Sample records for las tecnicas nucleares

  1. 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

  2. 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 WASTE TECHNICAL REVIEW BOARD Board Meeting: February 16, 2011...the U.S. Nuclear Waste Technical Review Board Will Meet To Discuss DOE Activities...the U.S. Nuclear Waste Technical Review Board will meet in Las Vegas,...

  3. 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…

  4. 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

  5. DETERMINACIÓN DE LAS CURVAS LÍMITE DE OPERACIÓN DE LA VASIJA A PRESIÓN DE UN REACTOR NUCLEAR MEDIANTE EL PROCEDIMIENTO SINTAP

    Microsoft Academic Search

    R. Lacalle; I. Gorrochategui; D. Ferreño; F. Gutiérrez-Solana

    Resumen. En la actualidad el cálculo de las curvas límite de operación de vasijas a presión de reactores nucleares de agua ligera de diseño estadounidense, también conocidas como curvas P-T (presión- temperatura), se lleva a cabo a través de las indicaciones recogidas a tal efecto en el Código ASME. La metodología contemplada en este código, presenta, no obstante, un elevado

  6. Rastreamento de Multiplas Larvas utilizando Tecnicas de Vis~ao Computacional: Resultados Preliminares

    E-print Network

    Lewiner, Thomas (Thomas Lewiner)

    Grupo de Pesquisa INOVISAO para contagem de larvas vivas em testes de larvicidas para o mosquito daRastreamento de M´ultiplas Larvas utilizando T´ecnicas de Vis~ao Computacional: Resultados resultados preliminares de um experimento com filtros de part´iculas para rastreamento de m´ultiplas larvas

  7. 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…

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

    Microsoft Academic Search

    D. M. Long

    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

  9. 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.

  10. 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

  11. INSTITUTQ CUBA-NO DE HIDROGRAFIA DE LAS COSTAS

    E-print Network

    21 0.1.2. Canales y estrechos proximos al litoral cubano 21 0.1.3. Costa N de la Isla de Cuba 22 0 Correci6n tecnica: Jose R. Valdes Quinones (+) Direcci6n tecnica: Cap. Nay. (J) Lie. Rolando Diaz Aztarain Edici6n: Vladimir Garcia Alderete Diseno: Jose Salas Martinez Ilustraciones: Jose Salas Martinez, Tania

  12. Escuela Tecnica Superior de Ingenieros de Caminos, Canales y Puertos (Madrid) Mecanica de Medios Continuos

    E-print Network

    Romero, Ignacio

    /30) Tiempo: 60 min. 1.-- Se considera un s´olido termoel´astico is´otropo y lineal, con coeficiente de dilataci´on . Se pide: a) Ecuaciones que expresan las deformaciones en funci´on de las tensiones y el

  13. Escuela Tecnica Superior de Ingenieros de Caminos, Canales y Puertos (Madrid) Mecanica de Medios Continuos

    E-print Network

    Romero, Ignacio

    dilataci´on . Se pide: 1. Obtener la expresi´on general anterior modificada para incluir las deformaciones ecuaci´on diferencial del balance de momento lineal: div + b = 0 . 4.-- Se considera ahora la deformaci

  14. 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.

  15. RETOS DE LAS HUMANIDADES Y LAS CIENCIAS SOCIALES

    E-print Network

    Islas, León

    RETOS DE LAS HUMANIDADES Y LAS CIENCIAS SOCIALES Consejo Técnico de Humanidades 12,13 y 14 de junio de 2012 12 10:00 horas Políticas de estado en las Humanidades y las ciencias sociales Guillermo las Humanidades y las ciencias sociales: tensiones y ProPuestas María de Ibarrola, CINVESTAV, IPN

  16. LAS VEGAS ALUMNI CHAPTER SCHOLARSHIP

    E-print Network

    Provancher, William

    LAS VEGAS ALUMNI CHAPTER SCHOLARSHIP The Las Vegas Chapter of the University of Utah Alumni,000 each to be applied directly to the successful applicants' tuition, books and/or fees. The Las Vegas documents to: Las Vegas Chapter UUAA Scholarship Applications c/o Scott Brown 10777 W. Twain Ave. #125 Las

  17. Crnica ornitolgica con las citas

    E-print Network

    Carrete, Martina

    Crónica ornitológica con las citas más relevantes del año 2000 Estudio de la avifauna de las balsas seguimiento que ha realizado a la avifauna del paraje. · La crónica ornitológica del año 2000, con las

  18. Introduccion a las funciones multiplicativas

    E-print Network

    Miana, Pedro J.

    Ense~nanza Introducci´on a las funciones multiplicativas PRIMERA PARTE: Funciones aritm art´iculos presentaremos una introducci´on a las funciones multiplicativas, de relevancia en teor bases matem´aticas a estudiantes de esta ´ultima disciplina. Una de las aplicaciones de las funciones

  19. PROBLEMAS EN LAS AULAS

    Microsoft Academic Search

    Eva María Rodríguez Cobos

    2009-01-01

    Hoy en día es difícil encontrar un sólo centro andaluz donde no haya problemas de disciplina dentro de las aulas. Estos problemas dificultan el proceso de enseñanza-aprendizaje. A veces se trata de alumnos puntuales dentro de un aula donde la mayoría del alumnado no presenta problemas conductuales. En estos casos es algo más fácil reconducir la conducta de dicho alumno\\/a,

  20. Underground nuclear weapons testing

    Microsoft Academic Search

    Horgan

    1986-01-01

    Beneath a stretch of mesas and bone-dry lake beds some 100 miles north of Las Vegas, Nev., at least 16 nuclear wareheads were detonated last year, releasing enough energy to destroy a dozen major cities. Since 1951 the United States has exploded more than 680 bombs above and below this landscape, broken only by clumps of sagebrush, scraggy grass, and

  1. 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.

  2. El análisis de las interacciones grupales: las aplicaciones SOCIOS

    Microsoft Academic Search

    José Manuel Cornejo Álvarez

    2006-01-01

    El concepto de ‘interacción’ representa uno de los núcleos fundamentales de la Psicología Social. En los grupos y las organizaciones, esto significa focalizar las explicaciones de los fenómenos en el sistema de relaciones de “influenciarecíproca” que se establece entre sus componentes. El análisis de las matrices de interacción requiere la utilización de algoritmos específicos de tratamiento de la información, no

  3. PROCEDIMIENTO PARA LA REALIZACIN DE LAS FOTOGRAFAS DE LAS ORLAS

    E-print Network

    Rey Juan Carlos, Universidad

    casos, el delegado tendrá que haber comunicado, previamente, a la Gerencia el estudio y/o fotógrafo con orla, y en el caso de que no se puedan realizar las fotografías en el estudio, el delegado de curso de1 PROCEDIMIENTO PARA LA REALIZACIÓN DE LAS FOTOGRAFÍAS DE LAS ORLAS Los estudios fotográficos o

  4. Nuclear rights - nuclear wrongs

    SciTech Connect

    Paul, E.F.; Miller, F.D.; Paul, J.; Ahrens, J.

    1986-01-01

    This book contains 11 selections. The titles are: Three Ways to Kill Innocent Bystanders: Some Conundrums Concerning the Morality of War; The International Defense of Liberty; Two Concepts of Deterrence; Nuclear Deterrence and Arms Control; Ethical Issues for the 1980s; The Moral Status of Nuclear Deterrent Threats; Optimal Deterrence; Morality and Paradoxical Deterrence; Immoral Risks: A Deontological Critique of Nuclear Deterrence; No War Without Dictatorship, No Peace Without Democracy: Foreign Policy as Domestic Politics; Marxism-Leninism and its Strategic Implications for the United States; Tocqueveille War.

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

    Microsoft Academic Search

    2004-01-01

    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

  6. Nuclear challenge

    Microsoft Academic Search

    1979-01-01

    The consequences of the Three Mile Island nuclear incident for the future of nuclear power are examined. Topics covered include nuclear safety, comparative risks, alternative energy sources, waste disposal, and the need for electric power.

  7. 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.

  8. Nuclear Weapon

    MedlinePLUS

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

  9. 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)

  10. 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).

  11. La Universidad de Alicante halla la primera evidencia de una nueva fase en las estrellas de neutrones

    E-print Network

    Escolano, Francisco

    lentamente son menos luminosos en radio y no se pueden observar. "Las misiones espaciales de la última década "pasta nuclear" en el interior de estrellas de neutrones, lo cual puede permitir que futuras misiones de

  12. 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...

  13. 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 metrics: Average Big Las Vegas Strip Casino, 2011 Average Downtown Las Vegas Casino, 2011 Average Reno revenue, broken down by department, for five reporting areas: Statewide, Las Vegas Strip, Downtown Las

  14. 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 ...

  15. Nuclear Power

    NSDL National Science Digital Library

    Stern, David P. (David Peter), 1931-

    This site, created by David P. Stern, is an introduction to nuclear fission, its controlled release in power stations, problems of nuclear waste, and nuclear accidents. A linked web page discusses nuclear weapons, their effect, their ban, and "dirty bombs". This material supplements a previous section on fission in the Sun and the curve of binding energy in "From Stargazers to Starships". A French translation also exists.

  16. 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)

  17. Nuclear Pasta

    NASA Astrophysics Data System (ADS)

    da Silva Schneider, Andre; Horowitz, Charles; Berry, Don; Briggs, Christian

    2014-03-01

    For decades it has been theorized that just below nuclear saturation density matter undergoes a series of phase transitions. These phases, which are expected to exist in core-collapse supernovae and neutron stars, involve a range of exotic nuclear shapes collectively known as nuclear pasta. Recently, Jose Pons and collaborators suggested that ``the maximum period of isolated X-ray pulsars may be the first observational evidence for an amorphous inner crust, ..., possibly owing to the existence of a nuclear pasta phase.'' In this talk we present results of semi-classical molecular dynamics simulations of nuclear pasta and discuss how each phase might contribute to neutron star crust properties.

  18. Nuclear power and nuclear bombs

    Microsoft Academic Search

    A. B. Lovins; L. H. Lovins; L. Ross

    2009-01-01

    The basic assumption that nuclear power is necessary to meet world energy demand is challenged on the grounds that, except for the centrally planned economies, nuclear power is no longer considered to be commercially viable and that it is best to take advantage of the collapse to pursue an alternative program consistent with nonproliferation. Arguments in support of nuclear power

  19. Propiedades de las funciones de medias de las distribuciones truncadas

    Microsoft Academic Search

    P. Zoroa; Gómez

    1981-01-01

    Resumen  En este trabajo, utilizando el concepto de distribuciones truncadas obtenidas de una distribución unidimensional de función\\u000a de distribución dadaF(x), se introduce el de función de mediasm(x), estudiándose sus propiedades. Se obtienen condiciones necesarias para que una función real dada pueda ser función de medias.\\u000a Se plantea la conjetura de que las condiciones que se señalan sean también suficientes, asi como

  20. 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: July Comparison, which examines revenue trends for Statewide, Las Vegas Strip, Downtown Las Vegas Libraries University of Nevada, Las Vegas In addition, the Nevada Gaming Statistics: The Last Six Months

  1. Nuclear blackmail and nuclear balance

    SciTech Connect

    Betts, R.K.

    1987-01-01

    This book raises pointed questions about nuclear saber rattling. More than a dozen cases since the bombing of Hiroshima and Magasaki in which some sort of nuclear threat was used as a sparring technique in tense confrontations are cited. Each incident is described and analyzed. Two theories offered to explain America's use of nuclear threats, the balance of interest theory and the balance of power theory, are contrasted throughout the book. This book helps to fill the gap in the understanding of nuclear weapons and their uses, while pointing out that nuclear bravado could lead to an unintended unleashing of these weapons.

  2. 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.

  3. 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.

  4. Nuclear Fission

    NASA Astrophysics Data System (ADS)

    Denschlag, J. O.

    This chapter first gives a survey on the history of the discovery of nuclear fission. It briefly presents the liquid-drop and shell models and their application to the fission process. The most important quantities accessible to experimental determination such as mass yields, nuclear charge distribution, prompt neutron emission, kinetic energy distribution, ternary fragment yields, angular distributions, and properties of fission isomers are presented as well as the instrumentation and techniques used for their measurement. The contribution concentrates on the fundamental aspects of nuclear fission. The practical aspects of nuclear fission are discussed in http://dx.doi.org/10.1007/978-1-4419-0720-2_57 of Vol. 6.

  5. CONTACT INFORMATION University of Nevada, Las Vegas

    E-print Network

    Hemmers, Oliver

    CONTACT INFORMATION University of Nevada, Las Vegas Howard R. Hughes College of Engineering Construction Management Program 4505 Maryland Parkway ­ Box 454005 Las Vegas, NV 89154-4005 Phone (702) 895-1461 cem.egr.unlv.edu THE UNLV CAMPUS The University of Nevada, Las Vegas is committed to academic

  6. 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

  7. Nuclear Power 

    E-print Network

    2010-01-01

    the following aspects of nuclear power generation: ? Nuclear power's current status and projected trends; ? Environmental impacts; ? Uranium resources and security of supply; ? Costs, safety and regulation; ? Radioactive waste management...'s current status and projected trends; ? Environmental impacts; ? Uranium resources and security of supply; ? Costs, safety and regulation; ? Radioactive waste management and decommissioning; ? Non-proliferation and security; ? Legal frameworks...

