Sample records for las tecnicas nucleares

  1. UNIVERSIDAD TECNICA FEDERICO SANTA MARIA DEPARTAMENTO DE ELECTRICIDAD

    E-print Network

    Catholic University of Chile (Universidad Católica de Chile)

    UNIVERSIDAD TECNICA FEDERICO SANTA MARIA DEPARTAMENTO DE ELECTRICIDAD PROGRAMACION DE LA GENERACION DEPARTAMENTO DE ELECTRICIDAD PROGRAMACION DE LA GENERACION DE CORTO PLAZO EN SISTEMAS HIDROTERMICOS USANDO

  2. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    da Silva, Alberto Rodrigues

    UNIVERSIDADE T´ECNICA DE LISBOA INSTITUTO SUPERIOR T´ECNICO eCT - Biblioteca de Com´ercio Electr´onico No contexto das ´areas de com´ercio electr´onico e sistemas de gest~ao de conte´udo (CMS), analisam-se v´arias extens~oes de com´ercio electr´onico para CMS, com o objectivo de identi- ficar as suas caracter

  3. Las1 Is an Essential Nuclear Protein Involved in Cell Morphogenesis and Cell Surface Growth

    PubMed Central

    Doseff, A. I.; Arndt, K. T.

    1995-01-01

    Saccharomyces cerevisiae mutations that cause a requirement for SSD1-v for viability were isolated, yielding one new gene, LAS1, and three previously identified genes, SIT4, BCK1/SLK1, and SMP3. Three of these genes, LAS1, SIT4, and BCK1/SLK1, encode proteins that have roles in bud formation or morphogenesis. LAS1 is essential and loss of LAS1 function causes the cells to arrest as 80% unbudded cells and 20% large budded cells that accumulate many vesicles at the mother-daughter neck. Overexpression of LAS1 results in extra cell surface projections in the mother cell, alterations in actin and SPA2 localization, and the accumulation of electron-dense structures along the periphery of both the mother cell and the bud. The nuclear localization of LAS1 suggests a role of LAS1 for regulating bud formation and morphogenesis via the expression of components that function directly in these processes. PMID:8582632

  4. Faculty Activity Analysis in the Universidad Tecnica Del Estado Campuses.

    ERIC Educational Resources Information Center

    Karadima, Oscar

    An analysis of academic activities of college faculty at the eight campuses of Chile's Universidad Tecnica del Estado was conducted. Activities were grouped into seven categories: direct teaching, indirect teaching, research, community services, faculty development, academic administration, and other activities. Following the narrative…

  5. Redes inalambricas y robotica movil: tecnicas geograficas

    Microsoft Academic Search

    Alejandro R. Mosteo Chagoyen; Jose L. Villarroel Salcedo

    En los ´ ultimos anos ha surgido un creciente interes por los equipos multi-robot y las comunicaciones inalambricas. Varios robots pueden realizar un con- junto de tareas de forma mas eficiente que un solo robot, ademas de ofrecer nuevas posibilidades de uso mas alla de las capacidades de un robot en soli- tario. Es frecuentemente necesario o conveniente que los

  6. Strategic Planning for Institutions of Higher Education: A Content Analysis for the Universidad Tecnica del Estado Planning System.

    ERIC Educational Resources Information Center

    Karadima, Oscar

    Ten-year development plans of each of the eight campuses of the Universidad de Santiago de Chile, formerly called Universidad Tecnica del Estado, are evaluated, using content analysis. In addition to narrative descriptions, diagrams illustrate the features of each plan, which covers the period 1983-1993. Topics covered by the plans were grouped…

  7. Departamento de Matematica, Universidad Tecnica Federico Santa Maria

    E-print Network

    Markina, Irina

    diferenciable excepto en el origen) en una funci´on g(r). Comprobar las siguientes f´ormulas: f(r cos , r sin ecuaci´on de Laplace en el disco de radio 1, con valores en la frontera f() = 10 cos2 . 9) (Ecuaci

  8. 76 FR 3678 - Board Meeting: February 16, 2011-Las Vegas, NV, the U.S. Nuclear Waste Technical Review Board...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-20

    ...Nuclear Fuel and High-Level Radioactive Waste Pursuant to its authority under...nuclear fuel and high-level radioactive waste. The Board will consider technical...spent fuel and high-level radioactive waste over the last two...

  9. ANALISIS DE FATIGA DE LOS COMPONENTES DE UNA CENTRAL NUCLEAR POR EL METODO DE LAS FUNCIONES DE INFLUENCIA

    Microsoft Academic Search

    R. Cicero; I. Gorrochategui; J. A. Alvarez

    In nuclear power plants, the fatigue in vessels and their associated components is caused by transients that occur at normal operating temperatures. Fatigue analysis validity must be continuously reviewed during the design period of the components. Fatigue accumulation due to in plant events produces the degradation of the vessel components. This is the cause that everyday is more under consideration

  10. Annual Conference on Nuclear and Space Radiation Effects, 19th, Las Vegas, NV, July 20-22, 1982, Proceedings

    NASA Technical Reports Server (NTRS)

    Long, D. M.

    1982-01-01

    The results of research concerning the effects of nuclear and space radiation are presented. Topics discussed include the basic mechanisms of nuclear and space radiation effects, radiation effects in devices, and radiation effects in microcircuits, including studies of radiation-induced paramagnetic defects in MOS structures, silicon solar cell damage from electrical overstress, radiation-induced charge dynamics in dielectrics, and the enhanced radiation effects on submicron narrow-channel NMOS. Also examined are topics in SGEMP/IEMP phenomena, hardness assurance and testing, energy deposition, desometry, and radiation transport, and single event phenomena. Among others, studies are presented concerning the limits to hardening electronic boxes to IEMP coupling, transient radiation screening of silicon devices using backside laser irradiation, the damage equivalence of electrons, protons, and gamma rays in MOS devices, and the single event upset sensitivity of low power Schottky devices.

  11. Las Vegas

    NASA Technical Reports Server (NTRS)

    2001-01-01

    This image of Las Vegas, NV was acquired on August, 2000 and covers an area 42 km (25 miles) wide and 30 km (18 miles) long. The image displays three bands of the reflected visible and infrared wavelength region, with a spatial resolution of 15 m. McCarran International Airport to the south and Nellis Air Force Base to the NE are the two major airports visible. Golf courses appear as bright red areas of worms. The first settlement in Las Vegas (which is Spanish for The Meadows) was recorded back in the early 1850s when the Mormon church, headed by Brigham Young, sent a mission of 30 men to construct a fort and teach agriculture to the Indians. Las Vegas became a city in 1905 when the railroad announced this city was to be a major division point. Prior to legalized gambling in 1931, Las Vegas was developing as an agricultural area. Las Vegas' fame as a resort area became prominent after World War II. The image is located at 36.1 degrees north latitude and 115.1 degrees west longitude.

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

  12. Nuclear

    NSDL National Science Digital Library

    Iowa Public Television. Explore More Project

    2004-01-01

    What part does nuclear energy play in satisfying energy demands? This informational piece, part of a series about the future of energy, introduces students to the uranium atom as an energy source. Here students read about the history of nuclear energy, how energy is derived from uranium, and benefits of nuclear energy. Information is also provided about limitations, particularly disposal problems and radioactivity, and geographical considerations of nuclear power in the United States. Thought-provoking questions afford students chances to reflect on what they've read about the uses of nuclear power. Articles and information on new nuclear plant design and nuclear accidents are available from a sidebar. Five energy-related PBS NewsHour links are provided. A web link to the U.S. Nuclear Regulatory Commission is included. Copyright 2005 Eisenhower National Clearinghouse

  13. EVALUACION DE TECNICAS BASADAS EN CONOCIMIENTO PARA EL DISEO DE CONTROLES DE EXCITACION EN

    E-print Network

    Catholic University of Chile (Universidad Católica de Chile)

    que han alcanzado los sistemas eléctricos de potencia, debido al aumento de interconexiones, al uso de (Anderson y Fouad, 1993; Kundur, 1994). En las últimas dos décadas se ha desarrollado un número considerable utilizando las teorías de control óptimo en H y control proyectivo subóptimo (Morales, 1993). En todos los

  14. ESCUELA TECNICA SUPERIOR DE INGENIEROS DE TELECOMUNICACI ON PROYECTO FIN DE CARRERA

    E-print Network

    Giménez, Domingo

    tecnolog´ia microstrip utilizados en sat´elites espaciales. Las altos costes computacionales de los m´etodos sistemas de ecuaciones que en ´el aparecen. De es- ta forma el tiempo de ejecuci´on se reduce de forma

  15. Aplicacion de PCA y tecnicas bayesianas a la clasificacion de pixeles basada en color

    E-print Network

    Granada, Universidad de

    patrones de las clases de un clasificador bayesiano. El m´etodo se ilustra a trav´es de varios experimentos´agenes y tiene m´ultiples aplicaciones en campos como la detecci´on de defectos de fabricaci´on en procesos la secci´on V se comentar´an varios experimentos realizados y finalmente en la secci´on VI se ver

  16. Estudiar las redes sociales: Aportes y perspectivas para las

    E-print Network

    Paris-Sud XI, Université de

    Estudiar las redes sociales: Aportes y perspectivas para las ciencias sociales Claire Bidart LEST muchas razones en interesarse en las redes socia- les. Estos sistemas relacionales construyen lazos entre estructuracio- nes, sus dinámicas. Transversales a los grupos y a las estructuras sociales glo- bales, las redes

  17. Las Vegas: An Unconventional History

    NSDL National Science Digital Library

    2005-01-01

    As part of the PBS series American Experience, this well-designed siteexplores the history and idiosyncrasies of Las Vegas. The film, andaccompanying book, which the web site is based on will both be availablethis fall (the film airs in November on PBS), and the site certainlywhets viewers appetites for both. A nice range of information iscovered on the site which includes everything from information aboutNevada's nuclear testing in the fifties, to Rat Pack reminiscences and ofcourse, wedding photos. If you'd like to share your own Vegas weddingtale there is an interactive portion of the site dedicated to the topic.Packed with time lines, a teacher's guide, maps and much more this site(and film and book by the same name) are worthy of attention.

  18. Las Posadas on Television

    E-print Network

    1976-04-01

    of the piece takes the work far beyond the exploratory scenes which toured as a germinal work-in-progress in 1975. Diablos and calaveras in the popular tradition of El Teatro inhabit this piece, but there are also earthy portrayals of men, women, workers... the Midwest and the East from March 15 through May. Las Posadas on Television The Center for the Hispanic Performing Arts at the University of Colorado (Boulder) sponsored a special television production of the traditional Christmas pageant, Las Posadas...

  19. Las Vegas Strip History

    NSDL National Science Digital Library

    DeMatteo, Deanna.

    Created by amateur cultural historian Deanna DeMatteo, this site offers "the most detailed history of the Las Vegas Strip on the Internet today," showing in words and graphics the evolution of the properties on the Strip from its beginning to the present. Drawing on materials provided by publications, professional Las Vegas historians, and the Nevada State Museum and Historical Society, DeMatteo offers a detailed, noncommercial history with plenty of photographs (many archival) of the strip from the first night club in 1930 named Pair O Dice to the first true casino hotel, El Rancho with 63 rooms in 1941, to Hilton's giant Paris Las Vegas opening earlier this Fall with 2,914 rooms. There is also a special topics section, covering people significant in the strip's development, such as Warren "Doc" Bayley and Howard Hughes. Launched in August, the Website is continually updated with new material. Note: to reach table of contents, click on the photograph at end of the homepage.

  20. History: Las Vegas

    NSDL National Science Digital Library

    Las Vegas (or "The Meadows" in Spanish) is a curious place, and it is not much of a stretch to say that it was transformed from a sleepy railroad town into a ring-a-ding swinging town in just a few decades during the 20th century. The Las Vegas Sun has gone above and beyond the call of duty by crafting a site that presents a multimedia-rich experience that narrates the history of this rather unique American city. Visitors should start their journey here by watching one or all eleven parts of their "Boomtown" video on the history of the town. Then visitors may want to take a look at the interactive map of the "Strip", which tells the fortunes of casinos and other buildings, past, present, and future, which have graced this notable region of mega-structures amidst the desert. After that, visitors should look at the "12 Voices from the Past" area. Voices like casino owner Benny Binion and former Nevada governor Mike O'Callaghan are featured here, and it's a great trip back through the city's varied past.

  1. The Las Campanas Redshift Survey

    Microsoft Academic Search

    Huan Lin; Stephen D. Landy; Augustus Oemler; Douglas L. Tucker; Robert P. Kirshner; Paul L. Schechter

    1996-01-01

    The Las Campanas Redshift Survey has sampled 26400 galaxies, with an average redshift z = 0.1, in six 1.5 deg × 80 deg slices in the North and South galactic caps. The combination of the survey's large sample size, volume, and depth argues that the Las Campanas Survey may currently represent the best chance for a fair sample of the

  2. EMPACT: THE LAS VEGAS INTERAGENCY PILOT PROGRAM

    EPA Science Inventory

    ENPACT: The Las Vegas Interagency Pilot Project The Las Vegas Interagency Pilot Project of the EMPACT program has involved eleven efforts. These efforts are described in brief on the poster presentation. They include: Las Vegas Environmental Monitoring Inventory, the Qual...

  3. Nuclear Weapon

    MedlinePLUS

    http://emergency.cdc.gov/radiation What is a nuclear weapon? A nuclear weapon is a device that uses ... radioactive and can contaminate anything it lands on. NUCLEAR WEAPON What are the main dangers of a nuclear ...

  4. Seismic Data for Evaluation of Ground Motion Hazards in Las Vegas in Support of Test Site Readiness Ground Motion

    SciTech Connect

    Rodgers, A

    2008-01-16

    In this report we describe the data sets used to evaluate ground motion hazards in Las Vegas from nuclear tests at the Nevada Test Site. This analysis is presented in Rodgers et al. (2005, 2006) and includes 13 nuclear explosions recorded at the John Blume and Associates network, the Little Skull Mountain earthquake and a temporary deployment of broadband station in Las Vegas. The data are available in SAC format on CD-ROM as an appendix to this report.

  5. todasuvida: Las personas con diabetes son ms

    E-print Network

    diabetes Controlesu todasuvida: Las personas con diabetes son más propensas a padecer de enfermedades del corazón que quienes no tienen diabetes. Boletín 631 D Las personas con diabetes tienen mayor- res relacionados con la diabetes, como derrame cerebral, mala circulación en las piernas y pies e

  6. Cadenas productivas y productividad de las Mipymes

    Microsoft Academic Search

    Danielle Tomta; Cèsaire Chiatchoua

    2010-01-01

    Resumen El concepto de las cadenas productivas ha tomado en los últimos años un peso importante para el desarrollo de las empresas, tanto en los países desarrollados como en desarrollo. Sin embargo, en los países en desarrollo, los principales agentes económicos que son las empresas no han sabido convertir este elemento en una ventaja competitiva. Peor aún en México donde

  7. Nuclear Medicine.

    ERIC Educational Resources Information Center

    Badawi, Ramsey D.

    2001-01-01

    Describes the use of nuclear medicine techniques in diagnosis and therapy. Describes instrumentation in diagnostic nuclear medicine and predicts future trends in nuclear medicine imaging technology. (Author/MM)

  8. Nuclear Forces

    NSDL National Science Digital Library

    Christopher Griffith

    This collection explores the state of the world's current nuclear arsenals, including those of the five acknowledged nuclear powers. India and Pakistan have not formally placed their nuclear arsenal on a delivery system.

  9. Nuclear Engineering Nuclear Criticality Safety

    E-print Network

    Kemner, Ken

    , and neutron spectra. The NE nuclear criticality safety (NCS) capabilities are based on a staff with decadesNuclear Engineering Nuclear Criticality Safety The Nuclear Engineering Division (NE) of Argonne National Laboratory is experienced in performing criticality safety and shielding evaluations for nuclear

  10. La logística como factor de competitividad de las Pymes en las Américas

    Microsoft Academic Search

    Carlos Kirby; Nicolau Brosa

    2011-01-01

    En América Latina y el Caribe, a pesar de las mejoras experimentadas a nivel logístico en los últimos años, persisten algunos problemas estructurales que suponen un freno a las exportaciones de las empresas de la región, afectando de manera particular a las pymes. En este documento se hace hincapié en cuáles son los principales desafíos que se deben afrontar en

  11. Nuclear weapons and nuclear war

    SciTech Connect

    Cassel, C.; McCally, M.; Abraham, H.

    1984-01-01

    This book examines the potential radiation hazards and environmental impacts of nuclear weapons. Topics considered include medical responsibility and thermonuclear war, the threat of nuclear war, nuclear weaponry, biological effects, radiation injury, decontamination, long-term effects, ecological effects, psychological aspects, the economic implications of nuclear weapons and war, ethics, civil defense, arms control, nuclear winter, and long-term biological consequences of nuclear war.

  12. Nuclear Facilities

    NSDL National Science Digital Library

    Christopher Griffith

    In order to produce nuclear weapons, each country must have facilities to produce and refine the nuclear materials, conduct research on weapon design, and store the completed weapons. The interactives in this collection allow you to explore the nuclear facilities of the nuclear powers (both declared and undeclared).

  13. Usos de las tecnologías de la información y de la comunicación en las instituciones de enseñanza superior de Europa: De las brechas digitales a las trayectorias digitales

    Microsoft Academic Search

    Adel Ben Youssef; Ludovic Ragni

    2008-01-01

    digital educativa y tratarlos en el contexto de la Unión Europea y el segundo es desarrollar una hipótesis alternativa para las trayectorias digitales educativas en lugar de fijarse en las brechas educativas.\\u000aLa primera sección define los tres niveles de brechas digitales. El primer nivel de brecha digital educativa se refiere a las diferencias en cuanto a equipamiento de TIC.

  14. Esquema hilemórfico virtual “El caso de las TIC´s y las subjetividades mediáticas en las instituciones educativas”

    Microsoft Academic Search

    Lya Adlih Oros Méndez

    2011-01-01

    La cuestión sustantiva es cómo capacitar y para qué, de modo de no caer en las redes tradicionales pero tampoco de perder el norte y pasar a incorporar bulímicamente conocimientos que nos hagan otra vez caer en la indigestión. La transmisión de información, plantea a los procesos de formación actuales el desafío de construir signos y símbolos cuando las señales

  15. Las Vegas bets on a sure winner

    Microsoft Academic Search

    J. B. Gilbert; G. L. Culp; J. E. Salo

    1980-01-01

    To protect the quality of Lake Mead and Las Vegas Wash in Nevada, six water treatment alternatives and three wastewater treatment plants in the Las Vegas Valley were analyzed. The treatment plants and the treatment alternatives are described. Studies on cost-effectiveness, functional limitations, environmental impact, and energy-efficiency of the treatment alternatives are discussed. The low lime treatment mode should be

  16. Incendio latente bajo las Tablas de Daimiel 

    E-print Network

    Rein, Guillermo

    El incendio de las turberas secas del Parque Nacional de Las Tablas de Daimiel que se detectó en el verano de 2009 llevó a la sociedad española a conocer de primera mano y de golpe la amenaza que representan los incendios latentes. La combustión...

  17. University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas

    E-print Network

    Walker, Lawrence R.

    University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas Center organizations. Two Reports on Monthly Nevada Gaming Revenues The Center released the Nevada Gaming Statistics Libraries University of Nevada, Las Vegas In addition, the Nevada Gaming Statistics: The Last Six Months

  18. University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas

    E-print Network

    Hemmers, Oliver

    University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas Center has added data for Delaware and Kansas. Two Reports on Monthly Nevada Gaming Revenues The Center released the Nevada Gaming Statistics: October Comparison, which examines revenue trends for Statewide, Las

  19. Potencial de las comarcas aragonesas para la localización industrial. Implicaciones para las autoridades públicas

    Microsoft Academic Search

    Lucía Isabel García Cebrián; Antonio Muñoz Porcar

    2010-01-01

    RESUMEN Para que las empresas puedan desarrollar favorablemente sus actividades manufactureras, logísticas o de cualquier otra índole, es necesario que el espacio físico en el que se van a desarrollar disponga, de la infraestructura básica que las organizaciones demandan y que afectan no sólo al suelo industrial sino a las instalaciones que los propios polígonos les facilitan. El objetivo de

  20. Nuclear Scans

    MedlinePLUS

    Nuclear scans use radioactive substances to see structures and functions inside your body. They use a special ... images. Most scans take 20 to 45 minutes. Nuclear scans can help doctors diagnose many conditions, including ...

  1. Nuclear ventriculography

    MedlinePLUS

    ... Radionuclide ventriculography (RNV); Multiple gate acquisition scan (MUGA); Nuclear cardiology ... Nuclear imaging tests carry a very low risk. Exposure to the radioisotope delivers a small amount of radiation. This ...

  2. Nuclear Winter.

    ERIC Educational Resources Information Center

    Ehrlich, Anne

    1984-01-01

    "Nuclear Winter" was recently coined to describe the climatic and biological effects of a nuclear war. These effects are discussed based on models, simulations, scenarios, and projections. Effects on human populations are also considered. (JN)

  3. Nuclear Receptors

    NSDL National Science Digital Library

    Reshma Taneja (Mount Sinai School of Medicine; Department of Molecular Cell and Developmental Biology REV)

    2005-05-31

    This Teaching Resource provides lecture notes and slides for a class covering nuclear receptors and is part of the course "Cell Signaling Systems: A Course for Graduate Students." The lecture begins with a discussion of the structure of nuclear hormone receptors and then proceeds to describe mechanisms of transcriptional regulation, modulation of nuclear receptor activity by phosphorylation, and the role of nuclear receptors in cancer.

  4. Nuclear Fuels.

    ERIC Educational Resources Information Center

    Nash, J. Thomas

    1983-01-01

    Trends in and factors related to the nuclear industry and nuclear fuel production are discussed. Topics addressed include nuclear reactors, survival of the U.S. uranium industry, production costs, budget cuts by the Department of Energy and U.S. Geological survey for resource studies, mining, and research/development activities. (JN)

  5. Nuclear weapons, nuclear effects, nuclear war

    SciTech Connect

    Bing, G.F.

    1991-08-20

    This paper provides a brief and mostly non-technical description of the militarily important features of nuclear weapons, of the physical phenomena associated with individual explosions, and of the expected or possible results of the use of many weapons in a nuclear war. Most emphasis is on the effects of so-called ``strategic exchanges.``

  6. Nuclear weapons, nuclear effects, nuclear war

    Microsoft Academic Search

    1991-01-01

    This paper provides a brief and mostly non-technical description of the militarily important features of nuclear weapons, of the physical phenomena associated with individual explosions, and of the expected or possible results of the use of many weapons in a nuclear war. Most emphasis is on the effects of so-called ``strategic exchanges.``

  7. Atmospheric Radioxenon Measurements in North Las Vegas, NV

    SciTech Connect

    Milbrath, Brian D.; Cooper, Matthew W.; Lidey, Lance S.; Bowyer, Ted W.; Hayes, James C.; McIntyre, Justin I.; Karr, L.; Shafer, D.; Tappen, J.

    2006-07-31

    PNNL deployed the ARSA radioxenon measurement system in North Las Vegas for two weeks in February and March 2006 for the purpose of measuring the radioxenon background at a level of sensitivity much higher than previously done in the vicinity of the NTS. The measurements establish what might be expected if future measurements are taken at NTS itself. The measurements are also relevant to test site readiness. A second detector, the PEMS, built and operated by DRI, was deployed in conjunction with the ARSA and contained a PIC, aerosol collection filters, and meteorological sensors. Originally, measurements were also to be performed at Mercury, NV on the NTS, but these were canceled due to initial equipment problems with the ARSA detector. Some of the radioxenon measurements detected 133Xe at levels up to 3 mBq/m3. This concentration of radioxenon is consistent with the observation of low levels of radioxenon emanating from distance nuclear reactors. Previous measurements in areas of high nuclear reactor concentration have shown similar results, but the western US, in general, does not have many nuclear reactors. Measurements of the wind direction indicate that the air carrying the radioxenon came from south of the detector and not from the NTS.

  8. Comprehensive Analysis of Broadband Seismic Data in Las Vegas Valley

    NASA Astrophysics Data System (ADS)

    Tkalcic, H.; Rodgers, A.; Snelson, C.; McEwan, D.

    2003-12-01

    The city of Las Vegas is one of the fastest growing metropolitan areas in the world. Its urban area is located in a relatively broad sedimentary basin in the Basin and Range Province. Acknowledging that Las Vegas of 2003 is drastically different from Las Vegas of a decade ago, our objectives are to understand and predict ground motions and evaluate the effects of possible future earthquakes and nuclear tests at Nevada Test Site (NTS) on buildings in Las Vegas. A model of the basin depth was derived from gravity data in an independent study, while a model of compressional velocity structure of the basin was derived from seismic refraction studies. We are using strong motion accelerometers regional data, as well as newly acquired broadband teleseismic data to evaluate these models, and predict ground motions at the surface. Delay times of about a dozen analyzed teleseismic P-waves show variation of up to 0.5 seconds across relatively short distances (15 km or less), providing some valuable information on basin shape and thickness. Teleseismic P-waves have favorable signal-to-noise for low frequencies (0.1 to 1.0 Hz). This provides complementary site response measurements to those obtained from regional earthquakes and explosions. Our results indicate a clear difference in site response between hard-rock and basin stations, with amplification reaching factor 5 for the basin stations. The measured P and S wave energies for the recorded data also corelate well with the existing basin depth model, providing additional constraint in modeling the basin shape and structure. We use time domain deconvolution receiver functions to constrain the position of basin boundaries and main crustal discontinuities. Finally, we simulate low frequency (f < 1 Hz) theoretical ground motion in Las Vegas Valley by an elastic finite difference code. Preliminary results show that we can predict relative amplification, as well as some of the complexity in the waveforms, even without invoking complex (and computationaly expensive) three-dimensional structural models. This work is in progress.

  9. Premios Literarios Casa de las Américas, 1980

    E-print Network

    1980-04-01

    86 LATIN AMERICAN THEATRE REVIEW Premios Literarios Casa de las Américas, 1980 Los cuarenta y cinco intelectuales de veintitrés países integrantes del Jurado del Premio Literario Casa de las Américas 1980, transcurridas varias semanas de... intensas lecturas y deliberaciones, seleccionaron los doce libros para la Co lección Premio, entre los 632 originales inéditos, recibidos este año desde treinta y cuatro países, en los diversos géneros y categorías que se convocan. Los jurados, además de...

  10. Nuclear Halos

    SciTech Connect

    Vogt, Erich [TRIUMF, 4004 Wesbrook Mall, Vancouver, BC, V6T 2A3 (Canada)

    2010-07-27

    We show that extreme nuclear halos are caused only by pairs of s-wave neutrons (or single s-wave neutrons) and that such states occur much more frequently in the periodic table than previously believed. Besides lingering long near zero neutron separation energy such extreme halos have very remarkable properties: they can contribute significantly to the nuclear density at more than twice the normal nuclear radius and their spreading width can be very narrow. The properties of these states are primarily determined by the ''thickness'' of the nuclear surface in the mean-free nuclear potential and thus their importance increases greatly as we approach the neutron drip line. We discuss what such extreme halos are, where they occur, what their properties are and some of their impact on nuclear observations.

  11. Nuclear APC

    PubMed Central

    Neufeld, Kristi L.

    2011-01-01

    Mutational inactivation of the tumor suppressor gene APC (Adenomatous polyposis coli) is thought to be an initiating step in the progression of the vast majority of colorectal cancers. Attempts to understand APC function have revealed more than a dozen binding partners as well as several subcellular localizations including at cell-cell junctions, associated with microtubules at the leading edge of migrating cells, at the apical membrane, in the cytoplasm and in the nucleus. The present chapter focuses on APC localization and functions in the nucleus. APC contains two classical nuclear localization signals, with a third domain that can enhance nuclear import. Along with two sets of nuclear export signals, the nuclear localization signals enable the large APC protein to shuttle between the nucleus and cytoplasm. Nuclear APC can oppose ?-catenin-mediated transcription. This down-regulation of nuclear ?-catenin activity by APC most likely involves nuclear sequestration of ?-catenin from the transcription complex as well as interaction of APC with transcription corepressor CtBP. Additional nuclear binding partners for APC include transcription factor activator protein AP-2?, nuclear export factor Crm1, protein tyrosine phosphatase PTP-BL and perhaps DNA itself. Interaction of APC with polymerase ? and PCNA, suggests a role for APC in DNA repair. The observation that increases in the cytoplasmic distribution of APC correlate with colon cancer progression suggests that disruption of these nuclear functions of APC plays an important role in cancer progression. APC prevalence in the cytoplasm of quiescent cells points to a potential function for nuclear APC in control of cell proliferation. Clear definition of APC's nuclear function(s) will expand the possibilities for early colorectal cancer diagnostics and therapeutics targeted to APC. PMID:19928349

  12. Nuclear astrophysics

    SciTech Connect

    Haxton, W.C.

    1992-01-01

    The problem of core-collapse supernovae is used to illustrate the many connections between nuclear astrophysics and the problems nuclear physicists study in terrestrial laboratories. Efforts to better understand the collapse and mantle ejection are also motivated by a variety of interdisciplinary issues in nuclear, particle, and astrophysics, including galactic chemical evolution, neutrino masses and mixing, and stellar cooling by the emission of new particles. The current status of theory and observations is summarized.

  13. Nuclear astrophysics

    SciTech Connect

    Haxton, W.C.

    1992-12-31

    The problem of core-collapse supernovae is used to illustrate the many connections between nuclear astrophysics and the problems nuclear physicists study in terrestrial laboratories. Efforts to better understand the collapse and mantle ejection are also motivated by a variety of interdisciplinary issues in nuclear, particle, and astrophysics, including galactic chemical evolution, neutrino masses and mixing, and stellar cooling by the emission of new particles. The current status of theory and observations is summarized.

  14. Nuclear theory

    SciTech Connect

    Eisenberg, J.M.; Greiner, W.

    1987-01-01

    This edition incorporates new chapters on the general collective model for low-energy modes; magnetic properties of nuclear collective states; nuclear octupole surface motion; the boson approach to collective motion; heavy-ion physics; nuclear shock waves in relativistic heavy-ion collisions; and nuclear astrophysics. Especially the last two topics are related to other areas of fundamental modern research in high-energy physics and astrophysics. In addition there is a new section on coordinate symmetries in the collective model, and a new section on the two-center shell model.

  15. Investigacin La creciente amenaza de las invasiones biolgicas

    E-print Network

    Espigares, Tíscar

    Investigación La creciente amenaza de las invasiones biológicas P. Castro-Díez (1) , F. Valladares las amenazas ambientales y socioeconómicas que suponen. Introducción Hablamos de invasiones biológicas

  16. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    Instituto de Sistemas e Robotica

    SPECT, PET and CT imaging Molecular imaging Theoretical and psychophysical investigations of image metrology with maximum-likelihood methods Electron imaging Stem cells Digital radiology and telemedicine

  17. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    Lisboa, Universidade Técnica de

    ´atica Aplicada Orientador: Doutor Jos´e F´elix Gomes da Costa Provas conclu´idas em: Resumo: Pretende-se analisar and Recursive Functions Over the Reals Daniel da Silva Gra¸ca MSc thesis (submitted) July 2002 #12;#12;O Computador Anal´ogico e Fun¸c~oes Reais Recursivas Nome: Daniel da Silva Gra¸ca Curso de Mestrado em: Matem

  18. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    Instituto de Sistemas e Robotica

    , provavelmente, mais fortemente influenciou a minha maneira de ser. A Ana ensinou-me que o racionalismo mais bem^encia e Tecnologia, que financiou o meu Doutoramento, e `a Funda¸c~ao Luso-Americana para o

  19. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    Instituto de Sistemas e Robotica

    ;#12;Resumo Muitas tarefas em robotica podem bene ciar perceptualmente do seguimento de alvos moveis no espaco genericos. Apresenta-se a implementac~ao do sistema projectado numa cabeca robotica de vis~ao activa~ao utilizadas no controlo dos movimentos de seguimento. Palavras Chave: vis~ao robotica, percepc~ao, sistemas

  20. Universidade Tecnica de Lishoa Investiga~ao

    E-print Network

    a partir de quatro escolas ja existentes: a Escola Superior de Medicina Veterinaria (a ac tual Faculdade tor experimental de fusao em que participa todo 0 mundo Ocidental) e outros que cruzam a tecnologia '".... '"~ tricidade - e e, desde ja, «0primeiroexemploda globalizacao da ciencia e da tecnologia», atesta Carlos

  1. Nuclear accidents

    NSDL National Science Digital Library

    Iowa Public Television. Explore More Project

    2004-01-01

    Accidents at nuclear power plants can be especially devastating to people and the environment. This article, part of a series about the future of energy, introduces students to nuclear accidents at Chernobyl, Three Mile Island, and Tokaimura. Students explore the incidents by examining possible causes, environmental impacts, and effects on life.

  2. Nuclear safety

    NASA Technical Reports Server (NTRS)

    Buden, D.

    1991-01-01

    Topics dealing with nuclear safety are addressed which include the following: general safety requirements; safety design requirements; terrestrial safety; SP-100 Flight System key safety requirements; potential mission accidents and hazards; key safety features; ground operations; launch operations; flight operations; disposal; safety concerns; licensing; the nuclear engine for rocket vehicle application (NERVA) design philosophy; the NERVA flight safety program; and the NERVA safety plan.

  3. LA ESTRATEGIA Y LA POLÍTICA SECTORIAL DE LAS TECNOLOGÍAS DE LA INFORMACIÓN Y LAS TELECOMUNICACIONES

    Microsoft Academic Search

    Luis Fernando Valenzuela

    2011-01-01

    La política pública de la administración de las Tecnologías de la Información y las Telecomunicaciones, ha experimentado cambios en Colombia. Dichos cambios se inspiran en la necesidad de administrar mejor el espectro radioeléctrico, un recurso escaso del que El Estado es propietario. Los principios de la Ley 1341 de TIC, están inspirados en el enfoque de estrategia emergente, que permitirá

  4. University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas

    E-print Network

    Hemmers, Oliver

    University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas Center for Gaming Research Update January 2012 Three Reports on "Average" Nevada Casinos The Nevada Gaming Abstract Casino, 2011 Two Historical Reports on Nevada Gaming Nevada casino resorts have always been about more

  5. University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas

    E-print Network

    Hemmers, Oliver

    University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas Center://gaming.unlv.edu/about/events.html or contact 702-895-2277. More New & Updated Nevada Reports With the release of the Nevada Gaming Abstract by the Nevada Gaming Control Board, we have been able to release one new report, and to update others. The new

  6. University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas

    E-print Network

    Hemmers, Oliver

    University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas Center for Gaming Research Update September 2013 Mid-Year Southern Nevada report In collaboration with Colliers for the gaming industry in Southern Nevada: 2013 Mid Year Report With half of 2013 behind us, visitor volume

  7. Nuclear War

    SciTech Connect

    MacLeod, G.K.

    1983-01-01

    Several chapters in Last Aid warrant the attention of the medical profession. What is known and not known about acute biologic effects following a nuclear explosion is described. The social, physical, and environmental impact of nuclear war on urban population centers is described. How nuclear weapons could affect the composition of the ozone layer and the effects this could have on human survival, including possible interruption of the aquatic ecosystem to produce single-cell organisms for the food cycle, especially seafood is noted.

  8. El diseño y las industrias manufactureras irlandesas

    Microsoft Academic Search

    Jordi Berrio

    2005-01-01

    Jordi Berrio nos introduce en las experiencia de Irlanda, que ha realizado una verdadera revolución en su estructura productiva. Centrándose básicamente en el diseño industrial, el artículo dibuja un modelo de posibles políticas de promoción del diseño en el que se manifiesta reiteradamente su importancia en el desarrollo de la producción.

  9. Las culturas políticas del republicanismo histórico español

    Microsoft Academic Search

    Román Miguel González

    2004-01-01

    Desde la perspectiva teórica denominada «Giro cultural», hemos tratado de repensar la formación del movimiento republicano español durante el siglo XIX, el cual tradicionalmente ha sido concebido de forma unívoca. En realidad, varios movimientos sociales coexistieron dentro del republicanismo español. Al menos desde tres culturas políticas republicanas (socialismo jacobino, demosocialismo y demoliberalismo) fueron movilizadas las clases populares españolas y se

  10. Las Vegas bets on a CETA pair

    Microsoft Academic Search

    Stevenson

    1976-01-01

    Since mid-1975, the Comprehensive Employment and Training Act (CETA), prime sponsor for Las Vegas and surrounding Clark County has placed about $207,000 in title I funds on two innovative programs. One offers training for radiological safety technicians and the other prepares enrollees to be directional drillers sometimes called slant drillers. The programs utilized facilities at the Nevada Test Site. The

  11. Evidencia sobre las Desinflaciones: Experiencia Internacional

    Microsoft Academic Search

    Carlos Humberto Cardona; Adriana Pontón; Eduardo Sarmiento

    1998-01-01

    En el presente artículo se analizan las políticas desinflacionarias utilizadas para lograr el paso de inflación moderada a inflación de un dígito en nueve países cuya estructura es semejante a la colombiana y cuyo éxito desinflacionario ha sido sostenible. Estos son: Chile, Bolivia, Grecia, España, Portugal, Irlanda, Israel, Nueva Zelandia e Islandia. Además, para cada uno se utilizan dos criterios

  12. LAS Language Arts Supplement, English. Revised Edition.

    ERIC Educational Resources Information Center

    DeAvila, Edward A.; Duncan, Sharon E.

