. The analytic expansion derived is valid for positive and negative values of U and V. From the beta-expansion of the grand potential

M. Moutinho; E. V. Corrêa Silva; M. T. Thomaz

2004-01-01

372

The grand potential of the one-dimensional extended Hubbard model up to order ? 5  

Microsoft Academic Search

We apply the method of Rojas et al. (J. Math. Phys. 43 (2002) 1390) to calculate the high-temperature expansion of the grand potential of the one-dimensional (1-D) extended Hubbard model up to order ?5 for arbitrary chemical potential. The analytic expansion derived is valid for positive and negative values of U and V. From the ?-expansion of the grand potential

M. Moutinho; E. V. Corrêa Silva; M. T. Thomaz

2004-01-01

373

Nicolas Venette (1633–1698): premier sexologue français et grand pionnier en matière de lithiase urinaire  

Microsoft Academic Search

Résume  Nicolas Venette (Charles Patin) fut un grand médecin du 17e siècle. Il a laissé des ouvrages sur le scorbut, les eaux minérales, la lithiase urinaire, la sexologie, etc. Ses œuvres\\u000a maîtresses furent «La Génération de l’homme ou Tableau de l’amour conjugal» et le «Traité des pierres». Il est considéré comme\\u000a le premier sexologue français et un grand pionnier en matière

Georges Androutsos

2006-01-01

374

Classification of grand fir mosaic habitats. Forest Service general technical report  

SciTech Connect

Five habitat types, an elevation range, and plant indicator species were used to develop a key to Grand Fir Mosaic habitats. These habitats have a slow rate of secondary succession to woody vegetation. Successful management begins with proper identification, which will then allow land managers to prescribe appropriate practices. This paper discusses the process of developing the key and provides supporting information to confirm sites that are part of the Grand Fir Mosaic.

Ferguson, D.E.; Johnson, F.D.

1996-05-01

375

Electromyographic analysis of grand-pli?? in ballet and modern dancers  

Microsoft Academic Search

TREPMAN, E., R. E. GELLMAN, L. J. MICHELI, and C. J. DE LUCA. Electromyographic analysis of grand-plio' in ballet and modem dancers. Med. Sci. Sports Exerc., Vol. 30, No. 12, pp. 1708-1720, 1998. Purpose: The purpose of this report is to describe lower extremity muscle activity in grand-plio', as determined by EMG analysis; to compare and contrast muscle function in

ELLY TREPMAN; RICHARD E. GELLMAN; LYLE J. MICHELI; CARLO J. DE LUCA

1998-01-01

376

Grand Observatories and multiple-OWL for high energy neutrino astrophysics  

Microsoft Academic Search

A possible ``Space Factory'' on the International Space Station (ISS) for ``Grand Observatories'' would permit a large astrophysical observatory in space. Grand-Observatories could revolutionize the great observatories that were hitherto pre-assembled and deployed by the Space Transportation System (STS). The concept of the ISS-Space-Factory envisages a plan of orbital construction, fine-tuning and deployment of large-scale astrophysical instruments into the desired

Yoshiyuki Takahashi; John O. Dimmock; Lloyd W. Hillman; James B. Hadaway; David J. Lamb; Mamoru Mohri; Toshikazu Ebisuzaki

1999-01-01

377

Carbon14 dates at Grande Pile: correlation of land and sea chronologies  

Microsoft Academic Search

Sixteen radiocarbon dates extending back to 70,000 years provide a chronology for the continuous continental pollen record of Grande Pile. This record reflects climatic changes over the last 140,000 years in northeastern France. The cold period initiating the Middle Weichselian, dated previously at 55,000 years, is dated at 70,000 years before the present (B.P.) at Grande Pile. This event is

G. M. Woillard; W. G. Mook

1982-01-01

378

Lithospheric and Upper Mantle Structure of the Rio Grande Rift: Implications for Pure Shear Extension  

Microsoft Academic Search

Results from the Colorado Plateau-Rio Grande Rift-Great Plains seismic transect (LA RISTRA) experiment are consistent with a pure shear extension mechanism for the Rio Grande rift (RGR). LA RISTRA was a 950 km-long PASSCAL broadband seismic line with approximately 18 km station spacing deployed during 1999-2001 along a great circle from Lake Powell, UT to Pecos, TX, crossing the RGR

D. C. Wilson; R. Aster; J. Ni; W. Gao; S. Grand; W. S. Baldridge; S. Semken

2003-01-01

379

Comparison of the radiological dose from the Cerro Grande fire to a natural wildfire.  

PubMed

Since the Cerro Grande fire burned portions of a Department of Energy facility where nuclear weapons research occurs, it is important to determine if the fire posed greater risk to the public than a natural fire. All wildfires release radioactive as well as other toxic pollutants into the atmosphere. Thus, it is important to determine if the radioactive air emissions from the Cerro Grande fire were statistically different than those from a natural wildfire, specifically the Viveash fire. PMID:14592576

Volkerding, John M

2004-01-01

380

Molecular phylogeny of thorny catfishes (Siluriformes: Doradidae).  

PubMed

Doradidae is a monophyletic catfish family endemic to continental South America, and composed of 93 valid species here placed in 31 genera. Existing phylogenetic hypotheses for Doradidae are derived from comprehensive analyses of morphological data, and a single molecular-based study on a limited subset of taxa. To provide a robust molecular phylogeny commensurate with those based on morphology, we gathered original and published sequence data for 86 species-level taxa (at least 70 valid species plus 16 new or questionably nominal species) and all genera of Doradidae, as well as 10 species (nine genera) of Auchenipteridae and three species and genera of Aspredinidae as outgroups. 3011 base pairs were aligned for two mitochondrial genes (cytochrome c oxidase subunit 1, and 16S ribosomal RNA) and one nuclear gene (recombination activating gene 1), and analyzed for a total of 143 specimens (130 doradids, 10 auchenipterids and three aspredinids). Tree topologies generated by Maximum Parsimony, Maximum Likelihood, and Bayesian analyses were largely congruent, and are compared to existing phylogenies based on morphology and molecules. Although many of the relationships supported by our molecular analyses corroborated those based on morphology, others are newly hypothesized or remain in conflict. The monotypic Wertheimeria, Franciscodoras and Kalyptodoras, for example, form a newly proposed clade, and the subfamily Astrodoradinae is placed at the base of the doradid tree. The monotypic Doraops and Centrochir, endemic to Caribbean drainages north and west of the Andes, are sister to Pterodoras and Platydoras, respectively, two genera that are widely distributed in Atlantic drainages. Additional biogeographic implications are discussed for hypothesized relationships among doradids. Molecular evidence strongly supports synonymization of monotypic Merodoras with Amblydoras, and transfer of Amblydoras bolivarensis to genus Scorpiodoras. Furthermore, we consider Opsodoras ternetzi to be more properly placed in the genus Nemadoras. The genus Opsodoras may warrant synonymization with Hemidoras, and the monophyly of genus Ossancora is not supported; however, we refrain from taxonomic decisions regarding those taxa until a broader spectrum of doradids can be submitted to further morphological and molecular phylogenetic analyses. PMID:23467005

Arce H, Mariangeles; Reis, Roberto E; Geneva, Anthony J; Sabaj Pérez, Mark H

2013-03-04

381

Probing supersymmetric grand unification with CP and flavor violations  

NASA Astrophysics Data System (ADS)

A major part of my thesis is devoted to explore certain issues of CP and avor violations in conjunction with those of fermion masses and neutrino oscillations in the context of supersymmetric grand unification. An attempt is made to present a unified description of four phenomena: (i) fermion masses and mixings, (ii) neutrino oscillations, (iii) CP non conservation and (iv) flavor violations in both the quark and the lepton sectors, in accord with observations, within a single predictive framework based on supersymmetric SO(10) or an effective G(224) symmetry. Including standard model and supersymmetric contributions, it is shown that the framework correctly accounts for DeltamK, Delta mBd, S(Bd ? J/psiKs) and epsilonK. While SUSY-contribution is small (few%) for the first three quantities, that to epsilonK is found to be sizable (˜ 20-25%) and negative relative to the standard model as desired. The model predicts S(Bd ? ?Ks) to be in the range +(0.65-0.73), close to the standard model prediction; it yields Re(epsilon'/epsilon)SUSY ? +(4 - 14) x 10-4. The model also predicts that the electric dipole moments of the neutron and the electron should be discovered with improvements in current limits by factors of 10 to 100. Assuming SUSY-messenger scale to be higher than the GUT scale, it is found that post-GUT physics, which has commonly been neglected in the literature, contributes significantly to CP and avor violating processes. Including such contributions, the model predicts enhanced rates for mu ? egamma, tau ? mugamma and muN ? eN which should be seen in forthcoming experiments. A comparison of two promising SO(10) models, one with hierarchical fermion mass matrices (by Babu, Pati and Wilczek), and the other with lop-sided mass matrices (by Albright and Barr) is done, as regards their predictions regarding CP and avor violations. Crucial tests are noted which would sharply distinguish between the models. Envisaging string origin of the effective unification symmetry in 4D, the second part of my thesis will explore the issue of gauge coupling unification at the string scale when supersymmetric standard model and an extension is embedded in an effective G(224) or G(214) ? SU(2)L x U(1) I3R x SU(4) c symmetry near the GUT scale.