  8. 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.

  9. Nuclear accidents

    Microsoft Academic Search

    Mobley

    1982-01-01

    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.

  10. Variación temporal de las constantes fundamentales

    NASA Astrophysics Data System (ADS)

    Landau, S. J.; Vucetich, H.

    La variación temporal de las constantes fundamentales es un problema que ha motivado numerosos trabajos teóricos y experimentales desde la hipótesis de los grandes números de Dirac en 1937. Entre los métodos experimentales y observacionales para establecer restricciones sobre la variación de las constantes fundamentes es importante mencionar: comparación entre relojes atómicos[1], métodos geofísicos[2][3], análisis de sistemas de absorción en quasares[4][5][6] y cotas provenientes de la nucleosíntesis primordial[7]. En un trabajo reciente[5], se reportó una significativa variación en la constante de estructura fina. Intentos de unificar las cuatro interacciones fundamentales dieron como resultado teorías con múltiples dimensiones como las teorías de Kaluza-Klein y teorías de supercuerdas. Estas teorías proporcionan un marco teórico natural para el estudio de la variación temporal de las constantes fundamentales. A su vez, un modelo sencillo para estudiar la variación de la constante de estructura fina, fue propuesto en [8], a partir de premisas muy generales como ser covarianza, invarianza de gauge, causalidad y invarianza ante reversiones temporales en el electromagnetismo. Diferentes versiones de las teorías antes mencionadas coinciden en predecir variaciones temporales de las constantes fundamentales pero difieren en la forma de esta variación[9][10]. De esta manera, las restricciones establecidas experimentalmente sobre la variación de las constantes fundamentales pueden ser una herramienta importante para testear estas diferentes teorías. En este trabajo, utilizamos las cotas provenientes de diversas técnicas experimentales, para testear si las mismas son consistentes con alguna de las teorías antes mencionadas. En particular, establecemos cotas sobre la variación de los parámentros libres de las diferentes teorías como por ejemplo el radio de las dimensiones extras en las teorías tipo Kaluza-Klein.

  11. (Nuclear theory). [Research in nuclear physics

    SciTech Connect

    Haxton, W.

    1990-01-01

    This report discusses research in nuclear physics. Topics covered in this paper are: symmetry principles; nuclear astrophysics; nuclear structure; quark-gluon plasma; quantum chromodynamics; symmetry breaking; nuclear deformation; and cold fusion. (LSP)

  12. LAS EVALUACIONES AMBIENTALES Y SU CONTRIBUCIÓN AL DESARROLLO LOCAL SOSTENIBLE DE LAS PEQUEÑAS COMUNIDADES DE ARGENTINA

    Microsoft Academic Search

    Lorena G. Coria; Silvia I. Alegre; Gonzalo Valencia

    2008-01-01

    Las comunidades locales se configuran como actores estratégicos del desarrollo local. Las condiciones ambientales que acompañan el desarrollo de sus actividades sociales, económicas y culturales, afectan y se ven afectadas a partir de las formas de gestión de los “input” y “output” del sistema ambiental. Los residuos sólidos urbanos configuran una de las principales problemáticas ambientales que se identifican en

  13. 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 to Las Vegas: Faith at Work on the Strip" See the flyer (pdf) March 21, 2014, 3 PM Robert Miller Gaming Colloquium "Las Vegas, an Atemporal History" See the flyer (pdf) All events take place in the Goldfield Room

  14. Nuclear Speckles

    PubMed Central

    Spector, David L.; Lamond, Angus I.

    2011-01-01

    Nuclear speckles, also known as interchromatin granule clusters, are nuclear domains enriched in pre-mRNA splicing factors, located in the interchromatin regions of the nucleoplasm of mammalian cells. When observed by immunofluorescence microscopy, they usually appear as 20–50 irregularly shaped structures that vary in size. Speckles are dynamic structures, and their constituents can exchange continuously with the nucleoplasm and other nuclear locations, including active transcription sites. Studies on the composition, structure, and dynamics of speckles have provided an important paradigm for understanding the functional organization of the nucleus and the dynamics of the gene expression machinery. PMID:20926517

  15. 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)

  16. Nuclear Heavyweights

    NASA Astrophysics Data System (ADS)

    Oganessian, Yuri

    2012-01-01

    The observation of atomic numbers Z that are 40% larger than that of Bi, the heaviest stable element, is an impressive extension of nuclear survival. Although the super heavy nuclei (SHN) are at the limits of Coulomb stability, shell stabilization lowers the ground-state energy, creates a fission barrier, and thereby enables the SHE to exist. The fundamentals of the modern theory concerning the mass limits of nuclear matter have been experimentally verified.

  17. Nuclear telemedicine

    NASA Astrophysics Data System (ADS)

    Morrison, R. T.; Szasz, I. J.

    1990-06-01

    Diagnostic nuclear medicine patient images have been transniitted for 8 years from a regional conununity hospital to a university teaching hospital 700 kiloinetres away employing slow scan TV and telephone. Transruission and interpretation were done at the end of each working day or as circumstances required in cases of emergencies. Referring physicians received the nuclear medicine procedure report at the end of the completion day or within few minutes of completion in case of emergency procedures. To date more than 25 patient studies have been transmitted for interpretation. Blinded reinterpretation of the original hard copy data of 350 patient studies resulted in 100 agreement with the interpretation of transmitted data. This technique provides high quality diagnostic and therapeutic nuclear medicine services in remote hospitals where the services of an on-site nuclear physician is not available. 2. HISTORY Eight years ago when the nuclear medicine physician at Trail Regional Hospital left the Trail area and an other could not be recruited we examined the feasibility of image transmission by phone for interpretation since closing the department would have imposed unacceptable physical and financial hardship and medical constraints on the patient population the nearest nuclear medicine facility was at some 8 hours drive away. In hospital patients would have to be treated either based purely on physical findings or flown to Vancouver at considerable cost to the health care system (estimated cost $1500.

  18. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    Sousa, Leonel

    is actively involved in the work of all his stu- dents, and clearly always has their best interest in mind. Thank you for the guidance and connivance throughout the project. At the Signal Processing Systems would like to thank our families, especially our parents, and our friends and girlfriends

  19. UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO

    E-print Network

    Sousa, Leonel

    consequente cria¸c~ao de impulsos capazes de estimular o c´ortex visual. Os modelos propostos s~ao sistemas de . . . . . . . . . . . . . . . . . . . . . . . . . 14 2.4.2 Error control, adaptive steps and moment . . . . . . . . . . . . . . 14 3 Deterministic

  20. 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

  1. NORMA TECNICA DE Y CALIDAD DE SERVICIO

    E-print Network

    Rudnick, Hugh

    ............................................................................................ 28 TITULO 4-2 SISTEMA DE INFORMACION EN TIEMPO REAL.............................................................................. 25 CAPÍTULO Nº 4 : Exigencias Mínimas para Sistemas de Información y Comunicación ........................................................... 31 TITULO 4-4 SISTEMA DE MONITOREO

  2. 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

  3. Geology of the Las Vegas area

    SciTech Connect

    Tabor, L.L.

    1982-05-01

    This report is principally concerned with the stratigraphy and structure of the basin fill and older rocks of the central part of Las Vegas Valley, particularly that part in which the city of Las Vegas and its outlying districts are located. The interpretation of the lithology and structure of the near-surface Pliocene and Quaternary rocks in the central part of Las Vegas Valley, particularly in the vicinity of the city of Las Vegas, was based on field work and the study of many well logs.

  4. 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.

  5. The Las Campanas Redshift Survey

    NASA Astrophysics Data System (ADS)

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

    1996-10-01

    The Las Campanas Redshift Survey (LCRS) consists of 26,418 redshifts of galaxies selected from a CCD-based catalog obtained in the R band. The survey covers over 700 deg^2^ in six strips, each 1.5^deg^ x 80^deg^, three each in the north and south Galactic caps. The median redshift in the survey is about 30,000 km s^-1^. Essential features of the galaxy selection and redshift measurement methods are described and tabulated here. These details are important for subsequent analysis of the LCRS data. Two-dimensional representations of the redshift distributions reveal many repetitions of voids, on the scale of about 5000 km s^-1^, sharply bounded by large walls of galaxies as seen in nearby surveys. Statistical investigations of the mean galaxy properties and of clustering on the large scale are reported elsewhere. These include studies of the luminosity function, power spectrum in two and three dimensions, correlation function, pairwise velocity distribution, identification of large-scale structures, and a group catalog. The LCRS redshift catalog will be made available to interested investigators at an internet web site and in archival form as an AAS CD-ROM.

  6. Publi / pour citer: -David Dumoulin Kervran, "Las polticas de las ANP (Areas Naturales

    E-print Network

    Paris-Sud XI, Université de

    , (coords.), Viajes en los terruños de la gobernabilidad en las políticas ambientales en América Latina,version1-9Jun2010 Author manuscript, published in "Viajes en los terruños de la gobernabilidad en las

  7. 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.

  8. Nuclear Positioning

    PubMed Central

    Gundersen, Gregg G.; Worman, Howard J.

    2013-01-01

    SUMMARY The nucleus is the largest organelle and is commonly depicted in the center of the cell. Yet during cell division, migration and differentiation, it frequently moves to an asymmetric position aligned with cell function. We consider the toolbox of proteins that move and anchor the nucleus within the cell and how forces generated by the cytoskeleton are coupled to the nucleus to move it. The significance of proper nuclear positioning is underscored by numerous diseases resulting from genetic alterations in the toolbox proteins. Finally, we discuss how nuclear position may influence cellular organization and signaling pathways. PMID:23498944

  9. Evaluating Las Vegas Algorithms ---Pitfalls and Remedies

    E-print Network

    Hoos, Holger H.

    Evaluating Las Vegas Algorithms --- Pitfalls and Remedies Holger H. Hoos and Thomas St Ë? utzle Vegas Algorithms (LVAs). As the run­time be­ havior of LVAs is characterized by random vari­ ables of the proposed methodology for evaluating and com­ paring LVAs. 1 INTRODUCTION Las Vegas algorithms

  10. LAS HORMIGAS (HYMENOPTERA: FORMICIDAE) DE GUATEMALA

    E-print Network

    Schultz, Ted

    LAS HORMIGAS (HYMENOPTERA: FORMICIDAE) DE GUATEMALA 1Department of Entomology, University, Universidad de San Carlos de Guatemala, Guatemala, Correo electrónico: laury.saenz@gmail.com MICHAEL G Guatemala y los países colindantes de la región mesoamericana. Se presen- ta una lista actualizada de las

  11. Las infecciones emergentes transmitidas por garrapatas

    Microsoft Academic Search

    Ingomar Mutz

    2009-01-01

    ResumenLas infecciones transmitidas por garrapatas aparecen por todo el mundo y son bien conocidas desde hace más de 100 años. Algunas enfermedades transmitidas por garrapatas son muy comunes mientras que otras son extremadamente raras. Las técnicas genéticas moleculares modernas (y la mayor disponibilidad de la reacción en cadena de la polimerasa) han llevado al descubrimiento y la clasificación de nuevos

  12. CIENCIAS 99 JULIO SEPTIEMBRE 2010 La opresin colonial, las luchas por la libertad y contra las

    E-print Network

    Islas, León

    26 CIENCIAS 99 JULIO SEPTIEMBRE 2010 La opresión colonial, las luchas por la libertad y contra las enfermedades y las epidemias podrían describirse como historias paralelas, que en determinadas condiciones se entrecruzan. Manuela Sáenz es quizás el arquetipo de la heroína de la independencia y autodeterminación de los

  13. Nuclear explosions

    NASA Astrophysics Data System (ADS)

    Broyles, A. A.

    1982-07-01

    A summary of the physics of a nuclear bomb explosion and its effects on human beings is presented at the level of a sophomore general physics course without calculus. It is designed to supplement a standard text for such a course and problems are included.

  14. 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).

  15. 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…

  16. 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.