    This collection of over 100 games and activities is intended to increase oral proficiency among Spanish-speaking children without requiring reading skills. The collection grew out of the desire to provide remedies for specific linguistic weaknesses in English as identified by the Language Assessment Scales (LAS). Because tongue twisters, riddles…

  13. AN IMPLEMENTATION OF THE ASPRS LAS STANDARD

    Microsoft Academic Search

    Andre Samberg

    2007-01-01

    The laser scanning technology has become de-facto as a successful measuring mean in numerous applications of remote sensing and mapping. A development of hardware has been followed by a development of a new data file format standard know as the American society for Photogrammetry and Remote Sensing (ASPRS) Lidar Exchange Format (LAS). This data format standard has been designed in

  14. Optimal Speedup of Las Vegas Algorithms

    Microsoft Academic Search

    Michael Luby; Alistair Sinclair; David Zuckerman

    1993-01-01

    Let A be a Las Vegas algorithm, i.e., A is a randomized algorithmthat always produces the correct answer when it stops but whose runningtime is a random variable. We consider the problem of minimizingthe expected time required to obtain an answer from A using strategieswhich simulate A as follows: run A for a fixed amount of timet 1 , then

  15. Las proyecciones de población como método estadístico

    Microsoft Academic Search

    F. J. C. Willekens

    2012-01-01

    La estructura del trabajo es la siguiente. En la sección 2 se introduce el proceso de evento. Se trata de un solo proceso con un resultado. Se describen las principales\\u000acaracterísticas del proceso y se utiliza la microsimulación para determinar la distribución de los tiempos de espera de los acontecimientos. En la sección 3, se considera un proceso recurrente con

  16. Alcoholism and Drug Abuse in Las Juntas

    Microsoft Academic Search

    Suzanne Wasserman

    Background: Originally, while in Costa Rica I wanted to investigate alcoholism and drug addiction within the Las Juntas community. Specifically, I wanted to look at addiction as it pertains to the mining community in comparison with the rest of the public. I hypothesized that there may be cultural influences from the mining community, that may correlate with alcoholism and drug

  17. Premio Casa de las Américas 1995

    E-print Network

    1995-10-01

    112 LATIN AMERICAN THEATRE REVIEW Premio Casa de las Américas 1995 1) El cuento Alguien tiene que llorar, de Marilyn Bobes León, Cuba. 2) El testimonio El sueño africano del Che. ¿Qué sucedió en la guerrilla congolesa?, de William Gálvez, Cuba...

  18. New American Home 2004: Las Vegas, Nevada

    SciTech Connect

    Not Available

    2003-12-01

    The New American Home is an annual showcase project co-sponsored by the National Association of Home Builders' National Council of the Housing Industry and Builder Magazine. Merlin Contracting built this year's home in the Sahara Lake community, just west of downtown Las Vegas.

  19. Las dificultades de sentir: el rol de las emociones en la estigmatización del VIH/SIDA

    PubMed Central

    MARZÁN-RODRÍGUEZ, Melissa; VARAS-DÍAZ, Nelson

    2009-01-01

    Resumen El Virus de Inmunodeficiencia Humana (VIH) y el Síndrome de Inmunodeficiencia Adquirida (SIDA) han sido motivo de estigmatización para las personas que viven con ellos. Esta estigmatización se ha estudiado consecuentemente desde la perspectiva de opiniones de agentes estigmatizantes. Estas opiniones han obviado sistemáticamente el rol de las emociones en el proceso de estigmatización. Llevamos a cabo este estudio con el propósito de identificar el rol de las emociones en el proceso de estigmatización de las personas que viven con el virus (PVVS) por parte de profesionales de la salud. Para lograr este objetivo utilizamos un diseño exploratorio y cualitativo en el cual utilizamos la técnica de entrevistas semiestructuradas a profundidad. La muestra estuvo compuesta por 80 profesionales de la salud y estudiantes de las siguientes especialidades: psicología, trabajo social, medicina y enfermería. Los resultados reflejaron la existencia de emociones asociadas al VIH/SIDA tales como pena, lástima, compasión, asco, fobia y miedo entre los/as profesionales y estudiantes que participaron. Las personas participantes evidenciaron la necesidad de controlar sus emociones al interactuar con PVVS. Los resultados apuntan a la necesidad de explorar aquellos factores que mediatizan las emociones, tales como el contexto social en que se manifiestan y ante quiénes se revelan, para lograr entender a cabalidad el estigma que rodea al VIH/SIDA. PMID:20212916

  20. Nuclear Celebrations

    E-print Network

    Hacker, Randi; Tsutsui, William

    2006-11-01

    Broadcast Transcript: The North Korean situation is frightening for many reasons but none, perhaps, more eerily disturbing than images of North Koreans celebrating in brightly colored costumes just days after the nation's underground nuclear test...

  1. Nuclear Blast

    MedlinePLUS

    ... more susceptible to blast effects. Existing meteorological conditions. Wind speed and direction will affect arrival time of ... from a nuclear explosion may be carried by wind currents for hundreds of miles if the right ...

  2. Nuclear Power

    E-print Network

    Plant on the Vltava River (Czech Republic) ?#1;#1; Eduard Hansl?k, Diana Ivanovov? Fatigue, sleep disorders, and excessive sleepiness: important factors for nuclear power shift workers ??? Marco T?lio de Mello Benchmark modeling and analysis...

  3. Nuclear Nonproliferation

    SciTech Connect

    Atkins-Duffin, C E

    2008-12-10

    With an explosion equivalent of about 20kT of TNT, the Trinity test was the first demonstration of a nuclear weapon. Conducted on July 16, 1945 in Alamogordo, NM this site is now a Registered National Historic Landmark. The concept and applicability of nuclear power was demonstrated on December 20, 1951 with the Experimental Breeder Reactor Number One (EBR-1) lit four light bulbs. This reactor is now a Registered National Historic Landmark, located near Arco, ID. From that moment forward it had been clearly demonstrated that nuclear energy has both peaceful and military applications and that the civilian and military fuel cycles can overlap. For the more than fifty years since the Atoms for Peace program, a key objective of nuclear policy has been to enable the wider peaceful use of nuclear energy while preventing the spread of nuclear weapons. Volumes have been written on the impact of these two actions on the world by advocates and critics; pundits and practioners; politicians and technologists. The nations of the world have woven together a delicate balance of treaties, agreements, frameworks and handshakes that are representative of the timeframe in which they were constructed and how they have evolved in time. Collectively these vehicles attempt to keep political will, nuclear materials and technology in check. This paper captures only the briefest abstract of the more significant aspects on the Nonproliferation Regime. Of particular relevance to this discussion is the special nonproliferation sensitivity associated with the uranium isotope separation and spent fuel reprocessing aspects of the nuclear fuel cycle.

  4. Nuclear accidents.

    PubMed

    Mobley, J A

    1982-05-01

    A nuclear accident with radioactive contamination can happen anywhere in the world. Because expert nuclear emergency teams may take several hours to arrive at the scene, local authorities must have a plan of action for the hours immediately following an accident. The site should be left untouched except to remove casualties. Treatment of victims includes decontamination and meticulous wound debridement. Acute radiation syndrome may be an overwhelming sequela. PMID:7072574

  5. Nuclear cardiac

    SciTech Connect

    Slutsky, R.; Ashburn, W.L.

    1982-01-01

    The relationship between nuclear medicine and cardiology has continued to produce a surfeit of interesting, illuminating, and important reports involving the analysis of cardiac function, perfusion, and metabolism. To simplify the presentation, this review is broken down into three major subheadings: analysis of myocardial perfusion; imaging of the recent myocardial infarction; and the evaluation of myocardial function. There appears to be an increasingly important relationship between cardiology, particularly cardiac physiology, and nuclear imaging techniques. (KRM)

  6. Nuclear waste storage

    SciTech Connect

    NONE

    1995-07-01

    This package details the latest developments and considerations in US DOE for nuclear waste storage. Audiences interested in this package are nuclear waste generating companies, nuclear waste transporting and storage facilities, nuclear energy lobbyists and lawyers representing nuclear waste cases.

  7. Nuclear scales

    SciTech Connect

    Friar, J.L.

    1998-12-01

    Nuclear scales are discussed from the nuclear physics viewpoint. The conventional nuclear potential is characterized as a black box that interpolates nucleon-nucleon (NN) data, while being constrained by the best possible theoretical input. The latter consists of the longer-range parts of the NN force (e.g., OPEP, TPEP, the {pi}-{gamma} force), which can be calculated using chiral perturbation theory and gauged using modern phase-shift analyses. The shorter-range parts of the force are effectively parameterized by moments of the interaction that are independent of the details of the force model, in analogy to chiral perturbation theory. Results of GFMC calculations in light nuclei are interpreted in terms of fundamental scales, which are in good agreement with expectations from chiral effective field theories. Problems with spin-orbit-type observables are noted.

  8. Nuclear waste

    SciTech Connect

    Not Available

    1988-05-01

    This paper discusses how, as part of the Department of Energy's implementation of the Nuclear Waste Policy Act of 1982, DOE is required to investigate a site at Yucca Mountain, Nevada and, if it determines that the site is suitable, recommend to the President its selection for a nuclear waste repository. The Nuclear Regulatory Commission, in considering development of the plan, issued five objections, one of which is DOE's failure to recognize the range of alternative conceptual models of the Yucca Mountain site that can be supported by the limited existing technical data. At the end of the quarter DOE directed its project offices in Washington and Texas to begin orderly phase-out of all site-specific repository activities. Costs for this phase-out are $53 million for the Deaf Smith site and $85 million for the Hanford site.

  9. Nuclear pursuits

    SciTech Connect

    Not Available

    1993-05-01

    This table lists quantities of warheads (in stockpile, peak number per year, total number built, number of known test explosions), weapon development milestones (developers of the atomic bomb and hydrogen bomb, date of first operational ICBM, first nuclear-powered naval SSN in service, first MIRVed missile deployed), and testing milestones (first fission test, type of boosted fission weapon, multistage thermonuclear test, number of months from fission bomb to multistage thermonuclear bomb, etc.), and nuclear infrastructure (assembly plants, plutonium production reactors, uranium enrichment plants, etc.). Countries included in the tally are the United States, Soviet Union, Britain, France, and China.

  10. Nuclear winter or nuclear fall?

    NASA Astrophysics Data System (ADS)

    Berger, André

    Climate is universal. If a major modern nuclear war (i.e., with a large number of small-yield weapons) were to happen, it is not even necessary to have a specific part of the world directly involved for there to be cause to worry about the consequences for its inhabitants and their future. Indeed, smoke from fires ignited by the nuclear explosions would be transported by winds all over the world, causing dark and cold. According to the first study, by Turco et al. [1983], air surface temperature over continental areas of the northern mid-latitudes (assumed to be the nuclear war theatre) would fall to winter levels even in summer (hence the term “nuclear winter”) and induce drastic climatic conditions for several months at least. The devastating effects of a nuclear war would thus last much longer than was assumed initially. Discussing to what extent these estimations of long-term impacts on climate are reliable is the purpose of this article.

  11. Nuclear fusion

    Microsoft Academic Search

    T. K. Fowler

    1989-01-01

    The advantages of nuclear fusion as an energy source and research progress in this area are summarized. The current state of the art is described. Laser fusion, inertial confinement fusion, and magnetic fusion (the tokamak) are explained, the latter in some detail. Remaining problems and planned future reactors are considered. They are the Compact Ignition Tokamak (CIT), the International Thermonuclear

  12. Nuclear Science.

    ERIC Educational Resources Information Center

    Pennsylvania State Dept. of Education, Harrisburg. Bureau of Curriculum Services.

    This document is a report on a course in nuclear science for the high school curriculum. The course is designed to provide a basic but comprehensive understanding of the atom in the light of modern knowledge, and to show how people attempt to harness the tremendous energy liberated through fission and fusion reactions. The course crosses what are…

  13. Nuclear Golf

    E-print Network

    Hacker, Randi; Tsutsui, William

    2006-12-06

    Broadcast Transcript: Pay no attention to that nuclear warhead behind the 18th hole; just shout "Fore!" and drive your Titleist down the fairway. In a development that is bizarre even by North Korean standards, the country is making a move to sell...

  14. Nuclear Induction

    Microsoft Academic Search

    F. Bloch

    1946-01-01

    The magnetic moments of nuclei in normal matter will result in a nuclear paramagnetic polarization upon establishment of equilibrium in a constant magnetic field. It is shown that a radiofrequency field at right angles to the constant field causes a forced precession of the total polarization around the constant field with decreasing latitude as the Larmor frequency approaches adiabatically the

  15. Nuclear medicine

    SciTech Connect

    Wagner, H.N. Jr.

    1986-10-17

    In 1985 and 1986 nuclear medicine became more and more oriented toward in vov chemistry, chiefly as a result of advances in positron emission tomography (PET). The most important trend was the extension of PET technology into the care of patients with brain tumors, epilepsy, and heart disease. A second trend was the increasing use of single-photon emission computed tomography (SPECT).

  16. NUCLEAR REACTOR

    Microsoft Academic Search

    Grebe

    1959-01-01

    High temperature reactors which are uniquely adapted to serve as the ; heat source for nuclear pcwered rockets are described. The reactor is comprised ; essentially of an outer tubular heat resistant casing which provides the main ; coolant passageway to and away from the reactor core within the casing and in ; which the working fluid is preferably hydrogen

  17. Nuclear fission

    Microsoft Academic Search

    J. A. Wheeler

    1956-01-01

    Nuclear fission is reviewed. The value of a channel analysis is noted in determining fission cross sections, fluctuations in fission widths and fission asymmetry. The importance of barrier height in any fission mode is emphasized. The difficulty of obtaining the mass distribution of fission fragments by a statistical theory is noted; this situation arises because the result is a strong

  18. Nuclear fission

    Microsoft Academic Search

    R. Vandenbosch; J. R. Huizenga

    1973-01-01

    The object of the book is to provide a comprehensive account of present ; understanding of nuclear fission. While it is written at an introductory level ; for students of the physics and chemistry of fission, it also attempts to cover ; recent developments at a sufficient depth to make the volume valuable to research ; scientists. The theoretical framework

  19. Nuclear Misinformation

    ERIC Educational Resources Information Center

    Ford, Daniel F.; Kendall, Henry W.

    1975-01-01

    Many scientists feel that research into nuclear safety has been diverted or distorted, and the results of the research concealed or inaccurately reported on a large number of occasions. Of particular concern have been the emergency cooling systems which have not, as yet, been adequately tested. (Author/MA)

  20. Nuclear Terrorism.

    SciTech Connect

    Hecker, Siegfried S.

    2001-01-01

    As pointed out by several speakers, the level of violence and destruction in terrorist attacks has increased significantly during the past decade. Fortunately, few have involved weapons of mass destruction, and none have achieved mass casualties. The Aum Shinrikyo release of lethal nerve agent, sarin, in the Tokyo subway on March 20, 1995 clearly broke new ground by crossing the threshold in attempting mass casualties with chemical weapons. However, of all weapons of mass destruction, nuclear weapons still represent the most frightening threat to humankind. Nuclear weapons possess an enormous destructive force. The immediacy and scale of destruction are unmatched. In addition to destruction, terrorism also aims to create fear among the public and governments. Here also, nuclear weapons are unmatched. The public's fear of nuclear weapons or, for that matter, of all radioactivity is intense. To some extent, this fear arises from a sense of unlimited vulnerability. That is, radioactivity is seen as unbounded in three dimensions - distance, it is viewed as having unlimited reach; quantity, it is viewed as having deadly consequences in the smallest doses (the public is often told - incorrectly, of course - that one atom of plutonium will kill); and time, if it does not kill you immediately, then it will cause cancer decades hence.

  1. Nuclear reactor

    Microsoft Academic Search

    M. Furudate; T. Miyazawa; H. Mizuguchi; K. Sasaki; N. Uesugi

    1981-01-01

    A nuclear reactor is described which comprises a reactor vessel, a core housed in the reactor vessel, an ultrasonic transducer mounted in the vicinity of the upper end of the core for emitting and receiving an ultrasonic wave pulse signal propagating above the core. A means is provided for rotating the transducer by a prescribed angle to scan horizontally the

  2. Regulation of las and rhl Quorum Sensing in Pseudomonas aeruginosa

    Microsoft Academic Search

    EVERETT C. PESCI; JAMES P. PEARSON; PATRICK C. SEED; BARBARA H. IGLEWSKI

    1997-01-01

    The production of several virulence factors by Pseudomonas aeruginosa is controlled according to cell density through two quorum-sensing systems, las and rhl. The las system is comprised of the transcriptional activator protein LasR and of LasI, which directs the synthesis of the autoinducer PAI-1. Similarly, the rhl system consists of the transcriptional activator protein RhlR and of RhlI, which directs

  3. ?Cuales son las amenazas o peligros volcanicos?

    USGS Publications Warehouse

    Myers, Bobbie; Brantley, Steven R.; Stauffer, Peter; Hendley, James W., II

    2000-01-01

    Los volcanes son capaces de producir numerosos peligros geologicos e hidrologicos. Los cientificos del Servicio Geologico de los EE. UU. (USGS, por sus siglas en ingles) y de otras instituciones alrededor del mundo estan estudiando los peligros de muchos de los centenares de volcanes activos y potencialmente activos del mundo. Estos cientificos vigilan muy de cerca la actividad de algunos de los volcanes mas peligrosos, por lo que estan preparados para alertar a las autoridades y/o a la poblacion en caso de que aumente sustancialmente la probabilidad de que ocurra una erupcion u otro evento peligroso.

  4. Nuevas tecnologías, democracia y eficiencia de las instituciones políticas

    Microsoft Academic Search

    Joan Oriol Prats

    2006-01-01

    En este artículo, se estudia el impacto que las tecnologías de la información y la comunicación (TIC) y el nivel de democracia que tienen sobre el desempeño de las instituciones políticas. En primer lugar, se estudia empíricamente el impacto que las TIC tienen sobre la eficacia de la acción de gobierno. A este respecto, se muestra estadísticamente para un conjunto

  5. LANDSCAPE CHANGE OF THE LAS VEGAS VALLEY, 1972 TO 1998

    EPA Science Inventory

    Las Vegas has become one of the fastest growing metropolitan areas in the United States. The cities population has doubled from 1980 to 1994 and in 1995 Las Vegas has surpassed the one million mark. The population of Las Vegas is currently growing at a rate of 7 percent annually....

  6. La minoría catalana en las Cortes Constituyentes (1931-1933)

    Microsoft Academic Search

    Arnau Gonzàlez i Vilalta

    2004-01-01

    La necesidad de estudios que analicen la política desarrollada por las diferentes minorías en las Cortes resulta imprescindible para entender la compleja política de la década de los treinta. En este contexto, el presente artículo analiza el papel desarrollado por los diputados elegidos en Cataluña en las elecciones a Cortes Constituyentes de 1931. En esas Cortes, los diputados catalanes, sobre

  7. ESTADO DEL ARTE DE CREENCIAS Y ACTITUDES HACIA LAS MATEMÁTICAS

    Microsoft Academic Search

    Genaro Hernández Salazar

    2011-01-01

    La enseñanza de las matemáticas es actualmente de gran interés para los actores responsables del acto educativo, ya que los propósitos se entienden diferente para alumnos y profesores. Tal situación ha llevado a los matemáticos educativos y otros investigadores a indagar sobre las creencias y actitudes de estudiantes y docentes de matemáticas y su influencia en el logro académico. Las

  8. Nuclear Power Plant Accidents

    MedlinePLUS

    NUCLEAR POWER PLANT ACCIDENTS Nuclear power plants have safety and security procedures in place and are closely monitored by the ... a plume). What are the main dangers of nuclear power plant accidents? Radioactive materials in the plume from the nuclear ...

  9. Advanced Airborne CO2 LAS System

    NASA Astrophysics Data System (ADS)

    Dobler, J. T.; Braun, M. G.; McGregor, D. P.; Erxleben, W. H.; Browell, E. V.; Harrison, F. W.

    2009-12-01

    A unique airborne Laser Absorption Spectroscopy (LAS) system has been developed by ITT Space Systems, LLC to address the needs of the National Research Council Decadal Survey Tier 2 mission for Active Sensing of CO2 Emissions over Nights, Days and Seasons (ASCENDS). This instrument has undergone multiple airborne field tests in cooperation with our partners at NASA Langley Research Center (LaRC). The instrument was built largely with off-the-shelf components and uses high reliability telecom components, including lasers, modulators and fiber amplifiers as the transmitter. Multiple wavelengths are transmitted simultaneously from a single collimator and the return signal is collected by a simple 8” telescope that is fiber coupled to a HgCdTe APD. The analog signal is sampled with a high resolution scope card housed in a National Instruments PXI chassis and the digitized signal is then passed through our custom-built software-based lock-in processing system which allows separation of the signals from the individual wavelengths. The separated signals are then used in the standard Differential Absorption Lidar (DIAL) relations to determine the integrated column differential optical depth. This presentation will give a detailed overview of this multi-frequency, single-beam, synchronous lock-in LAS instrument including the basic methodology of the measurement. Recent improvements in the lock-in methodology designed to eliminate the effects of multi- path fading and frequency dependence of the electronic components will also be discussed.

  10. Nuclear Fusion

    NSDL National Science Digital Library

    2012-12-26

    This simple and engaging astronomy activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model. Learners will explore what cosmic radiation is and where it comes from, and how the elements in the universe are generated. The PDF contains step-by-step instructions, photos, presentation tips, links to background information, and a printable Periodic Table of the Elements.

  11. Nuclear reactor

    Microsoft Academic Search

    W. E. Pennell; W. J. Rowan

    1977-01-01

    A nuclear reactor is described in which the core components, including fuel-rod assemblies, control-rod assemblies, fertile rod-assemblies, and removable shielding assemblies, are supported by a plurality of separate inlet modular units. These units are referred to as inlet module units to distinguish them from the modules of the upper internals of the reactor. The modular units are supported, each removable

  12. Nuclear reactor

    Microsoft Academic Search

    William E. Pennell; William J. Rowan

    1977-01-01

    A nuclear reactor in which the core components, including fuel-rod assemblies, control-rod assemblies, fertile rod-assemblies, and removable shielding assemblies, are supported by a plurality of separate inlet modular units. These units are referred to as inlet module units to distinguish them from the modules of the upper internals of the reactor. The modular units are supported, each removable independently of

  13. Josefina Bueno: "la exhibicin de la religin instrumentaliza a las mujeres y las convierte en signos visibles de su ideologa"

    E-print Network

    Escolano, Francisco

    fragilidad de la representación pública de las mujeres" y reivindica su papel en las redes sociales que tanta, disidente, en el panorama político y social tan convulso" de sus países de origen. Josefina Bueno considera revueltas y de los cambios sociales porque "además de protagonistas serán las principales afectadas

  14. Qu puedo encontrar Todas las monografas, ttulos de revistas en papel y material multimedia existentes en las bibliotecas de

    E-print Network

    Escolano, Francisco

    existentes en las 24.000 bibliotecas integrantes de la OCLC (Online Computer Library Center) Los títulos de referencias bibliográficas contenidas en las siguientes bases de datos: ArticleFirst, British Library Serials bibliográficas contenidas en las siguientes bases de datos: ArticleFirst, British Library Serials, ERIC, MEDLINE

  15. METROPOLIZACIN, TRANSFORMACIONES MERCANTILES Y GOBERNANZA EN LOS PASES EMERGENTES LAS GRANDES CIUDADES EN LAS MUTACIONES DEL COMERCIO MUNDIAL

    E-print Network

    Paris-Sud XI, Université de

    CIUDADES EN LAS MUTACIONES DEL COMERCIO MUNDIAL SEMINARIO INTERNACIONAL ­ 1-3 DE JULIO DE 2009 - COLEGIO DE países emergentes las grandes ciudades en las mutaciones del comercio mundial Seminario Internacional una revisión de esa tesis. 1. Porque la expansión internacional del comercio a menudeo La expansión

  16. Nuclear photonics

    NASA Astrophysics Data System (ADS)

    Habs, D.; Günther, M. M.; Jentschel, M.; Thirolf, P. G.

    2012-07-01

    With the planned new ?-beam facilities like MEGa-ray at LLNL (USA) or ELI-NP at Bucharest (Romania) with 1013 ?/s and a band width of ?E?/E??10-3, a new era of ? beams with energies up to 20MeV comes into operation, compared to the present world-leading HI?S facility at Duke University (USA) with 108 ?/s and ?E?/E??3?10-2. In the long run even a seeded quantum FEL for ? beams may become possible, with much higher brilliance and spectral flux. At the same time new exciting possibilities open up for focused ? beams. Here we describe a new experiment at the ? beam of the ILL reactor (Grenoble, France), where we observed for the first time that the index of refraction for ? beams is determined by virtual pair creation. Using a combination of refractive and reflective optics, efficient monochromators for ? beams are being developed. Thus, we have to optimize the total system: the ?-beam facility, the ?-beam optics and ? detectors. We can trade ? intensity for band width, going down to ?E?/E??10-6 and address individual nuclear levels. The term "nuclear photonics" stresses the importance of nuclear applications. We can address with ?-beams individual nuclear isotopes and not just elements like with X-ray beams. Compared to X rays, ? beams can penetrate much deeper into big samples like radioactive waste barrels, motors or batteries. We can perform tomography and microscopy studies by focusing down to ?m resolution using Nuclear Resonance Fluorescence (NRF) for detection with eV resolution and high spatial resolution at the same time. We discuss the dominating M1 and E1 excitations like the scissors mode, two-phonon quadrupole octupole excitations, pygmy dipole excitations or giant dipole excitations under the new facet of applications. We find many new applications in biomedicine, green energy, radioactive waste management or homeland security. Also more brilliant secondary beams of neutrons and positrons can be produced.

  17. Calculo estocastico aplicado a las finanzas: Precio de las opciones segun el modelo

    E-print Network

    Ruiz, Jesús M.

    modelizaci´on muy general de los mercados financieros. Este trabajo ha sido financiado por el Ministerio de­Scholes­Merton, semimartingalas, integraci´on con semimar- tingalas, modelos financieros generales. 1. Introducci´on L. Bachelier no admite arbitrajes y es completo (se pueden replicar las opciones). Aparte de los resultados financieros

  18. Infraestructura para la mayor integración de las Américas. VI Cumbre de las Américas

    Microsoft Academic Search

    Tito Yepes

    2011-01-01

    Introducción. Promover la mayor integración física en las Américas tiene como objetivo desencadenar efectos cascada sobre la productividad, el comercio intrarregional y la inserción de los países en la economía mundial. La adecuación y expansión de la infraestructura regional, sub-regional y nacional como carreteras, ferrocarriles, puertos, aeropuertos y centrales de generación eléctrica tendrá un efecto positivo sobre la competitividad regional

  19. The Nuclear Power and Nuclear Weapons Connection.

    ERIC Educational Resources Information Center

    Leventhal, Paul

    1990-01-01

    Explains problems enforcing the Nuclear Non-Proliferation Treaty (NPT) of 1968. Provides factual charts and details concerning the production of nuclear energy and arms, the processing and disposal of waste products, and outlines the nuclear fuel cycle. Discusses safeguards, the risk of nuclear terrorism, and ways to deal with these problems. (NL)

  20. The Nuclear Power/Nuclear Weapons Connection.

    ERIC Educational Resources Information Center

    Totten, Sam; Totten, Martha Wescoat

    1985-01-01

    Once they have nuclear power, most countries will divert nuclear materials from commercial to military programs. In excerpts from the book "Facing the Danger" (by Totten, S. and M. W., Crossing Press, 1984), five anti-nuclear activists explain how and why they have been addressing the nuclear connection. (RM)

  1. Las Cumbres Observatory Global Telescope Network

    NSDL National Science Digital Library

    Las Cumbres Observatory

    2007-07-02

    Las Cumbres Observatory Global Telescope Network (LCOGTN) features a comprehensive science research program and an innovative astronomy-education program featuring state-of-the-art instructional materials appropriate for students at all levels, from elementary school through postsecondary. LCOGTN operates two research-class robotic telescopes, the Faulkes Telescope North, located in Maui, Hawaii, and the Faulkes Telescope South, located in Australia at Siding Spring Observatory. These telescopes are available to teachers to use as part of their curricular or extracurricular activities, and are supported by a range of educational materials and a team of educators and professional astronomers. Additional telescopes in Mississippi, Texas, California, and the United Kingdom will further broaden the Network's scope. Real-time observation and still images available.

  2. Nuclear reactor

    SciTech Connect

    Furudate, M.; Miyazawa, T.; Mizuguchi, H.; Sasaki, K.; Uesugi, N.

    1981-09-22

    A nuclear reactor is described which comprises a reactor vessel, a core housed in the reactor vessel, an ultrasonic transducer mounted in the vicinity of the upper end of the core for emitting and receiving an ultrasonic wave pulse signal propagating above the core. A means is provided for rotating the transducer by a prescribed angle to scan horizontally the ultrasonic wave emitted from the transducer. A plurality of reflective means are mounted in the vicinity of the upper end of the core in a manner to face the transducer for reflecting the ultrasonic wave signal emitted from the transducer.

  3. Nuclear reactor

    SciTech Connect

    Sato, M.

    1984-08-14

    A nuclear reactor of the type which uses liquid metal as primary and secondary coolants, and wherein the reactor vessel contains a core and a plurality of vertically extending cylindrical intermediate heat exchangers for carrying out heat exchange between the primary and secondary coolants; primary coolant circulation pumps disposed outside of the reactor vessel; a pipe for conducting to the circulation pump the primary coolant which has passed through the intermediate heat exchangers after leaving the core; and a pipe for guiding the primary coolant discharged from the circulation pump to the core through the reactor vessel.

  4. Las Vegas Basin Seismic Response Project: Preliminary Results From Seismic Refraction Experiments, Las Vegas, NV.

    NASA Astrophysics Data System (ADS)

    Zaragoza, S. A.; Snelson, C. M.; Harder, S. H.; Kaip, G.; Luke, B.; Buck, B. J.; Hanson, A. D.

    2002-12-01

    In May and September 2002, seismic refraction data were acquired in the Las Vegas basin. Located in the southern Basin and Range province, the cities of Las Vegas, North Las Vegas, and Henderson sit atop a fault-bounded basin with a depth of up to 5 km and basin dimensions of roughly 60 km wide (east-west) by 50 km in length (north-south). Previous isostatic gravity, seismic reflection, and aeromagnetic studies indicate that a series of sub-basins exist beneath the unconsolidated basin fill, with the deepest sub-basin occurring 5 km west of the fault block bounding the eastern edge of the basin (Frenchman Mountain). The basin is significantly deeper along its northern extremity, following the path of the fault block bounding the northern edge of the basin (Las Vegas Valley Shear Zone), and along the western edge of Frenchman Mountain. Recent, paleoseismic studies have indicated that faults in the Las Vegas region have the potential for an earthquake of M6.5 to 7.0. It is estimated that a M6.9 earthquake in the basin could produce about 11 billion dollars in damage and a significant number of deaths and/or injuries. In addition, an equivalent or larger event in the Death Valley fault zone, 150 km distance, would also be devastating to the metropolitan area of approximately 1.5 million residents. Therefore, it is essential to understand the seismic hazard posed to the Las Vegas region. This project is part of a larger collaborative effort to characterize the basin and its response to ground shaking. The University of Nevada, Las Vegas with assistance from the University of Texas at El Paso, students from UNLV and UTEP, volunteers from the community and several students from Centennial High school deployed 432 portable seismic recorders ("Texans") throughout the valley. Shot point locations were located at three quarries in the valley, one to the north, one to the east and one to the southwest. The profiles cross the Las Vegas Valley Shear zone as well as a prominent NW/SE trending step in the basin floor across which the basement drops from 2 to 4 km in depth. In addition, the profiles cross several Quaternary fault scarps, which have recently been identified as tectonic in origin. Preliminary analyses of the seismic refraction data indicate that the basin has an average P-wave velocity of 4.5 km/s and is in agreement with the estimated basin depths from isostatic gravity studies (2 to 5 km depth). Both tomographic inversion and forward modeling techniques are being used to analyze these data. These data will be used to produce a velocity model of the basin and image the basin/bedrock contact. In addition, these data will be integrated into a community model, which is being produced by the Las Vegas Basin Seismic Response working group to further assess the site response of the basin.

  5. Dictionary of nuclear engineering

    SciTech Connect

    Sube, R.

    1985-01-01

    Ralf Sube, an experienced compiler of three wellknown four-language reference works has now prepared this glossary of nuclear engineering terms in English, German, French and Russian. Based on the proven lexicography of the Technik-Worterbuch series, it comprises about 30,000 terms in each language covering the following: Nuclear and Atomic Physics; Nuclear Radiation and Isotopes; Nuclear Materials; Nuclear Facilties; Nuclear Power Industry; Nuclear Weapons.

  6. Japan's nuclear fuel cycle

    Microsoft Academic Search

    Atsuyuki Suzuki

    1997-01-01

    Nuclear power is the largest single source of electrical power in Japan, providing a third of Japan's energy needs. Because of its lack of natural resources, Japan has long supported a nuclear power program with a special focus on recycling nuclear fuel. The first commercial spent nuclear fuel reprocessing plant is now under construction in Aomori Prefecture. Nuclear energy is

  7. Nuclear Education Update.

    ERIC Educational Resources Information Center

    Winter, Metta L.

    1986-01-01

    Addresses the controversial issue of nuclear education in public schools. Highlights include resolutions passed by the National Congress of Parent Teacher Associations, what nuclear education is, distinction between nuclear education and education in the nuclear age, educational materials, a review of teaching materials, nuclear literacy, and…

  8. INSTRUCTIONS FOR SUBMITTING NUCLEAR

    E-print Network

    waste management proceedings. Keywords Nuclear, nuclear power plant, spent fuel, nuclear waste, dataCALIFORNIA ENERGY COMMISSION INSTRUCTIONS FOR SUBMITTING NUCLEAR POWER PLANT-RELATED DATA of Submitted Data 3 NUCLEAR POWER PLANT DATA REQUESTS 6 A. Environmental Impacts 6 B. Spent Fuel Generation 8 C

  9. Nuclear Waste Disposal

    Microsoft Academic Search

    Glendon W. Gee; Philip D. Meyer; Andy L. Ward

    2005-01-01

    Nuclear wastes are by-products of nuclear weapons production and nuclear power generation, plus residuals of radioactive materials used by industry, medicine, agriculture, and academia. Their distinctive nature and potential hazard make nuclear wastes not only the most dangerous waste ever created by mankind, but also one of the most controversial and regulated with respect to disposal. Nuclear waste issues, related

  10. Objections to nuclear defence

    Microsoft Academic Search

    N. Blake; K. Pole

    1984-01-01

    This book presents papers on nuclear deterrence. Topics considered include nuclear warfare, nuclear deterrence and the use of the just war doctrine, political aspects, human survival, moral aspects, the nuclear arms race, the ideology of nuclear deterrence, arms control, proliferation, and public opinion.

  11. Nuclear "waffles"

    NASA Astrophysics Data System (ADS)

    Schneider, A. S.; Berry, D. K.; Briggs, C. M.; Caplan, M. E.; Horowitz, C. J.

    2014-11-01

    Background: The dense neutron-rich matter found in supernovae and inside neutron stars is expected to form complex nonuniform phases, often referred to as nuclear pasta. The pasta shapes depend on density, temperature and proton fraction and determine many transport properties in supernovae and neutron star crusts. Purpose: To characterize the topology and compute two observables, the radial distribution function (RDF) g (r ) and the structure factor S (q ) , for systems with proton fractions Yp=0.10 ,0.20 ,0.30 , and 0.40 at about one-third of nuclear saturation density, n =0.050 fm-3 , and temperatures near k T =1 MeV . Methods: We use two recently developed hybrid CPU/GPU codes to perform large scale molecular dynamics (MD) simulations with 51 200 and 409 600 nucleons. From the output of the MD simulations we obtain the two desired observables. Results: We compute and discuss the differences in topology and observables for each simulation. We observe that the two lowest proton fraction systems simulated, Yp=0.10 and 0.20 , equilibrate quickly and form liquidlike structures. Meanwhile, the two higher proton fraction systems, Yp=0.30 and 0.40 , take a longer time to equilibrate and organize themselves in solidlike periodic structures. Furthermore, the Yp=0.40 system is made up of slabs, lasagna phase, interconnected by defects while the Yp=0.30 systems consist of a stack of perforated plates, the nuclear waffle phase. Conclusions: The periodic configurations observed in our MD simulations for proton fractions Yp?0.30 have important consequences for the structure factors S (q ) of protons and neutrons, which relate to many transport properties of supernovae and neutron star crust. A detailed study of the waffle phase and how its structure depends on temperature, size of the simulation, and the screening length showed that finite-size effects appear to be under control and, also, that the plates in the waffle phase merge at temperatures slightly above 1.0 MeV and the holes in the plates form a hexagonal lattice at temperatures slightly lower than 1.0 MeV .