Rastogi, Parul

382

Water resources of the Grand Portage Indian Reservation, northeastern Minnesota  

USGS Publications Warehouse

Proterozoic bedrock aquifers are the principal source of water supply in the Grand Portage Indian Reservation. The bedrock aquifers are the (1) North Shore Volcanic Group; (2) Keweenawan Volcanic and intrusive rocks and (3) Rove Formation. Sand and gravel aquifers are a small source of water. The median estimate of transmissivity determined from data for 17 wells completed in bedrock was 17 feet squared per day; the range was from 3 to 500 feet squared per day. Estimated transmissivity did not show a clear trend in variation with depth of bed- rock penetrated by the well borehole. Reported yield of 19 wells completed in bedrock had a range of 1 to 100 gallons per minute and a median of 7 gallons per minute. Hydrofracturing of two wells completed in bedrock increased their yield from about 0.25 and 0.05 gallons per minute before hydrofracturing, to about 1.2 and 1.5 gallon per minute, respectively, after hydrofracturing. Although the estimated yield from the two wells was increased by nearly 5 and by 30 times from hydrofracturing, the well yield after hydro- fracturing was still small. Water types determined from analyses of water from nine wells completed in bedrock were sodium-chloride, calcium-chloride, sodium-bicarbonate, and calcium-bicarbonate. Water from three wells had concentrations of dissolved solids and dissolved chloride that were higher than their respective SMCLs (Secondary Maximum Con- taminant Levels) established by the USEPA (U.S. Environmental Protection Agency). Concentrations of dissolved arsenic, barium, chromium, copper, silver, zinc, and selenium in water from the nine wells were less than their respective USEPA MCLs (Maximum Contaminant Levels) and USEPA SMCLs. The concentration of dissolved lead in water from the nine wells was less than the detection limit of 100 ug/L (micrograms per liter). Water from an observation well located about 200 feet from an abandoned landfill and screened from 79 to 84 feet below land surface in a gravel aquifer had a trace amount of toluene (0.2 ug/L). The presence of toluene suggested possible contamination.

Ruhl, J. F.

1995-01-01

383

Predicting floodplain boundary changes following the Cerro Grande wildfire  

NASA Astrophysics Data System (ADS)

A combined ArcView GIS-HEC modelling application for floodplain analysis of pre- and post-burned watersheds is described. The burned study area is located on Pajarito Plateau near Los Alamos National Laboratory (the Laboratory), where the Cerro Grande Wildfire burned 42 878 acres (17 352 ha) in May 2000. This area is dominated by rugged mountains that are dissected by numerous steep canyons having both ephemeral and perennial channel reaches. Vegetation consists of pinon-juniper woodlands located between 6000 and 7000 ft (1829-2134 m) above mean sea level (MSL), and Ponderosa pine stands between 7000 and 10000 ft MSL (2134-3048 m). Approximately 17% of the burned area is located within the Laboratory, and the remainder is located in upstream or adjacent watersheds. Pre-burn floodplains were previously mapped in 1990-91 using early HEC models as part of the hazardous waste site permitting process. Precipitation and stream gauge data provide essential information characterizing rainfall-runoff relationships before and after the fire. They also provide a means of monitoring spatial and temporal changes as forest recovery progresses. The 2000 summer monsoon began in late June and provided several significant runoff events for model calibration. HEC-HMS modelled responses were sequentially refined so that observed and predicted hydrograph peaks were matched at numerous channel locations. The 100 year, 6 h design storm was eventually used to predict peak hydrographs at critical sites. These results were compared with pre-fire simulations so that new flood-prone areas could be systematically identified. Stream channel cross-sectional geometries were extracted from a gridded 1 ft (0·3 m) digital elevation model (DEM) using ArcView GIS. Then floodpool topwidths, depths, and flow velocities were remapped using the HEC-RAS model. Finally, numerous surveyed channel sections were selectively made at crucial sites for DEM verification. These evaluations provided timely guidance that influenced the decision to construct several flood detention structures that were completed in September 2000. Published in 2001 John Wiley & Sons, Ltd.

McLin, Stephen G.; Springer, Everett P.; Lane, Leonard J.

2001-10-01

384

Gamma Ray and Neutrino Detector Facility (GRANDE). Progress report for Task C  

SciTech Connect

GRANDE is an imaging, water Cerenkov detector, which combines in one facility an extensive air shower array and a high-energy neutrino detector. The authors proposed that the detector be constructed in phases, beginning with an active detector area of 31,000 m{sup 2} (GRANDE-I) and expanding to a final size of 100,000--150,000 m{sup 2}. Some of the characteristics of GRANDE-I are shown. GRANDE utilizes the proven technology of water Cerenkov detectors. A feasibility study has shown that the powerful background discrimination inherent in the directional property of the Cerenkov light and in the large size of the detector, will allow successful surface operation with an acceptably small trigger rate. The engineering analysis showed that the facility can be built over the reasonably short time span of 4 years using well-known construction technologies. Combining the neutrino detector and the extensive air shower array in a single facility greatly enhances the physics potential of GRANDE. It also achieves a considerable saving in cost and time since a sizable fraction of such costs, for either experiment, is in the site preparation. Additionally, the neutrino detector benefits from the efficient cosmic-ray anticoincidence afforded by the gamma detector. A site has been selected (a water-filled quarry near Little Rock, Arkansas) and an engineering firm has completed the preliminary design of the detector structure. They also have designed the water purification system, and have preliminary designs for the data harvesting electronics and other systems. During this past year the authors learned that the proposal to construct GRANDE-I was not approved by DOE. The construction of such a detector was considered premature by the reviewers and one major technical concern still dominated the reviews. In order to answer the technical concerns while waiting for the results from the current generation of gamma-ray detectors, they propose to construct and operate a small prototype of the GRANDE detector.

Sobel, H.W.; Yodh, G.B.

1991-08-01

385

Upper Triassic-Lower Jurassic salt basin southeast of the Grand Banks  

NASA Astrophysics Data System (ADS)

A grid of multichannel seismic reflection (MCS) profiles has been used to delineate and map a large, apparently tectonically controlled basin and associated diapiric province beneath the continental slope and rise southeast of the Grand Banks of Newfoundland. The depocenter, for which we propose the name Salar basin, is defined both landward and seaward by pronounced hinges in acoustic basement. It is approximately 400 km long, 35-70 km wide, and covers an area of approximately 20,000 km2. The southern end of the basin is marked by the intersection of the Southeast Newfoundland Ridge with the South Bank High on the Grand Banks, and the northern end is bounded by the southwestern margin of Flemish Cap. The Salar basin generally parallels the much smaller Carson basin, which lies beneath the Grand Banks immediately to the west, and it merges with this basin north of 45°22'N. Based upon correlation with contiguous deposits sampled by drilling in the Carson basin, we infer piercements filling the Salar basin to be mobilized Late Triassic-Early Jurassic evaporites, probably predominantly halite. A consequent early Mesozoic age for the Salar basin implies a multi-stage rifting history for the Newfoundland Basin, as has been documented for the adjacent Grand Banks. Initial extension, which probably formed the Salar basin's bounding basement hinge zones, occurred in Late Triassic-Early Jurassic time, and was associated with rifting of North America from Africa and extension in western Europe. The presence of early Mesozoic evaporites in a basin southeast of the Grand Banks suggests development of a significant, but shallow and restricted, seaway between the Grand Banks and the Iberian peninsula, probably connected northward with coeval salt provinces of northwestern Europe. A second rift phase related to separation of Iberia and the Grand Banks affected the Grand Banks and Salar basin in Late Jurassic to Early Cretaceous time, after a period of epeirogenic subsidence during the Early and Middle Jurassic. Uplift associated with this extension led to the development of the widespread ``U'' (Avalon) unconformity across the Grand Banks, the Salar basin and the Newfoundland Basin out to the J-Anomaly and may have induced the first halokinesis in the Salar basin. The second rift phase culminated in the initiation of seafloor spreading in mid-Early Cretaceous (Aptian) time at a location now marked by the J-Anomaly.

Austin, James A.; Tucholke, Brian E.; Uchupi, Elazar

1989-04-01

386

Sudden transitions and grand variations in the solar dynamo, past and future  

NASA Astrophysics Data System (ADS)

The solar dynamo is the exotic dance of the sun's two major magnetic field components, the poloidal and the toroidal, interacting in anti-phase. On the basis of new data on the geomagnetic aa index, we improve our previous forecast of the properties of the current Schwabe cycle #24. Its maximum will occur in 2013.5 and the maximum sunspot number Rmax will then be 62 ± 12, which is within the bounds of our earlier forecasts. The subsequent analysis, based on a phase diagram, which is a diagram showing the relation between maximum sunspot numbers and minimum geomagnetic aa index values leads to the conclusion that a new Grand Episode in solar activity has started in 2008. From the study of the natural oscillations in the sunspot number time series, as found by an analysis based on suitable wavelet base functions, we predict that this Grand Episode will be of the Regular Oscillations type, which is the kind of oscillations that also occurred between 1724 and 1924. Previous expectations of a Grand (Maunder-type) Minimum of solar activity cannot be supported. We stress the significance of the Hallstatt periodicity for determining the character of the forthcoming Grand Episodes. No Grand Minimum is expected to occur during the millennium that has just started. The full text of all quoted papers by the two authors of this paper can be consulted at www.cdejager.com/sun-earth-publications/.