  17. Nuclear energy.

    PubMed

    Wilson, Peter D

    2010-01-01

    The technical principles and practices of the civil nuclear industry are described with particular reference to fission and its products, natural and artificial radioactivity elements principally concerned and their relationships, main types of reactor, safety issues, the fuel cycle, waste management, issues related to weapon proliferation, environmental considerations and possible future developments. PMID:21180342

  18. Nuclear rockets

    Microsoft Academic Search

    H. F. York; A. T. Biehl

    1955-01-01

    A systems analysis is made of a class of nuclear-propelled rockets in combination with chemical boosters. Various missions are considered including the delivery of 5000-lb payload 5500 nautical miles, the placement of a satellite in an orbit about the earth and the delivery of a payload to escape velocity. The reactors considered are of the heterogeneous type utilizing graphite fuel

  19. Nuclear accident

    Microsoft Academic Search

    T. Mathews; S. Agrest; G. Borger; M. Lord; W. D. Marbach; W. J. Cook; M. Sheils

    1979-01-01

    A malfunctioning valve at the Three Mile Island power plant in Pennsylvania was the prelude to the worst nuclear accident in U.S. history. Despite assurances that radiation leaked from the plant posed no immediate threat, the population around the plant dwindled as unforced weekend evacuations grew common. Radiation at the power plant site reached 30 mrem\\/hr on March 30. While

  20. Nuclear Medicine Imaging

    MedlinePLUS

    Nuclear Medicine Imaging What you need to know about… A nuclear medicine procedure is sometimes described as ... nuclear medicine scan. Estudios de Imagen de Medicina Nuclear Lo que usted necesita saber acerca de... Un ...

  1. Nuclear Fusion

    NSDL National Science Digital Library

    Astronomical Society of the Pacific

    2008-01-01

    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.

  2. Nuclear Physics

    Microsoft Academic Search

    E. M. Henley; J. P. Schiffer

    1935-01-01

    Nuclear Physics is the branch of physics that deals with the properties and\\u000astructure of matter on the hadronic level. In this article we review briefly\\u000athe history of this field, which has a major role in the development of our\\u000aunderstanding of nature. We then proceed to give an outline of a current\\u000aperspective of the field and of

  3. Nuclear Physics

    E-print Network

    E. M. Henley; J. P. Schiffer

    1998-07-15

    Nuclear Physics is the branch of physics that deals with the properties and structure of matter on the hadronic level. In this article we review briefly the history of this field, which has a major role in the development of our understanding of nature. We then proceed to give an outline of a current perspective of the field and of some of the issues that are now on its frontiers.

  4. Nuclear waste

    SciTech Connect

    Not Available

    1991-09-01

    Radioactive waste is mounting at U.S. nuclear power plants at a rate of more than 2,000 metric tons a year. Pursuant to statute and anticipating that a geologic repository would be available in 1998, the Department of Energy (DOE) entered into disposal contracts with nuclear utilities. Now, however, DOE does not expect the repository to be ready before 2010. For this reason, DOE does not want to develop a facility for monitored retrievable storage (MRS) by 1998. This book is concerned about how best to store the waste until a repository is available, congressional requesters asked GAO to review the alternatives of continued storage at utilities' reactor sites or transferring waste to an MRS facility, GAO assessed the likelihood of an MRSA facility operating by 1998, legal implications if DOE is not able to take delivery of wastes in 1998, propriety of using the Nuclear Waste Fund-from which DOE's waste program costs are paid-to pay utilities for on-site storage capacity added after 1998, ability of utilities to store their waste on-site until a repository is operating, and relative costs and safety of the two storage alternatives.

  5. The nuclear arsenals and nuclear disarmament.

    PubMed

    Barnaby, F

    1998-01-01

    Current world stockpiles of nuclear weapons and the status of treaties for nuclear disarmament and the ultimate elimination of nuclear weapons are summarised. The need for including stockpiles of civil plutonium in a programme for ending production and disposing of fissile materials is emphasized, and the ultimate difficulty of disposing of the last few nuclear weapons discussed. PMID:9838892

  6. 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)

  7. HISTORIA DE LAS MATEMATICAS JUAN PABLO PINASCO

    E-print Network

    Pinasco, Juan Pablo

    cuatrimestre de 2007 " Esto es matem´aticas, Jim, pero no como la conocemos." Dr. Spock, en Viaje a las Bronce (y luego hierro) Aparece una divisi´on de oficios, y gente con tiempo libre Nace el comercio

  8. HISTORIA DE LAS MATEMATICAS JUAN PABLO PINASCO

    E-print Network

    Pinasco, Juan Pablo

    cuatrimestre de 2008 " Esto es matem´aticas, Jim, pero no como la conocemos." Dr. Spock, en Viaje a las oficios, y gente con tiempo libre Nace el comercio Estructuras sociales Ciudades-estados Alianzas o

  9. Graduate Assistantships in Rock Deformation University of Nevada, Las Vegas

    E-print Network

    Ahmad, Sajjad

    Graduate Assistantships in Rock Deformation University of Nevada, Las Vegas With the aide of recent University of Nevada, Las Vegas, Box 454010, 4505 Maryland Parkway, Las Vegas, NV 89154-4010 Burnley

  10. Nuclear energy.

    PubMed

    Grandin, Karl; Jagers, Peter; Kullander, Sven

    2010-01-01

    Nuclear energy can play a role in carbon free production of electrical energy, thus making it interesting for tomorrow's energy mix. However, several issues have to be addressed. In fission technology, the design of so-called fourth generation reactors show great promise, in particular in addressing materials efficiency and safety issues. If successfully developed, such reactors may have an important and sustainable part in future energy production. Working fusion reactors may be even more materials efficient and environmental friendly, but also need more development and research. The roadmap for development of fourth generation fission and fusion reactors, therefore, asks for attention and research in these fields must be strengthened. PMID:20873683

  11. Nuclear security

    SciTech Connect

    Dingell, J.D.

    1991-02-01

    The Department of Energy's (DOE) Lawrence Livermore National Laboratory, located in Livermore, California, generates and controls large numbers of classified documents associated with the research and testing of nuclear weapons. Concern has been raised about the potential for espionage at the laboratory and the national security implications of classified documents being stolen. This paper determines the extent of missing classified documents at the laboratory and assesses the adequacy of accountability over classified documents in the laboratory's custody. Audit coverage was limited to the approximately 600,000 secret documents in the laboratory's custody. The adequacy of DOE's oversight of the laboratory's secret document control program was also assessed.

  12. Prospects for Nuclear Power

    Microsoft Academic Search

    Lucas W. Davis

    2011-01-01

    The prospects for a revival of nuclear power were dim even before the partial reactor meltdowns at the Fukushima nuclear plant. Nuclear power has long been controversial because of concerns about nuclear accidents, proliferation risk, and the storage of spent fuel. These concerns are real and important. In addition, however, a key challenge for nuclear power has been the high

  13. Prospects for Nuclear Power

    Microsoft Academic Search

    Lucas W. Davis

    2012-01-01

    Nuclear power has long been controversial because of concerns about nuclear accidents, storage of spent fuel, and how the spread of nuclear power might raise risks of the proliferation of nuclear weapons. These concerns are real and important. However, emphasizing these concerns implicitly suggests that unless these issues are taken into account, nuclear power would otherwise be cost effective compared

  14. 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 ...

  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. Las acciones preventivas y de mejora en el contexto de las organizaciones empresariales

    Microsoft Academic Search

    Rossio Coya Cáceres; Martín Alberto Ayala López; Iosvani Segura Leyva

    2011-01-01

    Se presenta una herramienta que facilita el control de las acciones preventivas y de mejora en organizaciones que tienen implantado, o pretenden implantar, el sistema de dirección y gestión empresarial, y como parte de este los sistemas de seguridad y salud en el trabajo, calidad, competencia del laboratorio de calibración y ambiental. La mejora es un requisito establecido en las

  17. Estudio de la Responsabilidad Social de las Empresas. Aplicaciones a las empresas de Gran Canaria

    Microsoft Academic Search

    José Boza Chirino; Daniel Pérez Estevez

    2009-01-01

    La Responsabilidad Social de las Empresas es una de las apuestas de futuro en Europa. Los planteamientos de RSC se caracterizan por el deseo incorporar en su gestión un conjunto de directrices que tengan como resultados acciones positivas (éticas, solidarias y medioambientales) frente a los grupos de interés. Para medir la percepción que tienen los empresarios en materia de Responsabilidad

  18. La relación entre las agencias de comunicación en mercadeo y sus clientes: visión de las agencias

    Microsoft Academic Search

    Claudia Margarita Gómez Ramírez

    2009-01-01

    Resumen En este estudio se pretende identificar el actual comportamiento de los factores para el éxito y los amenazantes que inciden sobre la continuidad de una cuenta, una relación y por tanto del negocio desde la percepción de las agencias de publicidad, medios, eventos y relaciones públicas. Se examinaron puntos tales como las expectativas, el desempeño, la vulnerabilidad de la

  19. USOS Y APROPIACIONES DE ESPACIOS PBLICOS DE SEGN LAS POSICIONES EN LAS RELACIONES ECONMICAS,

    E-print Network

    Paris-Sud XI, Université de

    1 USOS Y APROPIACIONES DE ESPACIOS P�BLICOS DE MONTEVIDEO SEG�N LAS POSICIONES EN LAS RELACIONES..............................................................................................................2 DISCURSO ACERCA DEL ESPACIO P�BLICO EN MONTEVIDEO.........................4 CIUDAD VIEJA.........................................................................................192 RESUMEN En este documento se aborda el uso y la percepción de los espacios públicos en Montevideo

  20. Las Vegas bets on a sure winner

    SciTech Connect

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

    1980-09-01

    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 used initially at area treatment facilities because of its proven dewatering characteristics, and the alum treatment mode should receive further testing. (4 diagrams, 1 map, 2 photos, 6 tables)

  1. 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.

  2. HYBRID NUCLEAR CYCLES FOR NUCLEAR FISSION SUSTAINABILITY

    Microsoft Academic Search

    Mireia Piera; José M. Martínez-Val

    Nuclear fission can play and must play an important role in paving the road to Energy Sustainability. Nuclear Fission does not produce CO2 emissions, and it is already exploited at commercial level with the current NPP (Nuclear Power Plants). Most of them are based on LWR reactors, which have a very good safety record. It must be noted, however, that

  3. 3960 Howard Hughes Pkwy Las Vegas, NV 89169

    E-print Network

    Hemmers, Oliver

    3960 Howard Hughes Pkwy Suite 150 Las Vegas, NV 89169 www.colliers.com/lasvegas Colliers on the Las Vegas "Strip" and in Downtown Las Vegas. As typical of our team, we have extrapolated data on both. In the first six months of 2013, three stories dominate the Las Vegas gaming and tourism sector. BACCARAT

  4. Nuclear Renaissance Requires Nuclear Enlightenment W J Nuttall

    E-print Network

    Aickelin, Uwe

    Nuclear Renaissance Requires Nuclear Enlightenment W J Nuttall Judge Business School, Cambridge would allow for a nuclear renaissance founded upon principles of nuclear enlightenment. Keywords: Agent. This author has recently published a book entitled Nuclear Renaissance ­ technologies and policies

  5. 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…

  6. 'NuMex Las Cruces' Cayenne pepper

    Technology Transfer Automated Retrieval System (TEKTRAN)

    ‘NuMex Las Cruces’ is a high-yielding, high-heat, cayenne pepper with a maturity similar to that of ‘Large Red Thick’, an early maturing cayenne cultivar. In addition, it possesses resistance to curly top virus, having resistance to at least three Curtovirus species: Beet curly top virus (BCTV; for...

  7. Servicios: Las nuevas armas del mercadeo

    Microsoft Academic Search

    Raquel Puente

    2000-01-01

    Ofrecer un valor superior es cada vez más difícil. Los adelantos tecnológicos y la lucha por la lealtad de los consumidores han creado productos que pueden satisfacer casi cualquier necesidad. Agregar servicios a los productos puede ser la nueva clave de las empresas exitosas.

  8. Segunda parte LAS CIUDADES Y LOS VECINOs

    E-print Network

    Paris-Sud XI, Université de

    italianas2 , se propaga al resto de las ciudades del Occidente mediterráneo a finales de la Edad Media. Los permiten conocer, con mayor o menor precisión, su vida económica, social, política y cultural, en la Baja Edad Media. Empero, la gestión de los servicios colectivos por la oligarquía que monopolizaba el

  9. Wilson Botanical Garden Las Cruces Biological Station

    E-print Network

    Sekercioglu, Cagan Hakki

    Wilson Botanical Garden Las Cruces Biological Station Apdo. 73-8257 San Vito, Coto Brus, COSTA RICA you can do to help at the Wilson Botanical Garden, please email us at lcruces@ots.ac.cr. Tree Tour finally finished the Wilson Botanical Garden Tree Tour booklet in both Spanish and English. The self

  10. Evaluating Las Vegas Algorithms: Pitfalls and Remedies

    Microsoft Academic Search

    Holger H. Hoos; Thomas Stützle

    1998-01-01

    Stochastic search algorithms are among the most sucessful approaches for solving hard combinato- rial problems. A large class of stochastic search approaches can be cast into the framework of Las Vegas Algorithms (LVAs). As the run-time be- havior of LVAs is characterized by random vari- ables, the detailed knowledge of run-time distri- butions provides important information for the analysis of

  11. 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

  12. Las Cruces MPO 2040 Metropolitan Transportation Plan 

    E-print Network

    Las Cruces Metropolitan Planning Organization

    2010-06-09

    , planning, and editing processes: Bob Petacolas, Do?a Ana County Renee Padilla, Do?a Ana County Martin Espana, Do?a Ana County Dennis Quintana, Do?a Ana County America Terrazas, Del Cerro Community Center Adam Ochoa, City of Las Cruces Susan Lowell...