  12. 77 FR 77090 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-31

    ...the BLM Las Cruces District Office, 1800 Marquess Street, Las Cruces, NM 88005. FOR FURTHER INFORMATION CONTACT: Rena Gutierrez, BLM Las Cruces District, 1800 Marquess Street, Las Cruces, NM, 88005, 575-525-4338. Persons who use a...

  13. 78 FR 65356 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-31

    ...the BLM Las Cruces District Office, 1800 Marquess Street, Las Cruces, NM 88005. FOR FURTHER INFORMATION CONTACT: Rena Gutierrez, BLM Las Cruces District, 1800 Marquess Street, Las Cruces, NM, 88005, 575-525-4338. Persons who use a...

  14. Relevamiento de HI en las Nubes de Magallanes

    NASA Astrophysics Data System (ADS)

    Bajaja, E.; Morras, R.; Arnal, E. M.; Pöppel, W. G. L.

    El relevamiento de HI en el hemisferio sur, que se está realizando desde el IAR con el nuevo receptor enfriado, abarca, en su rango de velocidades, las velocidades desplegadas por el hidrógeno neutro de las Nubes de Magallanes. Esto permite obtener los perfiles de velocidad correspondientes a estas galaxias con una sensibilidad y una completitud de grilla excepcionales para el estudio de la distribución y de la cinemática del gas a gran escala y con una resolución angular de 30' y una resolución en velocidad de 1 km/s. Estas condiciones permiten el estudio de los campos de velocidad, de las componentes múltiples en velocidad, de las asimetrías, concentraciones y burbujas en la distribución del gas, los puentes entre las Nubes y entre las Nubes y la Galaxia, etc. Estas características son de particular importancia para su correlación con los mapas obtenidos con las emisiones en el radio-continuo, el IR y el CO (relacionable con el hidrógeno molecular) todas las cuales permiten el estudio de la dinámica de las Nubes y su relación con la Galaxia, de la formación y evolución estelar y de la evolución de la Nubes mismas.

  15. Nuclear Heart Scan

    MedlinePLUS

    ... from the NHLBI on Twitter. What Is a Nuclear Heart Scan? A nuclear heart scan is a test that provides important ... use it to create pictures of your heart. Nuclear heart scans are used for three main purposes: ...

  16. Nuclear Stress Test

    MedlinePLUS

    ... rest (left) and during exercise (right) from a nuclear stress test. A nuclear stress test lets doctors see pictures of your ... the heart has any damaged or dead muscle. Nuclear stress tests can also give doctors information about ...

  17. Nuclear thermal/nuclear electric hybrids

    NASA Technical Reports Server (NTRS)

    Reid, B. D.

    1991-01-01

    A description is given of the nuclear thermal and nuclear electric hybrid. The specifications are described along with its mission performance. Next, the technical status, development requirements, and some cost estimates are provided.

  18. Nuclear Fuel Cycle & Vulnerabilities

    SciTech Connect

    Boyer, Brian D. [Los Alamos National Laboratory

    2012-06-18

    The objective of safeguards is the timely detection of diversion of significant quantities of nuclear material from peaceful nuclear activities to the manufacture of nuclear weapons or of other nuclear explosive devices or for purposes unknown, and deterrence of such diversion by the risk of early detection. The safeguards system should be designed to provide credible assurances that there has been no diversion of declared nuclear material and no undeclared nuclear material and activities.

  19. Nuclear weapons modernizations

    SciTech Connect

    Kristensen, Hans M. [Federation of American Scientists, Washington, DC (United States)

    2014-05-09

    This article reviews the nuclear weapons modernization programs underway in the world's nine nuclear weapons states. It concludes that despite significant reductions in overall weapons inventories since the end of the Cold War, the pace of reductions is slowing - four of the nuclear weapons states are even increasing their arsenals, and all the nuclear weapons states are busy modernizing their remaining arsenals in what appears to be a dynamic and counterproductive nuclear competition. The author questions whether perpetual modernization combined with no specific plan for the elimination of nuclear weapons is consistent with the nuclear Non-Proliferation Treaty and concludes that new limits on nuclear modernizations are needed.

  20. Focused technology: Nuclear propulsion

    NASA Technical Reports Server (NTRS)

    Miller, Thomas J.

    1993-01-01

    Five viewgraphs are presented that outline the objectives and elements of the Nuclear Propulsion Program, mission considerations, propulsion technologies, and the logic flow path for nuclear propulsion development.

  1. Nuclear weapons modernizations

    NASA Astrophysics Data System (ADS)

    Kristensen, Hans M.

    2014-05-01

    This article reviews the nuclear weapons modernization programs underway in the world's nine nuclear weapons states. It concludes that despite significant reductions in overall weapons inventories since the end of the Cold War, the pace of reductions is slowing - four of the nuclear weapons states are even increasing their arsenals, and all the nuclear weapons states are busy modernizing their remaining arsenals in what appears to be a dynamic and counterproductive nuclear competition. The author questions whether perpetual modernization combined with no specific plan for the elimination of nuclear weapons is consistent with the nuclear Non-Proliferation Treaty and concludes that new limits on nuclear modernizations are needed.

  2. Compact Groups of Galaxies in the Las Campanas Redshift Survey

    Microsoft Academic Search

    S. S. Allam; D. L. Tucker

    2000-01-01

    We have recently extracted a catalog of compact groups of galaxies (CGs) from the Las Campanas Redshift Survey. This catalog of Las Campanas Compact Groups (LCCGs) contains 76 CGs with a median redshift of z_med ~ 0.08. The physical properties of these CGs are similar to those from the Hickson (1982) and the Barton et al. (1996) catalogs. Here, we

  3. Fingerprint Indexing Based on LAS Registration , Chao Zhang1

    E-print Network

    Hao, Pengwei

    Fingerprint Indexing Based on LAS Registration Tong Liu1 , Chao Zhang1 and Pengwei Hao1,2 1 Fingerprint indexing is an efficient technique that greatly improves the performance of fingerprint based method based on fingerprint registration with a novel feature called local axial symmetry (LAS

  4. LAS NUEVAS TECNOLOGÍAS PARA EL APOYO DE LOS PROCESOS EDUCATIVOS

    Microsoft Academic Search

    Francisco Morfín

    Con ánimo y necesidad crecientes, un mayor número de instituciones educativas están destinando recursos a la creación de instancias que estudien las formas en que las nuevas tecnologías de información y comunicación podrán emplearse como vehículo de mediaciones educativas. Estos estudios cuentan ya con una historia de poco más de 40 años y los usos y aplicaciones de estas herramientas

  5. Integración de la enseñanza de las tic en la educación

    Microsoft Academic Search

    Osmany Aguilera Almaguer; Madelín Aguilera Borja; Eduardo Peña Cruz

    2011-01-01

    En el contexto de integración de la enseñanza de las TIC en la educación se adquieren trascendencia y fuertes implicaciones hacia el futuro y en particular con la enseñanza de la Informática, lo que constituye un espacio que cristaliza las múltiples facetas del desarrollo social en aras de alcanzar la formación integral de niños, adolescentes y jóvenes con el apoyo

  6. Calidad del aire interior y salud en las viviendas

    E-print Network

    Calidad del aire interior y salud en las viviendas temporales de FEMA A los residentes de los tráileres Los Centros para el Control y la Prevención de Enfermedades (CDC) responden a las preocupa ciones que usted pueda tener sobre la calidad del aire y el formaldehído en los tráileres de FEMA. Usted

  7. Translational genomics of Vegetable Crops Las Vegas, NV

    E-print Network

    Douches, David S.

    Translational genomics of Vegetable Crops Las Vegas, NV July 21, 2005 David Francis and Allen Van Deynze At the recent ASHS meetings in Las Vegas, a workshop "Translational Genomics of Vegetable Crops interventions" (Minna and Gazdar, 1996). In applied plant science, "translational genomics" implies

  8. EL TURISMO ELECTRÓNICO, UNA NECESIDAD PARA LAS EMPRESAS DEL SECTOR

    Microsoft Academic Search

    Ernesto Manuel Conde Pérez; Nel Enrique Cristian Schmidt Cornejo; Ileana Ochoa Llamas

    2011-01-01

    La importancia y la necesidad de la utilización del Comercio Electrónico en la industria turística ayuda a mejorar las operaciones tradicionales practicadas en los negocios, tanto en la estrategia empresarial como en la reingeniería del negocio turístico. El hecho de que predominen las pequeñas y medianas empresas en el sector implica que la utilización del e-Commerce no se ha extendido

  9. Chasing Pokemon - in pursuit of the LAS ideal

    Microsoft Academic Search

    Chris Orsmond

    A 'remembered' moment from a lecture given by James Gee (2000) at the University of the Witwatersrand in which he compared the infinite possibilities of creating Pokemons to the infinite options for Language and Academic Skills (LAS) units became the catalyst for an interrogation of my current LAS model. Does it, in fact, promote 'equity of access and … enhance

  10. Impacto de las tic en la enseñanza universitaria

    Microsoft Academic Search

    Pere Marquès Graells

    2008-01-01

    Dividido en dos partes, el presente artículo intenta plantearnos el presente, pasado y futuro de la implantación de las TIC en la universidad. Siendo conscientes de la inmersión progresiva de la cultura de la información, debemos tener claro que no todas las instituciones avanzan de la misma manera. De tal forma que se hace necesaria, si no obligatoria, una adaptación

  11. Trazabilidad y Unificación de las escalas de Dureza en México

    Microsoft Academic Search

    Alfredo Esparza Ramírez

    Resumen. Las mediciones de dureza desempeñan un papel importante en la determinación de las características mecánicas de un material y, es frecuente que estos resultados se tomen como base para la aceptación o rechazo de piezas terminadas. Ante la diversidad de métodos, escalas, penetradores, fuerzas aplicadas y tiempos de prueba no se tiene una definición completa en la magnitud de

  12. Determinantes de las importaciones en Colombia: un análisis econométrico

    Microsoft Academic Search

    Leonardo Villar

    1985-01-01

    El presente trabajo tiene el propósito de estudiar algunos aspectos relacionados con la evolución de las importaciones colombianas y con los vínculos de dicha evolución con la formación de capital, con la acumulación de inventarios de las empresas y con la producción industrial. Los análisis se realizan mediante estimaciones econométricas, utilizando variantes de funciones tradicionales de demanda de importaciones; esto

  13. University of Nevada, Las Vegas Faculty Senate Constitution

    E-print Network

    Hemmers, Oliver

    of Nevada and the United States. Section 2. Membership All academic faculty and professional staff who holdUniversity of Nevada, Las Vegas Faculty Senate Constitution Revised January 2009 Section 1 of Nevada, Las Vegas; the Nevada System of Higher Education Code; and the laws and the statutes of the State

  14. NIU 2014 LA&S Summer Academic Camps APPLICATION FORM

    E-print Network

    Kostic, Milivoje M.

    NIU 2014 LA&S Summer Academic Camps APPLICATION FORM (Submit a separate form for each camper.niu.edu/disability; participants are responsible for any non-credit accommodation charges.) #12;NIU 2014 LA&S Summer Academic Camps all the materials; see the checklist on page 2. I will be attending: Creative Writing Camp Speech Camp

  15. The Arabidopsis Nuclear Pore and Nuclear Envelope

    PubMed Central

    Meier, Iris; Brkljacic, Jelena

    2010-01-01

    The nuclear envelope is a double membrane structure that separates the eukaryotic cytoplasm from the nucleoplasm. The nuclear pores embedded in the nuclear envelope are the sole gateways for macromolecular trafficking in and out of the nucleus. The nuclear pore complexes assembled at the nuclear pores are large protein conglomerates composed of multiple units of about 30 different nucleoporins. Proteins and RNAs traffic through the nuclear pore complexes, enabled by the interacting activities of nuclear transport receptors, nucleoporins, and elements of the Ran GTPase cycle. In addition to directional and possibly selective protein and RNA nuclear import and export, the nuclear pore gains increasing prominence as a spatial organizer of cellular processes, such as sumoylation and desumoylation. Individual nucleoporins and whole nuclear pore subcomplexes traffic to specific mitotic locations and have mitotic functions, for example at the kinetochores, in spindle assembly, and in conjunction with the checkpoints. Mutants of nucleoporin genes and genes of nuclear transport components lead to a wide array of defects from human diseases to compromised plant defense responses. The nuclear envelope acts as a repository of calcium, and its inner membrane is populated by functionally unique proteins connected to both chromatin and—through the nuclear envelope lumen—the cytoplasmic cytoskeleton. Plant nuclear pore and nuclear envelope research—predominantly focusing on Arabidopsis as a model—is discovering both similarities and surprisingly unique aspects compared to the more mature model systems. This chapter gives an overview of our current knowledge in the field and of exciting areas awaiting further exploration. PMID:22303264

  16. Nuclear reactor

    DOEpatents

    Thomson, Wallace B. (Severna Park, MD)

    2004-03-16

    A nuclear reactor comprising a cylindrical pressure vessel, an elongated annular core centrally disposed within and spaced from the pressure vessel, and a plurality of ducts disposed longitudinally of the pressure vessel about the periphery thereof, said core comprising an annular active portion, an annular reflector just inside the active portion, and an annular reflector just outside the active a portion, said annular active portion comprising rectangular slab, porous fuel elements radially disposed around the inner reflector and extending the length of the active portion, wedge-shaped, porous moderator elements disposed adjacent one face of each fuel element and extending the length of the fuel element, the fuel and moderator elements being oriented so that the fuel elements face each other and the moderator elements do likewise, adjacent moderator elements being spaced to provide air inlet channels, and adjacent fuel elements being spaced to provide air outlet channels which communicate with the interior of the peripheral ducts, and means for introducing air into the air inlet channels which passes through the porous moderator elements and porous fuel elements to the outlet channel.

  17. Nuclear Power in China

    NASA Astrophysics Data System (ADS)

    Zhou, Yun

    2012-02-01

    In response to the Fukushima accident, China is strengthening its nuclear safety at reactors in operation, under construction and in preparation, including efforts to improve nuclear safety regulations and guidelines based on lessons learned from the accident. Although China is one of the major contributors in the global nuclear expansion, China's nuclear power industry is relatively young. Its nuclear safety regulators are less experienced compared to those in other major nuclear power countries. To realize China's resolute commitment to rapid growth of safe nuclear energy, detailed analyses of its nuclear safety regulatory system are required. This talk explains China's nuclear energy program and policy at first. It also explores China's governmental activities and future nuclear development after Fukushima accidents. At last, an overview of China's nuclear safety regulations and practices are provided. Issues and challenges are also identified for police makers, regulators, and industry professionals.

  18. LA CONSTRUCCIÓN DE LA ARQUITECTURA ORGANIZATIVA EN LAS ENTIDADES SIN FINES DE LUCRO. EL CASO DE LAS ONGD EN ESPAÑA

    Microsoft Academic Search

    V. Martín Pérez; N. Martín Cruz; J. Hernangómez Barahona

    2008-01-01

    El objetivo del presente trabajo es valorar el equilibrio de las fuerzas organizativas en la construcción de una arquitectura organizativa eficiente y, todo ello, bajo un enfoque de agencia. Los resultados del análisis empírico, llevado a cabo en las más importantes ONGD españolas durante el año 2003, ponen de relieve la gran importancia de la influencia mutua de la delegación

  19. LAS - LAND ANALYSIS SYSTEM, VERSION 5.0

    NASA Technical Reports Server (NTRS)

    Pease, P. B.

    1994-01-01

    The Land Analysis System (LAS) is an image analysis system designed to manipulate and analyze digital data in raster format and provide the user with a wide spectrum of functions and statistical tools for analysis. LAS offers these features under VMS with optional image display capabilities for IVAS and other display devices as well as the X-Windows environment. LAS provides a flexible framework for algorithm development as well as for the processing and analysis of image data. Users may choose between mouse-driven commands or the traditional command line input mode. LAS functions include supervised and unsupervised image classification, film product generation, geometric registration, image repair, radiometric correction and image statistical analysis. Data files accepted by LAS include formats such as Multi-Spectral Scanner (MSS), Thematic Mapper (TM) and Advanced Very High Resolution Radiometer (AVHRR). The enhanced geometric registration package now includes both image to image and map to map transformations. The over 200 LAS functions fall into image processing scenario categories which include: arithmetic and logical functions, data transformations, fourier transforms, geometric registration, hard copy output, image restoration, intensity transformation, multispectral and statistical analysis, file transfer, tape profiling and file management among others. Internal improvements to the LAS code have eliminated the VAX VMS dependencies and improved overall system performance. The maximum LAS image size has been increased to 20,000 lines by 20,000 samples with a maximum of 256 bands per image. The catalog management system used in earlier versions of LAS has been replaced by a more streamlined and maintenance-free method of file management. This system is not dependent on VAX/VMS and relies on file naming conventions alone to allow the use of identical LAS file names on different operating systems. While the LAS code has been improved, the original capabilities of the system have been preserved. These include maintaining associated image history, session logging, and batch, asynchronous and interactive mode of operation. The LAS application programs are integrated under version 4.1 of an interface called the Transportable Applications Executive (TAE). TAE 4.1 has four modes of user interaction: menu, direct command, tutor (or help), and dynamic tutor. In addition TAE 4.1 allows the operation of LAS functions using mouse-driven commands under the TAE-Facelift environment provided with TAE 4.1. These modes of operation allow users, from the beginner to the expert, to exercise specific application options. LAS is written in C-language and FORTRAN 77 for use with DEC VAX computers running VMS with approximately 16Mb of physical memory. This program runs under TAE 4.1. Since TAE 4.1 is not a current version of TAE, TAE 4.1 is included within the LAS distribution. Approximately 130,000 blocks (65Mb) of disk storage space are necessary to store the source code and files generated by the installation procedure for LAS and 44,000 blocks (22Mb) of disk storage space are necessary for TAE 4.1 installation. The only other dependencies for LAS are the subroutine libraries for the specific display device(s) that will be used with LAS/DMS (e.g. X-Windows and/or IVAS). The standard distribution medium for LAS is a set of two 9track 6250 BPI magnetic tapes in DEC VAX BACKUP format. It is also available on a set of two TK50 tape cartridges in DEC VAX BACKUP format. This program was developed in 1986 and last updated in 1992.

  20. US nuclear weapons policy

    Microsoft Academic Search

    1990-01-01

    We are closing chapter one'' of the nuclear age. Whatever happens to the Soviet Union and to Europe, some of the major determinants of nuclear policy will not be what they have been for the last forty-five years. Part of the task for US nuclear weapons policy is to adapt its nuclear forces and the oganizations managing them to the

  1. Nuclear Magnetic Resonance

    NASA Astrophysics Data System (ADS)

    Andrew, E. R.

    2009-06-01

    Author's preface; 1. Introduction; 2. Basic theory; 3. Experimental methods; 4. Measurement of nuclear properties and general physical applications; 5. Nuclear magnetic resonance in liquids and gases; 6. Nuclear magnetic resonance in non-metallic solids; 7. Nuclear magnetic resonance in metals; 8. Quadrupole effects; Appendices 1-6; Glossary of symbols; Bibliography and author index; Subject index.

  2. Nuclear Science & Engineering

    E-print Network

    . 1 Nuclear Science & Engineering Nuclear Energy Present and Future Ian H. Hutchinson Head, Department of Nuclear Science and Engineering CoPrincipal, Alcator Tokamak Project, Plasma Science and Fusion Science & Engineering Nuclear Power Plants Worldwide · US: 103 plants in operation, none under

  3. Nuclear energy and security

    SciTech Connect

    BLEJWAS,THOMAS E.; SANDERS,THOMAS L.; EAGAN,ROBERT J.; BAKER,ARNOLD B.

    2000-01-01

    Nuclear power is an important and, the authors believe, essential component of a secure nuclear future. Although nuclear fuel cycles create materials that have some potential for use in nuclear weapons, with appropriate fuel cycles, nuclear power could reduce rather than increase real proliferation risk worldwide. Future fuel cycles could be designed to avoid plutonium production, generate minimal amounts of plutonium in proliferation-resistant amounts or configurations, and/or transparently and efficiently consume plutonium already created. Furthermore, a strong and viable US nuclear infrastructure, of which nuclear power is a large element, is essential if the US is to maintain a leadership or even participatory role in defining the global nuclear infrastructure and controlling the proliferation of nuclear weapons. By focusing on new fuel cycles and new reactor technologies, it is possible to advantageously burn and reduce nuclear materials that could be used for nuclear weapons rather than increase and/or dispose of these materials. Thus, the authors suggest that planners for a secure nuclear future use technology to design an ideal future. In this future, nuclear power creates large amounts of virtually atmospherically clean energy while significantly lowering the threat of proliferation through the thoughtful use, physical security, and agreed-upon transparency of nuclear materials. The authors must develop options for policy makers that bring them as close as practical to this ideal. Just as Atoms for Peace became the ideal for the first nuclear century, they see a potential nuclear future that contributes significantly to power for peace and prosperity.

  4. Nuclear Reaction Data Centers

    SciTech Connect

    McLane, V.; Nordborg, C.; Lemmel, H.D.; Manokhin, V.N.

    1988-01-01

    The cooperating Nuclear Reaction Data Centers are involved in the compilation and exchange of nuclear reaction data for incident neutrons, charged particles and photons. Individual centers may also have services in other areas, e.g., evaluated data, nuclear structure and decay data, reactor physics, nuclear safety; some of this information may also be exchanged between interested centers. 20 refs., 1 tab.

  5. Nuclear Smuggling Incidents

    NSDL National Science Digital Library

    Christopher Griffith

    Since the early 1990s, there have been numerous reports of illicit trafficking in many types of nuclear materials worldwide. According to IAEA, nuclear materials include nuclear source material, such as natural uranium, depleted uranium, thorium, plutonium, and uranium enriched in the isotopes U-233 or U-235. This section explores how nuclear materials have been smuggled around the world.

  6. Nuclear collective dynamics

    Microsoft Academic Search

    D. Bucurescu; V. Ceausescu; N. V. Zamfir

    1983-01-01

    Topics discussed in this International Summer School of Nuclear Physics include time dependent and Hartree-Fock methods in quantum mechanics and nuclear models; angular momentum, high spin states, giant resonance, nuclear deformation, collective model and excitations; nuclear molecules; heavy ion reactions; fission reactions; and inertial confinement.

  7. Nuclear air cushion vehicles

    NASA Technical Reports Server (NTRS)

    Anderson, J. L.

    1973-01-01

    The state-of-the-art of the still-conceptual nuclear air cushion vehicle, particularly the nuclear powerplant is identified. Using mission studies and cost estimates, some of the advantages of nuclear power for large air cushion vehicles are described. The technology studies on mobile nuclear powerplants and conceptual ACV systems/missions studies are summarized.

  8. Topics in Nuclear Astrophysics

    SciTech Connect

    Iliadis, Christian [Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

    2010-11-24

    We will discuss the basic ideas regarding nuclear processes occurring in stars. We start from stellar observations, will then elaborate on important quantum-mechanical phenomena governing nuclear reactions, continue with how nuclear reactions proceed in a hot stellar plasma and, finally, we will provide an overview of stellar burning stages. This lecture is directed towards the student of nuclear astrophysics.

  9. Revitalizing Nuclear Safety Research.

    ERIC Educational Resources Information Center

    National Academy of Sciences - National Research Council, Washington, DC.

    This report covers the general issues involved in nuclear safety research and points out the areas needing detailed consideration. Topics included are: (1) "Principles of Nuclear Safety Research" (examining who should fund, who should conduct, and who should set the agenda for nuclear safety research); (2) "Elements of a Future Agenda for Nuclear…

  10. The New Nuclear Nations.

    ERIC Educational Resources Information Center

    Spector, Leonard S.

    1990-01-01

    Explores the issue of nuclear proliferation, noting that the countries with nuclear capability now include Israel, South Africa, India, and Pakistan. Describes the role and problems of the United States in halting nuclearization. Supplies charts, maps, and information concerning the state of nuclear capability in each country. (NL)

  11. Terrorists and Nuclear Technology

    ERIC Educational Resources Information Center

    Krieger, David

    1975-01-01

    This essay explores the ways terrorist groups may gain possession of nuclear materials; the way in which they may use nuclear weapons and other nuclear technologies to their benefit; and various courses of action designed to minimize the possibilities of terrorists utilizing nuclear technology to their benefit and society's detriment. (BT)

  12. El fenotipo de las mucinas en el esófago de Barrett

    PubMed Central

    Torrado, Julio; Piazuelo, María Blanca; Ruiz, Irune; Izarzugaza, María Isabel; Camargo, María Constanza; Delgado, Alberto; Abdirad, Afshin; Correa, Pelayo

    2011-01-01

    Antecedentes El esófago de Barrett es una reconocida lesión precursora de adenocarcinoma esofágico. Aunque generalmente asociada al reflujo gastroesofágico, los mecanismos patogénicos de la enfermedad no son bien conocidos. El objetivo del presente estudio es explorar la historia natural e identificar marcadores de progreso del proceso precanceroso. Material y métodos Se utilizaron cortes histológicos de 67 especímenes de esófago correspondientes a 14 pacientes con esófago de Barrett, a los que se siguió entre 1 – 9 años. Se clasificaron las lesiones en: esófago de Barrett sin displasia, indefinido para displasia o con displasia. Se evaluó la expresión de diferentes mucinas en las células caliciformes y en las columnares usando técnicas de histoquímica e inmunohistoquímica. Resultados En todos los casos se comprobó la presencia de metaplasia intestinal incompleta. Las células columnares dentro del epitelio metaplásico contenían mucinas neutras. A mayor severidad de la lesión se encontró significativamente menor expresión de sialomucinas en las células columnares (p de tendencia igual a 0,03). En sujetos con lesiones indefinidas para displasia se observó un mayor contenido de sulfomucinas en las células caliciformes (p=0,034) y de MUC2 en las células columnares (p=0,029) que en sujetos con esófago de Barrett sin displasia. Se observó expresión de la mucina intestinal MUC2 y de la mucina gástrica MUC5AC en todas las muestras. MUC6, una mucina de las glándulas profundas gástricas, se presentó ocasionalmente. Conclusión La evaluación de los perfiles de mucinas en el esófago de Barrett sugiere una transición gradual del fenotipo del epitelio metaplásico a medida que la lesión avanza en el tiempo. PMID:21804831

  13. Airborne Validation of Active CO2 LAS Measurements

    NASA Astrophysics Data System (ADS)

    Browell, E. V.; Dobler, J.; Kooi, S.; Choi, Y.; Harrison, F.; Moore, B.; Zaccheo, T.

    2009-12-01

    A unique, multi-frequency, single-beam, laser absorption spectrometer (LAS) that operates at 1.57 ?m has been developed for a future space-based mission to determine the global distribution of sources and sinks of atmospheric carbon dioxide (CO2). A prototype of the space-based LAS system was developed by ITT, and it has been successfully flight tested in seven airborne campaigns conducted in different geographic regions over the last four years. Flight tests were conducted over Oklahoma, Michigan, New Hampshire, and Virginia under a wide range of atmospheric conditions. Remote LAS measurements were compared to high-quality in situ measurements obtained from instrumentation on the same aircraft on spirals under the ground track of the LAS. LAS flights were conducted over a wide range of land and water reflectances and in the presence of scattered clouds. An extensive data set of CO2 measurements has been obtained for evaluating the LAS performance. These LAS test flights resulted in the first demonstration of high-precision, high-accuracy, remote laser measurements of CO2 from an airborne platform. The LAS CO2 column measurements were found to have a precision for a 10-s horizontal average (~1 km) of better than 1 ppm of CO2 over land and 1.3 ppm over water. Absolute comparisons of CO2 remote and in situ measurements showed agreement on average to better than 0.5 ppm of CO2 with a standard deviation of the agreement to better than 2 ppm of CO2. In addition, results of recent coordinated aircraft flight tests of different CO2 LAS systems and different in situ CO2 measurement systems over Oklahoma and Virginia in July-August 2009 are also discussed in this paper.

  14. Controlling nuclear proliferation

    Microsoft Academic Search

    1981-01-01

    Nuclear non-proliferation policy depends on the 1968 Non-Proliferation Treaty, in which countries promise not to acquire nuclear weapons in exchange for open access to peaceful nuclear technology, and a system of international safeguards that are imposed on exported nuclear equipment and facilities operated by parties to the treaty. Critics have feared all along that non-nuclear countries might circumvent or exploit

  15. The Land Analysis System (LAS) for multispectral image processing

    USGS Publications Warehouse

    Wharton, S. W.; Lu, Y. C.; Quirk, Bruce K.; Oleson, Lyndon R.; Newcomer, J. A.; Irani, Frederick M.

    1988-01-01

    The Land Analysis System (LAS) is an interactive software system available in the public domain for the analysis, display, and management of multispectral and other digital image data. LAS provides over 240 applications functions and utilities, a flexible user interface, complete online and hard-copy documentation, extensive image-data file management, reformatting, conversion utilities, and high-level device independent access to image display hardware. The authors summarize the capabilities of the current release of LAS (version 4.0) and discuss plans for future development. Particular emphasis is given to the issue of system portability and the importance of removing and/or isolating hardware and software dependencies.

  16. Wintertime aerosol in Las Vegas, Nevada

    NASA Astrophysics Data System (ADS)

    Brown, Steven G.

    Numerous studies have found adverse health effects in subjects who live next to major roadways due to air pollution; in particular, there can be severe impacts on lung function and development in children living and/or attending school next to major roadways due to their exposure to air pollutants, including particulate matter (PM) or aerosol. The composition of aerosol at an elementary school next to a major freeway in Las Vegas, Nevada during winter 2008 was measured using a suite of measurements. An Aerodyne High Resolution Aerosol Mass Spectrometer (HR-AMS) was used to quantify the composition of non-refractory PM1 aerosol, including organic matter (OM); an Aethalometer was used to quantify black carbon (BC); a Sunset OCEC analyzer was used to measure organic and elemental carbon (OC, EC); and a particle-into-liquid system (PILS) coupled to two ion chromatographs (IC) was used to measure fine particle ions. Hi-volume PM2.5 samplers were used to collect aerosol on quartz fiber filters at between 2 and 24 hour intervals during the study, a subset of which were analyzed for PAHs and the biomass burning tracer levoglucosan. Data were analyzed by positive matrix factorization (PMF) to determine the amount of fresh, hydrocarbon-like organic aerosol (HOA), more oxidized OA (low-volatility and semi-volatile OA [LV-OOA, SV-OOA]) and biomass burning OA (BBOA). PM1 aerosol was predominantly carbonaceous, with OM plus BC accounting for 74% of the overall average 6.9 mug/m3 of PM measured. BC had a diurnal pattern similar to traffic volume, while OM was higher in the evening compared to the morning. OM was a mixture of fresh HOA, urban- and regional-scale OOA, and BBOA; in the evening, SV-OOA and BBOA peaked, while HOA concentrations were on average the same in the morning and evening, similar to BC. OM/OC ratios were low (1.52 +/-0.14 on average) during the morning rush hour (average OM = 2.4 mug/m3) when vehicular emissions dominate this near-road measurement site, and even lower (1.46 +/- 0.10) in the evening (average OM=6.3 mug/m3), when a combination of vehicular and fresh residential biomass burning emissions was typically present during a period characterized by strong atmospheric stability. While nitrate and sulfate had size distributions typical of secondary species with a sharp peak in particle diameter between 400 nm and 500 nm, OM had a broader distribution between 100 nm and 400 nm diameter particles, reflecting its combination of fresh, smaller particles and aged, larger particles. OM concentrations were on average similar between periods when the sampling site was upwind and downwind of the freeway, though during the morning OM concentrations were higher under downwind conditions, as was the fraction of HOA.

  17. Evolution of Nuclear Spectra with Nuclear Forces

    E-print Network

    R. B. Wiringa; Steven C. Pieper

    2002-07-16

    We first define a series of NN interaction models ranging from very simple to fully realistic. We then present Green's function Monte Carlo calculations of light nuclei to show how nuclear spectra evolve as the nuclear forces are made increasingly sophisticated. We find that the absence of stable five- and eight-body nuclei depends crucially on the spin, isospin, and tensor components of the nuclear force.

  18. An Aerial Radiological Survey of Selected Areas of the City of North Las Vegas

    SciTech Connect

    Piotr Wasiolek

    2008-06-01

    As part of the proficiency training for the Radiological Mapping mission of the Aerial Measuring System (AMS), a survey team from the Remote Sensing Laboratory-Nellis (RSL-Nellis) conducted an aerial radiological survey of selected areas of the city of North Las Vegas for the purpose of mapping natural radiation background and locating any man-made radioactive sources. Survey areas were selected in collaboration with the City Manager's office and included four separate areas: (1) Las Vegas Motor Speedway (10.6 square miles); (2) North Las Vegas Downtown Area (9.2 square miles); (3) I-15 Industrial Corridor (7.4 square miles); and (4) Future site of University of Nevada Las Vegas campus (17.4 square miles). The survey was conducted in three phases: Phase 1 on December 11-12, 2007 (Areas 1 and 2), Phase 2 on February 28, 2008 (Area 3), and Phase 3 on March 19, 2008 (Area 4). The total completed survey covered a total of 44.6 square miles. The flight lines (without the turns) over the surveyed areas are presented in Figures 1, 2, 3, and 4. A total of eight 2.5-hour-long flights were performed at an altitude of 150 ft above ground level (AGL) with 300 feet of flight-line spacing. Water line and test line flights were conducted over the Lake Mead and Government Wash areas to ensure quality control of the data. The data were collected by the AMS data acquisition system (REDAR V) using an array of twelve 2-inch x 4-inch x 16-inch sodium iodide (NaI) detectors flown on-board a twin-engine Bell 412 helicopter. Data, in the form of gamma energy spectra, were collected continually (every second) over the course of the survey and were geo-referenced using a differential Global Positioning System. Collection of spectral data allows the system to distinguish between ordinary fluctuations in natural background radiation levels and the signature produced by man-made radioisotopes. Spectral data can also be used to identify specific radioactive isotopes. As a courtesy service, with the approval of the U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office, RSL-Nellis is providing this summary to the office of the Mayor of the City of North Las Vegas along with the gross-count-based exposure rate and man-made count contour maps and GIS shape files in electronic format on a compact disk.

  19. Environmental behavior of linear alkylbenzene sulfonate (LAS) in aquatic ecosystem

    NASA Astrophysics Data System (ADS)

    Zhang, Yongyuan; Tan, Yuyun; Korte, F.

    1991-03-01

    LAS degradation rate in Donghu Lake water under aerobic was much faster than under anaerobic condition. The half life of LAS in aerobic and anaerobic environment was 3.2 days and 57 days, respectively. The degradation rate at 25 27°C was approximately 20 times higher than that at 1.5 3.5 °C. In a laboratory model aquatic ecosystem, two stages of bioconcentration in fish, daphnia and snail were observed. The first stage, on second day exposure, resulted from accumulation of intact LAS, and the second stage, on 16th day exposure, was due to metabolites. The bioconcentration factor (BCF) of LAS was extremely low in the muscle of hybrid carp (0.64), but rather high (2485) in the gall bladder.

  20. School of ALLIED HEALTH UNIVERSITY OF NEVADA, LAS VEGAS

    E-print Network

    Hemmers, Oliver

    NURSING School of ALLIED HEALTH SCIENCES UNIVERSITY OF NEVADA, LAS VEGAS Schools of Nursing and Allied Health Sciences RESEAR CH #12;NURSING School of ALLIED HEALTH SCIENCES #12;NURSING School of ALLIED HEALTH SCIENCES Table of Contents Current Research

  1. Wastewater treatment in Las Vegas, Santa Barbara, Honduras

    E-print Network

    Hodge, Matthew M

    2008-01-01

    The Municipality of Las Vegas, Honduras is located immediately to the west of Lake Yojoa, the largest inland lake in Honduras. Beginning in 2005, the Massachusetts Institute of Technology (MIT) began working with stakeholders ...

  2. Las corporaciones autonomas regionales del caribe colombiano: Un analisis de sus finanzas y gobierno corporativo

    Microsoft Academic Search

    Joaquin Viloria de la Hoz

    2011-01-01

    Las Corporaciones Autónomas Regionales (car) y las Corporaciones de Desarrollo Sostenible (cds) son las instituciones encargadas de la protección del medio ambiente en Colombia. Este trabajo estudia el desempeño de las corporaciones que tienen jurisdicción sobre la Costa Caribe. En particular, examina sus principales fortalezas y limitaciones administrativas, y analiza si en sus presupuestos se reproducen las desigualdades regionales que

  3. An overview of the Land Analysis System (LAS)

    NASA Technical Reports Server (NTRS)

    Lu, Yun-Chi

    1986-01-01

    An outline covering the history, development methodology, and major hardware/software components of the Land Analysis System (LAS) is presented. System support services including the Transportable Applications Executive (TAE), Catalog Manager, history files, and applications services are briefly described along with the general functional capabilities of the 224 available applications programs. Example interface menus are given and desired enhancements to the LAS system are listed.