De Jager, Cornelis; Duhau, Silvia

2012-06-01

387

Examinaton of the February 2011 Forbush Decrease (Muon) by Project GRAND  

NASA Astrophysics Data System (ADS)

Project GRAND is a cosmic ray experiment located north of the University of Notre Dame. It consists of 64 huts of proportional wire chambers that make up a 100 m x 100 m detector array. These detectors identify muons produced when cosmic rays reach the Earth's upper atmosphere. The muon counting rates remain fairly constant, but this is not the case when there are solar flares and coronal mass ejections. An interesting occurrence called a Forbush Decrease was seen in February 2011 in data from the Oulu Neutron Monitor, a lower energy experiment than GRAND. This was caused by a cloud of charged particles and the magnetic fields moving toward Earth which deflect the path of charged cosmic rays that come from outside our solar system and bombard the Earth's upper atmosphere. GRAND's data was examined and a similar decrease at the same time as Oulu was found along with additional phenomenon not seen by Oulu, which usually sees more structure than GRAND due to its ability to detect lower energy particles more easily affected by solar activity. Several steps, such as looking at pressure correction and good hut corrections, have been taken to correct GRAND's data for non-physics effects. An upper air temperature correction remains to be done as well.

Ball, Molly

2011-11-01

388

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

389

Study of Pollutant Transportation At Ipiranga Oil Refinery, Rio Grande Region, Brazil, Using Iscst Model  

NASA Astrophysics Data System (ADS)

With the goal of warning the population and industry about the harms caused to human health, a study of pollutant concentrations has been made at Rio Grande ­ RS region, Brazil, on emissions by IPIRANGA Oil Refinery, using the ISCST ­ Industrial Source Complex Term - dispersion model, sources are situated at 3201'40"S and 5205'40" and have distinct heights. For this study, a period of 5 days for each season of the year has been taken. The ISCST is started with meteorological data obtained from the Harbor Administration, located in Rio Grande, Brazil. The SO2 concentrations, obtained by numeric modeling, are compared to data collected by stations located around Rio Grande region. The results show that Sea Breeze has large influence on pollutant dispersion, making that local pollution levels be bellow legal standards.

Cunha, P. T.; Alves, R. C. M.; Teixeira, E. C.

390

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

391

Test of hadronic interaction models with the KASCADE-Grande muon data  

NASA Astrophysics Data System (ADS)

KASCADE-Grande is an air-shower observatory devoted for the detection of cosmic rays with energies in the interval of 1014 - 1018 eV, where the Grande array is responsible for the higher energy range. The experiment comprises different detection systems which allow precise measurements of the charged, electron and muon numbers of extensive air-showers (EAS). These data is employed not only to reconstruct the properties of the primary cosmic-ray particle but also to test hadronic interaction models at high energies. In this contribution, predictions of the muon content of EAS from QGSJET II-2, SIBYLL 2.1 and EPOS 1.99 are confronted with the experimental measurements performed with the KASCADE-Grande experiment in order to test the validity of these hadronic models commonly used in EAS simulations.

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

2013-06-01

392

Extensional tectonics and stratigraphy of Hibernia oil field, Grand Banks, Newfoundland  

SciTech Connect

The tectonic evolution of the Grand Banks involved several episodes of rifting and sequential development of the continental margin. The dominant period of rifting and basin formation in the central Grand Banks was late Callovian to Aptian. Extensional failure of the central Grand Banks crust probably occurred along a shear zone that dipped gently to the west. Listric normal basin-forming faults merge at depth with this detachment system. The listric Murre fault soles at 26 km (16 mi), creating the very deep Jeanne d'Arc basin. Cross-basin transfer faults accommodated different amounts and rates of extension and resulted in the conspicuous offset pattern and funnel-shaped geometry of the Jeanne d'Arc basin. The Hibernia oil field is associated with one of these structural salients. 23 figures, 3 tables.

Tankard, A.J.; Welsink, H.J.

1987-10-01

393

Age and diet of fossil california condors in grand canyon, Arizona.  

PubMed

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. PMID:17751565

Emslie, S D

1987-08-14

394

Spatial and seasonal variations of the contamination within water body of the Grand Canal, China.  

PubMed

To delineate the character of contaminations in the Grand Canal, China, a three-year study (2004-2006) was conducted to investigate variations the water quality in the canal. Results showed that the variation of water quality within the Grand Canal was of there is remarkable spatial and seasonal heterogeneity regarding water quality within the Canal. Values of contaminants in dry-season were obviously higher than those in wet-season. Sites influenced strongly by industry and urbanization showed higher contents of nutrients and lower levels of dissolved oxygen in water body; moreover these sites were severely polluted by dissolved metals with the contents of cadmium, chromium and copper exceeding the Criteria Maximum Concentration (CMC), US EPA. Multivariate statistical analysis suggested nutrient and dissolved metals pollution was the dominant environmental problems within the Canal. Anthropogenic influences played a dominant role in the character of contaminations in the Grand Canal. PMID:20149943

Xiaolong, Wang; Jingyi, Han; Ligang, Xu; Qi, Zhang

2010-02-10

395

UMTRA Project water sampling and analysis plan, Grand Junction, Colorado. Revision 1, Version 6  

SciTech Connect

This water sampling and analysis plan describes the planned, routine ground water sampling activities at the Grand Junction US DOE Uranium Mill Tailings Remedial Action (UMTRA) Project site (GRJ-01) in Grand Junction, Colorado, and at the Cheney Disposal Site (GRJ-03) near Grand Junction. The plan identifies and justifies the sampling locations, analytical parameters, detection limits, and sampling frequencies for the routine monitoring stations at the sites. Regulatory basis is in the US EPA regulations in 40 CFR Part 192 (1994) and EPA ground water quality standards of 1995 (60 FR 2854). This plan summarizes results of past water sampling activities, details water sampling activities planned for the next 2 years, and projects sampling activities for the next 5 years.

NONE

1995-09-01

396

Intermediate mass scales in the new SO(10) grand unification in the one-loop approximation  

SciTech Connect

Chang, Mohapatra, and Parida have recently developed a new approach to SO(10) grand unification where D-parity breaking (at scale M/sub P/) and SU(2)/sub R/ breaking are decoupled. We have extended their one-loop analysis of the intermediate mass scales in the new SO(10) grand unification. We derive the general formulas for sin/sup 2/theta/sub W/(M/sub W/) and ..cap alpha..(M/sub W/)/..cap alpha../sub s/(M/sub W/) for all breakings of SO(10) and examine the constraints these formulas place on the mass scales of the theory for the different chains. We identify only two (marginal) chains that lead to detectable values of the intermediate mass scales when M/sub P/ = M/sub X/, the grand unification scale.

Gipson, J.M.; Marshak, R.E.

1985-04-01

397

Geology of the Grand Canyon: Interpreting its rock layers and formation  

NSDL National Science Digital Library

In this culminating activity, students will be assessed on what they have learned during the Geology unit of their Earth Science class. After conducting classroom and field studies on geology students will utilize this knowledge to interpret the rock layers and formation of the Grand Canyon. Outside of class students will read/review a website and complete a study guide to be reviewed by the teacher to assess students' learning. Following teacher review of study guides, the next class period(s) will be a discussion and questioning session(s) on the formation of the Grand Canyon.

398

Grande Ronde Basin Chinook Salmon Captive Brood and Conventional Supplementation Program, 2000 Annual Report.  

SciTech Connect

Endangered Species Permit Number 1011 (formerly Permit No. 973) authorizes ODFW to take listed spring chinook salmon juveniles from Catherine Creek (CC), Lostine River (LR) and Grande Ronde River (GR) for research and enhancement purposes. Modification 2 of this permit authorizes ODFW to take adults for spawning and the production and release of smolts for the Captive and Conventional broodstock programs. This report satisfies the requirement that an annual report be submitted. Herein we report on activities conducted and provide cursory data analyses for the Grande Ronde spring chinook salmon Captive and Conventional broodstock projects from 1 January-31 December 2000.

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

2003-03-01

399

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

400

Dawn GRaND Raw (EDR) Mars Flyby 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.

2009-12-01

401

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

402

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

403

Hadronic interactions and EAS muon pseudorapidities investigated with the Muon Tracking Detector in KASCADE-Grande  

NASA Astrophysics Data System (ADS)

The Muon Tracking Detector in the KASCADE-Grande EAS experiment allows the precise measurement of shower muon directions up to 700 m distance from the shower center. This directional information is used to study the pseudorapidity of muons in EAS, closely related to the pseudorapidity of their parent mesons. Moreover, the mean value of muon pseudorapidity in a registered shower reflects the longitudinal development of its hadronic component. All of this makes it a good tool for testing hadronic interaction models. The possibilities of such tests given by the KASCADE-Grande experimental setup are discussed and an example of the obtained muon pseudorapidity spectrum is shown.