  13. 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

  14. 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

  15. The city of Las Vegas has a relatively short histo-ry. When Las Vegas was incorporated in 1911 with

    E-print Network

    Hemmers, Oliver

    The city of Las Vegas has a relatively short histo- ry. When Las Vegas was incorporated in 1911 that the idea of a rail system for Las Vegas first surfaced (BusinessWeek, 1973). By then, it was clear that ur. The proponents of a rail-based Personal Transit System in the early 1970s were quite optimistic that Las Vegas

  16. Valoración de las ideas rectoras de la educación superior cubana. Las nuevas tecnologías en la universidad de hoy

    Microsoft Academic Search

    Georgina Marilyn Basanta Marrero; Alexander Vázquez Roque; Melva Marcelo González

    2009-01-01

    La educación cubana exhibe en la actualidad un fuerte espíritu transformador que alcanza de forma creciente a las didácticas particulares de las ciencias. Una de sus expresiones está asociada a la introducción de las Tecnologías de la Información y la Comunicación (TIC). La alternativa de introducir las computadoras y sus redes en apoyo a la enseñanza y el aprendizaje, comienza

  17. La utilidad de los estados contables en las empresas para evaluar el retorno de las inversiones públicas

    Microsoft Academic Search

    Clara Muñoz; Adolfo Millán

    2001-01-01

    Habitualmente, los gobernantes deciden las inversiones en infraestructuras tomando como referencia las mejoras en el bienestar que éstas vayan a generar en los ciudadanos y en su análisis cuantitativo sólo se valora la perspectiva del coste que supone su financiación. Sin embargo, las inversiones públicas en infraestructuras generan también una rentabilidad para las administraciones que se puede medir en términos

  18. 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.

  19. 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.

  20. Panel report: nuclear physics

    Microsoft Academic Search

    Joseph A Carlson; Edward P Hartouni

    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

  1. Development of nuclear physics

    Microsoft Academic Search

    Perfilov

    1973-01-01

    A capsule history of developments in nuclear physics at the Institute ; over the last fifty years is given. Particular attention is devoted to the ; method of nuclear emulsions and the study of nuclear reactions through the ; interaction of high-energy particles with heavy nuclei. Nuclear fission with ; negative pions and protons and fragmentation are included in the

  2. Nuclear analytical chemistry

    Microsoft Academic Search

    D. Brune; B. Forkman; B. Persson

    1984-01-01

    This book covers the general theories and techniques of nuclear chemical analysis, directed at applications in analytical chemistry, nuclear medicine, radiophysics, agriculture, environmental sciences, geological exploration, industrial process control, etc. The main principles of nuclear physics and nuclear detection on which the analysis is based are briefly outlined. An attempt is made to emphasise the fundamentals of activation analysis, detection

  3. 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.

  4. 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

  5. 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.

  6. 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.

  7. 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.

  8. Nuclear age: Take two?

    Microsoft Academic Search

    1993-01-01

    The Energy Policy Act of 1992 removes many institutional obstacles impeding nuclear energy`s further development and expansion. Coupled with the important progress being made by the industry in implementing the Nuclear Power Oversight Committee`s (NPOC) Strategic Plan for Building New Nuclear Power Plants, the stage is now set for new nuclear plant orders by the mid-1990s, if advanced nuclear plant

  9. Nuclear Structure Aspects in Nuclear Astrophysics

    SciTech Connect

    Smith, Michael Scott [ORNL

    2006-12-01

    Nuclear Astrophysics as a broad and diverse field of study can be viewed as a magnifier of the impact of microscopic processes on the evolution of macroscopic events. One of the primary goals in Nuclear Astrophysics is the understanding of the nucleosynthesis processes that take place in the cosmos and the simulation of the correlated stellar and explosive burning scenarios. These simulations are strongly dependent on the input from Nuclear Physics which sets the time scale for all stellar dynamic processes--from giga-years of stellar evolution to milliseconds of stellar explosions--and provides the basis for most of the signatures that we have for the interpretation of these events--from stellar luminosities, elemental and isotopic abundances to neutrino flux from distant supernovae. The Nuclear Physics input comes through nuclear structure, low energy reaction rates, nuclear masses, and decay rates. There is a common perception that low energy reaction rates are the most important component of the required nuclear physics input; however, in this article we take a broader approach and present an overview of the close correlation between various nuclear structure aspects and their impact on nuclear astrophysics. We discuss the interplay between the weak and the strong forces on stellar time scales due to the limitations they provide for the evolution of slow and rapid burning processes. The effects of shell structure in nuclei on stellar burning processes as well as the impact of clustering in nuclei is outlined. Furthermore we illustrate the effects of the various nuclear structure aspects on the major nucleosynthesis processes that have been identified in the last few decades. We summarize and provide a coherent overview of the impact of all aspects of nuclear structure on nuclear astrophysics.

  10. Geodetic leveling data used to define historical height changes between Tonopah Junction and Las Vegas, Nevada

    SciTech Connect

    Gilmore, T.D.

    1992-12-31

    This report documents geodetic leveling data for a survey route following US Highway 95 from Tonopah Junction, approximately 50 km west of Tonopah, Nevada, to Las Vegas, Nevada. The survey route passes immediately south of the potential site for a high-level nuclear waste repository at Yucca Mountain in southern Nevada. Comparisons among the results of the several repeated levelings along this survey route provide a partial basis for evaluating contemporary crustal deformation patterns in the vicinity of the Yucca Mountain site and the relation between any such deformation and geologic structures known or suspected to have been active during Quaternary time.

  11. 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

  12. VISITAS A LAS PÁGINAS DE UNA WEB DOCENTE UNIVERSITARIA

    Microsoft Academic Search

    Rafael Moreno; Rafael Martínez; Irene Martín

    2004-01-01

    El trabajo estudia las visitas recibidas durante un año y medio por las diferentes páginas de una web utilizada como herramienta complementaria para la docencia de una materia en una universidad presencial. Encuentra que dicho número es mayor, aunque de modo no significativo, en las páginas que contienen materiales para la teoría y prácticas de la mate- ria, y significativamente

  13. Karen A. Kemtes University of Nevada, Las Vegas

    E-print Network

    Ahmad, Sajjad

    Kemtes 1 Karen A. Kemtes University of Nevada, Las Vegas Department of Psychology 4505 Maryland to Stimulate Competitive Research (NSF - EPSCoR) (funded) Faculty PI: K. A. Kemtes University of Nevada, Las of Health) (funded) Faculty PI: K. A. Kemtes University of Nevada, Las Vegas. Total cost: $5,500 #12;Kemtes

  14. Tecnologas de la Informacin y de las Comunicaciones (TIC)

    E-print Network

    Escolano, Francisco

    1 Tecnologías de la Información y de las Comunicaciones (TIC) Plan Sectorial 2008-2012 #12;2 1 Tecnologías de la Información y de las Comunicaciones (TIC) Planificación Estratégica de la Universidad de y transparencia. Se promoverá especialmente: Comportamiento ético en el uso de las TIC. Actitud

  15. John A. Mercer, Ph. D. University of Nevada, Las Vegas

    E-print Network

    Ahmad, Sajjad

    Mercer 1 John A. Mercer, Ph. D. University of Nevada, Las Vegas Department of Kinesiology, School of Allied Health Sciences 4505 Maryland Parkway, Box 453034 Las Vegas, NV 89154-3034 (702)895-4672 john of Nevada, Las Vegas 2007 to present Department Chair & Associate Professor, Department of Kinesiology

  16. LAS VEGAS-RELATED WEBSITES GENERAL RELOCATION GUIDES

    E-print Network

    Cho, Hokwon

    LAS VEGAS-RELATED WEBSITES GENERAL RELOCATION GUIDES http://jobs.unlv.edu/moving-to-lv.html www.lvrelocationguide.org http://lasvegas.about.com/od/movingtovegas/Moving_to_Vegas.htm EDUCATION UNLV Home Page ­ www.cityofhenderson.com/index.php City of Las Vegas ­ www.lasvegasnevada.gov City of North Las Vegas - http

  17. 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....

  18. 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

  19. ?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.

  20. 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.

  1. Nuclear energy in perspective

    NASA Astrophysics Data System (ADS)

    Trauger, D. B.

    1981-09-01

    The author offers personal comments on what he feels is the current state of nuclear energy, and forecasts nuclear's role in the future. Touched on are: Three Mile Island; proliferation; and breeder technology.

  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 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.

  4. 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.

  5. Introduction to Nuclear Physics

    SciTech Connect

    Masarik, Jozef [Department of Nuclear Physics, Comenius University, Mlynska dolina F1, 842 48 Bratislava (Slovakia)

    2010-01-05

    A review of the basics topics of 'classical' nuclear physics is given. Masses of nuclei are analyzed using liquid- drop model. Basic characteristics of alpha and beta decays are analyzed. Simplest nuclear models are also introduced.

  6. Catalysinganenergyrevolution Nuclear Failures

    E-print Network

    Laughlin, Robert B.

    construction Fast Breeder Reactor (FBR) GCR reactor Heavy of nuclear power 10 Safety: lessons learned or lessons still to come? 12 Security: secrecy and unpredictable, this merged with Framatome, the nuclear reactor builder, to create the Areva group. Currently, 96

  7. Improvised Nuclear Device

    MedlinePLUS

    ... Improvised Nuclear Device (IND) is a type of nuclear weapon. When an IND explodes, it gives off four types of energy: a blast wave, intense light, heat, and radiation. The bomb dropped on Hiroshima, Japan, at the ...

  8. Nuclear stress test

    MedlinePLUS

    ... Persantine stress test; Thallium stress test; Stress test - nuclear; Adenosine stress test; Regadenoson stress test ... had a heart attack The results of a nuclear stress test can help your doctor: Determine how ...

  9. Nuclear-powered ships

    SciTech Connect

    Not Available

    1992-07-01

    This paper reports that using Puget Sound Naval Shipyard as a model, GAO examined the Navy's accounting practices at nuclear shipyards. In fiscal year 1991, Puget Sound worked on 24 nuclear-powered and three conventionally powered ships. About 31 percent of the workdays and 35 percent of total costs were for nuclear work. The average cost per workday for nuclear labor was 25 percent higher than for non-nuclear work, and the average cost per day for overhead for nuclear work was about 60 percent higher. These higher costs are due to the complexity of nuclear work, which requires a higher level of services, and the higher cost of specially trained workers and specialized shipyard departments that support nuclear work.

  10. Nuclear fuel element

    Microsoft Academic Search

    J. S. Armijo; L. F. Coffin

    1980-01-01

    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

  11. Nuclear power. [Textbook

    Microsoft Academic Search

    Duderstadt

    1979-01-01

    Nuclear power generation is treated in this text. It covers the range from the fundamental concepts involved in the release of the energy contained in the atomic nucleus to descriptions of the principal types of nuclear power systems in use throughout the world today. It looks ahead to advanced nuclear reactor concepts such as the fast breeder reactor and controlled

  12. 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…

  13. The plant nuclear envelope

    Microsoft Academic Search

    Annkatrin Rose; Shalaka Patel; Iris Meier

    2004-01-01

    This review summarizes our present knowledge about the composition and function of the plant nuclear envelope. Compared with animals or yeast, our molecular understanding of the nuclear envelope in higher plants is in its infancy. However, fundamental differences in the structure and function of the plant and animal nuclear envelope have already been found. Here, we compare and contrast these

  14. Nuclear fact book

    Microsoft Academic Search

    O. F. Hill; A. M. Platt; J. V. Robinson

    1983-01-01

    This reference provides significant highlights and summary facts in the following areas: general energy; nuclear energy; nuclear fuel cycle; uranium supply and enrichment; nuclear reactors; spent fuel and advanced repacking concepts; reprocessing; high-level waste; gaseous waste; transuranic waste; low-level waste; remedial action; transportation; disposal; radiation information; environment; legislation; socio-political aspects; conversion factors; and a glossary. (GHT)

  15. Nuclear power's future

    Microsoft Academic Search

    Leepson

    1983-01-01

    The nuclear power industry is simultaneously experiencing the best and the worst of times. Since the Three Mile Island incident, the industry has been met with great government and public concern over the safety of nuclear power and has accordingly made efforts to improve safety procedures. Although pending legislation would streamline the licensing process for nuclear power plants and encourage

  16. 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…

  17. 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

  18. 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.