  4. Compact Groups of Galaxies in the Las Campanas Redshift Survey

    E-print Network

    S. S. Allam; D. L. Tucker

    2000-06-12

    We have recently extracted a catalog of compact groups of galaxies (CGs) from the Las Campanas Redshift Survey. This catalog of Las Campanas Compact Groups (LCCGs) contains 76 CGs with a median redshift of z_med = 0.08. The physical properties of these CGs are similar to those from the Hickson (1982) and the Barton et al. (1996) catalogs. Here, we present an atlas of our catalog and briefly describe its general properties.

  5. LAS VEGAS--A SHOWCASE FOR AUTOMATED PEOPLE MOVER TECHNOLOGY

    Microsoft Academic Search

    E S Neumann

    1999-01-01

    It is not widely known, but Las Vegas, Nevada, is home to a relatively large number of small scale Automated People Mover (APM) systems that serve the internal site-circulation needs of resorts. In fact, Las Vegas may be considered the birthplace of contemporary, low-cost, cable-propelled systems designed specifically to serve urban needs in North America. The distinctive feature of a

  6. Las neuronas de la conciencia Rodrigo Quian Quiroga

    E-print Network

    : Neurociencia, Psicología. Etiquetas: conciencia, células de la abuela, percepción visual, neurofisiología. El una de las preguntas más interesantes en neurociencia: ¿cómo codifican las neuronas en el cerebro todo más instruido en neurociencia, ¡es fascinante! El mismo Crick no se limitó solamente a tratar de

  7. Las últimas obras de Usigli: Efebocracia o gerontocracia.

    E-print Network

    Rodrí guez-Seda, Asela

    1974-10-01

    FALL 1974 45 Las últimas obras de Usigli: Efebocracia o gerontocracia? ÁSELA RODRÍGUEZ-SEDA Las promociones más recientes de autores teatrales mexicanos le han objetado a Rodolfo Usigli la creación de lo que ellos consideran un teatro viejo y... reprocharle su comportamiento por haber abandonado la sala de teatro antes de finalizar una obra suya, y por haber escrito una denigrante crítica teatral, le sirve a Usigli para presentar un tenso y dramático confron- tamiento entre dos actitudes ante la...

  8. Seismic Wave Amplification in Las Vegas: Site Response and Empirical Estimates of Ground Motion

    NASA Astrophysics Data System (ADS)

    Rodgers, A.; McCallen, D.; Tkalcic, H.; Wagoner, J.; Louie, J.; Anderson, J.; Luke, B.; Snelson, C.; Taylor, W.

    2004-12-01

    This presentation will summarize a multidisciplinary effort to understand seismic wave amplification in Las Vegas Valley. The project involves weak motion recording and analysis, geotechnical and seismic refraction field studies, geologic and lithologic interpretation and model building. We will provide a brief overview of the project, then focus on specifics of seismic wave amplification including observations and interpretations. We analyzed recordings of nuclear explosions from the Nevada Test Site (NTS) and regional earthquakes to estimate site response in Las Vegas. An empirical transfer function method was used to transform ground motion time-series at one (reference) station to other stations, using frequency dependent site response curves in the band 0.2-5.0 Hz. The method transforms the time-series to the frequency domain by Fast Fourier transform, multiplies the amplitude spectrum by the site response curve and inverse FFT's back to the time domain. The approach is validated by the ability to predict horizontal component S-wave ground motion measures, such as peak and rms ground velocities and accelerations. We then can provide empirical estimates of ground motion for a wider distribution of sites in Las Vegas. Frequency dependent amplifications (site response) and peak ground motions are strongly correlated with measures of shallow shear-wave (geotechnical) velocities. Details of the geotechnical measurements and models will be presented in a companion presentation. This work was performed under the auspices of the U.S. Department of Energy by University of California Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48.

  9. An Aerial Radiological Survey of the City of North Las Vegas (Downtown) and the Motor Speedway

    SciTech Connect

    Piotr Wasiolek

    2007-12-01

    As part of the proficiency training for the Radiological Mapping mission of the Aerial Measuring System (AMS), a survey team from the Remote Sensing Laboratory-Nellis (RSL-Nellis) conducted an aerial radiological survey on December 11-12, 2007, with the purpose of mapping natural radiation background and locating any man-made radioactive sources. The survey covered 19.4 square miles (9.2 square miles over the downtown area of the City of North Las Vegas and 10.2 square miles over the Las Vegas Motor Speedway [LVMS]). The flight lines over the surveyed areas are presented in Figures 1 and 2. A total of four 2.5-hour-long flights were performed at an altitude of 150 ft above ground level (AGL) with 300 ft of flight line spacing. Water line and test line flights were conducted over the Lake Mead and Government Wash areas to ensure quality control of the data. The data were collected by the AMS data acquisition system-REDAR V using an array of twelve 2-inch x 4-inch x 16-inch sodium iodide (NaI) detectors flown on-board a twin-engine Bell 412 helicopter. Data in the form of gamma energy spectra were collected continually (every second) over the course of the survey and were geo-referenced using a differential Global Positioning System. Collection of spectral data allows the system to distinguish between ordinary fluctuations in natural background radiation levels and the signature produced by man-made radioisotopes sources. Spectral data can also be used to identify specific radioactive isotopes. As a courtesy service with the approval of the U.S. Department of Energy, National Nuclear Security Administration, Nevada Site Office, RSL-Nellis is providing this summary to the office of the Mayor of City of North Las Vegas and LVMS security along with the gross counts-based exposure rate and man-made counts maps.

  10. Climate Change, Nuclear Power and Nuclear

    E-print Network

    Climate Change, Nuclear Power and Nuclear Proliferation: Magnitude Matters Rob Goldston MIT IAP plays a large role in replacing coal red plants. al hydro electricity options penetrate in the climate way across scenarios, showing a slight severe climate targets. In Industry, the climate target has

  11. Nuclear weapons, nuclear strategy, and law

    Microsoft Academic Search

    Almond; H. H. Jr

    2009-01-01

    Fried (Denver J Int. Law and Policy, V. 14, p 97 (1985)) asserted that international law establishes the illegality of nuclear weapons as illegal per se; i.e., that nuclear weapons are not permissible regardless of use. The author responds to Fried's essay by making the following argument. First, an analysis of international law and specifically, the law of war, shows

  12. Resumen--Las recientes modificaciones legales al mercado de generacin elctrico en Chile, introducidas mediante las leyes N

    E-print Network

    Dixon, Juan

    1 Resumen-- Las recientes modificaciones legales al mercado de generación eléctrico en Chile inserción de sistemas de generación eólica en Chile. Se evalúa financieramente un proyecto de 8,5 MW, Chile se encuentra en un proceso de revisión de la política de neutralidad en el que se desenvuelven las

  13. Poltica energtica y visin de futuro en Chile: Rol de las redesen Chile: Rol de las redes

    E-print Network

    Catholic University of Chile (Universidad Católica de Chile)

    Política energética y visión de futuro en Chile: Rol de las redesen Chile: Rol de las redes;La metodología de expansión de la transmisión en aplicación en Chile no está reconociendo y en Chile. Exponer los desafíos presentes en el proceso de expansión del sistema troncal en Chile

  14. INTRAVAL Phase 2: Modeling testing at the Las Cruces Trench Site

    SciTech Connect

    Hills, R.G. [New Mexico State Univ., Las Cruces, NM (United States). Dept. of Mechanical Engineering; Wierenga, P.J. [Arizona Univ., Tucson, AZ (United States). Dept. of Soil and Water Science; Luis, S.; McLaughlin, D. [Massachusetts Inst. of Tech., Cambridge, MA (United States); Rockhold, M. [Pacific Northwest Lab., Richland, WA (United States); Xiang, J.; Scanlon, B. [Texas Univ., Austin, TX (United States). Bureau of Economic Geology; Wittmeyer, G. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

    1994-01-01

    Several field experiments have been performed by scientists from the University of Arizona and New Mexico State University at the Las Cruces Trench Site to provide data tc test deterministic and stochastic models for water flow and solute transport. These experiments were performed in collaboration with INTRAVAL, an international effort toward validation of geosphere models for the transport of radionuclides. During Phase I of INTRAVAL, qualitative comparisons between experimental data and model predictions were made using contour plots of water contents and solute concentrations. Detailed quantitative comparisons were not made. To provide data for more rigorous model testing, a third Las Cruces Trench experiment was designed by scientists from the University of Arizona and New Mexico State University. Modelers from the Center for Nuclear Waste Regulatory Analysis, Massachusetts Institute of Technology, New Mexico State University, Pacific Northwest Laboratory, and the University of Texas provided predictions of water flow and tritium transport to New Mexico State University for analysis. The corresponding models assumed soil characterizations ranging from uniform to deterministically heterogeneous to stochastic. This report presents detailed quantitative comparisons to field data.

  15. Nuclear Renaissance Requires Nuclear Enlightenment W J Nuttall

    E-print Network

    Aickelin, Uwe

    . The synergies between nuclear weapons development, naval propulsion sNuclear Renaissance Requires Nuclear Enlightenment W J Nuttall Judge Business School, Cambridge University, Trumpington Street Cambridge, CB2 1AG UK Abstract Nuclear energy was developed by technocratic

  16. Nuclear radiation actuated valve

    DOEpatents

    Christiansen, David W. (Kennewick, WA); Schively, Dixon P. (Richland, WA)

    1985-01-01

    A nuclear radiation actuated valve for a nuclear reactor. The valve has a valve first part (such as a valve rod with piston) and a valve second part (such as a valve tube surrounding the valve rod, with the valve tube having side slots surrounding the piston). Both valve parts have known nuclear radiation swelling characteristics. The valve's first part is positioned to receive nuclear radiation from the nuclear reactor's fuel region. The valve's second part is positioned so that its nuclear radiation induced swelling is different from that of the valve's first part. The valve's second part also is positioned so that the valve's first and second parts create a valve orifice which changes in size due to the different nuclear radiation caused swelling of the valve's first part compared to the valve's second part. The valve may be used in a nuclear reactor's core coolant system.

  17. What Is Nuclear Medicine?

    MedlinePLUS

    ... medical procedures. What is radiation? Cosmic Radiation Sun Earth Atmosphere + + + + + - - - - - 4 How many nuclear medicine procedures are ... anywhere from a few hours to a few days after your nuclear medicine study. For many therapy ...

  18. Nuclear Structure Graphical Software

    Microsoft Academic Search

    Norman D. Cook; Takefumi Hayashi

    1998-01-01

    We have developed a nuclear software package for visualization of nuclei. It displays nuclei in several static and dynamic modes, corresponding to various known phenomena\\/substructures in nuclear theory. These include the \\

  19. RBC nuclear scan

    MedlinePLUS

    An RBC nuclear scan uses small amounts of radioactive material to mark (tag) red blood cells (RBCs). Your body is then ... radiation -- it does not give off radiation. Most nuclear scans (including an RBC scan) are not recommended ...

  20. Nuclear stress test

    MedlinePLUS

    ... Persantine stress test; Thallium stress test; Stress test - nuclear; Adenosine stress test; Regadenoson stress test ... Thallium stress test is a nuclear imaging method that shows how well blood flows into the heart muscle, both at rest and during activity.

  1. Triangle Universities Nuclear Laboratory

    SciTech Connect

    Not Available

    1991-01-01

    This report contains brief papers that discusses the following topics: Fundamental Symmetries in the Nucleus; Internucleon Interactions; Dynamics of Very Light Nuclei; Facets of the Nuclear Many-Body Problem; and Nuclear Instruments and Methods.

  2. Hegemony and nuclear proliferation

    E-print Network

    Miller, Nicholas L. (Nicholas LeSuer)

    2014-01-01

    Contrary to longstanding of predictions of nuclear tipping points, the number of states interested in nuclear weapons has sharply declined in recent decades. In contrast to existing explanations, this dissertation argues ...

  3. Nuclear materials in Japan

    NASA Astrophysics Data System (ADS)

    2015-03-01

    The incident at Fukushima Daiichi brought materials in the nuclear industry into the spotlight. Nature Materials talks to Tatsuo Shikama, Director of the International Research Centre for Nuclear Materials, Institute for Materials Research, Tohoku University, about the current situation.

  4. FAQs: Japan Nuclear Concerns

    MedlinePLUS

    ... of Japan? During the early phase of the nuclear emergency radiation-related health were dependant on exposure, which is ... material released into the atmosphere from the Japanese nuclear power plants. Radiation levels measured to date in other countries are ...

  5. Teaching "The Nuclear Predicament."

    ERIC Educational Resources Information Center

    Carman, Philip; Kneeshaw, Stephen

    1987-01-01

    Contends that courses on nuclear war must help students examine the political, social, religious, philosophical, economic, and moral assumptions which characterized the dilemma of nuclear armament/disarmament. Describes the upper level undergraduate course taught by the authors. (JDH)

  6. Nuclear disarmament verification

    SciTech Connect

    DeVolpi, A.

    1993-12-31

    Arms control treaties, unilateral actions, and cooperative activities -- reflecting the defusing of East-West tensions -- are causing nuclear weapons to be disarmed and dismantled worldwide. In order to provide for future reductions and to build confidence in the permanency of this disarmament, verification procedures and technologies would play an important role. This paper outlines arms-control objectives, treaty organization, and actions that could be undertaken. For the purposes of this Workshop on Verification, nuclear disarmament has been divided into five topical subareas: Converting nuclear-weapons production complexes, Eliminating and monitoring nuclear-weapons delivery systems, Disabling and destroying nuclear warheads, Demilitarizing or non-military utilization of special nuclear materials, and Inhibiting nuclear arms in non-nuclear-weapons states. This paper concludes with an overview of potential methods for verification.

  7. Nuclear power browning out

    SciTech Connect

    Flavin, C.; Lenssen, N.

    1996-05-01

    When the sad history of nuclear power is written, April 26, 1986, will be recorded as the day the dream died. The explosion at the Chernobyl plant was a terrible human tragedy- and it delivered a stark verdict on the hope that nuclear power will one day replace fossil fuel-based energy systems. Nuclear advocates may soldier on, but a decade after Chernobyl it is clear that nuclear power is no longer a viable energy option for the twenty-first century.

  8. Nuclear Weapons as Shields

    Microsoft Academic Search

    Kyle Beardsley; Victor Asal

    2009-01-01

    What security benefits do nuclear weapons provide to their possessors? After accounting for two potential selection effects, the empirical evidence from all international crises from 1945 to 2000 indicates that opponents of nuclear-weapon states demonstrate restraint in turning to violent aggression. Nuclear weapons, however, have little effect on overall crisis occurrence.The authors also explore the behavioral effects of nuclear-weapons programs

  9. Nuclear pairing: New perspectives

    Microsoft Academic Search

    Vladimir Zelevinsky; Alexander Volya

    2003-01-01

    Nuclear pairing correlations are known to play an important role in various single-particle and collective aspects of nuclear\\u000a structure. After the first idea by A. Bohr, B. Mottelson, and D. Pines on similarity of nuclear pairing to electron superconductivity,\\u000a S.T. Belyaev gave a thorough analysis of the manifestations of pairing in complex nuclei. The current revival of interest\\u000a in nuclear

  10. NUCLEAR PLANT AND CONTROL

    E-print Network

    NUCLEAR PLANT OPERATIONS AND CONTROL KEYWORDS: software require- ments, safety analysis, formal for the digital protection systems of a nuclear power plant. When spec- ifying requirements for software and CRSA processes are described using shutdown system 2 of the Wolsong nuclear power plants as the digital

  11. NUCLEAR POWER in CALIFORNIA

    E-print Network

    NUCLEAR POWER in CALIFORNIA: 2007 STATUS REPORT CALIFORNIA ENERGY COMMISSION October 2007 CEC-100 public workshops on nuclear power. The Integrated Energy Policy Report Committee, led by Commissioners, California Contract No. 700-05-002 Prepared For: California Energy Commission Barbara Byron, Senior Nuclear

  12. Second Nuclear Era

    Microsoft Academic Search

    A. M. Weinberg; I. Spiewak; J. N. Barkenbus; R. S. Livingston; D. L. Phung

    1984-01-01

    The Institute for Energy Analysis with support from The Andrew W. Mellon Foundation has studied the decline of the present nuclear era in the United States and the characteristics of a Second Nuclear Era which might be instrumental in restoring nuclear power to an appropriate place in the energy options of our country. The study has determined that reactors operating

  13. Security with nuclear weapons

    Microsoft Academic Search

    Karp

    1991-01-01

    Recent improvements in East-West relations and the process of dramatic political change in Europe may result in unprecedented opportunities to reduce the global arsenal of nuclear weapons. Despite these welcome developments, the prospects for effectively controlling the spread of nuclear capability in the Third World have remained much less encouraging. The possibility of large reductions in nuclear weapons poses fundamental

  14. RELATIVISTIC NUCLEAR COLLISIONS: THEORY

    E-print Network

    Gyulassy, M.

    2010-01-01

    energy nuclear collisions: implications on pion spectra,"nuclear shadowing) often lead to complicated distortions of the particle spectra.nuclear collisions at energies > 1 GeV/nucleon, the cascade calculations reproduce well the high momentum com­ ponent ' ' of the spectra

  15. Nuclear energy technology

    NASA Technical Reports Server (NTRS)

    Buden, David

    1992-01-01

    An overview of space nuclear energy technologies is presented. The development and characteristics of radioisotope thermoelectric generators (RTG's) and space nuclear power reactors are discussed. In addition, the policy and issues related to public safety and the use of nuclear power sources in space are addressed.

  16. Nuclear beta decay

    Microsoft Academic Search

    H. Behrens; W. Bühring

    1971-01-01

    New formulae for nuclear beta decay are derived by using a modified expansion of the electron radial wave functions. This expansion is obtained by means of the integral equations which correspond to the Dirac radial differential equations. As a consequence new types of form factor coefficients or nuclear matrix elements occur which depend on the shape of the nuclear charge

  17. Basic Nuclear Physics.

    ERIC Educational Resources Information Center

    Bureau of Naval Personnel, Washington, DC.

    Basic concepts of nuclear structures, radiation, nuclear reactions, and health physics are presented in this text, prepared for naval officers. Applications to the area of nuclear power are described in connection with pressurized water reactors, experimental boiling water reactors, homogeneous reactor experiments, and experimental breeder…

  18. Effects of Nuclear Weapons.

    ERIC Educational Resources Information Center

    Sartori, Leo

    1983-01-01

    Fundamental principles governing nuclear explosions and their effects are discussed, including three components of a nuclear explosion (thermal radiation, shock wave, nuclear radiation). Describes how effects of these components depend on the weapon's yield, its height of burst, and distance of detonation point. Includes effects of three…

  19. The Tokaimura Nuclear Accident

    NSDL National Science Digital Library

    Michael E. Ryan

    2001-09-01

    The 1999 accident at the Tokaimura nuclear fuel processing plant near Tokyo is the context for a student discussion on nuclear power and the consequences of a nuclear accident. The case covers issues ranging from chemical process safety to risk management

  20. The truncated nuclear family

    Microsoft Academic Search

    Gerald H. Zuk

    1985-01-01

    The truncated nuclear family is defined: it is the garden-variety family “pathology” found. The critical role of polarized continuity and discontinuity values in producing the truncated nuclear family is discussed. There is a brief review of factors in American society which, over the decades since the Second World War, have evolved the nuclear family as a dominant family unit, and

  1. Teaching Nuclear History.

    ERIC Educational Resources Information Center

    Holl, Jack M.; Convis, Sheila C.

    1991-01-01

    Presents results of a survey of the teaching about nuclear history at U.S. colleges and universities. Reports the existence of a well-established and extensive literature, a focus on nuclear weapons or warfare, and a concentration on nuclear citizenship, therapy, or eschatology for courses outside of history departments. Discusses individual…

  2. Nuclear spirals in galaxies

    E-print Network

    Witold Maciejewski

    2006-11-08

    Recent high-resolution observations indicate that nuclear spirals are often present in the innermost few hundred parsecs of disc galaxies. My models show that nuclear spirals form naturally as a gas response to non-axisymmetry in the gravitational potential. Some nuclear spirals take the form of spiral shocks, resulting in streaming motions in the gas, and in inflow comparable to the accretion rates needed to power local Active Galactic Nuclei. Recently streaming motions of amplitude expected from the models have been observed in nuclear spirals, confirming the role of nuclear spirals in feeding of the central massive black holes.

  3. History of Nuclear India

    NASA Astrophysics Data System (ADS)

    Chaturvedi, Ram

    2000-04-01

    India emerged as a free and democratic country in 1947, and entered into the nuclear age in 1948 by establishing the Atomic Energy Commission (AEC), with Homi Bhabha as the chairman. Later on the Department of Atomic Energy (DAE) was created under the Office of the Prime Minister Jawahar Lal Nehru. Initially the AEC and DAE received international cooperation, and by 1963 India had two research reactors and four nuclear power reactors. In spite of the humiliating defeat in the border war by China in 1962 and China's nuclear testing in 1964, India continued to adhere to the peaceful uses of nuclear energy. On May 18, 1974 India performed a 15 kt Peaceful Nuclear Explosion (PNE). The western powers considered it nuclear weapons proliferation and cut off all financial and technical help, even for the production of nuclear power. However, India used existing infrastructure to build nuclear power reactors and exploded both fission and fusion devices on May 11 and 13, 1998. The international community viewed the later activity as a serious road block for the Non-Proliferation Treaty and the Comprehensive Test Ban Treaty; both deemed essential to stop the spread of nuclear weapons. India considers these treaties favoring nuclear states and is prepared to sign if genuine nuclear disarmament is included as an integral part of these treaties.

  4. Commercial nuclear power 1990

    SciTech Connect

    Not Available

    1990-09-28

    This report presents the status at the end of 1989 and the outlook for commercial nuclear capacity and generation for all countries in the world with free market economies (FME). The report provides documentation of the US nuclear capacity and generation projections through 2030. The long-term projections of US nuclear capacity and generation are provided to the US Department of Energy's (DOE) Office of Civilian Radioactive Waste Management (OCRWM) for use in estimating nuclear waste fund revenues and to aid in planning the disposal of nuclear waste. These projections also support the Energy Information Administration's annual report, Domestic Uranium Mining and Milling Industry: Viability Assessment, and are provided to the Organization for Economic Cooperation and Development. The foreign nuclear capacity projections are used by the DOE uranium enrichment program in assessing potential markets for future enrichment contracts. The two major sections of this report discuss US and foreign commercial nuclear power. The US section (Chapters 2 and 3) deals with (1) the status of nuclear power as of the end of 1989; (2) projections of nuclear capacity and generation at 5-year intervals from 1990 through 2030; and (3) a discussion of institutional and technical issues that affect nuclear power. The nuclear capacity projections are discussed in terms of two projection periods: the intermediate term through 2010 and the long term through 2030. A No New Orders case is presented for each of the projection periods, as well as Lower Reference and Upper Reference cases. 5 figs., 30 tabs.

  5. Overview of nuclear data

    SciTech Connect

    Firestone, R.B.

    2003-06-30

    For many years, nuclear structure and decay data have been compiled and disseminated by an International Network of Nuclear Structure and Decay Data (NSDD) evaluators under the auspices of the International Nuclear Data Committee (INDC) of the International Atomic Energy Agency (IAEA). In this lecture I will discuss the kinds of data that are available and describe various ways to obtain this information. We will learn about some of the publications that are available and Internet sources of nuclear data. You will be introduced to Isotope Explorer software for retrieving and displaying nuclear structure and radioactive decay data. The on-line resources Table of Radioactive Isotopes, PGAA Database Viewer, Nuclear Science Reference Search, Table of Isotopes Educational Website, and other information sources will be discussed. Exercises will be provided to increase your ability to understand, access, and use nuclear data.

  6. Nuclear Reactor Physics

    NASA Astrophysics Data System (ADS)

    Stacey, Weston M.

    2001-02-01

    An authoritative textbook and up-to-date professional's guide to basic and advanced principles and practices Nuclear reactors now account for a significant portion of the electrical power generated worldwide. At the same time, the past few decades have seen an ever-increasing number of industrial, medical, military, and research applications for nuclear reactors. Nuclear reactor physics is the core discipline of nuclear engineering, and as the first comprehensive textbook and reference on basic and advanced nuclear reactor physics to appear in a quarter century, this book fills a large gap in the professional literature. Nuclear Reactor Physics is a textbook for students new to the subject, for others who need a basic understanding of how nuclear reactors work, as well as for those who are, or wish to become, specialists in nuclear reactor physics and reactor physics computations. It is also a valuable resource for engineers responsible for the operation of nuclear reactors. Dr. Weston Stacey begins with clear presentations of the basic physical principles, nuclear data, and computational methodology needed to understand both the static and dynamic behaviors of nuclear reactors. This is followed by in-depth discussions of advanced concepts, including extensive treatment of neutron transport computational methods. As an aid to comprehension and quick mastery of computational skills, he provides numerous examples illustrating step-by-step procedures for performing the calculations described and chapter-end problems. Nuclear Reactor Physics is a useful textbook and working reference. It is an excellent self-teaching guide for research scientists, engineers, and technicians involved in industrial, research, and military applications of nuclear reactors, as well as government regulators who wish to increase their understanding of nuclear reactors.

  7. Teatro de las Bellas Artes de la Ciudad de México

    E-print Network

    Mendoza Ló pez, Margarita

    1985-04-01

    hall, ferias y exposiciones. Llega el año de 1930, que es de buen augurio para el edificio. El ingeniero Pascual Ortiz Rubio asume la presidencia de la República y desea que se prosigan las obras del Teatro Nacional. Como no existe presupuesto para... visibilidad mejoró y el cupo se aumentó. Tanto por el costo de los materiales como por el deseo nacionalista de los encargados de la obra se procuró que fueran mexicanos, pero las flautas del órgano fueron fabricadas en Alemania. En Estados Unidos se...

  8. El Informe Anual a la Nación Muestra que la Incidencia de Cáncer y las Tasas de Mortalidad están Declinado: Las Tasas de Supervivencia Reflejan Progreso Significativo

    Cancer.gov

    Las organizaciones más importantes de la Nación informan que los riesgos de la población americana a contraer o morir a causa de cáncer continúan disminuyendo mientras que las tasas de supervivencia para muchos tipos de cáncer continúan aumentando.

  9. Retos de las PyME en la era digital: ¿Rol de las asociaciones de empresas¿: Proyecto de Apoyo al Desarrollo del Comercio electrónico en Guatemala

    Microsoft Academic Search

    Mercedes Zaghi

    2006-01-01

    Fortalecer la confianza en las transacciones en línea, Concienciar y capacitar al personal de la CCG y de las PYMES en TIC y comercio, Asistencia técnica y desarrollo de servicios en el uso de TIC y de comercio electrónico

  10. CARACTERÍSTICAS DEL DIRECTIVO RESPONSABLE DEL ÁREA INTERNACIONAL Y RESULTADO EXPORTADOR DE LAS EMPRESAS INDUSTRIALES

    Microsoft Academic Search

    Del Río Araújo

    2005-01-01

    RESUMEN La creencia de que la intensidad exportadora de las empresas puede estar ocasionada por barreras internas ha generado un cuerpo de investigación sobre la influencia de las características de los directivos responsables del área internacional (DRAI) en el inicio de las operaciones de exportación, la adopción de un papel activo en la intensificación de las exportaciones o el logro

  11. Clasificacin de las amenazas a la seguridad en sistemas RFID -EPC Gen2

    E-print Network

    Garcia-Alfaro, Joaquin

    Clasificación de las amenazas a la seguridad en sistemas RFID - EPC Gen2 Joan Melià-Seguí, Joaquin este artículo una vista rápida a la familia de amenazas a las que se enfrenta la tecnología EPC. Index las amenazas de seguridad. Como sucede en otras tecnologías emergentes, la falta de seguridad y las

  12. Compact Groups of Galaxies in the Las Campanas Redshift Survey

    Microsoft Academic Search

    S. S. Allam; D. L. Tucker

    1998-01-01

    Compact groups of galaxies -- relatively poor groups of galaxies in which the typical separations between members is of the order of a galaxy diameter -- offer an exceptional laboratory for the study of dense galaxian environments. Here, we present first results from a new catalogue of compact groups, based upon the Las Campanas Redshift Survey, which contains 78 compact

  13. Las Rocas Nos Cuentan (Rocks Tell Their Stories)

    ERIC Educational Resources Information Center

    Llerandi-Roman, Pablo A.

    2012-01-01

    Many Earth science lessons today still focus on memorizing the names of rocks and minerals. This led the author to develop a lesson that reveals the fascinating stories told by rocks through the study of their physical properties. He first designed the lesson for Puerto Rican teachers, hence its Spanish title: "Las Rocas Nos Cuentan Su Historia."…

  14. Computando lo aspero Por que se cuelgan las computadoras?

    E-print Network

    Figueira, Santiago

    construir una m´aquina que demuestre teoremas y as´i encuentre todas las verdades matem´aticas. Kurt G¨odel´aquina no puede resolver. #12;Historia de Hilbert y sus amigos David Hilbert: Bueno... yo pens´e que... Kurt G¨odel

  15. NEVADA UNIVERSITY TRANSPORTATION CENTER UNIVERSITY OF NEVADA, LAS VEGAS

    E-print Network

    Hemmers, Oliver

    NEVADA UNIVERSITY TRANSPORTATION CENTER UNIVERSITY OF NEVADA, LAS VEGAS 2011-2012 ANNUAL REPORT #12 University Transportation Center (NUTC) Vision: The NUTC will strive to become a nationally recognized center of excellence for research in planning, operations and management of sustainable transportation systems

  16. Introduction Las Vegas is a place of continual reinvention. Due

    E-print Network

    Hemmers, Oliver

    of targeted family marketing are identified, addressing why this advertising approach ultimately did and a concerted advertising effort by some properties to target families. This paper explores the economic carefully-designed advertising schemes displayed in print and visual media. Given that the image of Las

  17. Aprendizaje de las matemáticas utilizando una herramienta distribuida

    Microsoft Academic Search

    Everth Rocha; Gabriel Gerónimo; Francisco Hernández

    2005-01-01

    Este proyecto busca apoyar el proceso de aprendizaje de las matemáticas en escuelas de educación primaria, proponiendo una práctica educativa que utiliza modelos mentales usuales para el niño, el uso de la informática, y de tecnología distribuida de información. A lo largo de este documento se expone la forma en que se han empleado metodologías de usabilidad para implementar la

  18. Descubriendo el código digital de las levaduras vínicas

    Microsoft Academic Search

    Anthony R. Borneman; Angus H. Forgan; Paul J. Chambers; Isak S. Pretorius

    Cada cuatro años los Juegos Olímpicos inspiran al mundo con actuaciones espectaculares y hazañas de resistencia, velocidad y elegancia. Nos maravillamos ante las proezas atléticas de los competidores, y la mayoría de nosotros solo nos podemos preguntar cómo hacen estos campeones para alcanzar estos estándares. ¿Qué es lo hace a estos ganadores tan diferentes del resto de nosotros? ¿No somos

  19. ESTRUCTURA DE LAS ACTITUDES HACIA EL CONSUMO ELECTRÓNICO

    Microsoft Academic Search

    Cruz García Lirios

    2011-01-01

    Se entrevistaron a 188 usuarios de una biblioteca pública en la que se ofrecen servicios digitales de información científica y acceso a redes sociales y comercio electrónico. El objetivo del estudio fue demostrar la estructura de las actitudes, su distribución normal, confiabilidad, validez de constructo y covariación entre sus indicadores. Los resultados corroboran la hipótesis nula y a partir de

  20. Castelldefels Salut: Las redes sociales y la Atención Primaria

    Microsoft Academic Search

    Ramon Morera; Tino Martí; Irene Cubells; Mireia Sans; Alba Brugués; Antoni Peris; Eduard Navarro

    2012-01-01

    Las enfermedades crónicas, en buena parte causadas por los estilos de vida, están y estarán tensionando a los servicios sanitarios. Una estrategia que cada día adquiere más vigencia son los proyectos de salud comunitarios que puedan incidir, de forma efectiva, para fomentar hábitos de vida más saludables. En este artículo presentamos nuestra experiencia de trabajo en red de los distintos

  1. Accesibilidad en las Aulas de la Web 2.0

    Microsoft Academic Search

    Juan Gabriel; Sáenz Espitia

    El uso de las Nuevas tecnologías de la información y la comunicación (TIC) en la educación ha abierto nuevas posibilidades de aprendizaje y acceso a la información para muchas personas, al mismo tiempo que aumenta la brecha digital entre quienes tienen mayor acceso a la información, a la educación y a la tecnología, y la gran minoría de personas para

  2. La educación en las matemáticas bajo un entorno tecnológico

    Microsoft Academic Search

    Juan Carlos Briceño

    2011-01-01

    Actualmente, algunos indicadores internacionales muestran cuan mal va la educación matemática y como algunos institutos de educación superior están realizando esfuerzos importantes por sustituir el modo tradicional de educación, al cual se atribuye el estado de la situación. Al respecto, se tiene confianza en la introducción de las Tecnologías de la Información y Comunicación, en los procesos educativos y en

  3. Efectos de las fusiones sobre el mercado financiero colombiano

    Microsoft Academic Search

    Dairo Estrada

    2005-01-01

    Este trabajo examina los efectos de las fusiones en el sistema ban- cario sobre la eficiencia del sistema y los precios. Se encuentra que los bancos que han atravesado procesos de fusiones pueden experimentar mejoras en los indices de eficiencia en beneficios. Estas mejoras en eficiencia fueron superiores para aquellos bancos que presentaban rankings de eficiencia más bajos antes de

  4. University of Nevada Las Vegas School of Life Sciences

    E-print Network

    Hemmers, Oliver

    University of Nevada Las Vegas School of Life Sciences Graduate Program Handbook Prepared by the School of Life Sciences Graduate Operations Committee Revised September 2011 #12;Table of Contents Page..........................................................................................................................20 #12;1 The School of Life Sciences Graduate Program Handbook School of Life Sciences (So

  5. Selección de los principales problemas de seguridad de las vacunas

    Microsoft Academic Search

    John K. Iskander; Jane Gidudu; Nelson Arboleda; Wan-Ting Huang

    2008-01-01

    ExtractoEjemplos recientes de los principales beneficios en salud pública de la vacunación incluyen reducciones globales de la mortalidad por sarampión y el registro de niveles bajos de enfermedades evitables por vacunas en Estados Unidos. No obstante, los problemas reales o percibidos de seguridad de las vacunas pueden ejercer un impacto adverso sobre los programas de vacunación. La monitorización sólida de

  6. Reading "Las Meninas": An Ekphrastic Approach to Teaching "Don Quijote"

    ERIC Educational Resources Information Center

    Ortuno, Marian

    2012-01-01

    Reading and teaching "Don Quijote" present multiple challenges to twenty-first century students and instructors who are culturally and historically distanced from the seventeenth century. With "Las Meninas" serving as a visual lexicon for cuing correlative themes and events in "Don Quijote", the instructor, through an ekphrastic, interdisciplinary…

  7. CONCENTRACION INDUSTRIAL EN LAS REGIONES ESPAÑOLAS Y EUROPEAS

    Microsoft Academic Search

    Maria-Carmen GUISAN; Maria-Teresa CANCELO; Maria-Rosario DÍAZ

    2010-01-01

    Este documento es una versión actualizada del Capítulo 3 del libro de Guisán, Cancelo, Aguayo y Díaz(2001). El interés de este estudio está en analizar la importancia de la industria sobre la renta y el empleo de las regiones europeas, no sólo por su efecto positivo directo sino también por sus efectos positivos indirectos sobre otros sectores productivos y en

  8. UNIVERSIDAD DE LAS AM ERICAS PUEBLA Escuela de Ingenieria

    E-print Network

    Navarro Pérez, Juan

    UNIVERSIDAD DE LAS AM ´ERICAS ­ PUEBLA Escuela de Ingenier´ia Departamento de Ingenier´ia en Ciencias con Especialidad en Ingenier´ia en Sistemas Computacionales. Dirigida por Dr. Mauricio Osorio Galindo y aceptada por el Departamento de Ingenier´ia en Sistemas Computacionales. Sta. Catarina M

  9. UNIVERSIDAD DE VALLADOLID EDIFICIO DE LAS TECNOLOGIAS DE LA

    E-print Network

    Palop del Río, Belén

    , utilizando las estructuras del Diagrama de Voronoi, y su dual, la Triangulaci´on de Delaunay, y el M´etodo de interpolaci´on por vecinos naturales propuesto por Sibson. Definimos dos mecanismos de contagio, el M´etodo de conteo con vecinos naturales y el M´etodo de interpolaci´on con vecinos naturales. Dado que no existe

  10. Impacto de las regalías petroleras en el Departamento del Meta

    Microsoft Academic Search

    Germán Humberto Hernández Leal

    2004-01-01

    El departamento del Meta extrae petróleo crudo desde el año 1976, ubicándose, en la actualidad, entre los tres mayores productores del país. En consecuencia, con la influencia de su producción y las regalías, que han elevado el PIB departamental y fortalecido sus finanzas públicas, deben garantizarse amplías oportunidades de inversión, tanto pública como privada. El objetivo de este estudio es,

  11. Tree-Killing Las Conchas Fire in New Mexico

    USGS Multimedia Gallery

    USGS scientist Craig D. Allen observes the results of the extensive, tree-killing fire that consumed almost all above-ground biomass in this part of the Las Conchas Fire burn area in the Jemez Mountains, New Mexico. Photo taken in late August 2011, two months post-fire. Forest drought stress is high...