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

2009-12-01

404

QUALIDADE DA ÁGUA DO RIBEIRÃO LA VRINHA NA REGIÃO ALTO RIO GRANDE - MG , BRASIL 1 Water quality on Lavrinha Stream in Alto Rio Grande region, Minas Gerais State, Brazil  

Microsoft Academic Search

The main purpose of this work was to study the surface water quality behavior, continuously throughout the time, at the headwater watershed of the Grande River, MG. The watershed drains into Grande River area of 687 ha and is enclosed by the Mantiqueira Mountains. The samples were collected at six points in Lavrinha Stream, main tributary of the watershed, from

Daniel Brasil Ferreira Pinto; Antônio Marciano da Silva; Carlos Rogério de Mello; Gilberto Coelho

405

Future Directions in Control, Dynamics, and Systems: Overview, Grand Challenges, and New Courses  

Microsoft Academic Search

This paper summarizes the findings and recommendations of a recent panel on Future Di- rections in Control, Dynamics, and Systems, sponsored by the US Air Force Office of Scientific Research. A set of grand challenges that illustrate some of the recommendations and opportu- nities are provided. Finally, the paper describes two new courses being developed at Caltech that are aligned

Richard M. Murray

2003-01-01

406

Site observational work plan for the UMTRA Project Site at Grand Junction, Colorado  

SciTech Connect

The U.S. Department of Energy (DOE) has prepared this initial site observational work plan (SOWP) for the Uranium Mill Tailings Remedial Action (UMTRA) Project site in Grand Junction, Colorado. This SOWP is one of the first UMTRA Ground Water Project documents developed to select a compliance strategy that meets the UMTRA ground water standards (40 CFR Part 192, as amended by 60 FR 2854) for the Grand Junction site. This SOWP applies information about the Grand Junction site to the compliance strategy selection framework developed in the UMTRA Ground Water Project draft programmatic environmental impact statement (PEIS). This risk-based, decision-making framework identifies the decision logic for selecting compliance strategies that could be used to meet the ground water standards. The DOE goal is to use the observational method to implement a cost-effective site strategy that complies with the ground water standards and protects human health and the environment. Based on an evaluation of the site characterization and risk assessment data available for the preparation of this SOWP, DOE proposes that the most likely compliance strategy for the Grand Junction site is no remediation based on the application of supplemental standards. This proposed strategy is based on a conceptual site model that indicates site-related contamination is confined to a limited-use aquifer as defined in the ground water standards.

NONE

1996-03-01

407

Grand challenge problems in environmental modeling and remediation: groundwater contaminant transport  

Microsoft Academic Search

This report describes briefly the work of the Center for Subsurface Modeling (CSM) of the University of Texas at Austin (and Rice University prior to September 1995) on the Partnership in Computational Sciences Consortium (PICS) project entitled Grand Challenge Problems in Environmental Modeling and Remediation: Groundwater Contaminant Transport.

Todd Arbogast; Steve Bryant; Clint N. Dawson; Mary F. Wheeler

1998-01-01

408

Achieving large ends with limited means: grand strategy in global health.  

PubMed

Unprecedented attention is focused on global health, with a four-fold increase in development assistance in the last 15 years and the scope of global health expanding beyond infectious disease to include chronic disease and health systems strengthening. As the global impact of health is more widely understood, it has become a crucial element of international relations, economic development, and foreign affairs. At this potential leverage point in the global health movement, the application of grand strategy is of critical importance. Grand strategy, i.e., the development and implementation of comprehensive plans of action to achieve large ends with limited means, has been refined through centuries of international relations and the management of states but has been inadequately applied to global health policy and implementation. We review key principles of grand strategy and demonstrate their applicability to a central global health issue: maternal mortality. The principles include: start with the end in mind, take an ecological approach, recognize that tactics matter, use positive deviance to characterize practical solutions and foster scale-up, and integrate timely intelligence and data into health interventions and improvement efforts. We advocate for the greater use of grand strategy in global health. PMID:24037468

Curry, Leslie A; Luong, Minh A; Krumholz, Harlan M; Gaddis, John; Kennedy, Paul; Rulisa, Stephen; Taylor, Lauren; Bradley, Elizabeth H

2010-06-01

409

Recirculating flow and sedimentation in the Colorado River in Grand Canyon, Arizona  

Microsoft Academic Search

Debris fans debouching into the bottom of Grand Canyon create rapids and flow separation in the Colorado River. The patterns of flow and the behavior of recirculation zones formed by flow separation are consistent throughout the Canyon's length. Zones of recirculating flow occur along the margin of channel expansions. Recirculation zones are comprised of one primary eddy; secondary eddies and

John C. Schmidt

1990-01-01

410

SITUATIONAL PREVENTION OF PUBLIC DISORDER AT THE AUSTRALIAN MOTORCYCLE GRAND PRIX  

Microsoft Academic Search

Situational analysis of chronic violence occurring between police and spectators at the Australian Motorcycle Grand Prix led to formulation of hypotheses about the causes of the violence. These hypotheses proposed a relationship between the violence and: (1) police tactics, (2) spectator and police frustration, (3) facilities at the event and its organization, and (4) media sensationalism. Working with the Victoria

Arthur Veno

411

LOWER RIO GRANDE VALLEY TRANSBOUNDARY AIR POLLUTION PROJECT (TAPP) (MAIN REPORT)  

EPA Science Inventory

The purpose of the Lower Rio Grande Valley Transboundary Air Pollution Project (TAPP) was to obtain air quality data for a full year at three border monitoring sites to assess anthropogenic and biogenic emission impacts and transboundary air pollution transport in the Lower Rio...

412

The source and origin of the 1929 grand banks turbidity current inferred from sediment budgets  

Microsoft Academic Search

Side-scan data from the epicentral area of the 1929 Grand Banks earthquake and cores from the resulting turbidite are used to determine a sediment budget for the event. The 1929 turbidite has a volume of about 185 cubic km, which is mostly sand. Features indicating failure on the continental slope are observed only in muddy sediment. A major source of

David J. W. Piper; Ali E. Aksu

1987-01-01

413

Late stage slope failure in the wake of the 1929 Grand Banks earthquake  

Microsoft Academic Search

Small volume (<15 km3) debris flows which were triggered by the 1929 earthquake postdate the period of high velocity turbidity current flow resulting from that earthquake. They thus could not have contributed sediment to the 1929 cable-breaking turbidity currents. Both the proposed ``Grand Banks Slump'' and another large scale debris flow also attributed to the 1929 event, are shown to

John E. Hughes Clarke

1990-01-01

414

Investigation of techniques for improvement of seasonal streamflow forecasts in the upper Rio Grande basin  

Microsoft Academic Search

The purpose of this dissertation is to develop and evaluate techniques for improvement of seasonal streamflow forecasts in the Upper Rio Grande (URG) basin in the U.S. Southwest. Three techniques are investigated. The first technique is an investigation of the effects of the El Nino\\/Southern Oscillation (ENSO) on temperature, precipitation, snow water equivalent (SWE), and the resulting streamflow at a

Song-Weon Lee

2004-01-01

415

Modeling Water-Surface Elevations and Virtual Shorelines for the Colorado River in Grand Canyon, Arizona.  

National Technical Information Service (NTIS)

Using widely-available software intended for modeling rivers, a new one-dimensional hydraulic model was developed for the Colorado River through Grand Canyon from Lees Ferry to Diamond Creek. Solving one-dimensional equations of energy and continuity, the...

C. S. Magirl M. J. Breedlove P. G. Griffiths R. H. Webb

2008-01-01

416

LEGAL AND PHYSICAL CONSTRAINTS ON THE CONJUNCTIVE USE WATER SUPPLY OF THE MIDDLE RIO GRANDE REGION  

Microsoft Academic Search

Conjunctive use of surface water and groundwater is being pursued in many regions to maximize water availability throughout dry and wet periods. Successful regional water management will recognize the physical and legal constraints on these integrated supplies. Entities developing regional water plans in the Middle Rio Grande basin face a challenging set of constraints. Legal constraints on water use in

Deborah L. Hathaway; Kevin G. Flanigan; Karen J. Lewis

417

INCOSE Model-Based Systems Engineering Grand Challenge: Example Enterprise Basic Operations in OpEMCSS  

Microsoft Academic Search

INCOSE has issued a grand challenge to develop and apply Model Based Systems Engineer- ing (MBSE) to challenging problems within various domains of knowledge. MBSE is a system design and analysis methodology that makes use of system simulation and other models to evaluate the operation of a Complex Adaptive System (CAS) in its operational environment. One such challenging area is

Jack Ring; John R. Clymer; Kevin Yonemoto; Jose S. Garcia

2008-01-01

418

La gouvernance des grands projets d’infrastructure publique - Benchmarking des cadres de gouvernance  

Microsoft Academic Search

Le Secrétariat du Conseil du trésor (SCT) du Québec a confié au CIRANO le mandat de développer un cadre de gouvernance pour la planification et la gestion de grands projets d’infrastructure publique (GPIP). Le chercheur principal pour ce projet est Roger Miller de l’École Polytechnique de Montréal, qui a cumulé une expérience étendue dans ce domaine, notamment dans le cadre

Joanne Castonguay; Roger Miller

2006-01-01

419

Problèmes et techniques de management d'un grand projet scientifique international:le LHC  

Microsoft Academic Search

Le LHC, grand collisionneur de hadrons en cours de construction au CERN, à Genève, pose des problèmes de management particuliers dus au caractère mondial de son financement, de sa construction et sa future utilisation. La gestion technique du projet a donc nécessité la mise en place d'outils spécifiques, qui font largement appel au Web et qui sont décrits ci-dessous. Enfin,

Paul E Faugeras

2000-01-01

420

Sediment transport in the Rio Grande, an Andean river of the Bolivian Amazon drainage basin  

Microsoft Academic Search

The Rio Grande is one of the main Andean tributaries of the Rio Mamore, a tributary of the Rio Madeira which is the main southern affluent of the Amazon. The use of historical (1969-1990) and unpublish­ ed data on sediment transport from 15 Andean gauging stations, made it possible to assess the very strong temporal variability of river sediment-transport. Most

JEAN LOUP GUYOT; JACQUES BOURGES; JOSE CORTEZ

1994-01-01

421

Tornado Damage at the Grand Gulf, Mississippi Nuclear Power Plant Site: Aerial and Ground Surveys.  