  19. 155ENSEANZA DE LAS CIENCIAS, 2000, 18 (2), 155-169 MS ALL DE LAS IDEAS PREVIAS

    E-print Network

    Campanario, Juan Miguel

    155ENSEÑANZA DE LAS CIENCIAS, 2000, 18 (2), 155-169 MÁS ALLÁ DE LAS IDEAS PREVIAS COMO DIFICULTADES METACOGNITIVAS DE LOS ALUMNOS DE CIENCIAS CAMPANARIO, JUAN MIGUEL1 y OTERO, JOSÉ C. 1 E-mail: fscampanario@alcala.es 2 E-mail: fsotero@alcala.es Grupo de Investigación en Aprendizaje de las Ciencias. Departamento de

  20. Introduction to Nuclear Astrophysics

    SciTech Connect

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

    2010-03-01

    In the first lecture of this volume, we will present the basic fundamental ideas regarding nuclear processes occurring in stars. We start from stellar observations, will then elaborate on some 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. At the end, the current knowledge regarding the origin of the elements is briefly summarized. This lecture is directed towards the student of nuclear astrophysics. Our intention is to present seemingly unrelated phenomena of nuclear physics and astrophysics in a coherent framework.

  1. LAS ILUSTRACIONES EN LA ENSEÑANZA-APRENDIZAJE DE LAS CIENCIAS. ANÁLISIS DE LIBROS DE TEXTO

    Microsoft Academic Search

    F. JAVIER; JUAN DE DIOS

    2002-01-01

    Resumen. Este trabajo centra su atención en la importancia que poseen las ilustraciones que utilizan los libros de texto de ciencias para la comprensión de su contenido. Para ello se parte de una fundamentación teórica en cuanto a los requisitos que deberían cumplir aquéllas para favorecer su adecuado procesamiento, así como la diferente morfología que suelen presentar en los libros

  2. EVOLUCIÓN DE LAS POLÍTICAS CONTRA LA POBREZA: DE LA PREVISIÓN SOCIAL A LAS TRANSFERENCIAS CONDICIONADAS

    Microsoft Academic Search

    Jairo Núñez; Laura Cuesta

    2006-01-01

    Durante los últimos años, el Estado colombiano ha realizado grandes avances en la construcción de políticas y programas dirigidos a la población más pobre y vulnerable. Una de las grandes innovaciones ha sido el programa Familias en Acción, que consiste en la entrega de transferencias monetarias condicionadas a la participación del hogar en controles de crecimiento y desarrollo, y a

  3. 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.

  4. 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.

  5. Nuclear lamins: building blocks of nuclear architecture

    E-print Network

    Goldman, Robert D.

    Biological Laboratory, Woods Hole, Massachusetts 02543, USA Nuclear lamins were initially identified is expressed in all cells, except for mature sperm (Liu et al. 2000). Dro- sophila melanogaster has two lamin

  6. British nuclear policymaking

    SciTech Connect

    Bowie, C.J.; Platt, A.

    1984-01-01

    This study analyzes the domestic political, economic, and bureaucratic factors that affect the nuclear policymaking process in Great Britain. Its major conclusion is that, although there have been changes in that process in recent years (notably the current involvement of a segment of the British public in the debate about the deployment of intermediate-range nuclear forces), future British nuclear policymaking will remain much what it has been in the past. Three ideas are central to understanding British thinking on the subject: (1) Britain's long-standing resolve to have her own national nuclear force is largely traceable to her desire to maintain first-rank standing among the nations of the world in spite of loss of empire. (2) Financial considerations have always been important--so much so that they have usually dominated issues of nuclear policy. (3) The executive branch of government dominates the nuclear policymaking process but does not always present a united front. The United States heavily influences British nuclear policy through having supplied Britain since the late 1950s with nuclear data and components of nuclear weapon systems such as Polaris and Trident. The relationship works both ways since the U.S. depends on Britain as a base for deployment of both conventional and nuclear systems.

  7. Nuclear economics: Issues and facts

    SciTech Connect

    Hudson, C.R.

    1993-12-31

    Nuclear economics has become on the more prominent topics related to nuclear power. Beyond the subjects of nuclear safety and waste disposal, questions and concerns of nuclear power economics have emerged with growing frequency in utility board rooms, in state and federal regulatory proceedings, and in the media. What has caused nuclear power economics to become such a popular topic? This paper addresses issues and facts related to historical nuclear plant costs, new nuclear plant projections, and warning signals for future plants.

  8. 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.

  9. Coherent Nuclear Radiation

    E-print Network

    V. I. Yukalov; E. P. Yukalova

    2004-06-22

    The main part of this review is devoted to the comprehensive description of coherent radiation by nuclear spins. The theory of nuclear spin superradiance is developed and the experimental observations of this phenomenon are considered. The intriguing problem of how coherence develops from initially incoherent quantum fluctuations is analysed. All main types of coherent radiation by nuclear spins are discussed, which are: free nuclear induction, collective induction, maser generation, pure superradiance, triggered superradiance, pulsing superradiance, punctuated superradiance, and induced emission. The influence of electron-nuclear hyperfine interactions and the role of magnetic anisotropy are studied. Conditions for realizing spin superradiance by magnetic molecules are investigated. The possibility of nuclear matter lasing, accompanied by pion or dibaryon radiation, is briefly touched.

  10. 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.

  11. Plant nuclear photorelocation movement.

    PubMed

    Higa, Takeshi; Suetsugu, Noriyuki; Wada, Masamitsu

    2014-06-01

    Organelle movement and positioning are essential for proper cellular function. A nucleus moves dynamically during cell division and differentiation and in response to environmental changes in animal, fungal, and plant cells. Nuclear movement is well-studied and the mechanisms have been mostly elucidated in animal and fungal cells, but not in plant cells. In prothallial cells of the fern Adiantum capillus-veneris and leaf cells of the flowering plant Arabidopsis thaliana, light induces nuclear movement and nuclei change their position according to wavelength, intensity, and direction of light. This nuclear photorelocation movement shows some common features with the photorelocation movement of chloroplasts, which is one of the best-characterized plant organelle movements. This review summarizes nuclear movement and positioning in plant cells, especially plant-specific nuclear photorelocation movement and discusses the relationship between nuclear photorelocation movement and chloroplast photorelocation movement. PMID:24336444

  12. 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.

  13. 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... caduco, alejado de las nuevas tendencias renovadoras. Esta crítica, que testifica la falta, poca o moderada popularidad de Usigli entre los jóvenes, ha provocado justi ficadas respuestas por parte del mismo Usigli. Sus últimas producciones, Los viejos...

  14. Nuclear Proliferation Challenges

    SciTech Connect

    Professor William Potter

    2005-11-28

    William C. Potter, Director of the Center for Non Proliferation Studies and the Center for Russian and Eurasian Studies at the Monterey Institute of International Studies, will present nuclear proliferation challenges following the 2005 Nuclear Non-Proliferation Treaty (NPT) Review Conference. In addition to elucidating reasons for, and implications of, the conference’s failure, Dr. Potter will discuss common ground between nuclear proliferation and terrorism issues and whether corrective action can be taken.

  15. Absolute nuclear material assay

    DOEpatents

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

    2010-07-13

    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.

  16. 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.

  17. The Plant Nuclear Envelope

    Microsoft Academic Search

    David E. Evans; Sarah L. Irons Katja Graumann; John Runions

    The nuclear envelope is an important but poorly studied dynamic membrane system in plants. In particular, surprisingly little\\u000a is known about the proteins of the higher plant nuclear envelope and their interactions. While structurally similar to the\\u000a nuclear envelope of other kingdoms, unique properties suggest significant differences. For instance, plants lack sequence\\u000a homologues of the lamins and instead of centrosomes

  18. Financing the Nuclear Renaissance

    E-print Network

    Nuttall, William J; Taylor, S

    1. Introduction There is much talk about, and some action towards, a nuclear renaissance in Europe and North America. Elsewhere in the world, particularly in East Asia, the development of nuclear energy has been a story of continuous growth... interest in nuclear energy. Plausible claims have been made by NPP design companies that their newer designs will be simpler, quicker and cheaper to build although such improvements are unlikely to be dramatic for the earliest projects in any renaissance...

  19. Introduccin a las hormigas de la regin Neotropical

    E-print Network

    Villemant, Claire

    .AgostiyN.F.Johnson....................................................................................................................................... 45 Capítulo 3 Sinopsis de las hormigas de la región Neotropical F.FernándezyM.Ospina

  20. Nuclear energy synergetics

    SciTech Connect

    Harms, A.A.; Heindler, M

    1982-01-01

    This book presents information on the following topics: nuclear processes; reaction and reactor systematics; spallation-fission integration; nuclear fuel trajectories; fusion-fission symbiont; fissile-fusile fuel trajectories; the (D-T) fusion-fission hybrids; the receding horizon; advanced fusion fuels; fusion satellite reactors; blanket components; tritium trajectory parametrization; fissile fuel trajectory characterization; Li 6-hybrid breeder; nuclear catalysis and mass-energy sustainability; stockpile inventory; reaction notation; neutron multiplication; fuel rejuvenation; nuclear fuel balance; fission and beam power; and extended fuel flow.

  1. Comprehensive Nuclear Materials

    SciTech Connect

    Konings, Dr. Rudy J. M. [European Commission Joint Research Centre; Allen, Todd R. [University of Wisconsin, Madison; Stoller, Roger E [ORNL; Yamanaka, Prof. Shinsuke [Osaka University

    2012-01-01

    This book encompasses a rich seam of current information on the vast and multidisciplinary field of nuclear materials employed in fission and prototype fusion systems. Discussion includes both historical and contemporary international research in nuclear materials, from Actinides to Zirconium alloys, from the worlds leading scientists and engineers. Synthesizes pertinent current science to support the selection, assessment, validation and engineering of materials in extreme nuclear environments. The work discusses the major classes of materials suitable for usage in nuclear fission, fusion reactors and high power accelerators, and for diverse functions in fuels, cladding, moderator and control materials, structural, functional, and waste materials.

  2. 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.

  3. 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.

  4. 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

  5. Nuclear Reactions and Reactor Safety

    E-print Network

    Onuchic, José

    Nuclear Reactions and Reactor Safety DO NOT LICK We haven't entirely nailed down what element nuclear chain reaction, 1938 #12;Nuclear Chain Reactions Do nuclear chain reactions lead to runaway explosions? or ? -Controlled nuclear chain reactions possible: control energy release/sec -> More

  6. 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,"…

  7. 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.

  8. 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

  9. 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

  10. The Nuclear Revolution, Relative Gains, and International Nuclear Assistance

    E-print Network

    Kroenig, Matthew

    2006-01-01

    Organizations, accidents, and nuclear weapons. Princeton,for accident exists even in advanced nuclear powers, thenuclear weapons, and the number of states controlling them, increases, so too does the potential for a nuclear accident.

  11. 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.

  12. Underground for nuclear protection

    Microsoft Academic Search

    2009-01-01

    A number of countries, including the United States, have relied for some years on underground construction for protection against the effects of a nuclear attack. Depending upon the threat, such structures can offer protection against nuclear weapons - nearly complete protection against fallout radiation and a very high degree of protection against blast effects. Current planning in the United States

  13. [Nuclear theory: Annual report

    SciTech Connect

    Iachello, F.; Alhassid, Y.; Kusnezov, D.

    1991-12-31

    This report discusses topics on : nuclear structure models; algebraic models of hadronic structure; nuclear reactions; hot rotating nuclei; chaos in nuclei; signatures of the quark-gluon plasma; hadronic spectroscopy; octupole collectivity in nuclei; finite-temperature methods for the many-body problem; and classical limit of algebraic hamiltonians. (LSP)

  14. (Nuclear theory: Annual report)

    SciTech Connect

    Iachello, F.; Alhassid, Y.; Kusnezov, D.

    1991-01-01

    This report discusses topics on : nuclear structure models; algebraic models of hadronic structure; nuclear reactions; hot rotating nuclei; chaos in nuclei; signatures of the quark-gluon plasma; hadronic spectroscopy; octupole collectivity in nuclei; finite-temperature methods for the many-body problem; and classical limit of algebraic hamiltonians. (LSP)

  15. 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.

  16. (U) Nuclear Data

    SciTech Connect

    White, Morgan C. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-01-23

    Nuclear data comes from a variety of sources and in many flavors. Understanding where the data you use comes from and what flavor it is can be essential to understand and interpret your results. This talk will discuss the nuclear data pipeline with particular emphasis on providing links to additional resources that can be used to explore the issues you will encounter.

  17. Nuclear Age Education Curriculum.

    ERIC Educational Resources Information Center

    Oregon State Dept. of Education, Salem.