  12. Las igualas médicas frente al seguro social (República Dominicana)

    Microsoft Academic Search

    Isidoro Santana

    1997-01-01

    Los servicios médicos del seguro social y las igualas médicas privadas son sistemas de provisión de servicios prepagados de salud. El primero se organiza bajo la modalidad de producción estatal, con una gestión centralizada, cotizaciones obligatorias y sin posibilidad de elección del proveedor por parte del usuario. No obstante, el segundo se trata de entidades privadas, gestión descentralizada, regidas por

  13. ALTERNATIVAS PARA LA OPTIMIZACIÓN DE LAS CAPACIDADES DE ALMACENAMIENTO

    Microsoft Academic Search

    Daynier Marzo Cervera; Elsa Delgado Pérez; Clara Marrero Fornaris

    2010-01-01

    Hoy en día el dominio de la logística se ha transformado en uno de los ingredientes esenciales del éxito empresarial, existiendo empresas especializadas en brindar servicios terciarios de gestión logística. El caso de estudio seleccionado es un operador logístico especializado en el arrendamiento de almacenes, donde por las dificultades relacionadas con la utilidad del arrendamiento por metro cuadrado, la tecnología

  14. Control del dolor: Apoyo para las personas con cáncer

    Cancer.gov

    Contiene información sobre las medicinas contra el dolor para pacientes con cáncer, los planes para controlarlo, cómo hablar con su equipo de atención médica sobre el dolor que usted siente y qué hacer para controlar los efectos físicos y emocionales del mismo.

  15. Nuclear Science References Database

    E-print Network

    B. Pritychenko; E. B?ták; B. Singh; J. Totans

    2014-07-08

    The Nuclear Science References (NSR) database together with its associated Web interface, is the world's only comprehensive source of easily accessible low- and intermediate-energy nuclear physics bibliographic information for more than 210,000 articles since the beginning of nuclear science. The weekly-updated NSR database provides essential support for nuclear data evaluation, compilation and research activities. The principles of the database and Web application development and maintenance are described. Examples of nuclear structure, reaction and decay applications are specifically included. The complete NSR database is freely available at the websites of the National Nuclear Data Center http://www.nndc.bnl.gov/nsr and the International Atomic Energy Agency http://www-nds.iaea.org/nsr.

  16. Nuclear Science References Database

    NASA Astrophysics Data System (ADS)

    Pritychenko, B.; B?ták, E.; Singh, B.; Totans, J.

    2014-06-01

    The Nuclear Science References (NSR) database together with its associated Web interface, is the world's only comprehensive source of easily accessible low- and intermediate-energy nuclear physics bibliographic information for more than 210,000 articles since the beginning of nuclear science. The weekly-updated NSR database provides essential support for nuclear data evaluation, compilation and research activities. The principles of the database and Web application development and maintenance are described. Examples of nuclear structure, reaction and decay applications are specifically included. The complete NSR database is freely available at the websites of the National Nuclear Data Center http://www.nndc.bnl.gov/nsr and the International Atomic Energy Agency http://www-nds.iaea.org/nsr.

  17. Nuclear Files Archive

    NSDL National Science Digital Library

    A project of the Nuclear Age Peace Foundation, this site offers a wealth of materials concerning nuclear weapons and nuclear war, including links to the full text of numerous important documents and treaties. Site contents include a wide variety of articles on various nuclear issues, links to data and graphs, a photo gallery, links to images of nuclear sites, teacher resources, a glossary, and related links. Of special interest is a side-by-side comparison of the first and final drafts of the exhibit script for the National Air and Space Museum exhibit that was planned but cancelled: The Last Act: The Atomic Bomb and the End of World War II. Numerous links are provided throughout the site to related online and print publications and other resources. While not the most attractive site and downright cluttered in some areas, the Nuclear Files Archive offers a good deal of information for users who don't mind digging around a bit.

  18. Nuclear: Greenpeace International

    NSDL National Science Digital Library

    For an anti-nuclear perspective, look no further than Greenpeace. The venerable environmental organization, now in its 43rd year, seeks to â??end the nuclear ageâ? because it believes nuclear power â??is an unacceptable risk to the environment and to humanity.â? Each of the links offers informative â?? and opinionated â?? arguments against the proliferation of nuclear power. Start with the siteâ??s gloss of the Fukushima Disaster, where you will find Fact Sheets, Publications, and Downloads related to the March 2011 meltdown. Next, peruse the Safety page with links to Nuclear Terrorism, Accidents, Reactors, and Radiation. Nuclear Waste is up next, where you can learn about Reprocessing, Storage, Transport, and Russia. Finally, read about Proliferation, with links to Plutonium and Dirty Bombs.

  19. (DOCFRADIS 1201) Estrategia publicitaria del minorista en las redes sociales. Factores que motivan las compras en la web 2.0

    Microsoft Academic Search

    Ines Küster Boluda; Natalia Vila López; Asunción Hernández Fernández

    2012-01-01

    El uso de las redes sociales, como estrategia publicitaria del minorista, favorece la comunicación interactiva de la marca y sus productos y motiva las compras, en la web 2.0, produciéndose una revolución en el paradigma estimulo-respuesta del siglo XXI. El trabajo analiza la potencialidad de la interactividad como estrategia de marca en las redes sociales e identifica los factores clave

  20. UNIVERSITY OF NEVADA, LAS VEGAS CODE OF ETHICS AND CONDUCT The University of Nevada, Las Vegas (UNLV) performs its mission with the highest

    E-print Network

    Hemmers, Oliver

    UNIVERSITY OF NEVADA, LAS VEGAS CODE OF ETHICS AND CONDUCT The University of Nevada, Las Vegas and procedures constitute the University of Nevada, Las Vegas Code of Ethics and Conduct: State Law: Nevada Revised Code ­ Code of Ethical Standards http://www.leg.state.nv.us/NRS/NRS-281A.html#NRS281ASec400 Nevada

  1. Absolute nuclear material assay

    DOEpatents

    Prasad, Manoj K. (Pleasanton, CA); Snyderman, Neal J. (Berkeley, CA); Rowland, Mark S. (Alamo, CA)

    2012-05-15

    A method of absolute nuclear material assay of an unknown source comprising counting neutrons from the unknown source and providing an absolute nuclear material assay utilizing a model to optimally compare to the measured count distributions. In one embodiment, the step of providing an absolute nuclear material assay comprises utilizing a random sampling of analytically computed fission chain distributions to generate a continuous time-evolving sequence of event-counts by spreading the fission chain distribution in time.

  2. Nuclear Fabrication Consortium

    SciTech Connect

    Levesque, Stephen

    2013-04-05

    This report summarizes the activities undertaken by EWI while under contract from the Department of Energy (DOE) � Office of Nuclear Energy (NE) for the management and operation of the Nuclear Fabrication Consortium (NFC). The NFC was established by EWI to independently develop, evaluate, and deploy fabrication approaches and data that support the re-establishment of the U.S. nuclear industry: ensuring that the supply chain will be competitive on a global stage, enabling more cost-effective and reliable nuclear power in a carbon constrained environment. The NFC provided a forum for member original equipment manufactures (OEM), fabricators, manufacturers, and materials suppliers to effectively engage with each other and rebuild the capacity of this supply chain by : � Identifying and removing impediments to the implementation of new construction and fabrication techniques and approaches for nuclear equipment, including system components and nuclear plants. � Providing and facilitating detailed scientific-based studies on new approaches and technologies that will have positive impacts on the cost of building of nuclear plants. � Analyzing and disseminating information about future nuclear fabrication technologies and how they could impact the North American and the International Nuclear Marketplace. � Facilitating dialog and initiate alignment among fabricators, owners, trade associations, and government agencies. � Supporting industry in helping to create a larger qualified nuclear supplier network. � Acting as an unbiased technology resource to evaluate, develop, and demonstrate new manufacturing technologies. � Creating welder and inspector training programs to help enable the necessary workforce for the upcoming construction work. � Serving as a focal point for technology, policy, and politically interested parties to share ideas and concepts associated with fabrication across the nuclear industry. The report the objectives and summaries of the Nuclear Fabrication Consortium projects. Full technical reports for each of the projects have been submitted as well.

  3. [Nuclear News -- Power

    SciTech Connect

    NONE

    1999-11-01

    The topics discussed in this section are: (1) NU(Northeast Utilities) receives largest court fine levied for false records. (2) ComEd nuclear fleet has best-ever performance. (3) Perry and Beaver Valley now run by First Energy Nuclear. (4) Slight reactor power increases may save dollars; (5) Nuclear plants shares to change hands. (6) Y2K nonsafety-related work scheduled for completion. (7) New NRC plan for reviewing plant license transfers with foreign ownership.

  4. Nuclear imaging in pediatrics

    SciTech Connect

    Siddiqui, A.R.

    1985-01-01

    The author's intent is to familiarize practicing radiologists with the technical aspects and interpretation of nuclear medicine procedures in children and to illustrate the indications for nuclear medicine procedures in pediatric problems. Pediatric doses, dosimetry, sedation, and injection techniques, organ systems, oncology and infection, testicular scanning and nuclear crystography, pediatric endocrine and skeletal systems, ventilation and perfusion imaging of both congenital and acquired pediatric disorders, cardiovascular problems, gastrointestinal, hepatobiliary, reticuloendothelial studies, and central nervous system are all topics which are included and discussed.

  5. Overview of Nuclear Disasters

    Microsoft Academic Search

    Jun Takada

    \\u000a Over 2,400 nuclear explosions were conducted worldwide during the cold war between the USA and USSR since July 1945. The total\\u000a yield of 530 Mt was 35,000 times that of the Hiroshima atomic bomb. Surface and underground nuclear explosions caused radioactive\\u000a pollution locally in ground and water systems. Fission products and plutonium with long half-lives are nuclear hazards for\\u000a local

  6. Power politics. The nuclear industry and nuclear exports

    Microsoft Academic Search

    G. C. Duffy; G. Adams

    1978-01-01

    This report examines the nuclear industry, its involvement in the international nuclear market, and the views of corporate spokespersons on exports and proliferation. It addresses the question of how nonproliferation policy may affect the nuclear industry and the nuclear power debate in the US, and how the status of the industry and trends in the world nuclear market may determine

  7. FUSION NUCLEAR SCIENCE PROGRAM & SUPPORTING FUSION NUCLEAR SCIENCE FACILITY (FNSF)

    E-print Network

    FUSION NUCLEAR SCIENCE PROGRAM & SUPPORTING FUSION NUCLEAR SCIENCE FACILITY (FNSF): UPDATE in order to apply the knowledge we gained about burning plasma state #12;FUSION NUCLEAR SCIENCE PROGRAM #12;FUSION NUCLEAR SCIENCE PROGRAM DEVELOPMENT OF ELEMENTS OF THE FUSION NUCLEAR SCIENCE PROGRAM

  8. Prohibiting nuclear weapons: initiatives towards global nuclear disarmament

    Microsoft Academic Search

    J. R. Shanebrook

    1999-01-01

    The world now stands at a precarious nuclear fork in the road with the following characteristics: the Nuclear Left Path is characterized by continued vertical and horizontal proliferation of nuclear weapons with the danger being that any nation (or terrorist group) that wants such weapons, and can afford them, will eventually secure them; the Nuclear Right Path prohibits all nuclear

  9. Preparing Non-nuclear Engineers for the Nuclear Field

    E-print Network

    Ervin, Elizabeth K.

    perspectives are shifting, only a limited number of American programs have nuclear-related components. Twenty-four universities have nuclear- related programs, including Nuclear or Radiological Engineering, Nuclear Science technology, the proposed course relates nuclear systems engineering, safe reactor design, infrastructure

  10. Nuclear criticality safety guide

    SciTech Connect

    Pruvost, N.L.; Paxton, H.C. [eds.] [eds.

    1996-09-01

    This technical reference document cites information related to nuclear criticality safety principles, experience, and practice. The document also provides general guidance for criticality safety personnel and regulators.

  11. Technologists for Nuclear Medicine

    ERIC Educational Resources Information Center

    Barnett, Huey D.

    1974-01-01

    Physicians need support personnel for work with radioisotopes in diagnosing dangerous diseases. The Nuclear Medicine Technology (NMT) Program at Hillsborough Community College in Tampa, Florida, is described. (MW)

  12. International Nuclear Safety Program

    NSDL National Science Digital Library

    The International Nuclear Safety Program (INSP) has updated their map collection in the areas of Soviet designed reactors distributed throughout Eastern Europe and of Ukrainian nuclear power reactors. Information about each reactor is available by clicking on the maps. In addition to the maps, the digital library contains photos, graphics, presentations, and an online database of INSP related reports and information. The site also provides information about Soviet designed reactors and initiatives being undertaken by the US Department of Energy to improve conditions at the Chornobyl nuclear power plant. INSP is part of the US Department of Energy's Office of Nuclear Energy, Science, and Technology.

  13. World nuclear generating capacity

    SciTech Connect

    NONE

    1996-11-01

    Data on the nuclear generating capacity for 1995-1996 of 39 countries are provided in tables and brief summaries. For each nuclear power plant, the operator, reactor supplier, type, net capacity, construction stage, startup and decommissioning dates, and total installed capacity are listed. World totals are provided for 1991, 1996, and 2001 (projected). A total of 424 nuclear power plants operated during this period with a total generating capacity of 347.1 gigawatts electric. Nuclear generating capacity is predicted to be over 365 gigawatts electric by 2001. 105 plants are under construction or planned to begin commercial operation by 2010. 62 plants are scheduled for decommissioning by 2010.

  14. OFFSITE ENVIRONMENTAL MONITORING REPORT: RADIATION MONITORING AROUND UNITED STATES NUCLEAR TEST AREAS, CALENDAR YEAR 1980

    EPA Science Inventory

    The U.S. Environmental Protection Agency's Environmental Monitoring Systems Laboratory in Las Vegas continued its Offsite Radiological Safety Program for the Nevada Test Site (NTS) and other sites of past underground nuclear tests. For each test, the Laboratory provided airborne ...

  15. OFFSITE ENVIRONMENTAL MONITORING REPORT. RADIATION MONITORING AROUND UNITED STATES NUCLEAR TEST AREAS, CALENDAR YEAR 1983

    EPA Science Inventory

    This report covers the routine radiation monitoring activities conducted by the Environmental Monitoring Systems Laboratory-Las Vegas in areas which may be affected by nuclear testing programs of the Department of Energy. This monitoring is conducted to document compliance with s...

  16. ¿Qué determina la eficiencia de las entidades microfinancieras en Colombia? Una mirada a las ONG asociadas a Bancoldex

    Microsoft Academic Search

    Francisco Perdomo N

    2011-01-01

    Este trabajo busca demostrar empíricamente si para Colombia se cumple la misma lógica presente en la evidencia internacional sobre si las Entidades de Microfinanzas (EMF) son costo-efectivas y si sus costos son decrecientes a través del tiempo, independientemente a que sean o no auto-sostenibles y a que dependan mucho de donaciones. Se realiza una estimación por el algoritmo de la

  17. UNIVERSIDAD DE GRANADA ESCUELA TECNICA SUPERIOR DE INGENIERIAS

    E-print Network

    Granada, Universidad de

    to everything I do. Thanks also to my family. This work has been funded by programs TIC-2003-01504 and TEC2006/13845/TCM from the Spanish Ministerio de Educaci´on y Ciencia. xi #12;#12;Summary In the modern world

  18. UNIVERSIDAD DE GRANADA ESCUELA TECNICA SUPERIOR DE INGENIERIAS

    E-print Network

    Granada, Universidad de

    UNIVERSIDAD DE GRANADA ESCUELA T´ECNICA SUPERIOR DE INGENIER´IAS INFORM´ATICA Y DE TELECOMUNICACI CIENCIAS DE LA COMPUTACI´ON E INTELIGENCIA ARTIFICIAL ESCUELA T´ECNICA SUPERIOR DE INGENIER´IAS INFORM Departamento de Ingenier´ia de dicha Universidad, donde he pasado tan buenos ratos. Tambi´en agradezco a Mario

  19. Universidad Rey Juan Carlos Escuela Tecnica Superior de Ingenieria Informatica

    E-print Network

    Pantrigo Fernández, Juan José

    ´agenes mediante un computador, por lo que lo que su aplicaci´on en v´ideo vigilancia resulta m´as que apropiada. En este campo resulta frecuente el seguimiento o detecci´on de elementos m´oviles, siendo menos computador. Una aplicaci´on directa de esto es el seguimiento de objetos desatendidos en zonas de paso, como

  20. Generation IV Nuclear Energy Systems ...

    E-print Network

    Kemner, Ken

    Generation IV Nuclear Energy Systems ... The U.S. Department of Energy's Office of Nuclear Energy enhance safety and security, and develop nuclear power as an energy source for industrial applications Information ... U.S. Department of Energy www.energy.gov DOE Office of Nuclear Energy www.nuclear

  1. Nuclear Energy and the Environment.

    ERIC Educational Resources Information Center

    International Atomic Energy Agency, Vienna (Austria).

    "Nuclear Energy and the Environment" is a pocket folder of removable leaflets concerned with two major topics: Nuclear energy and Nuclear Techniques. Under Nuclear Energy, leaflets concerning the topics of "Radiation--A Fact of Life,""The Impact of a Fact: 1963 Test Ban Treaty,""Energy Needs and Nuclear Power,""Power Reactor Safety,""Transport,"…

  2. Common sense in nuclear energy

    Microsoft Academic Search

    F. Hoyle; G. Hoyle

    1980-01-01

    Public concern about energy resource exhaustion is noted to have developed only after the means (nuclear power) for avoiding this disaster became available and the negative implications of a nuclear society became a focus for anxiety. Ironically, collapse of conventional energy supplies could lead to the nuclear confrontation which anti-nuclear forces claim as the inevitable outcome of nuclear power. A

  3. Countering the Nuclear Terrorist Threat

    Microsoft Academic Search

    Vantine

    2002-01-01

    The nuclear\\/radioactive threat to homeland security posed by terrorists can be broken into four categories. Of highest concern is the use of an improvised nuclear device (IND). An IND, as its name implies, is a nuclear explosive device. It produces nuclear yield, and this nuclear yield has catastrophic effects. An IND is the ultimate terrorist weapon, and terrorist groups are

  4. Nuclear fuel cycle information workshop

    SciTech Connect

    Not Available

    1983-01-01

    This overview of the nuclear fuel cycle is divided into three parts. First, is a brief discussion of the basic principles of how nuclear reactors work; second, is a look at the major types of nuclear reactors being used and world-wide nuclear capacity; and third, is an overview of the nuclear fuel cycle and the present industrial capability in the US.

  5. Gordon Conference on Nuclear Research

    SciTech Connect

    Austin, S.M.

    1983-09-01

    Session topics were: quarks and nuclear physics; anomalons and anti-protons; the independent particle structure of nuclei; relativistic descriptions of nuclear structure and scattering; nuclear structure at high excitation; advances in nuclear astrophysics; properties of nuclear material; the earliest moments of the universe; and pions and spin excitations in nuclei.

  6. NUCLEAR ENERGY PERGAMON Annals of Nuclear Energy 27 (2000) 138551398

    E-print Network

    Pázsit, Imre

    2000-01-01

    annafs of NUCLEAR ENERGY PERGAMON Annals of Nuclear Energy 27 (2000) 138551398 www-4549(00)00033-5 #12;1386 I. Phi!, V. Arzhanov. /Annals qf Nuclear Energy 27 (2000) 1385-1398 subcritical systems (ADS

  7. Labor and nuclear power

    Microsoft Academic Search

    R. Logan; D. Nelkin

    1980-01-01

    The AFL-CIO is officially pro-nuclear, but tensions within unions are taking issue over ideological differences. The Labor movement, having looked to nuclear power development as an economic necessity to avoid unemployment, has opposed efforts to delay construction or close plants. As many as 42% of union members or relatives of members, however, were found to oppose new power plants, some

  8. Why Go Nuclear?

    Microsoft Academic Search

    Abdullah bin Zayed Al Nahyan; Kamal J. Araj; Nabil Fahmy; Somporn Chongkum

    2008-01-01

    Much has been made of the global expansion of nuclear power. While experts discuss the pros and cons, countries are moving forward with their plans to build new plants. Of all the energy technologies available, why nuclear?Perspectives from the United Arab Emirates, Jordan, Egypt and Thailand

  9. High energy nuclear structures

    SciTech Connect

    Boguta, J.; Kunz, J.

    1984-03-09

    In conventional nuclear physics the nucleus is described as a non-relativistic many-body system, which is governed by the Schroedinger equation. Nucleons interact in this framework via static two-body potentials, mesonic degrees of freedom are neglected. An alternative description of nuclear physics in terms of a relativistic field theory has been developed by Walecka. The model Lagrangian containing baryons, sigma-mesons and ..omega..-mesons was subsequently extended to include also ..pi..-mesons and rho-mesons. An essential feature of such a nuclear Lagrangian is its renormalizability. In addition to the description of known nuclear structure the field theoretical approach may reveal entirely new nuclear phenomena, based on the explicit treatment of mesonic degrees of freedom. The existence of such abnormal nuclear states was proposed by Lee and Wick employing the sigma-model Lagrangian. There the non-linearity of the meson field equations allows for soliton solutions in the presence of nucleons, in particular the sigma-field may exhibit a kink. Different types of soliton solutions occur in gauge theories with hidden symmetries. In the phenomenological Lagrangian the rho-meson is described by a non-abelian gauge field, that acquires its mass spontaneously due to the non-vanishing vacuum expectation value of a Higgs field. A general ansatz for soliton solutions of such a gauge theory was given by Dashen et al. A specific solution and its possible implications for nuclear physics like anomalous nuclear states were discussed by Boguta.

  10. Vertical nuclear proliferation.

    PubMed

    Sidel, Victor W

    2007-01-01

    All the nuclear-weapon states are working to develop new nuclear-weapon systems and upgrade their existing ones. Although the US Congress has recently blocked further development of small nuclear weapons and earth-penetrating nuclear weapons, the United States is planning a range of new warheads under the Reliable Replacement Warhead programme, and renewing its nuclear weapons infrastructure. The United Kingdom is spending 1 billion pounds sterling on updating the Atomic Weapons Establishment at Aldermaston, and about 20 billion pounds sterling on replacing its Vanguard submarines and maintaining its Trident warhead stockpile. The US has withdrawn from the Anti-Ballistic Missile Treaty and plans to install missile defence systems in Poland and the Czech Republic; Russia threatens to upgrade its nuclear countermeasures. The nuclear-weapon states should comply with their obligations under Article VI of the Non-Proliferation Treaty, as summarised in the 13-point plan agreed at the 2000 NPT Review Conference, and they should negotiate a Nuclear Weapons Convention. PMID:17987977

  11. Nuclear energy related research

    NASA Astrophysics Data System (ADS)

    Rintamaa, R.

    1992-05-01

    The annual Research Program Plan describes publicly funded nuclear energy related research to be carried out mainly at the Technical Research Center of Finland (VTT) in 1992. The research is financed primarily by the Ministry of Trade and Industry (KTM), the Finnish Center for Radiation and Nuclear Safety (STUK), and VTT itself. Other research institutes, utilities, and industry also contribute to many projects.

  12. Radionuclides and Nuclear Waste

    NSDL National Science Digital Library

    David M. Sherman

    This resource is a 9-page PDF document that is part of an environmental geochemistry course taught by Dr. David Sherman at the University of Bristol. Topics covered include uranium, strontium, radon, and cesium geochemistry, radioactive decay, sources and uses of nuclear fuel, actinide geochemistry, and the composition of and problems associated with nuclear waste. Informative diagrams accompany the text.

  13. Israel's nuclear ambiguity

    Microsoft Academic Search

    A. Cohen; B. Frankel

    1987-01-01

    On October 5, 1986, the London Sunday Times published details of secret Israeli nuclear weapons manufacturing, indicating that over the past 20 years Israel may have accumulated a nuclear arsenal of 100 to 200 weapons. While not entirely new, these recent revelations, in contrast to past information, are attributed to an identifiable source: Mordechai Vanunu, a former technician in Israel's

  14. Nuclear Medicine CT Angiography

    E-print Network

    Ford, James

    . Understand the indications for exercise treadmill testing and specific nuclear cardiology tests, safe use patient and learn the importance of physical and pharmacologic stress in nuclear cardiology 3. Interpret angiography studies. 5. Safely conduct exercise tests and interpret exercise electrocardiograms 6. Develop

  15. Under the Nuclear Umbrella.

    ERIC Educational Resources Information Center

    Williams, Leon F.

    1987-01-01

    Entertains the thesis that social work has a stake in the technological-humanistic debate and should greet the recent and spectacular technological failures with protest and alarm. Discusses relationship of nuclear issue and social work, effects of nuclear issue on children, and Chernobyl. Advocates pacifism, activism, and a coherent conception of…

  16. NUCLEAR PLANT OPERATIONS AND

    E-print Network

    Pázsit, Imre

    NUCLEAR PLANT OPERATIONS AND CONTROL KEYWORDS: moderator temper- ature coefficient, reactivity co reactor Unit 4 of the Ringhals Nuclear Power Plant (Sweden) during fuel cycle 16 is analyzed, 2002 A measurement of the at-power moderator tempera- ture coefficient (MTC) at the pressurized water

  17. Nuclear Taskforce Summation.

    ERIC Educational Resources Information Center

    1979

    At the end of 1978, there were approximately 230 nuclear-fueled electric generating plants around the world; 72 of these were in the United States. Each plant requires an operations-and-maintenance workforce of 92 people, and attrition occurs at a rate of 8% per year. Requirements for a nuclear taskforce and job training, in view of current…

  18. NUCLEAR PLANT OPERATIONS AND

    E-print Network

    Demazière, Christophe

    NUCLEAR PLANT OPERATIONS AND CONTROL KEYWORDS: moderator temper ature coefficient, reactivity co reactor Unit 4 of the Ringhals Nuclear Power Plant (Sweden) during fuel cycle 16 is analyzed, 2002 A measurement of the at-power moderator tempera ture coefficient (MTC) at the pressurized water

  19. Nuclear Power Plant Technician

    ERIC Educational Resources Information Center

    Randall, George A.

    1975-01-01

    The author recognizes a body of basic knowledge in nuclear power plant technoogy that can be taught in school programs, and lists the various courses, aiming to fill the anticipated need for nuclear-trained manpower--persons holding an associate degree in engineering technology. (Author/BP)

  20. Nuclear Power Plants. Revised.

    ERIC Educational Resources Information Center

    Lyerly, Ray L.; Mitchell, Walter, III

    This publication is one of a series of information booklets for the general public published by the United States Atomic Energy Commission. Among the topics discussed are: Why Use Nuclear Power?; From Atoms to Electricity; Reactor Types; Typical Plant Design Features; The Cost of Nuclear Power; Plants in the United States; Developments in Foreign…

  1. Nuclear Pulse Propulsion

    Microsoft Academic Search

    J. C. Nance

    1965-01-01

    A general technical description and programmatic review of nuclear pulse propulsion activities over the last decade is presented. Major problem areas are reviewed together with the status of current research efforts. Sufficient technical information is now available to predict achievable propulsion systems performance with a rather high degree of confidence based on current materials and nuclear technology. Expected performance is

  2. Nuclear Radiation Detectors

    Microsoft Academic Search

    G. A. Morton

    1962-01-01

    Nuclear radiation detectors are required in all the major fields of nuclear science and technology. They fall into two principal categories, single element detectors and imaging detectors. Single element detectors can be classified into four types, based upon their physical mode of operation. These are 1) Scintillation counters, 2) Gas ionization detectors, a) Ionization chambers, b) Proportional counters, c) Geiger-Mueller

  3. Anomalies of nuclear criticality

    SciTech Connect

    Clayton, E.D.

    1979-06-01

    During the development of nuclear energy, a number of apparent anomalies have become evident in nuclear criticality. Some of these have appeared in the open literature and some have not. Yet, a naive extrapolation or application of existing data, without knowledge of the anomalies, could lead to potentially serious consequences. This report discusses several of these anomalies.

  4. Nuclear Arms Control Treaties

    NSDL National Science Digital Library

    Christopher Griffith

    This section contains summaries of all the major arms-control treaties including: Limited Test Ban Treaty, Nuclear Non-Proliferation Treaty, Strategic Arms Limitation Treaty I (Interim Agreement), Anti-Ballistic Missile Treaty, Threshold Test Ban Treaty, Intermediate-Range Nuclear Forces Treaty - INF, Strategic Arms Reduction Treaty, Comprehensive Test Ban Treaty and Strategic Offensive Reductions Treaty.

  5. Nuclear fuel element

    SciTech Connect

    Matsumura, K.; Ochi, Y.; Ozaki, S.

    1980-11-18

    A nuclear fuel element is described which comprises a fuel body formed of nuclear fuel material and a clad for covering the fuel body. The clad is formed of an austenitic stainless steel containing silicon, titanium and carbon, respectively, in a controlled quantity.

  6. Nuclear ?-decay. II

    Microsoft Academic Search

    Lothar Schülke

    1964-01-01

    A general expression for the beta-decay transition amplitude is evaluated, using the decomposition of the nuclear current matrix element into beta-decay form factors as obtained in the previous paper. For the electron radial wave functions the finite nuclear size is taken into account. Formulas for the spectrum shape factor and the polarisation are calculated.

  7. Nuclear axion decay

    Microsoft Academic Search

    Augusto Barroso; Nimai C. Mukhopadhyay

    1981-01-01

    Nuclear decays are shown to offer a large number of attractive possibilities to search for axions. Some pure isoscalar M1 transitions in light nuclei could have a ratio of axion to gamma decay widths as large as 10-2. RADIOACTIVITY Quantum chromodynamics, axions, nuclear decays.

  8. Nuclear physics and cosmology

    SciTech Connect

    Coc, Alain [Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM), CNRS/IN2P3, Université Paris Sud 11, UMR 8609, Bâtiment 104, F-91405 Orsay Campus (France)

    2014-05-09

    There are important aspects of Cosmology, the scientific study of the large scale properties of the universe as a whole, for which nuclear physics can provide insights. Here, we will focus on Standard Big-Bang Nucleosynthesis and we refer to the previous edition of the School [1] for the aspects concerning the variations of constants in nuclear cosmo-physics.

  9. Nuclear magnetic resonance gyroscope

    Microsoft Academic Search

    F. A. Karwacki; J. Griffin

    1985-01-01

    A nuclear magnetic resonance gyroscope which derives angular rotation from the phases of precessing nuclear moments utilizes a single-resonance cel situated in the center of a uniform dc magnetic field. The field is generated by current flow through a circular array of coils between parallel plates. It also utilizes a pump and readout beam and associated electronics for signal processing

  10. Nuclear Power Plants

    MedlinePLUS

    ... The potential danger from an accident at a nuclear power plant is exposure to radiation. This exposure could come from the release of ... Power Plant Emergency If an accident at a nuclear power plant were to release radiation in your area, local authorities would activate warning ...

  11. Nuclear Shuttle in Flight

    NASA Technical Reports Server (NTRS)

    1970-01-01

    This 1970 artist's concept shows a Nuclear Shuttle in flight. As envisioned by Marshall Space Flight Center Program Development engineers, the Nuclear Shuttle would deliver payloads to lunar orbit or other destinations then return to Earth orbit for refueling and additional missions.

  12. ECONOMICS OF NUCLEAR SHIPS

    Microsoft Academic Search

    T. J. Connolly; J. Jr. Wilhelmsen

    1958-01-01

    The great success of the U. S. submarine Nautilus and the Suez crisis, ; which showed what advantages might arise from large atom-powered tankers, are two ; events which have spurred the nations of the world to investigate the feasibility ; of nuclear power for propulsion at sea. The techniques feasibility of nuclear-; powered sea vessels has been clearly established

  13. Nuclear power installations. [GCR

    Microsoft Academic Search

    1976-01-01

    In a nuclear power installation comprising a fluid-cooled nuclear reactor, main boilers and main coolant circulators driven by steam turbines to circulate coolant fluid through the reactor core and the main boilers, the circulator-driving steam turbines are driven by steam from auxiliary boilers which are also heated by the hot reactor coolant. This steam, after then being reheated by the

  14. Talk About Nuclear Power

    ERIC Educational Resources Information Center

    Tremlett, Lewis

    1976-01-01

    Presents an overview of the relation of nuclear power to human health and the environment, and discusses the advantages and disadvantages of nuclear power as an energy source urging technical educators to inculcate an awareness of the problems associated with the production of energy. Describes the fission reaction process, the hazards of…

  15. Nuclear politics in Sweden

    Microsoft Academic Search

    Abrams

    1979-01-01

    Political problems have plagued nuclear development in Sweden, which imports 75% of its energy and all of its uranium even though it has 12% of the world's known U reserves. Communities have consistently vetoed mining projects, and a 1973 moratorium on nuclear power was passed pending a thorough study and creating an atmosphere that has been directly responsible for the

  16. Nuclear plant temperature instrumentation

    Microsoft Academic Search

    H. M. Hashemian; Jin Jiang

    2009-01-01

    Most critical process temperatures in nuclear power plants are measured using resistance temperature detectors (RTDs) and thermocouples. In addition to excellent reliability and accident survivability, nuclear safety-related RTDs are expected to have good calibration and fast dynamic response time, as these characteristics are important to plant safety and economy. In plants where RTDs are installed in thermowells in the primary

  17. Nuclear physics: Macroscopic aspects

    SciTech Connect

    Swiatecki, W.J.

    1993-12-01

    A systematic macroscopic, leptodermous approach to nuclear statics and dynamics is described, based formally on the assumptions {h_bar} {yields} 0 and b/R << 1, where b is the surface diffuseness and R the nuclear radius. The resulting static model of shell-corrected nuclear binding energies and deformabilities is accurate to better than 1 part in a thousand and yields a firm determination of the principal properties of the nuclear fluid. As regards dynamics, the above approach suggests that nuclear shape evolutions will often be dominated by dissipation, but quantitative comparisons with experimental data are more difficult than in the case of statics. In its simplest liquid drop version the model exhibits interesting formal connections to the classic astronomical problem of rotating gravitating masses.

  18. World nuclear outlook 1995

    SciTech Connect

    NONE

    1995-09-29

    As part of the EIA program to provide energy information, this analysis report presents the current status and projections through 2015 of nuclear capacity, generation, and fuel cycle requirements for all countries in the world using nuclear power to generate electricity for commercial use. It also contains information and forecasts of developments in the uranium market. Long-term projections of US nuclear capacity, generation, and spent fuel discharges for two different scenarios through 2040 are developed for the Department of Energy`s Office of Civilian Radioactive Waste Management (OCRWM). In turn, the OCRWM provides partial funding for preparation of this report. The projections of uranium requirements are provided to the Organization for Economic Cooperation and Development (OECD) for preparation of the Nuclear Energy Agency/OECD report, Summary of Nuclear Power and Fuel Cycle Data in OECD Member Countries.

  19. World nuclear outlook 1994

    SciTech Connect

    NONE

    1994-12-01

    As part of the EIA program to provide energy information, this analysis report presents the current status and projections through 2010 of nuclear capacity, generation, and fuel cycle requirements for all countries in the world using nuclear power to generate electricity for commercial use. It also contains information and forecasts of developments in the uranium market. Long-term projections of US nuclear capacity, generation, and spent fuel discharges for three different scenarios through 2040 are developed for the Department of Energy`s Office of Civilian Radioactive Waste Management (OCRWM). In turn, the OCRWM provides partial funding for preparation of this report. The projections of uranium requirements are provided to the Organization for Economic Cooperation and Development (OECD) for preparation of the Nuclear Energy Agency/OECD report, Summary of Nuclear Power and Fuel Cycle Data in OECD Member Countries.

  20. Nuclear illusion and reality

    SciTech Connect

    Zuckerman, S.

    1982-01-01

    Lord Zuckerman describes how we can extricate ourselves from nuclear dread. Reviewing the history, technology, the strategies and threats of nuclear weaponry, he argues that the inability to unlearn how to split the atom does not mean there is either sanity or safety in further stockpiling or refining of nuclear weapons. He challenges our beliefs that the use of tactical nuclear weapons in Europe cannot be kept from excalating, our fear of sudden superweapons and defenses, and the premise that scientists, technologists, and arms makers should keep the race going rather than the military because of their vested interests. Given the political will, he contends, a comprehensive ban should not be a difficult treaty to agree to, although efforts to slow down the nuclear arms race have been admittedly disappointing. 92 references.