National Technical Information Service (NTIS)

A tornado struck the Grand Gulf nuclear power generating station, Port Gibson, Mississippi, about 11:30 p.m. on April 17, 1978. Storm damage investigators from the University of Chicago and Texas Tech University were dispatched to survey the damage. The m...

T. T. Fujita J. R. McDonald

1978-01-01

422

The grand-canonical asymmetric exclusion process and the one-transit walk  

Microsoft Academic Search

The one-dimensional asymmetric exclusion process (ASEP) is a paradigm for nonequilibrium dynamics, in particular driven diffusive processes. It is usually considered in a canonical ensemble in which the number of sites is fixed. We observe that the grand-canonical partition function for the ASEP is remarkably simple. It allows a simple direct derivation of the asymptotics of the canonical normalization in

R A Blythe; W Janke; D. A. Johnston; R. Kenna

2004-01-01

423

Health hazard evaluation report HETA 88-153-2072, Buckeye Hills Career Center, Rio Grande, Ohio  

Microsoft Academic Search

In response to a request from employees at the Buckeye Hills Career Center (SIC-8249) located in Rio Grande, Ohio, an investigation was made of symptoms experience by the Cosmetology instructors which were believed to be associated with exposures to hair care and cosmetology products used in the Cosmetology Clinic. Employees were interviewed, and environmental sampling was conducted. The use of

D. Almaguer; L. M. Blade

1990-01-01

424

Lack Of Grand Strategy: Ramifications for the U.S. in Asia.  

National Technical Information Service (NTIS)

The United States is at a crossroads of fiscal austerity with an unclear grand strategy. The result leaves the joint force in a state of fluctuation as to the future of America's national security. Recently, the Executive branch of the U.S. government pro...

C. R. Amrhein

2013-01-01

425

West Indian Fruit Fly Cooperative Eradication Program: Lower Rio Grande Valley, Texas. Environmental Assessment, October 2000.  

National Technical Information Service (NTIS)

West Indian fruit flies have been found recently in fruit groves in the Lower Rio Grande Valley of Texas. One female was detected in a grapefruit grove in Mission (Hidalgo County), Texas, on August 2, 2000. Subsequently, two more adult females were detect...

R. G. Spaide

2000-01-01

426

Gas Dynamics and Star Formation in the Grand-Design Spiral NGC 5248  

Microsoft Academic Search

We present a multi-wavelength study of the gas dynamics and star formation in the grand-design spiral galaxy NGC 5248, illustrating how coupled dynamical mechanisms can generate spiral structures from tens of kpc to hundreds of pc, drive disk evolution, and fuel star formation on progressively smaller scales. Although to date NGC 5248 has been classified as unbarred or claimed to

S. Jogee; S. Laine; I. Shlosman; N. Z. Scoville; J. H. Knapen; P. Englmaier; C. D. Wilson

2001-01-01

427

Chemical Stratigraphy of Grande Ronde Basalt, Pasco Basin, South-Central Washington.  

National Technical Information Service (NTIS)

Grande Ronde Basalt in the Pasco Basin, south-central Washington, can be subdivided into three chemical types and two chemical subtypes based on x-ray fluorescence major element analysis of samples from seven deep core holes and three surface sections. Th...

P. E. Long R. K. Ledgerwood C. W. Myers S. P. Reidel R. D. Landon

1980-01-01

428

Tectonics of the Jemez lineament in the Jemez Mountains and Rio Grande rift  

Microsoft Academic Search

The Jemez lineament is a NE trending crystal flaw that controlled volcanism and tectonism in the Jemez Mountains and the Rio Grande rift zone. The fault system associated with the lineament in the rift zone includes, from west to east, the Jemez fault zone southwest of Valles-Toledo caldera complex, a series of NE trending faults on the resurgent dome in

M. J. Aldrich

1986-01-01

429

Grande vitesse ferroviaire et développement économique local : une revue de la littérature  

Microsoft Academic Search

Des projets de lignes à grande vitesse existent dans de nombreux pays. Les acteurs économiques des territoires desservis ou qui le seront, ont eu ou ont de multiples attentes concernant cette desserte qui modifie l'accessibilité de leurs territoires : dynamisme économique, arrivée de nouvelles entreprises et populations, développement du tourisme, ou de projets immobiliers résidentiels et de bureaux autour des

Corinne Blanquart; Ligdwine Vandenbossche

2010-01-01

430

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. FULÉ; DANIEL C. LAUGHLIN

431

Small anti theta and an invisible axion as automatic consequences of grand unification  

SciTech Connect

The possibility is explored of solving the strong CP problem in a grand unified theory in which a global Peccei-Quinn symmetry is an automatic consequence of the gauge structure. The low energy effective theory differs from that of the standard model only by the presence of an extremely light, weakly interacting axion.

Hall, L.J.

1981-01-01

432

Rio Grande Lidar Bank Erosion Monitoring: Preliminary 2007-2008 Results and Survey Design Considerations.  

National Technical Information Service (NTIS)

Bank stability is an important issue along the Albuquerque reach of the Middle Rio Grande. On one hand, stability and property protection is desirable along the urban corridor. However, stability may not be beneficial to the endemic species that inhabit t...

J. Coonrod J. Stormont J. D. Frechette T. F. Wawrzyniec

2010-01-01

433

Recreational impacts on backcountry campsites in Grand Canyon National Park, Arizona, USA  

Microsoft Academic Search

Backcountry campsites were studied in three desert vegetation types (pinyon-juniper, catclaw, and desert scrub) in Grand Canyon National Park, Arizona. Relationships between amount of use and amount of impact were examined within each vegetation type. The area disturbed was small, but impacts were generally severe. Important impacts were increased soil compaction and associated decreases in infiltration rates and soil moisture

David N. Cole

1986-01-01

434

Proposed Grand Strategy for Defeating Bin Laden and His Al Qaeda Network.  

National Technical Information Service (NTIS)

This paper examines Osama bin Laden, his al Qaeda network and the corresponding strategic context; examines the United States' goals and interests; and applies the concept of center of gravity to develop a grand strategy for their defeat. Osama bin Laden ...

M. A. Johnstone

2002-01-01

435

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,…

Smith, Craig

2001-01-01

436

Impacts of recreational SCUBA diving on coral communities of the Caribbean island of Grand Cayman  

Microsoft Academic Search

The impact of recreational SCUBA diving on coral reefs of the Cayman Islands, British West Indies, was assessed from 63 10-m video transects, filmed on reefs in the West Bay area of Grand Cayman. Three high use and three low use dive sites were sampled at distances of c. 15, 55 and 200 m from mooring buoys, in addition to

Jamie A. Tratalos; Timothy J. Austin

2001-01-01

437

Economic implications for the biological control of Arundo donax: Rio Grande Basin  

Technology Transfer Automated Retrieval System (TEKTRAN)

Giant reed, Arundo donax L., is a large, bamboo-like plant native to the Mediterranean region. It has invaded several thousand hectares of the Rio Grande riparian habitat in Texas and Mexico. The United States Department of Agriculture-Agricultural Research Service (USDA-ARS) is investigating four...

438

Economic implications for the biological control of Arundo donax: Rio Grande Basin  

Technology Transfer Automated Retrieval System (TEKTRAN)

Giant reed, Arundo donax L., is a large bamboo-like plant native to the Mediterranean region. It has invaded several thousand hectares of the Rio Grande riparian habitat in Texas and Mexico. The United States Department of Agriculture-Agricultural Research Service (USDA-ARS) is investigating four ...

439

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...

440

Interdisciplinary approach to the ecological status assessment of Rio Quequén Grande watershed in Argentina  

Microsoft Academic Search

The Río Quequén Grande (RQG) watershed is located in the southeast section of Buenos Aires province, in Argentina, and it has an area of about 9.940 km2. The RQG outflows into the Atlantic Ocean, near the city of Necochea and it is a representative example of Argentinean River that drains the flat pampas of the region. The region is very

L. B. Teruggi; E. Caporali; S. Sala; M. J. Kristensen

2010-01-01

441

IMPLEMENTATION OF A REMOTE SENSING-SNOWMELT RUNOFF FORECASTING SYSTEM IN THE RIO GRANDE BASIN  

Technology Transfer Automated Retrieval System (TEKTRAN)

Information on snow water resources is a major concern in river basins where the snowmelt runoff can be a significant contributor to total discharge, even in basins such as the Rio Grande where desert makes up much of the downstream area. Snow resource information is especially useful in the Rio Gr...

442

Status, Trends, and Potential of Biological Communities of the Grand Calumet River Basin.  

National Technical Information Service (NTIS)

The highly modified Grand Calumet River now constitutes one of the smallest major watersheds of the Calumet region. Though only 13 miles long and with almost no natural surface drainage area, it now flows through one of the most industrialized areas in th...