    The primary goal of the Oregon nuclear age education curriculum is to develop in students the knowledge and skills needed to meet the challenges of living in a nuclear age. This curriculum is developed around five general themes, each corresponding to a specific unit. The general goals for the units are: (Unit 1) to increase students' exposure to…

  18. 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

  19. Homemade nuclear bomb syndrome

    Microsoft Academic Search

    W. Meyer; S. K. Loyalka; W. E. Nelson; R. W. Williams

    1977-01-01

    With the publication of Nuclear Theft: Risks and Safeguards by Willrich and Taylor, significant attention has been focused by the media and the public on the possibility of fissile materials being stolen by a terrorist organization and diverted to the actual building, or the threat of building, of a nuclear explosive device. The implication has been created that one or

  20. Quartetting in Nuclear Matter

    E-print Network

    Peter Schuck; Takaaki Sogo; Gerd Röpke

    2012-06-20

    A general theory for the condensation of strongly bound quartets in infinite nuclear matter is presented. Critical temperatures for symmetric and asymmetric nuclear matter are evaluated. A fully nonlinear theory for the quartet order parameter, based on an analogy of the Gorkov approach to pairing, is presented and solved. The strong qualitative difference with pairing is pointed out.

  1. PROPERTIES OF NUCLEAR MATTER

    Microsoft Academic Search

    Weisskopf; J. D. Walecka; V. F. Weisskopf

    1958-01-01

    An account is given of recent theories by Brueckner, Eden, Swiatecki, ; Bethe, and co-workers about the properties of nuclear matter, which is identical ; in content, but different in its method of presentation. This presentation tries ; to clarify the reasons for the applicability of the independent-particle model ; and to determine what particular features of the nuclear forces

  2. Nuclear–mitochondrial interaction

    Microsoft Academic Search

    G. Cannino; C. M. Di Liegro; A. M. Rinaldi

    2007-01-01

    The biogenesis of mitochondria depends on the coordinated expression of nuclear and mitochondrial genomes. Consequently, the control of mitochondrial biogenesis and function depends on extremely complex processes requiring a variety of well orchestrated regulatory mechanisms. It is clear that the interplay of transcription factors and coactivators contributes to the expression of both nuclear and mitochondrial respiratory genes. In addition, the

  3. Nuclear Medicine CT Angiography

    E-print Network

    Ford, James

    rotation is based at the Palo Alto VA Medical Center and gives the cardiology fellow experience. 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

  4. 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…

  5. Physics of Nuclear Antishadowing

    E-print Network

    Ivan Schmidt

    2005-11-14

    Shadowing and antishadowing of the electromagnetic nuclear structure functions are produced by the coherence of multiscattering quark nuclear processes. This picture leads to substantially different antishadowing for charged and neutral current processes, particularly in anti-neutrino reactions, thus affecting the extraction of the weak-mixing angle $\\sin^2\\theta_W$.

  6. Whither Nuclear Physics ?

    E-print Network

    Syed Afsar Abbas

    2008-01-07

    Nuclear Physics has had its ups and downs. However in recent years, bucked up by some new and often puzzling data, it has become a potentially very rich field. We review some of these exciting developments in a few important sectors of nuclear physics. Emphasis shall be on the study of exotic nuclei and the new physics that these nuclei are teaching us.

  7. United States Nuclear Regulatory

    E-print Network

    United States Nuclear Regulatory Commission United States Department of Energy United States, Energy, in the Code of Federal Regulations may also be purchased from one of these two sources. 1.S. Nuclear Regulatory Commission Washington, DC 20555-0001 E-mail: DISTRIBUTION@nrc.gov Facsimile: 301

  8. 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

  9. 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.

  10. Nuclear Scans (Cancer)

    MedlinePLUS

    ... are the possible complications? For the most part, nuclear scans are safe tests. The doses of radiation are small, and the radionuclides have a low ... else should I know about these tests? The radiation exposure from a nuclear scan comes from the radionuclides used – the scanner ...

  11. Internet and nuclear medicine.

    PubMed

    Nyssen, M

    2001-01-01

    This paper aims in analyzing the effectiveness of the technological impact of internet technology on nuclear medicine. To make this evaluation we will first determine what we consider is the 'internet technology' and then see how the 'production line' in nuclear medicine benefits from this internet technology, putting both side by side. PMID:11137797

  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. 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 ...

  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. Supporting Our Nation's Nuclear Industry

    SciTech Connect

    Lyons, Peter

    2011-01-01

    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.

  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. Traiga su Foto-ID a las urnas

    E-print Network

    Azevedo, Ricardo

    Traiga su Foto-ID a las urnas Texas requiere que votantes presenten una forma aprobada de identificación con foto para votar en persona. Para facilitar el proceso de calificar para votar cuando va a las urnas de votación usted debe: 1.Revisar la lista de Foto-IDs aprobadas y asegúrar que tiene una; 2

  18. 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

  19. 351ENSEANZA DE LAS CIENCIAS, 2001, 19 (3), INVESTIGACIN

    E-print Network

    Campanario, Juan Miguel

    351ENSEÑANZA DE LAS CIENCIAS, 2001, 19 (3), INVESTIGACIÓN DIDÁCTICA ¿QUÉ PUEDE HACER UN PROFESOR CONVENCIONALES CAMPANARIO, JUAN MIGUEL Grupo de Investigación en Aprendizaje de las Ciencias Departamento de realizarse utilizando los libros de texto de ciencias habi- tuales. Con estas actividades y tareas se intenta

  20. LAS IDEAS SOBRE EL HOMBRE EN LA GRECIA ANTIGUA

    Microsoft Academic Search

    JUAN JAVIER SAAVEDRA MAYORGA

    2007-01-01

    Resumen El presente artículo es el primero de una serie de documentos que tienen por objeto identificar el paradigma antropológico sobre el cual se ha construido el pensamiento administrativo, y su impacto en las prácticas administrativas contemporáneas. Para ello se parte de una perspectiva histórica, examinando las distintas concepciones que se han tenido acerca del hombre, y de qué modo

  1. 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

  2. ADVERGAMING APLICADO A LAS ESTRATEGIAS COMUNICATIVAS DIRIGIDAS AL TARGET INFANTIL

    Microsoft Academic Search

    Cristina González Díaz; Teresa Francés Barceló

    1. INTRODUCCIÓN. 1.1. Los nuevos invasores del espacio lúdico infantil: los videojuegos. Los videojuegos, ya sea a través de consolas, ordenador o teléfono móvil, se han consolidado como una de las actividades lúdicas preferidas por los niños que, sin duda, se sienten atraídos por las continúas innovaciones tecnológicas que este tipo de entretenimiento trae consigo. De hecho, según un estudio

  3. Desarrollo costero y conservacin marina en armona con las personas

    E-print Network

    Richner, Heinz

    también explotan los recursos del mar pero que no se preocupan por el desarrollo sostenible. LaDesarrollo costero y conservación marina en armonía con las personas Los debates sobre la conservación marino costera El desarrollo y conservación de las costas de Costa Rica es concebido de formas

  4. 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

  5. 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

  6. 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

  7. Nuclear Density Functional Theory

    SciTech Connect

    Stoitsov, Mario [ORNL

    2010-01-01

    An understanding of atomic nuclei is crucial for a complete nuclear theory, for nuclear astrophysics, for performing new experimental tasks, and for various other applications. Within a density functional theory, the total binding energy of the nucleus is given by a functional of the nuclear density matrices and their derivatives. The variation of the energy density functional with respect to particle and pairing densities leads to the Hartree-Fock-Bogoliubov equations. The "Universal Nuclear Energy Density Functional" (UNEDF) SciDAC project, to develop and optimize the energy density functional for atomic nuclei using state-of-the-art computational infrastructure, is briefly described. The ultimate goal is to replace current phenomenological models of the nucleus with a well-founded microscopic theory with minimal uncertainties, capable of describing nuclear data and extrapolating to unknown regions.

  8. 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.

  9. 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.

  10. 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.

  11. 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.

  12. Neutrino Nuclear Responses for Neutrino Studies in Nuclear Femto Laboratories

    SciTech Connect

    Ejiri, Hiroyasu [Research Center for Nuclear Physics, Osaka University, Osaka 567-0047 (Japan); Nuclear Science, Czech Technical University, Brehova, Prague (Czech Republic)

    2010-11-24

    Fundamental properties of neutrinos and neutrino nuclear interactions are of great interest from particle and astro-nuclear physics view points. They are well studied in nuclear femto laboratories, where neutrino nuclear responses are crucial. Neutrino masses and neutrino natures are studied by neutrino-less double beta decays (0{nu}{beta}{beta}) in nuclei. Here neutrino nuclear responses are required to extract neutrino properties from 0{nu}{beta}{beta} rates. Neutrino nuclear responses are sensitive to nuclear spin isospin correlations and nuclear structures. They are experimentally studied by nuclear probes for charge exchange nuclear reactions, photon EM probes for photo-nuclear reactions, and lepton probes for muon and neutrino capture reactions.

  13. 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.

  14. Nuclear fission sustainability with hybrid nuclear cycles

    Microsoft Academic Search

    José M. Martínez-Val; Mireia Piera

    2007-01-01

    An analysis is presented on the main requirements to develop nuclear fission in the context of social, economic and environmental sustainability. This analysis is mainly focused on maximizing the energy actually generated from the potential contents of fissionable natural resources. The role of fertile to fissile breeding is highlighted, as well as the need of attaining a very high safety

  15. Nuclear modeling techniques and nuclear data

    Microsoft Academic Search

    P. D. Soran

    1988-01-01

    The current state-of-particle transport computer codes and associated nuclear data bases permit the accurate simulation of downhole sensor packages. Mathematical modeling can minimize design and experiment time, as well as provide new information on sensor design, environmental effects, and interpretation questions. Monte Carlo techniques can provide energy, time, and spatial information to permit signal partitioning and sensitivity analysis in complex

  16. Las propiedades de las estrellas extrañas en el marco de una nueva ecuación de estado para la materia extraña

    NASA Astrophysics Data System (ADS)

    Lugones, G.; Benvenuto, O. G.

    Se estudian las propiedades generales de las estrellas constituídas por materia extraña (ME) en el marco de una nueva ecuación de estado (EOS) en la que consideramos la masa de los quarks como dependiente del número medio de bariones por unidad de volumen. Se asume esta dependencia de forma que los quarks sean livianos (pesados) a densidades altas (bajas). En esta aproximación, la EOS de la ME es similar a la predicha por el modelo de la Bolsa del MIT, pero es significativamente mas dura a bajas densidades. Esta propiedad modifica las propiedades de las estrellas extrañas en forma notable. Encontramos que, con esta nueva EOS, los objetos pueden ser más masivos que en el caso de la EOS de la bolsa del MIT y que, además, pueden presentar mayores redshifts gravitatorios en hasta un 10%. En el caso de las oscilaciones radiales de estos objetos, calculamos la relación período vs. redshift gravitacional y encontramos una expresión analítica simple para el caso de las oscilaciones de objetos de baja masa. Encontramos que, aún con hipótesis muy diferentes en cuanto a la ecuación de estado de la materia extraña, las propiedades generales de estos objetos no se ve afectada en forma fundamental, y, por lo tanto, no deberían ser muy diferentes de las aquí expuestas.

  17. Seismic design strategy for surface facilities at the prospective Yucca Mountain nuclear waste repository

    Microsoft Academic Search

    C. L. Wu; C. V. Subramanian

    1987-01-01

    The site of the prospective Yucca Mountain nuclear waste repository is in Nye County, Nevada, approx. 85 miles northwest of Las Vegas. The site is located on federal land that is under the control of the US Dept. of Energy (DOE), the US Air Force, and the Bureau of Land Management. The repository complex will be composed of surface and

  18. 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 ...

  19. 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...

  20. 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.

  1. Perspectives of Nuclear Physics

    E-print Network

    Amand Faessler

    2002-12-06

    The organizers of this meeting have asked me to present perspectives of nuclear physics. This means to identify the areas where nuclear physics will be expanding in the next future. In six chapters a short overview of these areas will be given, where I expect that nuclear physics willdevelop quite fast: A. Quantum Chromodynamics and effective field theories in the confinement region; B. Nuclear structure at the limits; C. High energy heavy ion collisions; D. Nuclear astrophysics; E. Neutrino physics; F. Test of physics beyond the standard model by rare processes. After a survey over these six points I will pick out a few topics where I will go more in details. There is no time to give for all six points detailed examples. I shall discuss the following examples of the six topics mentionned above: 1. The perturbative chiral quark model and the nucleon $\\Sigma$-term, 2. VAMPIR (Variation After Mean field Projection In Realistic model spaces and with realistic forces) as an example of the nuclear structure renaissance, 3. Measurement of important astrophysical nuclear reactions in the Gamow peak, 4. The solar neutrino problem. As examples for testing new physics beyond the standard model by rare processes I had prepared to speak about the measurement of the electric neutron dipole moment and of the neutrinoless double beta decay. But the time is limited and so I have to skip these points, although they are extremely interesting.

  2. 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

  3. 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.

  4. 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.