  1. OECD Nuclear Energy Agency

    NSDL National Science Digital Library

    Based in Paris, the Nuclear Energy Agency (NEA) is a specialized agency within the Organisation for Economic Co-operation and Development (OECD) whose mission is to assist its member countries in "maintaining and further developing, through international co-operation, the scientific, technological and legal bases required for the safe, environmentally friendly and economical use of nuclear energy for peaceful purposes." At the site, visitors can download various policy papers, obtain basic facts about nuclear power and development in the member countries, and read the latest press releases from the NEA. The homepage also serves as a basic introduction to the current activities of the organization, such as the upcoming International Youth Nuclear Congress, its work on nuclear legislation in Eastern Europe, and its latest reports on such timely topics as the regulatory control of radioactive waste management. Visitors may also opt to sign up to receive the latest publications and newsletters from the NEA electronically on this site.

  2. Geophysical Studies of the Las Vegas Urban Corridor

    NSDL National Science Digital Library

    The Geophysical Studies of the Las Vegas Urban Corridor Area are part of an integrated effort to "geologically characterize the seismic hazards, water resources, and crustal structure of this rapidly growing urban corridor" by the USGS. The informational Web site contains a gravity map of the Las Vegas region, an aeromagnetic map, and a publications link with a list of over a dozen references. Seven of these publications are freely available for download with titles such as "Aeromagnetic Survey of the Amargosa Desert," "Nevada and California: A Tool for Understanding Near-Surface Geology," and Hydrology and Principal Facts for Gravity Stations in the Vicinity of Coyote Spring Valley, Nevada, with Initial Gravity Modeling Results." An interesting collection of unique resources, the site should be of interest to professionals in a wide variety of fields.

  3. The nuclear dynamo; Can a nuclear tornado annihilate nations

    SciTech Connect

    McNally, J.R. Jr.

    1991-01-01

    This paper reports on the development of the hypothesis of a nuclear dynamo for a controlled nuclear fusion reactor. This dynamo hypothesis suggests properties for a nuclear tornado that could annihilate nations if accidentally triggered by a single high yield to weight nuclear weapon detonation. The formerly classified reports on ignition of the atmosphere, the properties of a nuclear dynamo, methods to achieve a nuclear dynamo in the laboratory, and the analogy of a nuclear dynamo to a nuclear tornado are discussed. An unclassified international study of this question is urged.

  4. US nuclear weapons policy

    SciTech Connect

    May, M.

    1990-12-05

    We are closing chapter one'' of the nuclear age. Whatever happens to the Soviet Union and to Europe, some of the major determinants of nuclear policy will not be what they have been for the last forty-five years. Part of the task for US nuclear weapons policy is to adapt its nuclear forces and the oganizations managing them to the present, highly uncertain, but not urgently competitive situation between the US and the Soviet Union. Containment is no longer the appropriate watchword. Stabilization in the face of uncertainty, a more complicated and politically less readily communicable goal, may come closer. A second and more difficult part of the task is to deal with what may be the greatest potential source of danger to come out of the end of the cold war: the breakup of some of the cooperative institutions that managed the nuclear threat and were created by the cold war. These cooperative institutions, principally the North Atlantic Treaty Organization (NATO), the Warsaw Pact, the US-Japan alliance, were not created specifically to manage the nuclear threat, but manage it they did. A third task for nuclear weapons policy is that of dealing with nuclear proliferation under modern conditions when the technologies needed to field effective nuclear weapons systems and their command and control apparatus are ever more widely available, and the leverage over some potential proliferators, which stemmed from superpower military support, is likely to be on the wane. This paper will make some suggestions regarding these tasks, bearing in mind that the unsettled nature of that part of the world most likely to become involved in nuclear weapons decisions today must make any suggestions tentative and the allowance for surprise more than usually important.

  5. Study of Nuclear Physics for Nuclear Fusion

    Microsoft Academic Search

    Xing Z. Li; Bing Liu; Xian Z. Ren; Jian Tian; Wei Z. Yu; Dong X. Cao

    2000-01-01

    Based on the concept of “damp matching” [1] and the famous d + t fusion data, a conventional quantum mechanics calculation shows that the plasma fusion, muon-catalyzed fusion, and the low-energy nuclear reaction are essentially same in the sense of resonant tunneling through the Coulomb barrier. The good agreement between theory and experimental data justifies the selectivity in resonant tunneling,

  6. Nuclear Powerplant Safety: Source Terms. Nuclear Energy.

    ERIC Educational Resources Information Center

    Department of Energy, Washington, DC. Nuclear Energy Office.

    There has been increased public interest in the potential effects of nuclear powerplant accidents since the Soviet reactor accident at Chernobyl. People have begun to look for more information about the amount of radioactivity that might be released into the environment as a result of such an accident. When this issue is discussed by people…

  7. Nuclear war, nuclear proliferation, and their consequences

    SciTech Connect

    Sanruddin, A.K.

    1986-01-01

    The proceedings of a colloquium convened by the Groupe de Bellerive offers the contributions of Carl Sagan, Gabriel Garcia Marquez, Kenneth Galbraith, Pierre Trudeau, Edward Kennedy, and other eminent scientists, politicians, and strategists on the subject of the proliferation of nuclear weaponry and its potential ramifications.

  8. Las Trans: Negotiating Gender, Personhood, and Citizenship in Chile

    Microsoft Academic Search

    Sydney A. Hare

    2012-01-01

    “Las Trans,” a group of male-to-female transgender residents living in Arica, Chile, challenge the strict dual-sex, dual-gender system of Chile’s family-oriented society. Chile presents an especially interesting case when analyzing the social position of sexual minorities due to the country’s historically strong ties to the Catholic Church, and, on a political level, the experience of 17 years of dictatorship during

  9. ATLAS DE LAS AVES EN INVIERNO Servicio de Vida Silvestre

    E-print Network

    Carrascal, Luis M.

    ATLAS DE LAS AVES EN INVIERNO EN ESPA�A Servicio de Vida Silvestre Subdirección General de Medio? INTRODUCCI�N Gracias a los elevados niveles de organización y calidad técnica alcanzados, los atlas dos atlas editados por Purroy (1997) y Martí y Del Moral (2003), que durante la última década se han

  10. CURSO: ADMINISTRACIN ELECTRNICA. IMPLANTACIN DE LAS NUEVAS TECNOLOGAS EN LA

    E-print Network

    Rey Juan Carlos, Universidad

    ;CAMPUS VIRTUAL CALENDARIO AULA 15 de abril al 14 de Mayo 2013 (9 de mayo de 10h a 12h taller presencial Administración y Servicios de la URJC Lugar de celebración: Campus Virtual Número de horas lectivas: 21 horas convocatoria se ruega de los asistentes la debida puntualidad a cada una de las clases. Horario y Aula #12

  11. UNIVERSITY OF NEVADA, LAS VEGAS School of Social Work

    E-print Network

    Ahmad, Sajjad

    UNIVERSITY OF NEVADA, LAS VEGAS School of Social Work SWK 410.2 & SWK 410.2S Professor: Margaret Oakes, Ph.D. SOCIAL WORK PRACTICE I LCSW (Ca.), LMSW-ACP (Tx) Sprin 2003 Office Hours: Mon. 1:30-2:30, 5.M. Or by appointment Credits: 3 Email: moakes@ccmail.nevada.edu Tel: (702) 895-1222 COURSE DESCRIPTION Social Work

  12. Solar hot water system installed at Las Vegas, Nevada

    NASA Technical Reports Server (NTRS)

    1981-01-01

    A solar energy hot water system installed in a motor inn at Las Vegas, Nevada is described. The inn is a three story building with a flat roof for installation of the solar panels. The system consists of 1,200 square feet of liquid flat plate collectors, a 2,500 gallon insulated vertical steel storage tank, two heat exchangers, and pumps and controls. The system was designed to supply approximately 74 percent of the total hot water load.

  13. Chemistry and kinetics of LAS acid thermal decomposition

    Microsoft Academic Search

    David W. Roberts; Séverine Lejeune

    2002-01-01

    The emission of sulfur dioxide (SO2) from linear alkylbenzene sulfonate (LAS) acid (LASH) at high temperatures has been studied. Rate constants and Arrhenius\\u000a parameters have been determined, enabling estimation of the amount of SO2 evolved under any time\\/temperature combination for risk assessment purposes. Further analysis of the kinetic data and comparison\\u000a with earlier molecular modeling work on the mechanism of

  14. Supporting Our Nation's Nuclear Industry

    ScienceCinema

    Lyons, Peter

    2013-05-29

    On the 60th anniversary of the world's first nuclear power plant to produce electricity, Assistant Secretary for Nuclear Energy Peter Lyons discusses the Energy Department's and the Administration's commitment to promoting a nuclear renaissance in the United States.

  15. THz Dynamic Nuclear Polarization NMR

    E-print Network

    Nanni, Emilio Alessandro

    Dynamic nuclear polarization (DNP) increases the sensitivity of nuclear magnetic resonance (NMR) spectroscopy by using high frequency microwaves to transfer the polarization of the electrons to the nuclear spins. The ...

  16. Radiological Effects of Nuclear War.

    ERIC Educational Resources Information Center

    Shapiro, Charles S.

    1988-01-01

    Described are the global effects of nuclear war. Discussed are radiation dosages, limited nuclear attacks, strategic arms reductions, and other results reported at the workshop on nuclear war issues in Moscow in March 1988. (CW)

  17. Student Reactions to Nuclear Education.

    ERIC Educational Resources Information Center

    Christie, Daniel J.; Nelson, Linden

    1988-01-01

    Reports on a study that focused on the psychological impact of nuclear education curriculum on middle school students. Concluded that instruction about nuclear issues rarely increases students' fear or worry about nuclear war. (RT)

  18. Introduccion Tecnica de backtracking Recorridos secuenciales Recorridos paralelos Conclusiones y trabajos futuros Tecnicas de autooptimizacion en recorridos de

    E-print Network

    Giménez, Domingo

    programaci´on de los usuarios no expertos. #12;Introducci´on T´ecnica de backtracking Recorridos secuenciales dado, programando una t´ecnica particular. Facilitan la programaci´on de los usuarios no expertos. #12. Facilitan la programaci´on de los usuarios no expertos. #12;Introducci´on T´ecnica de backtracking

  19. TECNICA ENDOSCOPICA E TECNICA A CIELO APERTO PER IL TRATTAMENTO DEL DITO A SCATTO: RISULTATI A CONFRONTO

    Microsoft Academic Search

    E. CAVALLI; L. PEGOLI; P. CORTESE; A. GHEZZI; G. PAJARDI

    SUMMARY According to our experience and reports found in the literature, the main complaint of patients after an open trigger finger release is pain persistence at the incision site and, in a few cases, scar retraction. For this reason, endoscopic trigger finger release has been introduced in our Unit. In this prospective clinical trial, we operated two consecutive groups of

  20. GIS methodology for quantifying channel change in Las Vegas, Nevada

    USGS Publications Warehouse

    Buckingham, S.E.; Whitney, J.W.

    2007-01-01

    This study applies spatial analyses to examine the consequences of accelerated urban expansion on a hydrologic system over a period of 24 years. Three sets of historical aerial photos are used in a GIS analysis to document the geomorphic history of Las Vegas Wash, which drains the rapidly growing Las Vegas urban area in southern Nevada. New spatial techniques are introduced to make quantitative measurements of the erosion at three specific time intervals in the hydrologic evolution of the channel and floodplain. Unlike other erosion studies that use two different elevation surfaces to assess erosion, this study used a single elevation surface to remove systematic and nonsystemic elevation errors. The spatial analysis quantifies channel changes for discrete time periods, calculates erosion volumes, and provides a foundation to examine how the specific mechanisms related to urban expansion have affected Las Vegas Wash. The erosion calculated over 24 years is the largest documented sediment loss attributed to the effect of rapid urban growth. ?? 2007 American Water Resources Association.

  1. T-2 Nuclear Information Service

    NSDL National Science Digital Library

    The T-2 Nuclear Information Service Web Site is presented by Los Alamos National Laboratory, which is operated by the University of California for the US Department of Energy. The site "concentrates on nuclear modeling, nuclear data, cross sections, nuclear masses, ENDF, NJOY data processing, nuclear astrophysics, radioactivity, radiation shielding, data for medical radiotherapy, data for high-energy accelerator applications, data and codes for fission and fusion systems, and more." Visitors can tour the site, browse and view the data, see computer codes for nuclear data, or look at relevant publications (.ps format) about nuclear data and techniques for working with nuclear data.

  2. Source Water Assessment for the Las Vegas Valley Surface Waters

    NASA Astrophysics Data System (ADS)

    Albuquerque, S. P.; Piechota, T. C.

    2003-12-01

    The 1996 amendment to the Safe Drinking Water Act of 1974 created the Source Water Assessment Program (SWAP) with an objective to evaluate potential sources of contamination to drinking water intakes. The development of a Source Water Assessment Plan for Las Vegas Valley surface water runoff into Lake Mead is important since it will guide future work on source water protection of the main source of water. The first step was the identification of the watershed boundary and source water protection area. Two protection zones were delineated. Zone A extends 500 ft around water bodies, and Zone B extends 3000 ft from the boundaries of Zone A. These Zones extend upstream to the limits of dry weather flows in the storm channels within the Las Vegas Valley. After the protection areas were identified, the potential sources of contamination in the protection area were inventoried. Field work was conducted to identify possible sources of contamination. A GIS coverage obtained from local data sources was used to identify the septic tank locations. Finally, the National Pollutant Discharge Elimination System (NPDES) Permits were obtained from the State of Nevada, and included in the inventory. After the inventory was completed, a level of risk was assigned to each potential contaminating activity (PCA). The contaminants of concern were grouped into five categories: volatile organic compounds (VOCs), synthetic organic compounds (SOCs), inorganic compounds (IOCs), microbiological, and radionuclides. The vulnerability of the water intake to each of the PCAs was assigned based on these five categories, and also on three other factors: the physical barrier effectiveness, the risk potential, and the time of travel. The vulnerability analysis shows that the PCAs with the highest vulnerability rating include septic systems, golf courses/parks, storm channels, gas stations, auto repair shops, construction, and the wastewater treatment plant discharges. Based on the current water quality data (prior to treatment), the proximity of Las Vegas Wash to the intake, and the results of the vulnerability analysis of potential contaminating activities, it is determined that the drinking water intake is at a Moderate level of risk for VOC, SOC, and microbiological contaminants. The drinking water intake is at a High level of risk for IOC contaminants. Vulnerability to radiological contamination is Moderate. Source water protection in the Las Vegas Valley is strongly encouraged because of the documented influence of the Las Vegas Wash on the quality of the water at the intake.

  3. Nuclear Material Management Abstract

    SciTech Connect

    Jesse C. Schreiber

    2007-07-10

    Nevada Test Site (NTS) has transitioned from its historical and critical role of weapons testing to another critical role for the nation. This new role focuses on being a integral element in solving the multiple challenges facing the National Nuclear Security Administration (NNSA) with nuclear material management. NTS is positioned to be a solution for other NNSA sites challenged with safe nuclear materials storage and disposition. NNSA, with site involvement, is currently transforming the nuclear stockpile and supporting infrastructure to meet the 2030 vision. Efforts are under way to consolidate and modernize the production complex . With respect to the nuclear material stockpile, the NNSA sites are currently reducing the complex nuclear material inventory through disposition and consolidation. This includes moving material from other sites to NTS. State of the art nuclear material management and control practices at NTS are essential for NTS to ensure that assigned activities are accomplished in a safe, secure, efficient, and environmentally responsible manner. NTS activities and challenges will be addressed.

  4. Evaluated Nuclear Data

    SciTech Connect

    Oblozinsky, P.; Oblozinsky,P.; Herman,M.; Mughabghab,S.F.

    2010-10-01

    This chapter describes the current status of evaluated nuclear data for nuclear technology applications. We start with evaluation procedures for neutron-induced reactions focusing on incident energies from the thermal energy up to 20 MeV, though higher energies are also mentioned. This is followed by examining the status of evaluated neutron data for actinides that play dominant role in most of the applications, followed by coolants/moderators, structural materials and fission products. We then discuss neutron covariance data that characterize uncertainties and correlations. We explain how modern nuclear evaluated data libraries are validated against an extensive set of integral benchmark experiments. Afterwards, we briefly examine other data of importance for nuclear technology, including fission yields, thermal neutron scattering and decay data. A description of three major evaluated nuclear data libraries is provided, including the latest version of the US library ENDF/B-VII.0, European JEFF-3.1 and Japanese JENDL-3.3. A brief introduction is made to current web retrieval systems that allow easy access to a vast amount of up-to-date evaluated nuclear data for nuclear technology applications.

  5. Nuclear (multi-)fragmentation

    NASA Astrophysics Data System (ADS)

    Raduta, Adriana R.

    2013-04-01

    Nuclear (multi-)fragmentation, defined as the nuclear decay mechanism in which at least three intermediate mass fragments (Z >= 3) are produced, is the disassembly phenomenon specific to hot nuclear matter produced in nuclear collisions at beam energies of 20-100 MeV/nucleon. Considered as the manifestation of the liquid-gas phase transition predicted by nuclear matter mean-field models or an instrument to address the nuclear equation of state, it enjoys for thirty years a vivid scientific interest and motivates the construction of more and more high-performance 4?-detectors allowing for almost complete reaction characterisation on an event-by-event basis. Over the years, many experimental signatures of first- and second-order phase transitions have been proposed and identified in both central and peripheral collisions. Despite their seemingly puzzling messages, coherent understanding of multifragmentation is possible accounting for statistical ensemble inequivalence and finite size effects. Two particular situations will be discussed in detail. The first one corresponds to a multifragmenting medium size nucleus where the expected first-order phase transition is blurred by surface effects. The second one corresponds to an infinitely large system, the clusterized nuclear matter thought to constitute the main sector of baryonic matter in (proto-)neutron stars, where the first-order phase transition is quenched by Coulomb effects. In both cases statistical models with cluster degrees of freedom have been employed.

  6. 75 FR 3497 - Entergy Nuclear Operations, Inc., Entergy Nuclear Indian Point 2, LLC, Entergy Nuclear Indian...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-21

    ...through the ``Contact Us'' link located on the...Commission, U.S. Nuclear Regulatory Commission...of section 134 of the Nuclear Waste Policy Act of 1982 (NWPA...Capacity at Civilian Nuclear Power...

  7. 75 FR 39057 - Entergy Nuclear Operations, Inc.; Entergy Nuclear Vermont Yankee, LLC; Vermont Yankee Nuclear...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-07

    ...licensee must bring the nuclear reactor to a ``cold-shut-down...General Design Criteria for Nuclear Power Plants,'' to 10 CFR Part 50, Criterion 60, ``Control of Releases of Radioactive...Director of the Office of Nuclear Reactor...

  8. Virtual nuclear weapons

    SciTech Connect

    Pilat, J.F.

    1997-08-01

    The term virtual nuclear weapons proliferation and arsenals, as opposed to actual weapons and arsenals, has entered in recent years the American lexicon of nuclear strategy, arms control, and nonproliferation. While the term seems to have an intuitive appeal, largely due to its cyberspace imagery, its current use is still vague and loose. The author believes, however, that if the term is clearly delineated, it might offer a promising approach to conceptualizing certain current problems of proliferation. The first use is in a reference to an old problem that has resurfaced recently: the problem of growing availability of weapon-usable nuclear materials in civilian nuclear programs along with materials made `excess` to defense needs by current arms reduction and dismantlement. It is argued that the availability of these vast materials, either by declared nuclear-weapon states or by technologically advanced nonweapon states, makes it possible for those states to rapidly assemble and deploy nuclear weapons. The second use has quite a different set of connotations. It is derived conceptually from the imagery of computer-generated reality. In this use, one thinks of virtual proliferation and arsenals not in terms of the physical hardware required to make the bomb but rather in terms of the knowledge/experience required to design, assemble, and deploy the arsenal. Virtual weapons are a physics reality and cannot be ignored in a world where knowledge, experience, materials, and other requirements to make nuclear weapons are widespread, and where dramatic army reductions and, in some cases, disarmament are realities. These concepts are useful in defining a continuum of virtual capabilities, ranging from those at the low end that derive from general technology diffusion and the existence of nuclear energy programs to those at the high end that involve conscious decisions to develop or maintain militarily significant nuclear-weapon capabilities.

  9. Nuclear Regulatory Commission issuances

    SciTech Connect

    NONE

    1996-03-01

    This document is the March 1996 listing of NRC issuances. Included are: (1) NRC orders granting Cleveland Electric Illuminating Company`s petition for review of the ASLB order LBP-95-17, (2) NRC orders relating to the potential disqualification of two commissioners in the matter of the decommissioning of Yankee Nuclear Power Station, (3) ASLB orders pertaining to the Oncology Services Corporation, (4) ASLB orders pertaining to the Radiation Oncology Center, (5) ASLB orders pertaining to the Yankee Nuclear Power Station, and (6) Director`s decision pertaining to the Yankee Nuclear Power Station.

  10. Mobile nuclear power systems

    NASA Astrophysics Data System (ADS)

    Andersson, Bengt

    1988-11-01

    Nuclear reactors where the energy comes from nuclear fission and isotopic generators utilizing the energy of the decay of suitable isotopes are discussed. The reactors are used as power sources on board nuclear submarines and other warships, as well as in space and in remote places. Their thermal power ranges from 30 KWth in a satellite to 175 MWth on board an aircraft carrier. Isotopic generators are suitable only for small power demands and are used on board satellites and spaceprobes, automatic weather stations, lighthouses, and marine installations for navigation and observation.

  11. Fictions of nuclear disaster

    SciTech Connect

    Dowling, D.

    1987-01-01

    This work is critical study of literary interpretations of the nuclear holocaust. The author examines more than 250 stories and novels dealing with the theme of nuclear power and its devastating potential implications. Addressing such topics as the scientist and Armageddon, the role of religion, future evolution and mutation, and the postnuclear society, the author assesses the response of Bradbury, Lessing, Malamud, Shute, Huxley, Vonnegut, Heinlein, and others to the threat of nuclear apocalypse, with in-depth analyses of Alter Miller's A canticle for Leibowitz and Russell Hoban's Riddley Walker.

  12. Monitoring international nuclear activity

    SciTech Connect

    Firestone, R.B.

    2006-05-19

    The LBNL Table of Isotopes website provides primary nuclearinformation to>150,000 different users annually. We have developedthe covert technology to identify users by IP address and country todetermine the kinds of nuclear information they are retrieving. Wepropose to develop pattern recognition software to provide an earlywarning system to identify Unusual nuclear activity by country or regionSpecific nuclear/radioactive material interests We have monitored nuclearinformation for over two years and provide this information to the FBIand LLNL. Intelligence is gleaned from the website log files. Thisproposal would expand our reporting capabilities.

  13. Nuclear Medicine Annual, 1989

    SciTech Connect

    Freeman, L.M.; Weissmann, H.S.

    1989-01-01

    Among the highlights of Nuclear Medicine Annual, 1989 are a status report on the thyroid scan in clinical practice, a review of functional and structural brain imaging in dementia, an update on radionuclide renal imaging in children, and an article outlining a quality assurance program for SPECT instrumentation. Also included are discussions on current concepts in osseous sports and stress injury scintigraphy and on correlative magnetic resonance and radionuclide imaging of bone. Other contributors assess the role of nuclear medicine in clinical decision making and examine medicolegal and regulatory aspects of nuclear medicine.

  14. Advances in Nuclear Energy

    NASA Astrophysics Data System (ADS)

    Frois, B.

    2005-04-01

    This paper briefly reviews the next generations of nuclear reactors and the perspectives of development of nuclear energy. Advanced reactors will progressively replace the existing ones during the next two decades. Future systems of the fourth generation are planned to be built beyond 2030. These systems have been studied in the framework of the "Generation IV" International Forum. The goals of these systems is to have a considerable increase in safety, be economically competitive and produce a significantly reduced volume of nuclear wastes. The closed fuel cycle is preferred.

  15. Nuclear Science and Engineering

    NSDL National Science Digital Library

    This site, created by the Massachusetts Institute of Technology, provides the available courses in the Nuclear Science and Engineering department. Research and education in nuclear science and engineering first began at MIT in 1948. Despite having roots at MIT that span more than 60 years, nuclear engineering is relatively new compared to other engineering disciplines, and its many applications will benefit society in areas from healthcare and radiation detection to space exploration and advanced materials. This site explores all of areas and provides students and educators valuable insight and documents in the discipline.

  16. International Nuclear Safety Center

    NSDL National Science Digital Library

    The US Department of Energy's Argonne National Laboratory provides this site, highlighted by nuclear plants and material properties databases. The nuclear plants database can be searched by country, plant type, and operational status, as well as browsed by clickable map. Information retrieved may include location, type of reactor, controlling utility, and suppliers. The material properties database contains selected information on materials by type and property. In addition, there is a safety analysis results bibliographic database, with abstracts on literature (available in the INSC library) on Soviet-designed nuclear power plants. Note that the site is a work in progress and that some areas are not open to the public.

  17. Nuclear Cryogenic Propulsion Stage

    NASA Technical Reports Server (NTRS)

    Houts, Michael G.; Borowski, S. K.; George, J. A.; Kim, T.; Emrich, W. J.; Hickman, R. R.; Broadway, J. W.; Gerrish, H. P.; Adams, R. B.

    2012-01-01

    The fundamental capability of Nuclear Thermal Propulsion (NTP) is game changing for space exploration. A first generation Nuclear Cryogenic Propulsion Stage (NCPS) based on NTP could provide high thrust at a specific impulse above 900 s, roughly double that of state of the art chemical engines. Characteristics of fission and NTP indicate that useful first generation systems will provide a foundation for future systems with extremely high performance. The role of the NCPS in the development of advanced nuclear propulsion systems could be analogous to the role of the DC-3 in the development of advanced aviation. Progress made under the NCPS project could help enable both advanced NTP and advanced NEP.

  18. ABC's of Nuclear Science

    NSDL National Science Digital Library

    Produced by the Lawrence Berkeley National Laboratory, the ABC's of Nuclear Science site gives high school students and perhaps even entry level college students a good general overview of nuclear science. Through descriptions and illustrations, students get to explore nuclear structure; radioactivity; alpha, beta, and gamma decay; half-life; reactions; fusion; fission; cosmic rays; and antimatter. Although only a one-page lesson (except for the antimatter link), the site offers clickable definitions of various words and helpful diagrams that enhance the user's learning experience.

  19. Redefining Interrelationship between Nuclear Safety, Nuclear Security and Safeguards

    NASA Astrophysics Data System (ADS)

    Irie, Kazutomo

    Since the beginning of this century, the so-called 3Ss (Nuclear Safety, Nuclear Security and Safeguards) have become major regulatory areas for peaceful uses of nuclear energy. In order to rationalize the allocation of regulatory resources, interrelationship of the 3Ss should be investigated. From the viewpoint of the number of the parties concerned in regulation, nuclear security is peculiar with having “aggressors” as the third party. From the viewpoint of final goal of regulation, nuclear security in general and safeguards share the goal of preventing non-peaceful uses of nuclear energy, though the goal of anti-sabotage within nuclear security is rather similar to nuclear safety. As often recognized, safeguards are representative of various policy tools for nuclear non-proliferation. Strictly speaking, it is not safeguards as a policy tool but nuclear non-proliferation as a policy purpose that should be parallel to other policy purposes (nuclear safety and nuclear security). That suggests “SSN” which stands for Safety, Security and Non-proliferation is a better abbreviation rather than 3Ss. Safeguards as a policy tool should be enumerated along with nuclear safety regulation, nuclear security measures and trade controls on nuclear-related items. Trade controls have been playing an important role for nuclear non-proliferation. These policy tools can be called “SSST” in which Trade controls are also emphasized along with Safety regulation, Security measures and Safeguards.

  20. NUCLEAR ENERGY Annals of Nuclear Energy 32 (2005) 812842

    E-print Network

    Demazière, Christophe

    2005-01-01

    annals of NUCLEAR ENERGY Annals of Nuclear Energy 32 (2005) 812­842 www of Nuclear Energy 32 (2005) 812­842 background noise is present, this technique is useful to indicate.elsevier.com/locate/anucene Identification and localization of absorbers of variable strength in nuclear reactors C. Demazie`re a,*, G

  1. Nuclear Technology Series. Course 24: Nuclear Systems and Safety.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  2. Use of cermet fueled nuclear reactors for direct nuclear propulsion

    Microsoft Academic Search

    S. K. Bhattacharyya; L. W. Carlson; K. D. Kuczen; N. A. Hanan; R. G. Palmer; J. Von Hoomissen; W. Chiu; R. Haaland

    1988-01-01

    There has been a renewal of interest in Direct Nuclear Propulsion (DNP) because of the Air Force Forecast II recommendation for the development of the technology. Several nuclear concepts have been proposed to meet the Direct Nuclear Propulsion challenge. In this paper we will present results of an initial study of the potential of a cermet fueled nuclear system in

  3. Nuclear Technology Series. Course 23: Nuclear Chemical Processes.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  4. Nuclear Technology Series. Course 5: Introduction to Nuclear Systems.

    ERIC Educational Resources Information Center

    Center for Occupational Research and Development, Inc., Waco, TX.

    This technical specialty course is one of thirty-five courses designed for use by two-year postsecondary institutions in five nuclear technician curriculum areas: (1) radiation protection technician, (2) nuclear instrumentation and control technician, (3) nuclear materials processing technician, (4) nuclear quality-assurance/quality-control…

  5. 40 CFR 81.80 - Las Vegas Intrastate Air Quality Control Region.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Las Vegas Intrastate Air Quality Control Region. 81.80 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.80 Las Vegas...

  6. Learning From Houston: How Las Vegas Can Turn Its Economy Around

    E-print Network

    Ahmad, Sajjad

    could learn a lot from Houston. Much like Las Vegas, Houston was a one-industry town. When Houston and iconic architectural design and have flourishing tourism economies. Now, Las Vegas could leverage its

  7. 76 FR 35371 - Proposed Modification of the Las Vegas, NV, Class B Airspace Area; Public Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-17

    ...SW., Renton, WA 98057. FOR FURTHER INFORMATION CONTACT: John Gough, Manager, Airspace and Procedures, and Bill Ruggiero, Support Manager Las Vegas, TRACON, 699 Wright Brothers Lane, Las Vegas, NV 89119; telephone: (702) 597-5910....

  8. Nuclear Engineering Education in 21 st Century

    Microsoft Academic Search

    Farhang Sefidvash

    Nuclear engineering is concerned with the practical applications of nuclear energy. A nuclear engineer should be able to comprehend the basics of nuclear reactors, commercial nuclear power plant design, advanced or future nuclear systems, and application of nuclear energy. Nuclear engineering in general includes activities in virtually every branch of engineering and that if offers an unusual challenge to those

  9. Nuclear Fuel Reprocessing

    SciTech Connect

    Michael F. Simpson; Jack D. Law

    2010-02-01

    This is an a submission for the Encyclopedia of Sustainable Technology on the subject of Reprocessing Spent Nuclear Fuel. No formal abstract was required for the article. The full article will be attached.

  10. Nuclear material operations manual

    SciTech Connect

    Tyler, R.P.

    1981-02-01

    This manual provides a concise and comprehensive documentation of the operating procedures currently practiced at Sandia National Laboratories with regard to the management, control, and accountability of nuclear materials. The manual is divided into chapters which are devoted to the separate functions performed in nuclear material operations-management, control, accountability, and safeguards, and the final two chapters comprise a document which is also issued separately to provide a summary of the information and operating procedures relevant to custodians and users of radioactive and nuclear materials. The manual also contains samples of the forms utilized in carrying out nuclear material activities. To enhance the clarity of presentation, operating procedures are presented in the form of playscripts in which the responsible organizations and necessary actions are clearly delineated in a chronological fashion from the initiation of a transaction to its completion.

  11. Desalting and Nuclear Energy

    ERIC Educational Resources Information Center

    Burwell, Calvin C.

    1971-01-01

    Future use of nuclear energy to produce electricity and desalted water is outlined. Possible desalting processes are analyzed to show economic feasibility and the place in planning in world's economic growth. (DS)

  12. PDFs for nuclear targets

    E-print Network

    Karol Kovarik

    2010-06-25

    Understanding nuclear effects in parton distribution functions (PDF) is an essential component needed to determine the strange and anti-strange quark contributions in the proton. In addition Nuclear Parton Distribution Functions (NPDF) are critically important for any collider experiment with nuclei (e.g. RHIC, ALICE). Here two next-to-leading order chi^2-analyses of NPDF are presented. The first uses neutral current charged-lepton Deeply Inelastic Scattering (DIS) and Drell-Yan data for several nuclear targets and the second uses neutrino-nucleon DIS data. We compare the nuclear corrections factors (F_2^Fe/F_2^D) for the charged-lepton data with other results from the literature. In particular, we compare and contrast fits based upon the charged-lepton DIS data with those using neutrino-nucleon DIS data.

  13. Nuclear waste management worldwide

    Microsoft Academic Search

    Charles McCombie

    1997-01-01

    Numerous countries around the world are tackling the task of managing nuclear waste. By considering their approaches, we gain a broader perspective on the US program.{copyright} {ital 1997 American Institute of Physics.}

  14. Modeling nuclear explosion

    NASA Astrophysics Data System (ADS)

    Redd, Jeremy; Panin, Alexander

    2012-10-01

    As a result of the Nuclear Test Ban Treaty, no nuclear explosion tests have been performed by the US since 1992. This appreciably limits valuable experimental data needed for improvement of existing weapons and development of new ones, as well as for use of nuclear devices in non-military applications (such as making underground oil reservoirs or compressed air energy storages). This in turn increases the value of numerical modeling of nuclear explosions and of their effects on the environment. We develop numerical codes simulating fission chain reactions in a supercritical U and Pu core and the dynamics of the subsequent expansion of generated hot plasma in order to better understand the impact of such explosions on their surroundings. The results of our simulations (of both above ground and underground explosions) of various energy yields are presented.

  15. Nuclear radiation detectors

    Microsoft Academic Search

    Luiz Alexandre Schuch; Daniel Jean Roger Nordemann

    1990-01-01

    Detectors of nuclear radiation, such as gaseous detectors, scintillators, and semiconductors, are presented through their general properties and with their operating systems. The semiconductor detectors are studied with more details.

  16. Western Nuclear Science Alliance

    SciTech Connect

    Steve Reese; George Miller; Stephen Frantz; Denis Beller; Denis Beller; Ed Morse; Melinda Krahenbuhl; Bob Flocchini; Jim Elliston

    2010-12-07

    The primary objective of the INIE program is to strengthen nuclear science and engineering programs at the member institutions and to address the long term goal of the University Reactor Infrastructure and Education Assistance Program.

  17. The Canadian Nuclear FAQ

    NSDL National Science Digital Library

    Whitlock, Jeremy

    1996-04-24

    This highly pro-nuclear website offers information not only about nuclear energy in Canada, but about this controversial energy resource more generally. Start with the Introduction and Disclaimer, where Dr. Jeremy Whitlock, the author of the site and a reactor physicist at an Ottawa Valley nuclear power plant, explains the purpose and limitations of the site. Then have a look at the dozens of questions Dr. Whitlock answers with erudite â?? and opinionated â?? precision, covering such broad topics as Cost and Benefits, Safety and Liability, Waste Management, and Security and Non-Proliferation. Also, take a look at the excellent Links and Further Information pages, as well as the Editorials page, which features dozens of pro-nuclear missives. In all, interested readers will find this page well argued and informative.

  18. Nuclear Magnetic Resonance Spectroscopy

    NSDL National Science Digital Library

    2011-05-18

    This website serves as a primer for understanding the fundamentals of NMR spectroscopy. Plenty of useful figures and animations that enhance the understanding of nuclear spin, shielding, and how these phenomena serve as the basis for NMR.

  19. State Nuclear Profiles

    EIA Publications

    2012-01-01

    Presents a summary of current and recent historical data for the nuclear power industry. The data focuses on net summer capacity and net generation for each state, as well as plant specific information for 2010.

  20. Society of Nuclear Medicine

    Cancer.gov

    June 14, 2008 12:00 AM - June 18, 2008 12:00 AM Ernest N Morial Convention Center, Booth 419 New Orleans, LA + Add to Outlook Calendar 2008 Annual Meeting Print This Page Society of Nuclear Medicine News & Events

  1. International Nuclear Security

    SciTech Connect

    Doyle, James E. [Los Alamos National Laboratory

    2012-08-14

    This presentation discusses: (1) Definitions of international nuclear security; (2) What degree of security do we have now; (3) Limitations of a nuclear security strategy focused on national lock-downs of fissile materials and weapons; (4) What do current trends say about the future; and (5) How can nuclear security be strengthened? Nuclear security can be strengthened by: (1) More accurate baseline inventories; (2) Better physical protection, control and accounting; (3) Effective personnel reliability programs; (4) Minimize weapons-usable materials and consolidate to fewer locations; (5) Consider local threat environment when siting facilities; (6) Implement pledges made in the NSS process; and (7) More robust interdiction, emergency response and special operations capabilities. International cooperation is desirable, but not always possible.