P. B. Moy R. L. Whitman

2004-01-01

443

THE CARBONATE CHEMISTRY OF GRAND BAHAMA BANK WATERS: AFTER 18 YEARS ANOTHER LOOK  

Microsoft Academic Search

Major features of the chemistry of northern Grand Bahama Bank waters found in 1981 were similar to those found by Broecker and Takahashi in 1962 and 1963. Measured variations in salinity and extent of CaCO 3 removal are close to the same. Our findings indicate a more complex salinity distribution on the northern banks, probably resulting from transport of high

John W. Morse; Frank J. Millero; Valerie Thurmond; Elissa Brown; H. G. Ostlund

1984-01-01

444

Grand Strategy, Strategic Culture, PracticeThe Social Roots of Nordic Defence  

Microsoft Academic Search

The article produces a model for empirical study of the security and defence policies of states, with a starting point in the literature on strategic culture (e.g. Gray, Klein, Johnston) and grand strategy (e.g. Kennedy, Posen, Kier). We identify two key problems with the literature. First, it only superficially touches base with the social sciences grouped around the concept of

Iver B. Neumann; Henrikki Heikka

2005-01-01

445

On the (mis-) Behavior of Thunderstorms at the Grand Canyon, Arizona  

Microsoft Academic Search

The area density of cloud-to-ground (CG) lightning strokes reported by the NLDN near the Grand Canyon, Arizona, show strong variations near the canyon rim. The average area density of strokes outside the canyon is about 8-times larger than within the canyon, and there is a clear increase in the frequency of lightning attachments near the top edge of the canyon

K. L. Cummins; M. M. Saba; W. Schulz; C. Noggle; M. G. Quick; A. C. Saraiva; E. P. Krider

2009-01-01

446

Effect of nitrogen fertilization on leaf phenolic production of grand fir seedlings  

Microsoft Academic Search

A significant decrease in production of total phenolics was apparent with nitrogen fertilization in three of five seed sources of grand fir [Abies grandis (Dougl.) Lindl.]. Subsequent extraction and identification of phenolics indicated that two compounds increased with fertilization, and when grouped by biosynthetic origin into cinnamic acids, benzoic acids, and flavonoids, no differences were apparent with fertilization. Total biomass

R. M. Muzikal; K. S. Pregitzer

1992-01-01

447

Confidential inquiry into perinatal mortality in the Lower Rio Grande Valley, 1988  

Microsoft Academic Search

A review of 1985 neonatal death statistics in the Lower Rio Grande Valley of Texas revealed an excessive perinatal death rate among Hispanics compared to Anglos. In order to identify factors contributing to perinatal mortality in the region and to determine if existing perinatal services were adequate, a confidential inquiry into each 1988 perinatal death was performed.^ Medical risk factors

Beryl Craig Vallejo

1991-01-01

448

Habitat light, colour variation, and ultraviolet reflectance in the Grand Cayman anole, Anolis conspersus  

Microsoft Academic Search

Data from a diversity of sources are consistent with the hypothesis that the Grand Cayman anole,Anolis conspersus , is descended directly from Anolis grahami of Jamaica. Although the two species have remained morphologically similar, coloration in A. conspersus has changed considerably from that of its ancestor. The most dramatic difference is seen in dewlap colour, where A. conspersus has evolved

2001-01-01

449

The Meaning of Race and Violence in Grand Theft AutoSan Andreas  

Microsoft Academic Search

This research study investigates how youths actually play Grand Theft Auto: San Andreas and what meanings they make from it. This study finds that players use their own experiences and knowledge to interpret the game—they do not passively receive the games' images and content. The meanings they produce about controversial subjects are situated in players' local practices, identities, and discourse

Ben DeVane; Kurt D. Squire

2008-01-01

450

The Geographical Imaginations of Video Games: Diplomacy, Civilization, America's Army and Grand Theft Auto IV  

Microsoft Academic Search

Video games are important sites for critical geopolitics, and this article engages in the analysis of Diplomacy, Civilization, America's Army, and Grand Theft Auto IV in order to understand how the geopolitical imaginary works in popular culture. It makes the argument that the claim to geopolitical and tactical verisimilitude is at odds with the representations of violence and the body

Mark B. Salter

2011-01-01

451

Results of an Evaluation of the Peer Support Program at Grand Valley Institution for Women  

Microsoft Academic Search

ACKNOWLEDGMENTS We would like to thank Dr. Jane Barker, psychologist and Coordinator of the PST program at Grand Valley Institution for Women (GVI), for her support and cooperation with this study. We would also like to thank Kendra Delveaux, our colleague at Correctional Service of Canada’s research branch, who helped in the data collection phase of this project. Finally, we

Fariya Syed; Kelley Blanchette

2000-01-01

452

76 FR 9341 - Grand River Dam Authority; Notice of Application Accepted for Filing, Soliciting Comments...  

Federal Register 2010, 2011, 2012, 2013

...Ottawa Counties, Oklahoma. g. Filed Pursuant to: Federal Power Act, 16 USC 791a-825r. h. Applicant Contact: Tamara E. Jahnke, Assistant General Counsel, Grand River Dam Authority, P.O. Box 409, Vinita, OK 74301; 918-256- 5545;...

2011-02-17

453

77 FR 58820 - Grand River Dam Authority; Notice of Application Accepted for Filing, Soliciting Comments...  

Federal Register 2010, 2011, 2012, 2013

...Cherokees. g. Filed Pursuant to: Federal Power Act, 16 U.S.C. 791a-825r. h. Applicant Contact: Ms. Tamara E. Jahnke, Assistant General Counsel, Grand River Dam Authority, P.O. Box 409, Vinita, Oklahoma 74301, (918) 256-5545....

2012-09-24

454

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.

455

The wilderness use simulation model applied to Colorado River boating in Grand Canyon National Park, USA  

Microsoft Academic Search

A modification of the Shechter-Lucas Wilderness Use Simulation Model (WUSM) for peak season boating on the Colorado River through Grand Canyon National Park, USA, is evaluated as a tool for making management decisions. A new microcomputer program to select trip itineraries for inclusion in the WUSM that was developed as part of this study is presented. This program simplifies user

A. Heaton Underhill; A. Busa Xaba; Ronald E. Borkan

1986-01-01

456

Palæomagnetic Study of Rocks from the Grand Canyon of the Colorado River  

Microsoft Academic Search

DR. S. K. RUNCORN has recently described measurements of remanent magnetization made on sediments collected from the Colorado Plateau of Arizona1 and has compared these results with those made on rocks of similar age from Great Britain. During the summer of 1954 I also collected from the Grand Canyon of the Colorado River for the purpose of making studies of

Richard R. Doell

1955-01-01

457

Structural Control of the Rapids and Pools of the Colorado River in the Grand Canyon  

Microsoft Academic Search

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.

Robert Dolan; Alan Howard; David Trimble

1978-01-01

458

A grand ensemble Monte Carlo study of krypton adsorbed on graphite  

Microsoft Academic Search

Computer simulations have been carried out along the 90·2 K isotherm for the adsorption of Kr on graphite. The grand ensemble Monte Carlo technique was used and the adsorbate and adsorbent were represented by widely accepted two body potentials. Additional runs were also carried out in which the third body force, due to the adsorbent substrate was introduced into the

J. S. Whitehouse; D. Nicholson; N. G. Parsonage

1983-01-01

459

Environmental Degradation in a Dependent Region: The Rio Grande Valley of Mexico and Texas.  

ERIC Educational Resources Information Center

Traces the interrelationships among dependence, environmental degradation, and human health in the Rio Grande Valley of Mexico and Texas. Presents a case study on environmental factors threatening family health in households located on both sides of the border; the health problems can be overcome by addressing restrictive zoning, health services,…

Jones, Richard C.

1999-01-01

460

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

Federal Register 2010, 2011, 2012, 2013

In accordance with the Federal Land Policy and Management Act of 1976 (FLPMA) and the Federal Advisory Committee Act of 1972 (FACA), the U.S. Department of the Interior, Bureau of Land Management (BLM) Rio Grande Natural Area Commission will meet as indicated...

2012-11-05

461

FOTOSSENSIBILIZAÇÃO EM ANIMAIS DE PRODUÇÃO NA REGIÃO SEMI-ÁRIDA DO RIO GRANDE DO NORTE  

Microsoft Academic Search

O presente trabalho objetivou estudar a ocorrência de surtos naturais de fotossensibilização que vêm ocorrendo em diversas espécies animais na região semi-árida do Estado do Rio Grande do Norte. Foram visitadas 17 propriedades nas quais estavam ocorrendo casos naturais desta patologia. Foram realizadas entrevistas com os tratadores, exames clínicos e provas séricas bioquímicas de função hepática nos animais afetados. Também

M. F. Macedo; M. B. Bezerra; B. Soto Blanco

462

78 FR 28164 - Special Local Regulation; Aguada Offshore Grand Prix, Bahia de Aguadilla; Aguada, PR  

Federal Register 2010, 2011, 2012, 2013

...Regulation; Aguada Offshore Grand Prix, Bahia de Aguadilla; Aguada, PR AGENCY: Coast...special local regulation on the waters of Bahia de Aguadilla in Aguada, Puerto Rico during...The races will be held on the waters of Bahia de Aguadilla in Aguada, Puerto...

2013-05-14

463

Health Hazard Evaluation Report HETA 88-153-2072, Buckeye Hills Career Center, Rio Grande, Ohio.  