  5. 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…

  6. 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…

  7. 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…

  8. 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

  9. Nuclear power after Chernobyl.

    PubMed

    Ahearne, J F

    1987-05-01

    The causes and progress of the accident at Chernobyl are described, and a comparison between the Chernobyl accident and the 1979 accident at the Three Mile Island nuclear power station is made. Significant similarities between Chernobyl and Three Mile Island include complacency of operators and industry, deliberate negation of safety systems, and a lack of understanding of their plant on the part of the operators, which shows the critical importance of the human element. The Chernobyl accident has implications for nuclear power in the United States; it will affect the research program of the Nuclear Regulatory Commission, regulation of Department of Energy reactors, new reactor designs, and public attitudes. PMID:3576192

  10. 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.

  11. The Nuclear Envelope

    PubMed Central

    Hetzer, Martin W.

    2010-01-01

    The nuclear envelope (NE) is a highly regulated membrane barrier that separates the nucleus from the cytoplasm in eukaryotic cells. It contains a large number of different proteins that have been implicated in chromatin organization and gene regulation. Although the nuclear membrane enables complex levels of gene expression, it also poses a challenge when it comes to cell division. To allow access of the mitotic spindle to chromatin, the nucleus of metazoans must completely disassemble during mitosis, generating the need to re-establish the nuclear compartment at the end of each cell division. Here, I summarize our current understanding of the dynamic remodeling of the NE during the cell cycle. PMID:20300205

  12. Yeast nuclear RNA processing

    PubMed Central

    Bernstein, Jade; Toth, Eric A

    2012-01-01

    Nuclear RNA processing requires dynamic and intricately regulated machinery composed of multiple enzymes and their cofactors. In this review, we summarize recent experiments using Saccharomyces cerevisiae as a model system that have yielded important insights regarding the conversion of pre-RNAs to functional RNAs, and the elimination of aberrant RNAs and unneeded intermediates from the nuclear RNA pool. Much progress has been made recently in describing the 3D structure of many elements of the nuclear degradation machinery and its cofactors. Similarly, the regulatory mechanisms that govern RNA processing are gradually coming into focus. Such advances invariably generate many new questions, which we highlight in this review. PMID:22312453

  13. Nuclear power after Chernobyl

    SciTech Connect

    Ahearne, J.F.

    1987-05-08

    The causes and progress of the accident at Chernobyl are described, and a comparison between the Chernobyl accident and the 1979 accident at the Three Mile Island nuclear power station is made. Significant similarities between Chernobyl and Three Mile Island include complacency of operators and industry, deliberate negation of safety systems, and a lack of understanding of their plant on the part of the operators, which shows the critical importance of the human element. The Chernobyl accident has implications for nuclear power in the United States; it will affect the research program of the Nuclear Regulatory Commission, regulation of Department of Energy reactors, new reactor designs, and public attitudes.

  14. Theoretical nuclear physics

    SciTech Connect

    French, J.B.; Koltun, D.S.

    1992-06-01

    This report summarizes progress during the past year in the following areas of research: Pion double charge exchange and the role of meson exchange currents, including vector mesons, deltas, and nuclear correlations. K{sup +}-nucleus scattering and the role of meson exchange currents in supplying missing cross section.'' Pion excess distributions in nuclei, and the role of nuclear correlations. Interactions of two hyperons and the possibility of an H dibaryon. Shell model spectra and the NN tensor interaction. Statistical nuclear spectroscopy, including state densities and expectation values evaluated in terms of one-point and two-point (correlation) functions.

  15. 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.

  16. 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.

  17. 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

  18. Safety of the Las Vegas left-turn display.

    PubMed

    Ozmen, Ozlem; Tian, Zong Z; Gibby, A Reed

    2014-01-01

    This paper provides a safety evaluation of a special protected/permitted left turn signal control (Las Vegas LT Display) that has been implemented in the urbanized area of Las Vegas, Nevada. The Las Vegas LT Display eliminates the yellow trap condition for leading approach in lead/lag operation. It provides protected only left turns during certain times of day by suppressing the permitted green ball and yellow ball displays. Before and after studies were conducted using the crash data from 10 intersections. Results from the analyses indicated that no obvious safety concerns due to use of the special display. PMID:24144494

  19. Analysis of Nuclear Reconstitution, Nuclear Envelope Assembly, and Nuclear Pore Assembly Using Xenopus In Vitro Assays

    PubMed Central

    Bernis, Cyril; Forbes, Douglass J.

    2015-01-01

    The large and complex eukaryotic nucleus is the arbiter of DNA replication, RNA transcription, splicing, and ribosome assembly. With the advent of in vitro nuclear reconstitution extracts derived from Xenopus eggs in the 1980s, it became possible to assemble multiple nuclei in vitro around added DNA or chromatin substrates. Such reconstituted nuclei contain a nuclear lamina, double nuclear membranes, nuclear pores, and are competent for DNA replication and nuclear import. In vitro nuclear reconstitution has allowed the assembly of “wild-type” and “biochemically mutant” nuclei in which the impact of individual components can be assessed. Here, we describe protocols for preparation of the nuclear reconstitution extract, nuclear reconstitution in vitro, assessment of nuclear membrane integrity, and a more specialized assay for nuclear pore assembly into preformed pore-free nuclear intermediates. PMID:24857730

  20. 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.

  1. BIBLIOTECA DELLA SCIENZA E DELLA TECNICA CARTA DEI SERVIZI

    E-print Network

    Segatti, Antonio

    , Dipartimento di Scienze della Terra, Dipartimento di Genetica e Microbiologia, Dipartimento di Ecologia del Terra Dipartimento di Genetica e Microbiologia Dipartimento di Ecologia del Territorio Le richieste di - Pavia · sezione di Genetica e Microbiologia : Via Ferrata, 1 - Pavia · sezione di Ecologia del

  2. UNIVERSIDAD DE GRANADA Escuela Tecnica Superior de Ingenieria Informatica

    E-print Network

    Granada, Universidad de

    Ciencias de la Computaci´on e Inteligencia Artificial SISTEMAS DE ACCESO A LA INFORMACI´ON BASADOS EN Computaci´on e Inteligencia Artificial SISTEMAS DE ACCESO A LA INFORMACI´ON BASADOS EN INFORMACI´ON LING todos los miembros del grupo de investigaci´on Soft Computing y Sistemas de Informaci´on Inteligentes

  3. FAQs: Japan Nuclear Concerns

    MedlinePLUS

    ... early actions in response to events at the Fukushima Daiichi nuclear power plant were in line with ... living within a 20-kilometre radius around the Fukushima Daiichi plant. Those living between 20 km and ...

  4. 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.

  5. 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.

  6. 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.

  7. Nuclear Weapons Latency 

    E-print Network

    Sweeney, David J

    2014-07-25

    , demonstrates how Nuclear Weapons Latency can help characterize the proliferation risk of different policy options for decision makers. Analysis showed that development of any one of pyroprocessing, PUREX, or especially commercial uranium enrichment technologies...

  8. Cancer near nuclear installations

    Microsoft Academic Search

    David Forman; Paula Cook-Mozaffari; Sarah Darby; Gwyneth Davey; Irene Stratton; Richard Doll; Malcolm Pike

    1987-01-01

    There has been no general increase in cancer mortality near nuclear installations in England and Wales during the period 1959-1980. Leukaemia in young people may be an exception, though the reason remains unclear.

  9. 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.

  10. Reactor- Nuclear Science Center 

    E-print Network

    Unknown

    2011-08-17

    infusion for two weeks. In the nicotine-treated group, we found an increase in the proliferation of cholangiocytes identified by cytokeratin (CK-19, a cholangiocyte specific marker) staining, and proliferating cell nuclear antigen (PCNA) expression...

  11. Nuclear Science Center - 4 

    E-print Network

    Unknown

    2009-01-01

    How does the American public assess risk when it comes to national security issues? This paper addresses this question by analyzing variation in citizen probability assessments of the terrorism risk of nuclear power plants. Drawing on the literature...

  12. 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

  13. 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)

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. Nuclear Quenching in Gaseous Argon

    Microsoft Academic Search

    Kareem Kazkaz; Adam Bernstein; Michael Foxe; Christian Hagmann; Igor Jovanovic; Wolfgang Stoeffl; Celeste Winant

    2008-01-01

    In many media and with varying degrees of efficiency, nuclear recoils can induce ionization and\\/or scintillation. These nuclear recoil signatures can be used in dark matter searches and neutrino physics experiments, and to detect neutrons. To understand the behavior of the ionization process induced by nuclear recoils, nuclear quenching factors must be measured at various energies to properly reconstruct the

  19. Nuclear power: the fifth horseman

    Microsoft Academic Search

    1976-01-01

    ''Nuclear Power: The Fifth Horseman,'' is published in an attempt to identify and analyze emerging global trends and problems. This paper evaluates the future of nuclear power, subjecting it to several tests--those of economics, safety, adequacy of fuel supplies, environmental impact, and both national and international security. If the world is to ''go nuclear,'' adopting nuclear power as the principal

  20. Nuclear Astrophysics Data Dissemination & Coordination

    Microsoft Academic Search

    Michael Smith; Richard A. Meyer

    Progress in solving many puzzles in astrophysics hinges on the availability of crucial nuclear datasets. Dedicated effort is required to rapidly provide usable, accurate, and significant amounts of nuclear data for astrophysical studies. While substantial attention has recently been paid to the need for increased evaluation activities to meet the nuclear data needs of the nuclear astrophysics research community, it

  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. The North Korean nuclear dilemma

    Microsoft Academic Search

    Hecker; Siegfried S

    2004-01-01

    The current nuclear crisis, the second one in ten years, erupted when North Korea expelled international nuclear inspectors in December 2002, then withdrew from the Nuclear Nonproliferation Treaty (NPT), and claimed to be building more nuclear weapons with the plutonium extracted from the spent fuel rods heretofore stored under international inspection. These actions were triggered by a disagreement over U.S.

  3. FACULTY OPENINGS IN NUCLEAR ENGINEERING

    E-print Network

    computing and experimental facilities, including the 1 MW Breazeale Nuclear Reactor at the Radiation ScienceFACULTY OPENINGS IN NUCLEAR ENGINEERING The Department of Mechanical and Nuclear Engineering will have expertise in one of the specialty areas of nuclear engineering and (ii) a search in which

  4. 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)

  5. Nuclear Energy Research Brookhaven National

    E-print Network

    Ohta, Shigemi

    Nuclear 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&T Department #12;Nuclear Energy Today 435 Operable Power Reactors, 12% electrical generation (100 in US, 19

  6. UNISOR Nuclear Orientation Facility

    SciTech Connect

    Girit, I.C.

    1988-01-01

    The combination of an on-line isotope separator and a dilution refrigerator has increased the applicability of the nuclear orientation technique to a wide range of nuclei, especially those very far from stability. The UNISOR Nuclear Orientation Facility (UNISOR/NOF) is among the two (the other being NICOLE at CERN) that have recently become operational. The following is an overall view of the UNISOR system and recent results. 24 refs., 3 figs.

  7. Table of Nuclear Moments

    Microsoft Academic Search

    P. Raghavan

    1989-01-01

    This table is a compilation of experimental data on static nuclear magnetic dipole ane electric quadrupole moments for ground state and excited states of nuclides from ¹H to ²⁵⁴Es. Listed along with the moments are the associated excitation energy, half-life, spin, and parity of the nuclear state, and the experimental method employed. The literature has been surveyed through early 1988.

  8. 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.

  9. 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.

  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. 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://system.nevada.edu/Board-of-R/Handbook/TITLE-4---/T4-CH10---General- Business-Managemen.pdf University of Nevada, Las Vegas Research Policies

  12. PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [University of Nevada, Las Vegas, Libraries

    E-print Network

    Ahmad, Sajjad

    PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [University of Nevada, Las Vegas of Life Sciences, University of Nevada Las Vegas, Las Vegas, Nevada, USA c Department of Microbiology Las Vegas, Las Vegas, Nevada 89154, USA Juergen Wiegel Department of Microbiology, University

  13. 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 ...

  14. LISTADO DE LAS ESPORAS DE HONGOS IMPERFECTOS INGERIDAS

    E-print Network

    Mari-Mutt, José A.

    que las demas. De cada Iocalidad se extrajeron algunos colembolos con alimento en el tubo digesti- v o dispersadas por el aire y la Iluvia. El genero es comun como saprofito en hojaras- ca, residuos organicos y en

  15. 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.

  16. Nucleon Properties in Nuclear Matter

    NASA Astrophysics Data System (ADS)

    Yakhshiev, Ulugbek; Kim, Hyun-Chul

    2011-10-01

    We present recent studies on the effective mass of the nucleon in infinite and homogeneous nuclear matter and its relation to nuclear matter properties within the framework of the in-medium modified Skyrme model. Medium modifications are achieved by introducing optical potential for pion fields and parametrization of the Skyrme parameter in nuclear medium. The present approach is phenomenologically well justified by pion physics in nuclear matter and describe successfully bulk nuclear matter properties.