  2. Nuclear data interface retrospective

    SciTech Connect

    Gray, Mark G [Los Alamos National Laboratory

    2008-01-01

    The Nuclear Data Interface (NDI) code library and data formats are the standards for multigroup nuclear data at Los Alamos National Laboratory. NDI's analysis, design, implementation, testing, integration, and maintenance required a ten person-year and ongoing effort by the Nuclear Data Team. Their efforts provide a unique, contemporary experience in producing a standard component library. In reflection upon that experience at NDI's decennial, we have identified several factors critical to NDI's success: it addressed real problems with appropriate simplicity, it fully supported all users, it added extra value through the code to the raw nuclear data, and its team went the distance from analysis through maintenance. In this report we review these critical success factors and discuss their implications for future standardization projects.

  3. Nuclear medicine annual, 1985

    SciTech Connect

    Freeman, L.M.; Weissmann, H.S.

    1985-01-01

    This book is intended to help physicians to keep current with major developments in investigational and interventional nuclear medicine. Each volume reviews topics of medical imaging. Technological advances in instrumentation, radiopharmaceuticals, and their clinical applications are explored in depth.

  4. After nuclear war - a nuclear winter

    SciTech Connect

    Tangley, L.

    1984-01-01

    The environmental and biological consequences of nuclear war were discussed by more than 100 eminent biologists, physicists and atmospheric scientists at the recent World after Nuclear War conference. The long-term effects were determined to be worse than the well-known immediate effects. They predicted that 225 million tons of smoke would be generated within a few days in their baseline scenario. As a result, the amount of sunlight reaching the earth would be reduced to a few percent of normal and temperatures would fall to -23/sup 0/C. About 30% of the northern middle latitudes would receive more than 250 rads radiation dose for several months and about 50% of the land area would receive more than 100 rads. Dangerous levels of solar ultraviolet light would burn through the atmosphere. It was also determined that these effects would be felt in the southern hemisphere. Those who survived the blast, fire and prompt radiation would face starvation from shutdown of plant photosynthesis and inhibition of phytoplankton photosynthesis. Huge wildfires and acid rains would stress any surviving plants and animals. Conference participants agreed that scientists had taken a new and significant step toward understanding the full consequences of nuclear war.

  5. Nuclear Power Plant

    NSDL National Science Digital Library

    John Pratte

    This lesson introduces students to the basics of nuclear energy production. Topics include radioisotope thermoelectric generators, natural decay of radioactive isotopes, and chain reactions. There is also a discussion of how to control a chain reaction and some concepts of reactor design. The lesson includes an activity in which students operate an online simulation of a nuclear power plant, attempting to keep power output as high as possible without losing control of the reaction.

  6. Nuclear Protein Transport Pathways

    Microsoft Academic Search

    Matthias Köhler; Hermann Haller; Enno Hartmann

    1999-01-01

    Nuclear proteins like transcription factors and ribosomal proteins are synthesized in the cytoplasm and have to be transported into the nucleus to fulfill their functions. The transport of proteins >20–60 kD through the nuclear pore complex (NPC) into the nucleus is an active, energy-requiring process. Transport substrates are recognized by their transport proteins via certain signals. The best-characterized protein import

  7. Nuclear Plant Inspection

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Engineers from the Power Authority of the State of New York use a Crack Growth Analysis Program supplied by COSMIC (Computer Software Management and Information Center) in one stage of nuclear plant inspection. Welds of the nuclear steam supply system are checked for cracks; radiographs, dye penetration and visual inspections are performed to locate cracks in the metal structure and welds. The software package includes three separate crack growth analysis models and enables necessary repairs to be planned before serious problems develop.

  8. Nuclear magnetic resonance gyroscope

    SciTech Connect

    Grover, B.C.

    1984-02-07

    A nuclear magnetic resonance gyro using two nuclear magnetic resonance gases, preferably xenon 129 and xenon 131, together with two alkaline metal vapors, preferably rubidium, potassium or cesium, one of the two alkaline metal vapors being pumped by light which has the wavelength of that alkaline metal vapor, and the other alkaline vapor being illuminated by light which has the wavelength of that other alkaline vapor.

  9. Israel's nuclear ambiguity

    SciTech Connect

    Cohen, A.; Frankel, B.

    1987-03-01

    On October 5, 1986, the London Sunday Times published details of secret Israeli nuclear weapons manufacturing, indicating that over the past 20 years Israel may have accumulated a nuclear arsenal of 100 to 200 weapons. While not entirely new, these recent revelations, in contrast to past information, are attributed to an identifiable source: Mordechai Vanunu, a former technician in Israel's Dimona nuclear facility. The prompt Israeli action that brought Vanunu to Israel to stand trial indicates how seriously the Israeli government has treated his story. The revelations bring into sharp focus the peculiar features of Israel's nuclear posture and the difficulty inherent in any serious discussion of the subject - notably the secrecy that has surrounded the program since its inception. To Israelis, no defense-related topic more sensitive. Although there is some evidence of internal debate at key junctures in the history of the Israeli nuclear project, there has never been any serious public questioning of the program, or its direction, from its inception three decades ago to the present, a period spanning the tenures of seven prime ministers. In view of the above revelations, the authors review Israel's nuclear weapons policy, deliberately ambiguous, and discuss possible alternatives in the context of possible nonproliferation efforts by the superpowers. 14 references, 2 figures.

  10. Superpower nuclear minimalism

    SciTech Connect

    Graben, E.K.

    1992-01-01

    During the Cold War, the United States and the Soviet Union competed in building weapons -- now it seems like America and Russia are competing to get rid of them the fastest. The lengthy process of formal arms control has been replaced by exchanges of unilateral force reductions and proposals for reciprocal reductions not necessarily codified by treaty. Should superpower nuclear strategies change along with force postures President Bush has yet to make a formal pronouncement on post-Cold War American nuclear strategy, and it is uncertain if the Soviet/Russian doctrine of reasonable sufficiency formulated in the Gorbachev era actually heralds a change in strategy. Some of the provisions in the most recent round of unilateral proposals put forth by Presidents Bush and Yeltsin in January 1992 are compatible with a change in strategy. Whether such a change has actually occurred remains to be seen. With the end of the Cold War and the breakup of the Soviet Union, the strategic environment has fundamentally changed, so it would seem logical to reexamine strategy as well. There are two main schools of nuclear strategic thought: a maximalist school, mutual assured destruction (MAD) which emphasizes counterforce superiority and nuclear war- fighting capability, and a MAD-plus school, which emphasizes survivability of an assured destruction capability along with the ability to deliver small, limited nuclear attacks in the event that conflict occurs. The MAD-plus strategy is based on an attempt to conventionalize nuclear weapons which is unrealistic.

  11. La ciencia del lenguaje estudia el fenmeno de las TIC, redes sociales y nuevas formas de comunicacin en la UA

    E-print Network

    Escolano, Francisco

    La ciencia del lenguaje estudia el fenómeno de las TIC, redes sociales y nuevas formas de comunicación en la UA Alicante, 8 de marzo de 2013 Las TIC, las redes sociales y las nuevas formas de.0: las TIC, redes sociales y nuevas formas de comunicación" comienza el lunes 11 de marzo de 2013 y hasta

  12. 18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 2012-04-01 false Nuclear energy hazards and nuclear incidents...Certifications § 1316.9 Nuclear energy hazards and nuclear incidents...such documents or actions: Nuclear Energy Hazards and Nuclear...

  13. 18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 2011-04-01 false Nuclear energy hazards and nuclear incidents...Certifications § 1316.9 Nuclear energy hazards and nuclear incidents...such documents or actions: Nuclear Energy Hazards and Nuclear...

  14. 18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...2013-04-01 2012-04-01 true Nuclear energy hazards and nuclear incidents...Certifications § 1316.9 Nuclear energy hazards and nuclear incidents...such documents or actions: Nuclear Energy Hazards and Nuclear...

  15. 18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 2014-04-01 false Nuclear energy hazards and nuclear incidents...Certifications § 1316.9 Nuclear energy hazards and nuclear incidents...such documents or actions: Nuclear Energy Hazards and Nuclear...

  16. 18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 2010-04-01 false Nuclear energy hazards and nuclear incidents...Certifications § 1316.9 Nuclear energy hazards and nuclear incidents...such documents or actions: Nuclear Energy Hazards and Nuclear...

  17. TDRSS ground terminal located in Las Cruces, New Mexico

    NASA Technical Reports Server (NTRS)

    1988-01-01

    Tracking and Data Relay Satellite System (TDRSS) ground terminal located in the desert just south of Las Cruces, New Mexico. This ground terminal serves as the nerve center for TDRSS communications. The White Sands Ground Terminal (WSGT) has been in operation since 1983. An additional TDRSS ground station, to serve the growing needs of space communications in the 1990's, is under construction just three miles north of this existing terminal. The new $1.8 million terminal is expected to be completed in 1989 and be in operation in 1993.

  18. El libro del Relogio del Palacio de las Horas

    NASA Astrophysics Data System (ADS)

    Morales, J. D.

    2009-08-01

    This paper resume the investigation entitled ``El libro del Relogio del Palacio de las Horas''. That consist in an edition of the original text of the book of the Clock of the Palace of the Hours from the Books of the knowledge of Astronomy of Alfonso X (Manuscript 156, Complutense University). And a description of the astronomical functionality of the Clock of the Palace of the Hours. It includes a geometric description of the positional astronomy on which the operation of the Palace is based.

  19. Nuclear Reactions and Reactor Safety

    E-print Network

    Onuchic, José

    successful nuclear power "plant" : 1942 Famous names: J Robert Oppenheimer, Richard Feynman, Enrico Fermi to ask me some questions about the plot! #12;Nuclear Chain Reactions to Nuclear Power Plants And now, we explosions? or ? -Controlled nuclear chain reactions possible: control energy release/sec -> More

  20. Nuclear weapons and international law

    SciTech Connect

    Pogany, I.

    1987-01-01

    Using two different perspectives, this collection of essays addresses the central legal question of whether the manufacture, deployment, and potential use of nuclear weapons is lawful. In addition, individual chapters focus on a variety of topical issues, including nuclear weapon free zones, nuclear testing, international law and regulations, nuclear weapons and nonproliferation, anti-ballistic missile systems, and the Strategic Defense Initiative.

  1. Thinking About Preventing Nuclear War.

    ERIC Educational Resources Information Center

    Ground Zero, Washington, DC.

    Potential paths to nuclear war and the available means of prevention of nuclear war are discussed. Presented is a detailed description of six nuclear war scenarios, and brief examples of types of potential deterrents to nuclear war (firebreaks) which are relevant for each. To be effective, the right combination of firebreaks must be used, the…

  2. Distrust and the Nuclear Doctrine

    Microsoft Academic Search

    J. d. Wulfhorst

    Abstract. A generation ago, rampant economic problems and perceived risk of nuclear power brought the industry to a halt on applying for new construction permits. Because of the military history of nuclear technology, development of the existing nuclear power infrastructure during the Cold War, and contemporary discussion about nuclear power offering a reduced carbon footprint, it has emerged as a

  3. International nuclear trade and nonproliferation

    Microsoft Academic Search

    1990-01-01

    The purpose of this book, the culmination of one phase of an ongoing international research project on nuclear suppliers and nonproliferation, is to explore the international political and economic dimensions of nuclear trade, especially as they pertain to the behavior of eleven emerging nuclear-supplier states. More specifically, the book sets forth a conceptual framework for analyzing international nuclear trade; details

  4. Nuclear Energy Research Brookhaven National

    E-print Network

    Ohta, Shigemi

    -Driven Systems ~90 Fusion Test Facilities (2 major in US) #12;Nuclear Science and Technology Department 55Nuclear Energy Research Brookhaven National Laboratory William C. Horak, Chair Nuclear Science and Technology Department #12;BNL Nuclear Energy Research Brookhaven Graphite Research Reactor - 1948 National

  5. Britain`s nuclear quandary

    SciTech Connect

    NONE

    1994-07-01

    This article is review of energy policy in the United Kingdom, in particular, the British government`s review of the nuclear industry. Major topics of this review include: (1) The economic viability of new nuclear stations, (2) The privitization of the nuclear industry, (3) Nuclear waste disposal, and (4) Liabilities associated with decommissioning.

  6. Nuclear War and Science Teaching.

    ERIC Educational Resources Information Center

    Hobson, Art

    1983-01-01

    Suggests that science-related material on nuclear war be included in introductory courses. Lists nuclear war topics for physics, psychology, sociology, biology/ecology, chemistry, geography, geology/meteorology, mathematics, and medical science. Also lists 11 lectures on nuclear physics which include nuclear war topics. (JN)

  7. La Universidad de Alicante inaugura las X Jornadas de Redes de Investigacin en Docencia Universitaria

    E-print Network

    Escolano, Francisco

    La Universidad de Alicante inaugura las X Jornadas de Redes de Investigación en Docencia edición de las Jornadas Redes de Investigación Universitaria, en el Salón de Actos del Aulario II, con la participación y el compromiso de la comunidad universitaria" como tema central, las X Jornadas Redes de

  8. Dos médicos y una causa: Len Crome y Reginald Saxton en las Brigadas Internacionales

    Microsoft Academic Search

    Paul Preston

    2004-01-01

    Una de las dimensiones más impresionantes, más duraderas y menos conocidas de las Brigadas Internacionales era la aportación de sus servidos médicos. Las aportaciones de los distintos médicos, españoles e internacionales, fueron de una importancia colosal en el desarrollo posterior de la medicina traumatològica, en guerra y en paz. Menos conocida fue la labor abnegada de conductores de ambulancias, enfermeras

  9. Determinantes de las respuestas a vacunas orales en países en vías de desarrollo

    Microsoft Academic Search

    David A. Sack; Firdausi Qadri; Ann-Mari Svennerholm

    2008-01-01

    ExtractoLas vacunas orales que se han diseñado para uso global no inducen necesariamente las mismas respuestas inmunitarias en todos los niños de todo el mundo. De hecho, varias vacunas inducen a menudo respuestas medias de anticuerpos menos frecuentes y menores en niños en países en vías de desarrollo, lo que permite suponer que las vacunas pueden producir un efecto menos

  10. Language Assessment Scales, LAS I, for Grades K-5, English/Spanish. Second Edition.

    ERIC Educational Resources Information Center

    De Avila, Edward A.; Duncan, Sharon E.

    Language Assessment Scales, LAS I, are designed for children in grades K-5. LAS I accommodates ethnic and linguistic differences and provides direct language activities taken from the popular culture of both English- and Spanish-speaking peoples. LAS I consists of two independent tests, one in English and the other in Spanish, presented largely on…

  11. Globalización y multiculturalismo: ¿son posibles las democracias multiculturales en la era del globalismo?

    Microsoft Academic Search

    Carlos Manuel Abella Vázquez

    2007-01-01

    La globalización y el multiculturalismo son dos realidades relacionadas. El aumento de las desigualdades económicas en el mundo ha conllevado la emigración desde las zonas menos desarrolladas hacia las más prósperas, lo que ha supuesto la llegada a los países occidentales de gentes con diversas culturas. Pero, al mismo tiempo, la globalización, en tanto encarnación del neoliberalismo económico, ha supuesto

  12. E-strategias en la introducción y uso de las TIC en la universidad

    Microsoft Academic Search

    Josep M. Duart; Francisco Lupiáñez

    2008-01-01

    Las tecnologías de la información y de la comunicación (TIC) se han asentado plenamente en las universidades españolas a lo largo de la última década. Sin duda, esto está comportando un cambio significativo en la dinámica interna de las instituciones: en la forma de planificar y desarrollar la docencia universitaria, en la administración académica y en los servicios a los

  13. Las TICs como factor de inclusión social. Programa aplicado en Galicia, España

    Microsoft Academic Search

    Manoel Baña Castro; Isabel Novo Cortí; Beatríz López González

    2010-01-01

    Con el avance de la investigación sobre la cohesión social y las personas en colectivos de alto riesgo de exclusión social se torna más relevante el papel jugado por las familias en sus propias perspectivas de inclusión social y vida futura. El colectivo de las personas con diversidad funcional de solicita el correcto funcionamiento de sus grupos de referencia, para

  14. The Writing Center 4505 South Maryland Parkway Box 455043 Las Vegas, Nevada 89154-5043

    E-print Network

    Ahmad, Sajjad

    The Writing Center 4505 South Maryland Parkway Box 455043 Las Vegas, Nevada 89154-5043 (702) 895-3908 March 23, 2010 Dean Christopher C. Hudgins University of Nevada, Las Vegas College of Liberal Arts Box 455001 4505 South Maryland Parkway Las Vegas, Nevada 89154-5001 Subject: English Language Center Dear

  15. Inversion Industrial y Empleo en las regiones españolas. 1976-1995

    Microsoft Academic Search

    Eva Aguayo; M. Carmen Guisan

    2001-01-01

    En este trabajo presentamos la evolucion del empleo en las comunidades autonomas españolas, analizando las diferencias regionales y teniendo en cuenta el importante papel que la inversion industrial tiene como elemento dinamizador de la produccion y el empleo de los sectores no agrarios, tanto desde el punto de vista de la oferta como de la demanda. Todas las regiones españolas

  16. Ineficiencia en la Distribución de Energía Eléctrica: Una Aplicación de las Funciones de Distancia Estocástica

    Microsoft Academic Search

    Ligia Melo B; Nestor Espinosa

    Este documento evalúa el desempeño de las empresas distribuidoras de energía durante el periodo 1999-2003, utilizando la metodología de funciones de distancia estocástica, la cual a través de la estimación de las desviaciones de una función ideal de producción, permite medir los niveles de eficiencia técnica de las diferentes empresas. Los resultados indican que existen diferencias significativas en el desempeño

  17. Ineficiencia en la distribución de energía eléctrica: una aplicación de las funciones de distancia estocástica

    Microsoft Academic Search

    Ligia Melo; Néstor Espinosa

    2005-01-01

    En este documento se evalúa el desempeño de las empresas distribuidoras de energía durante el período 1999-2003, utilizando la metodología de funciones de distancia estocástica, la cual, a través de la estimación de las desviaciones de una función ideal de producción, permite medir los niveles de eficiencia técnica de las diferentes empresas. Los resultados indican que existen diferencias significativas en

  18. Energía, industria y medio rural: el caso de las zonas de montaña españolas, 1850-2000

    Microsoft Academic Search

    Fernando Collantes

    2003-01-01

    El trabajo analiza las relaciones entre recursos energéticos, actividades industriales y economías rurales en el marco del desarrollo de la España contemporánea, tomando como muestra las 84 principales comarcas montañosas del país. Para ello se han reconstruido series estadísticas acerca de la minería del carbón, la producción eléctrica o el grado de intensidad industrial de las diferentes zonas de montaña.

  19. CALCULADORAS GRÁFICAS Y PRECÁLCULO : EL IMPACTO EN LAS CREENCIAS DEL PROFESOR

    Microsoft Academic Search

    Cristina Gómez; Paola Valero

    La investigación pretende establecer cuál es el impacto del uso de las calculadoras gráficas sobre el sistema de creencias del profesor. Para tal efecto, se ha tomado como marco de referencia general de los sistemas de creencias de los profesores de matemáticas la tipología de Paul Ernest sobre las concepciones de las matemáticas, su enseñanza, aprendizaje, objetivos y materiales instruccionales.

  20. Panel report: nuclear physics

    SciTech Connect

    Carlson, Joseph A [Los Alamos National Laboratory; Hartouni, Edward P [LLNL

    2010-01-01

    Nuclear science is at the very heart of the NNSA program. The energy produced by nuclear processes is central to the NNSA mission, and nuclear reactions are critical in many applications, including National Ignition Facility (NIF) capsules, energy production, weapons, and in global threat reduction. Nuclear reactions are the source of energy in all these applications, and they can also be crucial in understanding and diagnosing the complex high-energy environments integral to the work of the NNSA. Nuclear processes are complex quantum many-body problems. Modeling and simulation of nuclear reactions and their role in applications, coupled tightly with experiments, have played a key role in NNSA's mission. The science input to NNSA program applications has been heavily reliant on experiment combined with extrapolations and physical models 'just good enough' to provide a starting point to extensive engineering that generated a body of empirical information. This body of information lacks the basic science underpinnings necessary to provide reliable extrapolations beyond the domain in which it was produced and for providing quantifiable error bars. Further, the ability to perform additional engineering tests is no longer possible, especially those tests that produce data in the extreme environments that uniquely characterize these applications. The end of testing has required improvements to the predictive capabilities of codes simulating the reactions and associated applications for both well known and well characterized cases as well as incompletely known cases. Developments in high performance computing, computational physics, applied mathematics and nuclear theory have combined to make spectacular advances in the theory of fission, fusion and nuclear reactions. Current research exploits these developments in a number of Office of Science and NNSA programs, and in joint programs such as the SciDAC (Science Discovery through Advanced Computing) that supports the project Building a Universal Nuclear Energy Density Fuctional whose goals are to provide the unified approach to calculating the properties of nuclei. The successful outcome of this, and similar projects is a first steps toward a predictive nuclear theory based on fundamental interactions between constituent nucleons. The application of this theory to the domain of nuclei important for national security missions will require computational resources at the extreme scale, beyond what will be available in the near term future.

  1. Nuclear Regulatory Commission information digest

    SciTech Connect

    None,

    1990-03-01

    The Nuclear Regulatory Commission information digest provides summary information regarding the US Nuclear Regulatory Commission, its regulatory responsibilities, and areas licensed by the commission. This is an annual publication for the general use of the NRC Staff and is available to the public. The digest is divided into two parts: the first presents an overview of the US Nuclear Regulatory Commission and the second provides data on NRC commercial nuclear reactor licensees and commercial nuclear power reactors worldwide.

  2. SOURCE AND PATHWAY DETERMINATION FOR BERYLLIUM FOUND IN BECHTEL NEVADA NORTH LAS VEGAS FACILITIES

    SciTech Connect

    BECHTEL NEVADA

    2004-07-01

    In response to the report ''Investigation of Beryllium Exposure Cases Discovered at the North Las Vegas Facility of the National Nuclear Security Administration'', published by the U.S. Department of Energy (DOE), National Nuclear Security Administration (NNSA) in August 2003, Bechtel Nevada (BN) President and General Manager Dr. F. A. Tarantino appointed the Beryllium Investigation & Assessment Team (BIAT) to identify both the source and pathway for the beryllium found in the North Las Vegas (NLV) B-Complex. From September 8 to December 18, 2003, the BIAT investigated the pathway for beryllium and determined that a number of locations existed at the Nevada Test Site (NTS) which could have contained sufficient quantities of beryllium to result in contamination if transported. Operations performed in the B-1 Building as a result of characterization activities at the Engine Maintenance, Assembly, and Disassembly (EMAD); Reactor Maintenance, Assembly, and Disassembly (RMAD); Test Cells A and C; and the Central Support Facility in Area 25 had the greatest opportunity for transport of beryllium. Investigative monitoring and sampling was performed at these sites with subsequent transport of sample materials, equipment, and personnel from the NTS to the B-1 Building. The timeline established by the BIAT for potential transport of the beryllium contamination into the B-1 Building was from September 1997 through November 2002. Based on results of recently completed swipe sampling, no evidence of transport of beryllium from test areas has been confirmed. Results less than the DOE beryllium action level of 0.2 ???g/100 cm2 were noted for work support facilities located in Area 25. All of the identified sites in Area 25 worked within the B-1 tenant's residency timeline have been remediated. Legacy contaminants have either been disposed of or capped with clean borrow material. As such, no current opportunity exists for release or spread of beryllium contamination. Historical records indicate that there are locations at the NTS which contain hazardous quantities of beryllium; however, because beryllium was not always considered a contaminant of concern, complete characterization was not performed prior to remediation efforts. Today, it is not practical to characterize Area 25 for beryllium due to the successful remediation. Analysis of sample data collected in B-1 for the BIAT was performed for the purpose of confirming past results and identifying a source of beryllium through the use of markers. The results confirmed the presence of man-made beryllium contamination in the B-1 High Bay at levels consistent with the NNSA Report. No source markers were found that would be associated with NTS historical nuclear rocket or weapons-related operations. Beryllium contamination was identified in the southwest area of the B-1 High Bay in characteristic association with materials handled during historic metal-working operations. Use of source marker analysis suggests a contributor of beryllium found in carpeted areas of the B-Complex may be naturally occurring. Naturally occurring beryllium is not regulated by Title 10 Code of Federal Regulations Part 850 (10 CFR 850) (see Appendix A). No current uncontrolled beryllium source or transport pathways have been identified as available for spread of contamination to uncontrolled areas from the NTS.

  3. NESST: A nuclear energy safety and security treaty-Separating nuclear energy from nuclear weapons

    NASA Astrophysics Data System (ADS)

    McNamara, Brendan

    2012-06-01

    Fission and Fusion energy is matched by the need to completely separate civilian energy programmes from the production of nuclear weapons. The Nuclear Proliferation Treaty (NPT, 1968) muddles these issues together. The case is presented here for making a new Nuclear Energy Security Treaty (NESST) which is rigorous, enforceable without violence, and separate from the political quagmire of nuclear weapons.

  4. Nuclear ``pasta'' formation

    NASA Astrophysics Data System (ADS)

    Schneider, A. S.; Horowitz, C. J.; Hughto, J.; Berry, D. K.

    2013-12-01

    The formation of complex nonuniform phases of nuclear matter, known as nuclear pasta, is studied with molecular dynamics (MD) simulations containing 51200 nucleons. A phenomenological nuclear interaction is used that reproduces the saturation binding energy and density of nuclear matter. Systems are prepared at an initial density of 0.10fm-3 and then the density is decreased by expanding the simulation volume at different rates to densities of 0.01fm-3 or less. An originally uniform system of nuclear matter is observed to form spherical bubbles (“swiss cheese”), hollow tubes, flat plates (“lasagna”), thin rods (“spaghetti”) and, finally, nearly spherical nuclei with decreasing density. We explicitly observe nucleation mechanisms, with decreasing density, for these different pasta phase transitions. Topological quantities known as Minkowski functionals are obtained to characterize the pasta shapes. Different pasta shapes are observed depending on the expansion rate. This indicates nonequilibrium effects. We use this to determine the best ways to obtain lower energy states of the pasta system from MD simulations and to place constraints on the equilibration time of the system.

  5. Extremes of nuclear structure

    NASA Astrophysics Data System (ADS)

    1999-09-01

    With the advent of medium and large gamma detector arrays, it is now possible to look at nuclear structure at high rotational forces. The role of pairing correlations and their eventual breakdown, along with the shell effects have showed us the interesting physics for nuclei at high spins - superdeformation, shape co-existence, yrast traps, alignments and their dramatic effects on nuclear structure and so on. Nuclear structure studies have recently become even more exciting, due to efforts and possibilities to reach nuclei far off from the stability valley. Coupling of gamma ray arrays with 'filters', like neutron wall, charged particle detector array, gamma ray total energy and multiplicity castles, conversion electron spectrometers etc gives a great handle to study nuclei produced online with 'low' cross-sections. Recently we studied, nuclei in mass region 80 using an array of 8 germanium detectors in conjunction with the recoil mass analyser, HIRA at the Nuclear Science Centre and, most unexpectedly came across the phenomenon of identical bands, with two quasi-particle difference. The discovery of magnetic rotation is another highlight. Our study of light In nucleus, 107In brought us face to face with the 'dipole' bands. I plan to discuss some of these aspects. There is also an immensely important development - that of the 'radioactive ion beams'. The availability of RIB, will probably very dramatically influence our 'conventional' concept of nuclear structure. The exotic shapes of these exotic nuclei and some of their expected properties will also be touched upon.

  6. La Fundacin Banesto y el Observatorio de Insercin Laboral de la Universidad de Alicante ensearn a las PYMES el uso de las redes

    E-print Network

    Escolano, Francisco

    a las PYMES el uso de las redes sociales para mejorar sus negocios Alicante, 7 de septiembre de 2011 Dirigido a empresarios, emprendedores y comerciantes, el taller "Redes Sociales y Web 2.0: cómo vender más Alicante a participar en el taller "Redes Sociales y Web 2.0: cómo vender más y mejor. En el taller, que

  7. Elementos de política, riesgos ante el cambio climático, complementariedad entre las FNCE y el sin, y costos indicativos de las FNCE

    Microsoft Academic Search

    Ernesto Torres; José Maria Rincón; Edinson Lozano

    2011-01-01

    En este documento se presentan y analizan las experiencias internacionales en políticas para el desarrollo de las FNCE en la Unión Europea y en varios países de la Unión (Alemania, España y Croacia). También se presentan y analizan estas experiencias en varios países de América Latina (Méjico, Perú y Brasil). En el capítulo tercero, se analizan elementos de política en

  8. ÓPTIMO DE COBERTURA VEGETAL EN RELACIÓN A LAS PÉRDIDAS DE SUELO POR EROSIÓN HÍDRICA Y LAS PÉRDIDAS DE LLUVIA POR INTERCEPTACIÓN

    Microsoft Academic Search

    Belmonte Serrato; Romero Díaz; López Bermúdez; E. Hernández Laguna

    RESUMEN Se establece, en una primera aproximación, el óptimo de cobertura en función de las pér- didas de suelo por erosión hídrica y de las pérdidas de lluvia por interceptación, en un mato- rral (romeral), en condiciones ambientales semiáridas mediterráneas, con un mismo tipo de suelo y dos tramos de pendiente de ladera, 11% y 25%. Se utiliza el promedio

  9. OFF-SITE ENVIRONMENTAL MONITORING REPORT: RADIATION MONITORING AROUND UNITED STATES NUCLEAR TEST AREAS, CALENDAR YEAR 1987

    EPA Science Inventory

    This report covers the routine radiation monitoring activities conducted by the Environmental Monitoring Systems Laboratory-Las Vegas in areas which may be affected by nuclear testing programs of the Department of Energy. This monitoring is conducted to document compliance with s...

  10. OFF-SITE ENVIRONMENTAL MONITORING REPORT: RADIATION MONITORING AROUND UNITED STATES NUCLEAR TEST AREAS, CALENDAR YEAR 1984

    EPA Science Inventory

    This report covers the routine radiation monitoring activities conducted by the Environmental Monitoring Systems Laboratory-Las Vegas in areas which may be affected by nuclear testing programs of the Department of Energy. This monitoring is conducted to document compliance with s...

  11. Perceived risk, stigma, and potential economic impacts of a high-level nuclear waste repository in Nevada

    Microsoft Academic Search

    Paul Slovic; Mark Layman; Nancy Kraus; James Flynn; James Chalmers; Gail Gesell

    1991-01-01

    This study investigates the potential impacts of the proposed nuclear waste repository at Yucca Mountain, Nevada, upon tourism, retirement and job-related migration, and business development in Las Vegas and the state. Adverse impacts may be expected to result from perceptions of risk, stigmatization, and socially amplified reactions to `unfortunate events` associated with the repository (major and minor accidents, discoveries of

  12. Nuclear Neighborhoods and Gene Expression

    PubMed Central

    Zhao, Rui; Bodnar, Megan S.; Spector, David L.

    2009-01-01

    Summary The eukaryotic nucleus is a highly compartmentalized and dynamic environment. Chromosome territories are arranged non-randomly within the nucleus and numerous studies have indicated that a gene’s position in the nucleus can impact its transcriptional activity. Here, we focus on recent advances in our understanding of the influence of specific nuclear neighborhoods on gene expression or repression. Nuclear neighborhoods associated with transcriptional repression include the inner nuclear membrane/nuclear lamina and peri-nucleolar chromatin, whereas neighborhoods surrounding the nuclear pore complex, PML nuclear bodies, and nuclear speckles seem to be transcriptionally permissive. While nuclear position appears to play an important role in gene expression, it is likely to be only one piece of a flexible puzzle that incorporates numerous parameters. We are still at a very early, yet exciting stage in our journey toward deciphering the mechanism(s) that govern the permissiveness of gene expression/repression within different nuclear neighborhoods. PMID:19339170

  13. Pediatric nuclear medicine

    SciTech Connect

    Not Available

    1986-01-01

    This symposium presented the latest techniques and approaches to the proper medical application of radionuclides in pediatrics. An expert faculty, comprised of specialists in the field of pediatric nuclear medicine, discussed the major indications as well as the advantages and potential hazards of nuclear medicine procedures compared to other diagnostic modalities. In recent years, newer radiopharmaceuticals labeled with technetium-99m and other short-lived radionuclides with relatively favorable radiation characteristics have permitted a variety of diagnostic studies that are very useful clinically and carry a substantially lower radiation burden then many comparable X-ray studies. This new battery of nuclear medicine procedures is now widely available for diagnosis and management of pediatric patients. Many recent research studies in children have yielded data concerning the effacacy of these procedures, and current recommendations will be presented by those involved in conducting such studies. Individual papers are processed separately for the Energy Data Base.

  14. Nuclear fuel element

    DOEpatents

    Armijo, Joseph S. (Saratoga, CA); Coffin, Jr., Louis F. (Schenectady, NY)

    1983-01-01

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has a composite cladding having a substrate and a metal barrier metallurgically bonded on the inside surface of the substrate so that the metal barrier forms a shield between the substrate and the nuclear fuel material held within the cladding. The metal barrier forms about 1 to about 30 percent of the thickness of the cladding and is comprised of a low neutron absorption metal of substantially pure zirconium. The metal barrier serves as a preferential reaction site for gaseous impurities and fission products and protects the substrate from contact and reaction with such impurities and fission products. The substrate of the composite cladding is selected from conventional cladding materials and preferably is a zirconium alloy. Methods of manufacturing the composite cladding are also disclosed.

  15. Nuclear fuel element

    DOEpatents

    Armijo, Joseph S. (Saratoga, CA); Coffin, Jr., Louis F. (Schenectady, NY)

    1980-04-29

    A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has an improved composite cladding comprised of a moderate purity metal barrier of zirconium metallurgically bonded on the inside surface of a zirconium alloy tube. The metal barrier forms a shield between the alloy tube and a core of nuclear fuel material enclosed in the composite cladding. There is a gap between the cladding and the core. The metal barrier forms about 1 to about 30 percent of the thickness of the composite cladding and has low neutron absorption characteristics. The metal barrier serves as a preferential reaction site for gaseous impurities and fission products and protects the alloy tube from contact and reaction with such impurities and fission products. Methods of manufacturing the composite cladding are also disclosed.

  16. Swedish nuclear waste efforts

    SciTech Connect

    Rydberg, J.

    1981-09-01

    After the introduction of a law prohibiting the start-up of any new nuclear power plant until the utility had shown that the waste produced by the plant could be taken care of in an absolutely safe way, the Swedish nuclear utilities in December 1976 embarked on the Nuclear Fuel Safety Project, which in November 1977 presented a first report, Handling of Spent Nuclear Fuel and Final Storage of Vitrified Waste (KBS-I), and in November 1978 a second report, Handling and Final Storage of Unreprocessed Spent Nuclear Fuel (KBS II). These summary reports were supported by 120 technical reports prepared by 450 experts. The project engaged 70 private and governmental institutions at a total cost of US $15 million. The KBS-I and KBS-II reports are summarized in this document, as are also continued waste research efforts carried out by KBS, SKBF, PRAV, ASEA and other Swedish organizations. The KBS reports describe all steps (except reprocessing) in handling chain from removal from a reactor of spent fuel elements until their radioactive waste products are finally disposed of, in canisters, in an underground granite depository. The KBS concept relies on engineered multibarrier systems in combination with final storage in thoroughly investigated stable geologic formations. This report also briefly describes other activities carried out by the nuclear industry, namely, the construction of a central storage facility for spent fuel elements (to be in operation by 1985), a repository for reactor waste (to be in operation by 1988), and an intermediate storage facility for vitrified high-level waste (to be in operation by 1990). The R and D activities are updated to September 1981.

  17. Relativistic nuclear collisions: theory

    SciTech Connect

    Gyulassy, M.

    1980-07-01

    Some of the recent theoretical developments in relativistic (0.5 to 2.0-GeV/nucleon) nuclear collisions are reviewed. The statistical model, hydrodynamic model, classical equation of motion calculations, billiard ball dynamics, and intranuclear cascade models are discussed in detail. Inclusive proton and pion spectra are analyzed for a variety of reactions. Particular attention is focused on how the complex interplay of the basic reaction mechanism hinders attempts to deduce the nuclear matter equation of state from data. 102 references, 19 figures.

  18. Nuclear medicine imaging system

    DOEpatents

    Bennett, G.W.; Brill, A.B.; Bizais, Y.J.C.; Rowe, R.W.; Zubal, I.G.

    1983-03-11

    It is an object of this invention to provide a nuclear imaging system having the versatility to do positron annihilation studies, rotating single or opposed camera gamma emission studies, and orthogonal gamma emission studies. It is a further object of this invention to provide an imaging system having the capability for orthogonal dual multipinhole tomography. It is another object of this invention to provide a nuclear imaging system in which all available energy data, as well as patient physiological data, are acquired simultaneously in list mode.

  19. Clustering in nuclear environment

    E-print Network

    G. Röpke

    2014-08-12

    The properties of few-body clusters (mass number $A \\le 4$) are modified if they are immersed in a nuclear medium. In particular, Pauli blocking that reflects the antisymmetrization of the many-body wave function is responsible for the medium modification of light clusters and the dissolution with increasing density. A more consistent description is given with takes also the contribution of correlations in the continuum into account. The relation between cluster formation in warm dense matter and in nuclear structure is discussed.