National Technical Information Service (NTIS)

In response to a request from employees at the Buckeye Hills Career Center (SIC-8249) located in Rio Grande, Ohio, an investigation was made of symptoms experience by the Cosmetology instructors which were believed to be associated with exposures to hair ...

D. Almaguer L. M. Blade

1990-01-01

464

Benchmarking, Profiling and Performance Analysis of the Java Grande Benchmarking Suite  

Microsoft Academic Search

In previous papers a number of issues concerning the Java Grande Benchmarking suite have been raised. This paper hopes to examine these issues by conducting a new set of benchmarks and analysing the results. It then investigates the relationship between bench- marks within the suite, while reviewing the various profiling utilities available for Java. Finally, it discusses the design and

Robin Freeman

465

Grand challenge problems in environmental modeling and remediation: groundwater contaminant transport  

SciTech Connect

This report describes briefly the work of the Center for Subsurface Modeling (CSM) of the University of Texas at Austin (and Rice University prior to September 1995) on the Partnership in Computational Sciences Consortium (PICS) project entitled Grand Challenge Problems in Environmental Modeling and Remediation: Groundwater Contaminant Transport.

Todd Arbogast; Steve Bryant; Clint N. Dawson; Mary F. Wheeler

1998-08-31

466

78 FR 22814 - Special Local Regulations; Miami Super Boat Grand Prix, Atlantic Ocean; Miami Beach, FL  

Federal Register 2010, 2011, 2012, 2013

...Grand Prix, Atlantic Ocean; Miami Beach, FL AGENCY...regulation on the Atlantic Ocean east of Miami Beach...West Building Ground Floor, Room W12-140, 1200...W12-140 on the ground floor of the Department of Transportation...waters of the Atlantic Ocean east of Miami...

2013-04-17

467

Side-scan Sonar Imaging of the Colorado River, Grand Canyon.  

National Technical Information Service (NTIS)

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 Da...

D. Hogg F. L. Wong P. Galanis R. Anima

2007-01-01

468

Radon barrier field-test monitoring at Grand Junction tailings pile  

Microsoft Academic Search

Pacific Northwest Laboratory (PNL), as part of the Department of Energy (DOE) Uranium Mill Tailings Remedial Action Project (UMTRAP) technology development program, has conducted three large-scale field tests of radon covers at the uranium mill tailings pile in Grand Junction, Colorado. The barrier systems, monitored for radon flux for over two years, include earthen, multilayer, and asphalt emulsion covers. Results

H. D. Freeman; J. N. Hartley; G. W. Gee

1983-01-01

469

Upper mantle convection beneath the central Rio Grande rift imaged by P and S wave tomography  

Microsoft Academic Search

We present models for upper mantle P and S velocity structure beneath a southwestern United States transect extending from near the center of the Colorado Plateau across the Rio Grande rift to the Great Plains. The models were derived from travel times of compressional and shear seismic phases recorded by the La Ristra passive seismic array deployed from July 1999

Wei Gao; Stephen P. Grand; W. Scott Baldridge; David Wilson; Michael West; James F. Ni; Richard Aster

2004-01-01

470

CISSUS SICYOIDES C. LINNAEUS (VITACEAE) A POTENTIAL EXOTIC PEST IN THE LOWER RIO GRANDE VALLEY, TEXAS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Cissus sicyoides C. Linnaeus, a perennial vine native to tropical Mexico, Central America, and the Caribbean, has recently been discovered in the Lower Rio Grande Valley, Texas. A dense population of this exotic species has been located in a brushy area along a canal network and in two adjacent cit...

471

L'harmonisation de la TVA dans la perspective du grand marché européen  

Microsoft Academic Search

[eng] VAT Harmonization and « European Grand Market » G. Cornilleau To complete the unification of the European Economic Market, starting in 1992, the States of the Community are considering the abandonment of all custom controls at Intra-European boarders. Primarily symbolic, this measure will lead to some significant changes in the tax systems of each country involved. In particular, it

Gérard Cornilleau

1988-01-01

472

Midwest appropriate technology small grants program. Grand Traverse community alcohol project. Final report  

SciTech Connect

Findings are presented resulting from the joint energy project in Grand Traverse, Michigan. The production of butanol and acetone from corn by various clostridium strains has been evaluated. Plant design and flow plans are completed. The project has since been cancelled due to lack of funds. (DMC)

McIntyre, J.T.

1982-01-01

473

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.

474

Evaluation of the Lower Rio Grande Valley Contracts with Non-VA providers.  

National Technical Information Service (NTIS)

Under increasing pressure to expand services and to improve access for veterans living in the Lower Rio Grande Valley (LRGV), the South Texas Veterans Health Care System contracted with non-VA hospitals. Under the contracts, veterans are referred to non-V...

J. E. Piihl

1999-01-01

475

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

476

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

477

Rio Grande Erosion Potential Demonstration - Report for the National Border Technology Program  

Microsoft Academic Search

This demonstration project is a collaboration among DOE, Sandia National Laboratories, the University of Texas, El Paso (UTEP), the International Boundary and Water Commission (IBWC), and the US Army Corps of Engineers (USACE). Sandia deployed and demonstrated a field measurement technology that enables the determination of erosion and transport potential of sediments in the Rio Grande. The technology deployed was

RICHARD A. JEPSEN; JESSE D. ROBERTS; RICHARD LANGFORD; JOSEPH GAILANI

2001-01-01

478

WATER MARKETING AND WATER RIGHTS TRANSFERS IN THE LOWER RIO GRANDE VALLEY, TEXAS  

Microsoft Academic Search

Water marketing, which involves the purchase or transfer of water supplies or rights between a willing buyer and seller, represents on strategy for redistributing water resources among competing users. Most frequently, municipalities purchase agricultural water rights to augment their existing supply and help meet projected water demand. In Texas, the most active water market is in the lower Rio Grande

F. Andrew Schoolmaster

1991-01-01

479

The western margin of the Rio Grande rift in northern New Mexico: An aborted boundary?  

Microsoft Academic Search

The northwestern margin of the Espanola basin, part of the Rio Grande rift in northern New Mexico, is characterized by a zone >17 km wide of oblique-slip faults that off-set upper Paleozoic and Mesozoic strata of the eastern Colorado Plateau from Eocene and younger sedimentary rocks of the rift. Along this margin, a reasonably complete section of pre- and synrift

W. S. Baldridge; L. W. Barile; Bin Wang

1994-01-01

480

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

481

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

Code of Federal Regulations, 2013 CFR

... (3) All vessel traffic not involved with the Suncoast Offshore Grand Prix, exiting New Pass between 10 a.m. and 4 p.m. EDT shall exit at New Pass Channel daybeacon #3 (27°26.46ⲠN, 82°41.7ⲠW, LLNR 18100) and #4...

2013-07-01

482

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...

483

THE RISE AND FALL OF OPEN SOLAR FLUX DURING THE CURRENT GRAND SOLAR MAXIMUM  

SciTech Connect

We use geomagnetic activity data to study the rise and fall over the past century of the solar wind flow speed V{sub SW}, the interplanetary magnetic field strength B, and the open solar flux F {sub S}. Our estimates include allowance for the kinematic effect of longitudinal structure in the solar wind flow speed. As well as solar cycle variations, all three parameters show a long-term rise during the first half of the 20th century followed by peaks around 1955 and 1986 and then a recent decline. Cosmogenic isotope data reveal that this constitutes a grand maximum of solar activity which began in 1920, using the definition that such grand maxima are when 25-year averages of the heliospheric modulation potential exceeds 600 MV. Extrapolating the linear declines seen in all three parameters since 1985, yields predictions that the grand maximum will end in the years 2013, 2014, or 2027 using V{sub SW}, F{sub S}, or B, respectively. These estimates are consistent with predictions based on the probability distribution of the durations of past grand solar maxima seen in cosmogenic isotope data. The data contradict any suggestions of a floor to the open solar flux: we show that the solar minimum open solar flux, kinematically corrected to allow for the excess flux effect, has halved over the past two solar cycles.

Lockwood, M.; Rouillard, A. P. [Space Environment Physics, School of Physics and Astronomy, Southampton University, Highfield, Southampton SO17 1BJ (United Kingdom); Finch, I. D. [Space Science and Technology Department, Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire OX11 0QX (United Kingdom)], E-mail: mike.lockwood@stfc.ac.uk

2009-08-01

484

Natural suppression of proton decay induced by d = 5 operators in supersymmetric grand unified theories  

Microsoft Academic Search

The proton decay in supersymmetric (SUSY) Grand Unified Theories (GUTs), where the special mechanism provides the natural suppression of the dimension 5 ($d=5$) operators, was studied. Due to this mechanism, $d=5$ operator induced proton decay takes place only through the mixing of light generation fermions with those from third generation and crucially depends on the structure of fermion mass matrices.

I. Gogoladze; A. Kobakhidze

1997-01-01

485

Confronting the Conventional Ideas of Grand Unification with Fermion Masses, Neutrino Oscillations and Proton Decay  

Microsoft Academic Search

It is noted that one is now in possession of a set of facts, which may be viewed as the matching pieces of a puzzle; in that all of them can be resolved by just one idea--that is grand unification. These include (i) the observed family-structure, (ii) quantization of electric charge, (iii) the meeting of the three gauge couplings, (iv)

Jogesh C. Pati; Jogesh C

2002-01-01

486

Grand Coulee Dam Wildlife Mitigation Program : Pygmy Rabbit Programmatic Management Plan, Douglas County, Washington.  

SciTech Connect

The Northwest Power Planning Council and the Bonneville Power Administration approved the pygmy rabbit project as partial mitigation for impacts caused by the construction of Grand Coulee Dam. The focus of this project is the protection and enhancement of shrub-steppe/pygmy rabbit habitat in northeastern Washington.

Ashley, Paul

1992-06-01

487

(Theory of elementary particles studies in weak interaction and grand unification and studies in accelerator design)  

SciTech Connect

This report discusses research in high energy physics on the following topics: rare b decays; flavor changing top decays;neutrino physics; standard model; cp violation; heavy ion collisions; electron-positron interactions; electron-hadron interactions; hadron-hadron interactions; deep inelastic scattering; and grand unified models. (LSP)

Not Available

1991-01-01

488

Control of Dwarf Mistletoe in a Heavily Used Ponderosa Pine Recreation Forest: Grand Canyon, Arizona.  

National Technical Information Service (NTIS)

Southwestern dwarf mistletoe has been a problem in ponderosa pine on the South Rim of Grand Canyon for many decades. The National Park Service program to control the parasite, begun in 1949, was the first large-scale attempt to control dwarf mistletoe in ...

P. C. Lightle F. G. Hawksworth

1978-01-01

489

Mantle Seismic Structure beneath the Colorado Plateau, Rio Grande Rift and Great Plains from Seismic Tomography  

Microsoft Academic Search

We have inverted P and S wave teleseismic delay times recorded by the LA RISTRA (Colorado PLateau, Rio Grande RIft, Great Plaines Seismic TRAnsect) array. The RISTRA array consisted of 57 broadband seismic stations most of which were deployed in a line extending 950 km from Lake Powell Utah to Pecos Texas. P, PKP, S, and SKS travel time delays

W. Gao; S. P. Grand; J. Ni; R. Aster; D. Wilson; J. Schlue; S. Baldridge; S. Semken; E. Matzel

2001-01-01

490

Bill and Monica: Memory, emotion and normativity in Clinton's Grand Jury testimony  

Microsoft Academic Search

We examine links between factual recall, emotion and constructions of normativity in narrative accounts, using as an empirical case President Clinton' s descriptions of his relationship with Monica Lewinsky. We analyse those accounts in the sequences of talk in which they occurred, under Grand Jury cross-examination. Clinton' s accounts of Lewinsky were part of how he attended to issues alive

Abigail Locke; Derek Edwards

2003-01-01

491

Analysis of Core Damage Frequency: Grand Gulf, Unit 1. Internal Events Appendices.  

National Technical Information Service (NTIS)

The document contains the appendices for the accident sequence analysis of internally initiated events for the Grand Gulf Unit 1, Nuclear Power Plant. This is one of the five plant analyses conducted as part of the NUREG-1150 effort. The work performed an...

M. T. Drouin J. L. LaChance B. J. Shapiro S. Miller T. A. Wheeler

1989-01-01

492

Analysis of core damage frequency from internal events, Grand Gulf, Unit 1: Appendices  

SciTech Connect

This document contains the accident sequence analyses for Grand Gulf Unit 1, one of the reference plants being examined as part of the NUREG-1150 effort by the Nuclear Regulatory Commission. NUREG-1150 will document the risk of a selected group of nuclear power plants. As part of that work, this report contains the overall core damage frequency estimate for Grand Gulf Unit 1 and the accompanying plant damage state frequencies. Sensitivity and uncertainty analyses provide additional insights regarding the dominant contributors to the Grand Gulf core damage frequency estimate. The mean core damage frequency at Grand Gulf was calculated to be 2.9E-5. Station blackout type accidents (loss of all AC power accidents) were found to dominate the overall results. Anticipated transient without scram accidents were also found to be contributors. The numerical results are largely driven by common mode failure probability estimates and, to some extent, human error. Because of significant data uncertainties in these two areas, it is recommended that the results of the uncertainty and sensitivity analyses be considered before any future actions are taken based on this analysis. In particular, the single most dominant scenario may require a more detailed data search and analysis before actions are implemented on the basis of this scenario.

Drouin, M.T.; LaChance, J.L.; Shapiro, B.J.; Harper, F.T.; Wheeler, T.A.

1987-04-01

493

Analysis of core damage frequency: Grand Gulf, Unit 1 internal events appendices  

Microsoft Academic Search

This document contains the appendices for the accident sequence analysis of internally initiated events for the Grand Gulf Unit 1, Nuclear Power Plant. This is one of the five plant analyses conducted as part of the NUREG-1150 effort for the Nuclear Regulatory Commission. The work performed and described here is an extensive reanalysis of that published in April 1987 as

M. T. Drouin; J. L. LaChance; B. J. Shapiro; S. Miller; T. A. Wheeler

1989-01-01

494

Analysis of core damage frequency from internal events, Grand Gulf, Unit 1: Main report  

SciTech Connect

This document contains the accident sequence analyses for Grand Gulf Unit 1, one of the reference plants being examined as part of the NUREG-1150 effort by the Nuclear Regulatory Commission. NUREG-1150 will document the risk of a selected group of nuclear power plants. As part of that work, this report contains the overall core damage frequency estimate for Grand Gulf Unit 1 and the accompanying plant damage state frequencies. Sensitivity and uncertainty analyses provide additional insights regarding the dominant contributors to the Grand Gulf core damage frequency estimate. The mean core damage frequency at Grand Gulf was calculated to be 2.9E-5. Station blackout type accidents (i.e., loss of all ac power accidents) were found to dominate the overall results. Anticipated transient without scram accidents were also found to be contributors. The numerical results are largely driven by common mode failure probability estimates and, to some extent, human error. Because of significant data uncertainties in these two areas, it is recommended that the results of the uncertainty and sensitivity analyses be considered before any future actions are taken based on this analysis. In particular, the single most dominant scenario may require a more detailed data search and analysis before actions are implemented on the basis of the scenario.

Drouin, M.T.; LaChance, J.L.; Shapiro, B.J.; Harper, F.T.; Wheeler, T.A.

1987-04-01

495

Early Forecasts of Snowmelt Runoff using SNOTEL Data in the Upper Rio Grande Basin  

Microsoft Academic Search

In order to improve early forecasts of water availability from the Upper Rio Grande basin in Colorado, we studied the accuracy of one- to six-month advance forecasts of snowmelt runoff based upon SNOTEL data. Equations were developed to forecast seasonal runoff volume, peak daily flow rate, and date of peak flow at the Del Norte, CO streamflow gage using snowpack

D. R. Dewalle; J. A. Eismeier; A. Rango

2002-01-01

496

Evaluating Riparian and Agricultural Systems as Sinks for Surface Water Nutrients in the Upper Rio Grande  

Microsoft Academic Search

We have performed five years of biannual synoptic sampling along a 1200km reach of the Rio Grande to develop relationships between discharge, land use, and major water quality parameters. Both total dissolved nitrogen (TDN) and dissolved organic carbon (DOC) concentrations gradually increase with distance downstream, however for TDN and phosphate this trend is punctuated by large, localized inputs primarily from

G. P. Oelsner; P. D. Brooks; J. F. Hogan; F. M. Phillips; J. E. Villinski

2005-01-01

497

The Role of Climatic Variability on Rio Grande Salinity and Water Balances  

Microsoft Academic Search

The upper Rio Grande\\/ Rio Bravo extends ~1,200 km between its headwaters in southern Colorado (USA) and the USA\\/Mexico border region. Like many arid region rivers, it exhibits reductions in streamflow and degrading water quality with distance downstream as a result of decreasing inflows, increasing evapotranspiration, and the addition of natural and anthropogenic solutes. From 2000 to 2007 we conducted

J. F. Hogan; F. M. Phillips

2008-01-01

498

Economic Implications of Biological Control of Arundo donax in the Texas Rio Grande Basin.  

National Technical Information Service (NTIS)

Arundo donax, or giant reed, is a large, bamboo-like plant that is native to Spain and has invaded several thousand acres of the Rio Grande riparian zone in Texas and Mexico. The plant grows to over 26 feet tall, and consumes large quantities of water, es...

A. W. Sturdivant B. L. Harris C. Yang D. A. McCorkle E. K. Seawright J. A. Goolsby M. E. Rister R. D. Lacewell

2009-01-01

499

Mercury evolution (1978–1988) in fishes of the La Grande hydroelectric complex, Quebec, Canada  

Microsoft Academic Search

From 1978 to 1988, the evolution of the Hg content of fish has been monitored in the areas affected by the La Grande hydroelectric\\u000a complex. Four fish species were considered: two non piscivorous, lake whitefish (Coregonus clupeaformis) and longnose sucker (Catostomus catostomus), and two piscivorous, northern pike (Esox lucius) and walleye (Stizostedion vitreum). The evolution of Hg concentrations in time

R. Verdon; D. Brouard; C. Demers; R. Lalumiere; M. Laperle; R. Schetagne

1991-01-01

500

Streamwater Quality at Selected Sites in the Fraser River Basin, Grand County, Colorado, Water Years 1991-2000.  

National Technical Information Service (NTIS)

To determine the effect of population growth on streamwater quality in the Fraser River Basin, the U.S. Geological Survey did a study in cooperation with the Grand County Commissioners and the East Grand County Water Quality Board. During water years 1991...

J. B. Bails

2003-01-01