  20. Nuclear Systems Design Project

    NSDL National Science Digital Library

    2011-01-01

    It might be inadvisable to build your own nuclear power plant, but for those looking to learn the basics, this OpenCourseWare course from MIT can help. This course was originally taught in the fall of 2011 by Dr. Michael Short. On the page, visitors can look over the syllabus, the course calendar, the readings, and the lecture videos and class notes. This last area is quite useful, as it contains videos and slides from talks on hydrogen and biofuel production, process heat, and the entire nuclear system design process. Additionally, the site contains links to some of the assignments for the course and information about team projects.

  1. Managing nuclear operations

    SciTech Connect

    Carter, A.B.; Steinbruner, J.D.; Zraket, C.A.

    1987-01-01

    This book seeks to remedy the neglect of nuclear operations as a major flaw in the prevailing understanding of security. It aims to make the operational terrain at least more familiar if not much firmer. It describes the instruments involved in nuclear operations - the sensors, communications links, and command centers that form the physical network as well as the plans, procedures, organizations, and widely shared assumptions that allow the parts to work together coherently. The book as a whole seeks more to pose fundamental issues of operations management than to give definitive answers. It promotes no particular policy and makes no recommendations.

  2. Clustering in nuclear environment

    NASA Astrophysics Data System (ADS)

    Röpke, G.

    2014-12-01

    The properties of few-body clusters (mass number A <= 4) are modified if they are immersed in a nuclear medium. In particular, Pauli blocking that reflects the antisymmetrization of the many-body wave function is responsible for the medium modification of light clusters and the dissolution with increasing density. A more consistent description is given with takes also the contribution of correlations in the continuum into account. The relation between cluster formation in warm dense matter and in nuclear structure is discussed.

  3. Nuclear Masses in Astrophysics

    E-print Network

    Christine Weber; Klaus Blaum; Hendrik Schatz

    2008-12-09

    Among all nuclear ground-state properties, atomic masses are highly specific for each particular combination of N and Z and the data obtained apply to a variety of physics topics. One of the most crucial questions to be addressed in mass spectrometry of unstable radionuclides is the one of understanding the processes of element formation in the Universe. To this end, accurate atomic mass values of a large number of exotic nuclei participating in nucleosynthesis are among the key input data in large-scale reaction network calculations. In this paper, a review on the latest achievements in mass spectrometry for nuclear astrophysics is given.

  4. STRUCTURAL BIOLOGY: Nuclear Trafficking

    NSDL National Science Digital Library

    Murray Stewart (MRC Laboratory of Molecular Biology; )

    2003-11-28

    Access to the article is free, however registration and sign-in are required. The transcription factor SREBP-2 is a crucial component in cholesterol metabolism, switching on genes that regulate the synthesis and uptake of cholesterol. To activate these genes, SREBP-2 must be transported from the cytoplasm into the nucleus. In his Perspective, Stewart discusses an analysis of the crystal structure of SREBP-2 bound to its nuclear transport protein, importin-beta, which sheds new light on SREBP-2 nuclear transport (Lee et al.).

  5. Focused technology: Nuclear propulsion

    NASA Technical Reports Server (NTRS)

    Miller, Thomas J.

    1991-01-01

    The topics presented are covered in viewgraph form and include: nuclear thermal propulsion (NTP), which challenges (1) high temperature fuel and materials, (2) hot hydrogen environment, (3) test facilities, (4) safety, (5) environmental impact compliance, and (6) concept development, and nuclear electric propulsion (NEP), which challenges (1) long operational lifetime, (2) high temperature reactors, turbines, and radiators, (3) high fuel burn-up reactor fuels, and designs, (4) efficient, high temperature power conditioning, (5) high efficiency, and long life thrusters, (6) safety, (7) environmental impact compliance, and (8) concept development.

  6. Nuclear waste's last stand

    SciTech Connect

    Not Available

    1992-12-01

    It's hard to imagine a more unwelcome neighbor than nuclear waste. But something has to be done with the spent fuel now piling up at nuclear plants in the United States. While a handful of Indian tribes and other communities have shown interest in hosting a temporary storage site, the outcry from their neighbors and politicians may squash their plans. Now, a decade after the federal government began the search for a permanent repository, it still can't find even a temporary destination. Here's look at the problem and its consequences.

  7. Financing the Nuclear Renaissance

    E-print Network

    Nuttall, William J; Taylor, S

    and expansion. In the west, the growth of nuclear energy largely stalled in the late 1980s. In this paper we shall consider the financing of a possible return to the building of new nuclear power plants (NPPs) in Western European and the US. Several... cases be set by the price of gas, which is linked to oil ii. Risk of a low carbon price iii. Poor plant reliability in operational phase (low load factor) The upshot of these is that private investors will expect relatively high rates of return ex...

  8. (Cardiology and nuclear medicine)

    SciTech Connect

    Knapp, F.F. Jr.

    1988-10-27

    The traveler was invited to serve as an external examiner for a doctoral thesis entitled Analysis of Myocardial Time-Activity Curves Related to Radiolabeled Free Fatty Acid Metabolism'' in the Cardiology Department at the Free University of Amsterdam, The Netherlands. The traveler also visited the Institute for Clinical and Experimental Nuclear Medicine in Bonn, West Germany, the Department of Nuclear Medicine in Aachen, West Germany, and the Cyclotron Research Center in Liege, Belgium. He led discussions, reviewed data, and coordinated further collaboration on the preclinical studies and clinical testing of radiopharmaceuticals being developed by the traveler's research group at the Oak Ridge National Laboratory (ORNL).

  9. Nuclear Physics Group

    NSDL National Science Digital Library

    This website features the Nuclear Physics Group at the University of Birmingham's research related to understanding nuclei properties by studying the behavior of their constituents. Visitors can learn about the investigations undertaken by the five subgroups: Relativistic Heavy Ion Collisions, Exotic beams studies, Laser Spectroscopy of Unstable Isotopes, Positron Emission Tomography, and Nuclear Power Energy. Students and educators can discover how under high temperature and density a quark is expected to convert into a plasma phase. The website also features links to the Positron Imaging Center where visitors can learn all about the positron cameras and the physics of Positron Emission Particle Tracking. [RME

  10. Neutrinos in Nuclear Physics

    E-print Network

    R. D. McKeown

    2014-12-03

    Since the discovery of nuclear beta decay, nuclear physicists have studied the weak interaction and the nature of neutrinos. Many recent and current experiments have been focused on the elucidation of neutrino oscillations and neutrino mass. The quest for the absolute value of neutrino mass continues with higher precision studies of the tritium beta decay spectrum near the endpoint. Neutrino oscillations are studied through measurements of reactor neutrinos as a function of baseline and energy. And experiments searching for neutrinoless double beta decay seek to discover violation of lepton number and establish the Majorana nature of neutrino masses.

  11. Nuclear Energy: Challenges and Directions

    NASA Astrophysics Data System (ADS)

    Pierson, Mark

    2011-10-01

    There are many myths regarding nuclear energy. Nuclear energy provides many advantages but like all other power generation methods it has some drawbacks. There have been some serious accidents involving nuclear power generation with the most recent occurring at Fukushima Daiichi. What role will nuclear energy play in the future? What are the challenges of the nuclear landscape as we move forward? Are there changes in policy or technology that should be considered? A vision of nuclear energy will be provided in an attempt to address these upcoming opportunities and challenges.

  12. ROSAT Public PSPC Observations in the Las Campanas Redshift Survey

    E-print Network

    D. L. Tucker; G. Hasinger; H. Lin

    1997-04-22

    The Las Campanas Redshift Survey, an optically selected survey which contains 26,418 galaxy redshifts, has been correlated with ``The First ROSAT Source Catalogue of Pointed Observations with the PSPC,'' which contains 50,408 sources from 2876 ROSAT pointed observations. Ten matches were found. The optical spectra of most of the ten matches show weak narrow emission lines. Due to their high x-ray luminosities, their high x-ray--to--optical flux ratios, and the evidence of rapid x-ray variability in the two brightest matches, we interpret the majority of these objects to be narrow-line Seyfert galaxies or ``hidden'' active galactic nuclei. Of the ten matches, only one galaxy shows the characteristics of a bona fide starburst.

  13. Algoritmos Basados en Nubes de Particulas y Evolucion Diferencial para el Problema de

    E-print Network

    Granada, Universidad de

    Algoritmos Basados en Nubes de Part´iculas y Evoluci´on Diferencial para el Problema de Optimizaci con variables reales pode- mos destacar a los algoritmos basados en nubes de part´iculas y evoluci propuestas en la literatura. Este estu- dio permite analizar las distintas t´ecnicas en funci´on de sus

  14. Nuclear, chemical, and physical characterization of nuclear materials

    Microsoft Academic Search

    L. Tandon; E. Hastings; J. Banar; J. Barnes; D. Beddingfield; D. Decker; J. Dyke; D. Farr; J. FitzPatrick; D. Gallimore; S. Garner; R. Gritzo; T. Hahn; G. Havrilla; B. Johnson; K. Kuhn; S. LaMont; D. Langner; C. Lewis; V. Majidi; P. Martinez; R. McCabe; S. Mecklenburg; D. Mercer; S. Meyers; V. Montoya; B. Patterson; R. A. Pereyra; D. Porterfield; J. Poths; D. Rademacher; C. Ruggiero; D. Schwartz; M. Scott; K. Spencer; R. Steiner; R. Villarreal; H. Volz; L. Walker; A. Wong; C. Worley

    2008-01-01

    The goal of nuclear forensics is to establish an unambiguous link between illicitly trafficked nuclear material and its origin.\\u000a The Los Alamos National Laboratory (LANL) Nuclear Materials Signatures Program has implemented a graded “conduct of operations”\\u000a type analysis flow path approach for determining the key nuclear, chemical, and physical signatures needed to identify the\\u000a manufacturing process, intended use, and origin

  15. Nuclear effects in Neutrino Nuclear Cross-sections

    SciTech Connect

    Singh, S. K.; Athar, M. Sajjad [Department of Physics, Aligarh Muslim University, Aligarh-202 002 (India)

    2008-02-21

    Nuclear effects in the quasielastic and inelastic scattering of neutrinos(antineutrinos) from nuclear targets have been studied. The calculations are done in the local density approximation which take into account the effect of nucleon motion as well as renormalisation of weak transition strengths in the nuclear medium. The inelastic reaction leading to production of pions is calculated in a {delta} dominance model taking into account the renormalization of {delta} properties in the nuclear medium.

  16. Weak nuclear forces cause the strong nuclear force

    E-print Network

    E. L. Koschmieder

    2007-12-11

    We determine the strength of the weak nuclear force which holds the lattices of the elementary particles together. We also determine the strength of the strong nuclear force which emanates from the sides of the nuclear lattices. The strong force is the sum of the unsaturated weak forces at the surface of the nuclear lattices. The strong force is then about ten to the power of 6 times stronger than the weak force between two lattice points.

  17. Nuclear effects in Neutrino Nuclear Cross-sections

    E-print Network

    S. K. Singh; M. Sajjad Athar

    2007-10-24

    Nuclear effects in the quasielastic and inelastic scattering of neutrinos(antineutrinos) from nuclear targets have been studied. The calculations are done in the local density approximation which take into account the effect of nucleon motion as well as renormalisation of weak transition strengths in the nuclear medium. The inelastic reaction leading to production of pions is calculated in a $\\Delta$ dominance model taking into account the renormalization of $\\Delta$ properties in the nuclear medium.

  18. Safety culture in the nuclear versus non-nuclear organization

    SciTech Connect

    Haber, S.B.; Shurberg, D.A.

    1996-10-01

    The importance of safety culture in the safe and reliable operation of nuclear organizations is not a new concept. The greatest barriers to this area of research are twofold: (1) the definition and criteria of safety culture for a nuclear organization and (2) the measurement of those attributes in an objective and systematic fashion. This paper will discuss a proposed resolution of those barriers as demonstrated by the collection of data across nuclear and non-nuclear facilities over a two year period.

  19. Nuclear Orbiting At Low Energy Nuclear Collisions

    NASA Astrophysics Data System (ADS)

    Ray, Amlan

    2007-05-01

    The emissions of projectile-like fragments from light and medium heavy ion reactions have been discussed. In the case of certain nuclear reactions, such as, 24Mg+ 16O, 28Si+ 12C etc. among light heavy ion systems and 16O+ 89Y, 16O+ 93Nb etc. among medium heavy ion systems, both a 1/sin? angular distribution for projectile-like fragments and strong entrance channel dependence favoring breakup into the entrance channel with large excitation energy have been observed. We think these observations imply the formation of a long-lived orbiting dinuclear complex where the nuclei maintain their identities and nucleon exchange between them is highly suppressed. The analysis of fragment spectra show that the projectile-like fragments coming from such an orbiting dinuclear complex give significantly lower temperature compared to that of the respective compound nucleus.

  20. Weak Nuclear Forces cause the Strong Nuclear Force

    SciTech Connect

    Koschmieder, E. L. [Center for Statistical Mechanics, University of Texas at Austin, Austin TX 78712 (United States)

    2008-05-29

    We determine the strength of the weak nuclear force which holds the lattices of the elementary particles together. We also determine the strength of the strong nuclear force which emanates from the sides of the nuclear lattices. The strong force is the sum of the unsaturated weak forces at the surface of the lattices.

  1. Nuclear district-heating and nuclear long-distance energy

    Microsoft Academic Search

    T. Bohn; G. Dietrich; K. Kugeler; M. Kugeler; H. F. Niessen; H. V. Schlenker

    1974-01-01

    A survey is given about the possibilities of nuclear energy for heating of residential and industrial buildings. The costs and quantities are only a rough estimate. The results show that nuclear energy will have economical advantages in comparison with conventional systems for district-heating. Nuclear District-Heating is a contribution to relieve the environment of pollution, by using waste heat of electricity

  2. United Campuses to Prevent Nuclear War: Nuclear War Course Summaries.

    ERIC Educational Resources Information Center

    Journal of College Science Teaching, 1983

    1983-01-01

    Briefly describes 46 courses on nuclear war available from United Campuses to Prevent Nuclear War (UCAM). These courses are currently being or have been taught at colleges/universities, addressing effects of nuclear war, arms race history, new weapons, and past arms control efforts. Syllabi (with assignments/reading lists) are available from UCAM.…

  3. Nuclear Reactors and Technology

    SciTech Connect

    Cason, D.L.; Hicks, S.C. [eds.

    1992-01-01

    This publication Nuclear Reactors and Technology (NRT) announces on a monthly basis the current worldwide information available from the open literature on nuclear reactors and technology, including all aspects of power reactors, components and accessories, fuel elements, control systems, and materials. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past month. Also included are US information obtained through acquisition programs or interagency agreements and international information obtained through the International Energy Agency`s Energy Technology Data Exchange or government-to-government agreements. The digests in NRT and other citations to information on nuclear reactors back to 1948 are available for online searching and retrieval on the Energy Science and Technology Database and Nuclear Science Abstracts (NSA) database. Current information, added daily to the Energy Science and Technology Database, is available to DOE and its contractors through the DOE Integrated Technical Information System. Customized profiles can be developed to provide current information to meet each user`s needs.

  4. Nuclear Power in Space.

    ERIC Educational Resources Information Center

    Department of Energy, Washington, DC. Nuclear Energy Office.

    Research has shown that nuclear radioisotope power generators can supply compact, reliable, and efficient sources of energy for a broad range of space missions. These missions range from televising views of planetary surfaces to communicating scientific data to Earth. This publication presents many applications of the advancing technology and…

  5. Nuclear reactors. [LMFBR

    Microsoft Academic Search

    1977-01-01

    Disclosed is a nuclear reactor cooled by a freezable liquid has a vessel for containing said liquid and comprising a structure shaped as a container, and cooling means in the region of the surface of said structure for effecting freezing of said liquid coolant at and for a finite distance from said surface for providing a layer of frozen coolant

  6. High temperature nuclear reactors

    Microsoft Academic Search

    G. E. Lockett; S. B. Hosegood

    1973-01-01

    The difficulties which arise, in conducting heat away from the thermal ; shield, which lies between a nuclear reactor core and the concrete pressure ; vessel which contains it, are acute, especially in respect of the underside of ; the core, and in cases where the direction of coolant flow is ventically ; downwards. According to the present invention this

  7. Nuclear spin circular dichroism

    SciTech Connect

    Vaara, Juha, E-mail: juha.vaara@iki.fi [NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu (Finland)] [NMR Research Group, Department of Physics, University of Oulu, P.O. Box 3000, FIN-90014 Oulu (Finland); Rizzo, Antonio [Istituto per i Processi Chimico-Fisici del Consiglio Nazionale delle Ricerche (IPCF-CNR), Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa (Italy)] [Istituto per i Processi Chimico-Fisici del Consiglio Nazionale delle Ricerche (IPCF-CNR), Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa (Italy); Kauczor, Joanna; Norman, Patrick [Department of Physics, Chemistry and Biology, Linköping University, S-58183 Linköping (Sweden)] [Department of Physics, Chemistry and Biology, Linköping University, S-58183 Linköping (Sweden); Coriani, Sonia, E-mail: coriani@units.it [Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Via L. Giorgieri 1, I-34127 Trieste (Italy)] [Dipartimento di Scienze Chimiche e Farmaceutiche, Università degli Studi di Trieste, Via L. Giorgieri 1, I-34127 Trieste (Italy)

    2014-04-07

    Recent years have witnessed a growing interest in magneto-optic spectroscopy techniques that use nuclear magnetization as the source of the magnetic field. Here we present a formulation of magnetic circular dichroism (CD) due to magnetically polarized nuclei, nuclear spin-induced CD (NSCD), in molecules. The NSCD ellipticity and nuclear spin-induced optical rotation (NSOR) angle correspond to the real and imaginary parts, respectively, of (complex) quadratic response functions involving the dynamic second-order interaction of the electron system with the linearly polarized light beam, as well as the static magnetic hyperfine interaction. Using the complex polarization propagator framework, NSCD and NSOR signals are obtained at frequencies in the vicinity of optical excitations. Hartree-Fock and density-functional theory calculations on relatively small model systems, ethene, benzene, and 1,4-benzoquinone, demonstrate the feasibility of the method for obtaining relatively strong nuclear spin-induced ellipticity and optical rotation signals. Comparison of the proton and carbon-13 signals of ethanol reveals that these resonant phenomena facilitate chemical resolution between non-equivalent nuclei in magneto-optic spectra.

  8. Nuclear light bulb

    NASA Technical Reports Server (NTRS)

    Latham, Tom

    1991-01-01

    The nuclear light bulb engine is a closed cycle concept. The nuclear light bulb concept provides containment by keeping the nuclear fuel fluid mechanically suspended in a cylindrical geometry. Thermal heat passes through an internally cooled, fused-silica, transparent wall and heats hydrogen propellant. The seeded hydrogen propellant absorbs radiant energy and is expanded through a nozzle. Internal moderation was used in the configuration which resulted in a reduced critical density requirement. This result was supported by criticality experiments. A reference engine was designed that had seven cells and was sized to fit in what was then predicted to be the shuttle bay mass and volume limitations. There were studies done of nozzle throat cooling schemes to remove the radiant heat. Elements of the nuclear light bulb program included closed loop critical assembly tests done at Los Alamos with UF6 confined by argon buffer gas. It was shown that the fuel region could be seeded with constituents that would block UV radiation from the uranium plasma. A combination of calculations and experiments showed that internal moderation produced a critical mass reduction. Other aspects of the research are presented.

  9. NUCLEAR POWERED EMIGRANT SHIP

    Microsoft Academic Search

    S. Takeuchi; T. Okamura; S. Murakami

    1959-01-01

    A nuclear-powered emigrant ship has been designed and would operate ; between Japan and the East Coast of South America, a distance of 12,000 miles. ; The ship would be 20,000 tons gross with a cruising speed of 23 knots. The main ; propulsion machinery would consist of two sets of 22,000 SRP steam turbines using ; saturated steam. A

  10. Children's (Pediatric) Nuclear Medicine

    MedlinePLUS

    ... pictures and provides molecular information. In many centers, nuclear medicine images can be superimposed with computed tomography (CT) or magnetic resonance imaging (MRI) to produce special views, a practice known as image fusion or co-registration. These views allow the information ...

  11. Controlled Nuclear Fusion.

    ERIC Educational Resources Information Center

    Glasstone, Samuel

    This publication is one of a series of information booklets for the general public published by The United States Atomic Energy Commission. Among the topics discussed are: Importance of Fusion Energy; Conditions for Nuclear Fusion; Thermonuclear Reactions in Plasmas; Plasma Confinement by Magnetic Fields; Experiments With Plasmas; High-Temperature…

  12. General Nuclear Medicine

    MedlinePLUS

    ... pictures and provides molecular information. In many centers, nuclear medicine images can be superimposed with computed tomography (CT) or magnetic resonance imaging (MRI) to produce special views, a practice known as image fusion or co-registration. These views allow the information ...

  13. Producing Nuclear Power

    ERIC Educational Resources Information Center

    Childress, Vincent W.

    2010-01-01

    There is a potential crisis looming related to the world's need for energy. On the one hand, energy demands are growing every day, and could double by 2050. On the other hand, burning of traditional fossil fuels to generate electricity is contributing to the increase in greenhouse gases. Would it be advisable to increase the number of nuclear…

  14. Nuclear Magnetic Resonance Gyroscope

    NASA Astrophysics Data System (ADS)

    Bulatowicz, Michael; Clark, Philip; Griffith, Robert; Larsen, Michael; Mirijanian, James

    2012-06-01

    The navigation grade micro Nuclear Magnetic Resonance Gyroscope (micro-NMRG) being developed by the Northrop Grumman Corporation is concluding the fourth and final phase of the DARPA Navigation Grade Integrated Micro Gyro (NGIMG) program. Traditional MEMS gyros utilize springs as an inherent part of the sensing mechanism, leading to bias and scale factor sensitivity to acceleration and vibration. As a result, they have not met performance expectations in real world environments and to date have been limited to tactical grade applications. The Nuclear Magnetic Resonance Gyroscope (NMRG) utilizes the fixed precession rate of a nuclear spin in a constant magnetic field as an inertial reference for determining rotation. The nuclear spin precession rate sensitivity to acceleration and vibration is negligible for most applications. Therefore, the application of new micro and batch fabrication methods to NMRG technology holds great promise for navigation grade performance in a low cost and compact gyro. This poster will describe the history, operational principles, and design basics of the NMRG including an overview of the NSD designs developed and demonstrated in the DARPA gyro development program. General performance results from phases 3 and 4 will also be presented.

  15. Nuclear receptor coactivators

    Microsoft Academic Search

    Christopher K Glass; David W Rose; Michael G Rosenfeld

    1997-01-01

    Retinoic acid, steroid and thyroid hormones regulate complex programs of gene expression by binding to intracellular receptors that are members of the nuclear receptor superfamily of ligand-dependent transcription factors. Recent studies have led to the identification and cloning of genes encoding coactivator molecules that appear to play important roles in mediating ligand-dependent transcription by members of this family. The identification

  16. Nuclear testing: Executive summary

    SciTech Connect

    Drell, S.; Cornwall, J.; Dyson, F. [and others

    1995-08-01

    The authors have examined the experimental and analytic bases for understanding the performance of each of the weapon types that are currently planned to remain in the US enduring nuclear stockpile. They have also examined whether continued underground tests at various nuclear yield thresholds would add significantly to the confidence in this stockpile in the years ahead. The starting point for this examination was a detailed review of past experience in developing and testing modern nuclear weapons, their certification and recertification processes, their performance margins, and evidence of aging or other trends over time for each weapon type in the enduring stockpile. The findings, as summarized in Conclusions 1 through 6, are consistent with US agreement to enter into a Comprehensive Test Ban Treaty (CTBT) of unending duration, that includes a standard ``supreme national interest`` clause. Recognizing that the challenge of maintaining an effective nuclear stockpile for an indefinite period without benefit of underground tests is an important and also a new one, the US should affirm its readiness to invoke the supreme national interest clause should the need arise as a result of unanticipated technical problems in the enduring stockpile.

  17. Nuclear fuel reprocessing

    Microsoft Academic Search

    Foreman

    1992-01-01

    Reprocessing of spent nuclear fuel is a relatively simple, well-developed, and successful technology. Large, expensive reprocessing facilities are in use, principally in the UK and France, and are under construction in Japan and the CIS. As in most industrial processes, the viability of the process depends on the usefulness of its function and products, operational costs, and the economics of

  18. Nuclear Lipid Signaling

    NSDL National Science Digital Library

    Robin Irvine (University of Cambridge; Department of Pharmacology REV)

    2000-09-05

    The eukaryotic nucleus is surrounded by a double membrane that can be regarded as a part of the endoplasmic reticulum, albeit a specialized part, so it is no particular surprise that lipids are present in nuclei, and that these can change under some conditions. However, what is surprising to many people is that if the nuclear membrane is removed by detergents, there is still a considerable amount of lipid left, and a large number of lipid-synthesizing and metabolizing enzymes. These enzymes are undoubtedly intranuclear, and cannot be discounted as arising from contamination with other cellular fractions. The best characterized of these enzymes are the components of a nuclear polyphosphoinositide cycle that generates phosphatidylinositol-4,5-bisphosphate [PIP2 or PtdIns(4,5)P2]. This PIP2 can in turn be hydrolyzed to diacylglycerol by a phospholipase C (PI-PLC) that is regulated separately from the "classic" plasma membrane PI-PLC. This nuclear diacylglycerol can recruit protein kinase C to the nucleus to phosphorylate substrates (mostly) as yet unidentified. However, that cycle is only the tip of the iceberg, and more and more lipid signaling pathways and players are being implicated as existing within the nucleus. This is a large and confusing literature. This review focuses on the main issues critically assesses the best evidence for what is and is not truly nuclear lipid signaling, and for what such signaling may or may not do.

  19. Nuclear Lipid Signaling

    NSDL National Science Digital Library

    Robin F. Irvine (University of Cambridge; Department of Pharmacology REV)

    2002-09-17

    The eukaryotic nucleus is surrounded by a double membrane that can be regarded as a specialized part of the endoplasmic reticulum, so it is no surprise that lipids are present in nuclei, and that these can change under some conditions. However, what is surprising is that if the nuclear membrane is removed by detergents, there remains a considerable amount of lipid and lipid-synthesizing and metabolizing enzymes. These enzymes are undoubtedly intranuclear, and they cannot be discounted as arising from contamination with other cellular fractions. The best characterized of these enzymes are the components of a nuclear polyphosphoinositide cycle that generates phosphatidylinositol-4,5-bisphosphate [PtdIns(4,5)P2]. This PtdIns(4,5)P2 can in turn be hydrolyzed to diacylglycerol (DAG) by a phospholipase C (PI-PLC) that is regulated separately from the "classic" plasma membrane PI-PLC. This nuclear DAG can recruit protein kinase C from the cytoplasm to the nucleus to phosphorylate substrates, most of which are still unidentified. However, that cycle is only the tip of the iceberg, and more lipid signaling pathways and players are being implicated as existing within the nucleus. This is a large and confusing literature. This review focuses on the main issues and critically assesses the best evidence for what is and is not truly nuclear lipid signaling, and for what such signaling may or may not do.

  20. JPRS report, nuclear developments

    SciTech Connect

    NONE

    1991-02-05

    This report contains articles concerning the nuclear developments of the following countries: (1) China; (2) Japan, North Korea, South Korea; (3) Czechoslovakia; (4) Argentina, Brazil; (5) India, Pakistan; (6) Soviet Union; (7) France, Germany, Canada, Italy, Sweden, Switzerland, United Kingdom; and (8) Ghana, Mauritius.

  1. Nuclear thermal propulsion

    NASA Technical Reports Server (NTRS)

    Bennett, Gary L.

    1991-01-01

    This document is presented in viewgraph form, and the topics covered include the following: (1) the direct fission-thermal propulsion process; (2) mission applications of direct fission-thermal propulsion; (3) nuclear engines for rocket vehicles; (4) manned mars landers; and (5) particle bed reactor design.

  2. Nuclear Power in Japan.

    ERIC Educational Resources Information Center

    Powell, John W.

    1983-01-01

    Energy consumption in Japan has grown at a faster rate than in any other major industrial country. To maintain continued prosperity, the government has embarked on a crash program for nuclear power. Current progress and issues/reactions to the plan are discussed. (JN)

  3. Nuclear Medical Technology Training.

    ERIC Educational Resources Information Center

    Simmons, Guy H., Ed.

    This 1-day colloquium, attended by 23 participants representing societies, government agencies, colleges and universities, and other training programs, was conducted for the purpose of reporting on and discussing the curriculums developed at the University of Cincinnati for training nuclear medical technologists. Pilot programs at both the…

  4. The Nuclear Microprobe

    Microsoft Academic Search

    M. B. H. Breese

    2009-01-01

    Nuclear microprobes are used in many accelerator laboratories for a range of applications in microanalysis and modification of a wide variety of different materials. They are used to focus MeV ion beams to small spot sizes containing currents ranging from femtoamperes to nanoamperes. While microprobes routinely achieve spatial resolutions of a few micrometers, recent breakthroughs in lens design and accelerator

  5. Washington: Hanford Nuclear Reservation

    Atmospheric Science Data Center

    2014-05-15

    ... "before and after" views of the area around the Hanford Nuclear Reservation near Richland, Washington. On June 27, 2000, a fire in the ... since 1996. MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Science Mission Directorate, ...

  6. Evaluated nuclear data library

    SciTech Connect

    Howerton, R.J.; Dye, R.E.; Perkins, S.T.

    1981-10-08

    The Lawrence Livermore National Laboratory (LLNL) collection of evaluated data for neutron-, photon-, and charged-particle-induced reactions is maintained in a computer-oriented system. In this report we recount the history of Evaluated Nuclear Data Library, describe the methods of evaluation, and give examples of input and output representation of the data.

  7. Nuclear Safety Analysis Center

    Microsoft Academic Search

    E. L. Zebroski; M. C. Leverett

    1981-01-01

    Immediately after the Three Mile Island (TMI) accident, the US utility industry asked the Electric Power Research Institute (EPRI) to set up a Nuclear Safety Analysis Center (NSAC) charged with analyzing the accident, deriving lessons to be learned from it, and performing other safety-related functions. Financed by industry subscriptions and staffed with a nucleus of EPRI employees, with loaned employees

  8. Soviet nuclear weapons policy

    SciTech Connect

    Green, W.C.

    1987-01-01

    This book assesses both Western and Soviet literature on Soviet nuclear weapons policy. The author discusses the development of the various Western schools of interpretation and their effect on U.S. policy and provides an introduction to Soviet sources (Russian language as well as translated material). Analytical chapters are followed by comprehensive annotated listings of a broad range of civilian and military publications.

  9. Nuclear weapons effects seminar

    Microsoft Academic Search

    T. Hewlett; B. Haney

    1987-01-01

    The purpose of the seminar was to provide the following information to newly assigned MMEAS survivability engineers: a. An awareness of the magnitude and complexity of the varied nuclear threats. b. An overview of general and specific Air Force policies and procedures in these areas: 1. A.F. Tech Order system 2. Maintenance Data Collection system 3. Hardness Maintenance\\/Hardness Surveillance 4.

  10. Nuclear technology and ageing

    Microsoft Academic Search

    H. M. Banford; R. A. Fouracre

    1999-01-01

    Monitoring the condition and forecasting lifetimes of material within ageing nuclear power plant is a subject of great topicality. Among these materials are the cables of the reactor control systems necessary for safe operation, including controlled shutdown in the event of an emergency. The ability to ensure that such cabling is fit for its purpose is of major concern, but

  11. Nuclear weapons testing

    Microsoft Academic Search

    Heylin

    1988-01-01

    The author examines the history of efforts to ban, or at least constrain, nuclear tests. The issue has been marked by shifts in attitude by the superpowers in recent times. The Reagan Administration sees a comprehensive test ban only as a very long-term goal for the U.S. The Soviets, on the other hand, have been pushing extremely hard lately for

  12. Restructuring nuclear regulations.

    PubMed Central

    Mossman, Kenneth L

    2003-01-01

    Nuclear regulations are a subset of social regulations (laws to control activities that may negatively impact the environment, health, and safety) that concern control of ionizing radiation from radiation-producing equipment and from radioactive materials. The impressive safety record among nuclear technologies is due, in no small part, to the work of radiation safety professionals and to a protection system that has kept pace with the rapid technologic advancements in electric power generation, engineering, and medicine. The price of success, however, has led to a regulatory organization and philosophy characterized by complexity, confusion, public fear, and increasing economic costs. Over the past 20 years, regulatory costs in the nuclear sector have increased more than 250% in constant 1995 U.S. dollars. Costs of regulatory compliance can be reduced sharply, particularly when health and environmental benefits of risk reduction are questionable. Three key regulatory areas should be closely examined and modified to improve regulatory effectiveness and efficiency: a) radiation protection should be changed from a risk-based to dose-based system; b) the U.S. government should adopt the modern metric system (International System of Units), and radiation quantities and units should be simplified to facilitate international communication and public understanding; and c) a single, independent office is needed to coordinate nuclear regulations established by U.S. federal agencies and departments. PMID:12515683

  13. Nuclear waste solutions

    DOEpatents

    Walker, Darrel D. (1684 Partridge Dr., Aiken, SC 29801); Ebra, Martha A. (129 Hasty Rd., Aiken, SC 29801)

    1987-01-01

    High efficiency removal of technetium values from a nuclear waste stream is achieved by addition to the waste stream of a precipitant contributing tetraphenylphosphonium cation, such that a substantial portion of the technetium values are precipitated as an insoluble pertechnetate salt.

  14. Nuclear magnetic resonance imaging

    SciTech Connect

    Young, I.R.

    1984-07-03

    A method of imaging a body by nuclear magnetic resonance wherein volume scanning of a region of the body is achieved by scanning a first planar slice of the region and at least one further slice of the region in the relaxation time for the scan of the first slice.

  15. Preserving Nuclear Grade Knowledge

    SciTech Connect

    Lange, Bob

    2008-02-05

    When people think of the government they think of the President, or Congress, or the Internal Revenue Service (IRS), but there are thousands of people in government-related jobs doing things most don’t really notice everyday. You can find them everywhere, from the space science folks at NASA, to the Federal Bureau of Investigations (FBI) watching out for the bad guys. There are Rangers, and Social Workers, Nurses and Agricultural Managers. They are people working to keep the many facets of the USA rolling. One very diverse bunch is The Department of Energy (DOE) , a group who is expanding the ways we make and save energy to power our cars, homes, and businesses. Tucked away under the DOE is the National Nuclear Security Administration, the NNSA is an agency that maintains the safety, security, and reliability of the U.S. nuclear weapons stockpile. It works to reduce global danger from weapons of mass destruction. It provides the U.S. Navy with safe nuclear propulsion, and it responds to nuclear and radiological emergencies in the United States and abroad, and it supports efforts in science and technology*. (* DOE/NNSA/KCP website info)

  16. Nuclear Radiation Damages Minds!

    ERIC Educational Resources Information Center

    Blai, Boris, Jr.

    Professors Ernest Sternglass (University of Pittsburgh) and Steven Bell (Berry College) have assembled cogent, conclusive evidence indicating that nuclear radiation is associated with impaired cognition. They suggest that Scholastic Aptitude Scores (SATs), which have declined steadily for 19 years, will begin to rise. Their prediction is based on…

  17. Viewpoints on Nuclear Education.

    ERIC Educational Resources Information Center

    Social Education, 1983

    1983-01-01

    The Committee on the Present Danger, Inc., the Committee of Atomic Bomb Survivors in the United States, the World Friendship Center in Hiroshima, two authors, physics and education professors, an English and history teacher, and a high school student comment on nuclear education. (RM)

  18. Nuclear medicine review syllabus

    SciTech Connect

    Kirchner, P.T. (ed.)

    1980-01-01

    A comprehensive review of the major scientific and clinical advances that have occurred in nuclear medicine since the early 1970s is given. The chapters include Radiopharmacology, Instrumentation, Radiation Effects and Radiation Protection, Cardiovascular, Central Nervous System, Endocrinology, Gastroenterology, Genito-Urinary System. Hematology-Oncology, Pulmonary, Radioassay, and the Skeletal System.

  19. Trends in nuclear power

    Microsoft Academic Search

    Hileman

    1982-01-01

    During the late 1970's the future of the U.S. nuclear power industry became clouded by troubling developments. As of 1982, 72 operating reactors supply about 13% of the nation's electricity, but also in 1982, construction was halted or deferred on two reactors in Oklahoma, three in the state of Washington, and 10 in North Carolina, Mississippi, and Tennessee. Although overregulation

  20. Nuclear Powerplant Safety: Operations.

    ERIC Educational Resources Information Center

    Department of Energy, Washington, DC. Nuclear Energy Office.

    Powerplant systems and procedures that ensure the day-to-day health and safety of people in and around the plant is referred to as operational safety. This safety is the result of careful planning, good engineering and design, strict licensing and regulation, and environmental monitoring. Procedures that assure operational safety at nuclear…