  17. Thermal expansion in metal\\/lithia-alumina-silica (LAS) composites

    Microsoft Academic Search

    E. G. Wolff

    1988-01-01

    Lithia-alumina-silica (LAS) with metallic dispersions offers a new approach toward near-zero, isotropic, thermal expansion composites. The metallic phase contributes a positive coefficient of thermal expansion (CTE) to the negative CTE of the glass\\/ceramic matrix. In addition, the metal will increase the electrical and thermal conductivities over those of the matrix alone. The LAS system offers tailorable negative CTEs and light

  18. Model Action Plan for Nuclear Forensics and Nuclear Attribution

    SciTech Connect

    Dudder, G B; Niemeyer, S; Smith, D K; Kristo, M J

    2004-03-01

    Nuclear forensics and nuclear attribution have become increasingly important tools in the fight against illegal trafficking in nuclear and radiological materials. This technical report documents the field of nuclear forensics and nuclear attribution in a comprehensive manner, summarizing tools and procedures that have heretofore been described independently in the scientific literature. This report also provides national policy-makers, decision-makers, and technical managers with guidance for responding to incidents involving the interdiction of nuclear and radiological materials. However, due to the significant capital costs of the equipment and the specialized expertise of the personnel, work in the field of nuclear forensics has been restricted so far to a handful of national and international laboratories. In fact, there are a limited number of specialists who have experience working with interdicted nuclear materials and affiliated evidence. Most of the laboratories that have the requisite equipment, personnel, and experience to perform nuclear forensic analysis are participants in the Nuclear Smuggling International Technical Working Group or ITWG (see Section 1.8). Consequently, there is a need to disseminate information on an appropriate response to incidents of nuclear smuggling, including a comprehensive approach to gathering evidence that meets appropriate legal standards and to developing insights into the source and routes of nuclear and radiological contraband. Appendix A presents a ''Menu of Options'' for other Member States to request assistance from the ITWG Nuclear Forensics Laboratories (INFL) on nuclear forensic cases.

  19. PROPUESTA DE TURISMO RURAL A TRAVÉS DE UNA ESTRATEGIA DE COMUNICACIÒN Y MERCADEO PARA EL PRODUCTO GASTRONÒMICO Y TURÍSTICO “LAS TRUCHAS”, EN LA RUTA DE LAS TRUCHAS EN BAMBITO, PROVINCIA DE CHIRIQUÌ, PANAMÀ

    Microsoft Academic Search

    Hipólito Solís

    2009-01-01

    Las actividades de producción en los espacios rurales se han desmejorado por múltiples factores, las fincas ya no producen lo suficiente para que las familias cubran sus gastos. El advenimiento de la denominada industria sin chimeneas (turismo), ha dinamizado las actividades económicas no solo en las grandes ciudades, en las zonas costeras de playa sino también en las zonas de

  20. Nuclear medicine data communications.

    PubMed

    Honeyman, J C

    1998-04-01

    Nuclear Medicine was one of the earliest imaging modalities to adopt the use of computers for acquisition, processing, storage, and display of digital images. Originally used for processing images, computer technologies were quickly adopted for image storage, display, and transmission. Modern nuclear medicine cameras produce digital images that can be transmitted over computer networks to other cameras, storage devices, workstations, and printers. In order to achieve nuclear medicine data communication, images must be successfully acquired and transmitted to the appropriate location to be displayed or printed. Standards have been developed over the years to facilitate the creation of interfaces between vendors and equipment, notably the interfile format for nuclear medicine and the DICOM standard for medical images. Studies can be transmitted over network communication links to other sites using telecommunication protocol standards where they can be stored and/or displayed on a wide variety of devices. This ability to move images in a well-understood format to general purpose devices using standard equipment enables the use of the Internet to disseminate nuclear medicine study information over a wide area for clinical use, research, and education. A number of universities have created Internet sites with nuclear medicine teaching files and information. As technology advances, it will be feasible to transmit medical images of all kinds to virtually anyone who needs them in near real-time, without regard to the distance between locations, or the types of instrumentation and computers used. The next few years should prove to be very interesting for digital medical imaging in general and nuclear medicine in particular. PMID:9579417

  1. ¿Por que los niños abandonan la escuela? Determinantes de la desercion estudiantil en los colegios oficiales de Cartagena de Indias

    Microsoft Academic Search

    Jorge Alvis; William Arellano

    2009-01-01

    El estudio analiza los factores asociados a la desercion escolar en el distrito de Cartagena y dos estudios de caso correspondientes a las instituciones educativas San Felipe Neri y Tecnica Agropecuaria La Boquilla. Se incluyen variables de análisis relacionadas con las caracteristicas individuales, socioeconomicas, academicas e institucionales de los estudiantes matriculados en el sector oficial como determinantes de esta situación.

  2. ACTIVIDADES FSICAS MENSUALES Las actividades se desarrollarn dentro del horario de apertura de las instalaciones , y de acuerdo con

    E-print Network

    Escolano, Francisco

    MULTIBAILE Asiste, indistintamente, a las clases de Bailes Latinos y de Salón, Hip Hop y Zumba. Disfruta de 3 MANTENIMIENTO M y J 15:00 - 16:00 Marina Díaz 21,5 * 25 * HIP HOP L y X 19:00 - 20:00 Marina Díaz 21,5 ** 25 de las 3 actividades citadas. ** La inscripción trimestral en Bailes Latinos y de Salón, Hip Hop o

  3. Mecanismos de fabulación y mitificación de la historia en las 'Comedias impolíticas' y las Coronas de Rodolfo Usigli

    E-print Network

    Layera, Ramó n

    1985-04-01

    dramática.2 Las ideas de White que me han servido para examinar los textos usiglianos son solamente unidades menores dentro de un esquema teórico más amplio. De su teoría de los tropos he aprovechado solamente sus conceptos de metáfora y de ironía. De... desarrolla una teoría interpretativa del discurso histórico que le permite señalar, a un nivel estrictamente lingüístico, las estrategias narrativas, arguméntales e ideológicas que definen y marcan el estilo especí fico de la imaginación histórica de un...

  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. Nuclear concepts/propulsion

    NASA Technical Reports Server (NTRS)

    Miller, Thomas J.

    1993-01-01

    Nuclear thermal and nuclear electric propulsion systems will enable and/or enhance important space exploration missions to the moon and Mars. Current efforts are addressing certain research areas, although NASA and DOE still have much work yet to do. Relative to chemical systems, nuclear thermal propulsion offers the potential of reduced vehicle weight, wider launch windows. and shorter transit times, even without aerobrakes. This would improve crew safety by reducing their exposure to cosmic radiation. Advanced materials and structures will be an important resource in responding to the challenges posed by safety and test facility requirements, environmental concerns, high temperature fuels and the high radiation, hot hydrogen environment within nuclear thermal propulsion systems. Nuclear electric propulsion (NEP) has its own distinct set of advantages relative to chemical systems. These include low resupply mass, the availability of large amounts of onboard electric power for other uses besides propulsion, improved launch windows, and the ability to share technology with surface power systems. Development efforts for NEP reactors will emphasize long life operation of compact designs. This will require designs that provide high fuel burnup and high temperature operation along with personnel and environmental safety.

  6. Nuclear pumped laser II

    NASA Technical Reports Server (NTRS)

    Deyoung, R. J.; Lee, J. H.; Pinkston, W. T.

    1977-01-01

    The first direct nuclear pumped laser using the He-2-(n,p) H-3 reaction is reported. Lasing took place on the 1.79 microns Ar I transition in a mixture of He-3-Ar at approximately 600 Torr total pressure. It was found that the electrically pulsed afterglow He-Ar laser had the same concentration profile as the nuclear pumped laser. As a result, nuclear lasing was also achieved in He-3-Xe (2.027 micron) and He-3-Kr (2.52 micron). Scaling of laser output with both thermal flux and total pressure as well as minority concentration has been completed. A peak output (He-3-Ar) of 3.7 watts has been achieved at a total pressure of 4 atm. Direct nuclear pumping of He-3-Ne has also been achieved. Nuclear pumping of a He-3-NF3 mixture was attempted, lasing in FI at approximately 7000 A, without success, although the potential lasing transitions appeared in spontaneous emission. Both NF3 and 238UF6 appear to quench spontaneous emission when they constitute more than 1% of the gas mixture.

  7. 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.

  8. Nuclear transfer in ruminants.

    PubMed

    Lee, Joon-Hee; Maalouf, Walid E

    2015-01-01

    Ruminants were the first mammalian species to be cloned successfully by nuclear transplantation. Those experiments were designed to multiply high merit animals (Willadsen, Nature 320(6057):63-65, 1986; Prather et al., Biol Reprod 37(4):859-866, 1987; Wilmut et al., Nature 385(6619):810-813, 1997). Since then, cloning has provided us with a vast amount of knowledge and information on the reprogramming ability of somatic cells to different cell types which became an important basis for stem cell research and human medicine. Nowadays, the goals of most nuclear transfer work vary widely but in most cases the micromanipulation procedures remain the same. However, differences between species require different technical considerations. In this chapter, we describe in detail somatic cell nuclear transfer which is the foremost method for cloning ruminants with specific reference to sheep and cattle. PMID:25287336

  9. Shoreham Nuclear Power Plant

    SciTech Connect

    NONE

    1992-12-31

    The United States Supreme Court, with PG&E and Silkwood, and in the eight years since, has expanded the acceptable extent of state regulation of commercial nuclear power plants. In PG&E, the Court established the acceptability of state regulation that purports to be concerned with the non-radiological aspects of nuclear plant operations but that, as a practical matter, is concerned with their radiological hazards. In Silkwood, the Court established the acceptability of state regulation of radiological hazards when its impact on federal regulation of radiological hazards is indirect and incidental. Finally, in Goodyear and English, the Court confirmed and elaborated on such state regulation. Subject to political demands either for additional involvement in commercial nuclear power plant regulation or from political interests opposed altogether to nuclear power, some states, in the 1980s, sought to expand even further the involvement of state and local governments in nuclear plant regulation. Indeed, some states sought and in some instances acquired, through innovative and extraordinary means, a degree of involvement in the regulation of radiological hazards that seriously erodes and undermines the role of the federal government in such regulation. In particular, the State of New York concluded with the Long Island Lighting Company (LILCO), in February 1989, an agreement for the purchase of New York of the Shoreham nuclear power plant on Long Island. A response to failed efforts by New York to prevent the issuance by the NRC of a license to LILCO to operate the plant, the agreement was concluded to allow New York to close the plant either altogether or to convert it to a fossil fuel facility. The opposition to the sale of Shoreham is discussed.

  10. Fast neutron nuclear reactor

    SciTech Connect

    Cabrillat, M. Th.; Lions, N.

    1985-01-08

    The invention relates to a fast neutron nuclear reactor of the integrated type comprising a cylindrical inner vessel. The inner vessel comprises two concentric ferrules and the connection between the hot collector defined within this vessel and the inlet port of the exchangers is brought about by a hot structure forming a heat baffle and supported by the inner ferrule and by a cold structure surrounding the hot structure, supported by the outer ferrule and sealingly connected to the exchanger. Application to the generation of electric power in nuclear power stations.

  11. Nuclear War Survival Skills

    SciTech Connect

    Kearny, C.H.

    2002-06-24

    The purpose of this book is to provide Americans with information and instructions that will significantly increase their chances of surviving a possible nuclear attack. It brings together field-tested instructions that, if followed by a large fraction of Americans during a crisis that preceded an attack, could save millions of lives. The author is convinced that the vulnerability of our country to nuclear threat or attack must be reduced and that the wide dissemination of the information contained in this book would help achieve that objective of our overall defense strategy.

  12. Nuclear propulsion systems engineering

    NASA Astrophysics Data System (ADS)

    Madsen, W. W.; Neuman, J. E.; Vanhaften, D. H.

    1992-10-01

    The Nuclear Energy for Rocket Vehicle Application (NERVA) program of the 1960's and early 1970's was dramatically successful, with no major failures during the entire testing program. This success was due in large part to the successful development of a systems engineering process. Systems engineering, properly implemented, involves all aspects of the system design and operation, and leads to optimization of the entire system: cost, schedule, performance, safety, reliability, function, requirements, etc. The process must be incorporated from the very first and continued to project completion. This paper will discuss major aspects of the NERVA systems engineering effort and consider the implications for current nuclear propulsion efforts.

  13. 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.

  14. 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.

  15. 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.

  16. Friction in nuclear dynamics

    SciTech Connect

    Swiatecki, W.J.

    1985-03-01

    The problem of dissipation in nuclear dynamics is related to the breaking down of nuclear symmetries and the transition from ordered to chaotic nucleonic motions. In the two extreme idealizations of the perfectly Ordered Regime and the fully Chaotic Regime, the nucleus should behave as an elastic solid or an overdamped fluid, respectively. In the intermediate regime a complicated visco-elastic behaviour is expected. The discussion is illustrated by a simple estimate of the frequency of the giant quadrupole resonance in the Ordered Regime and by applications of the wall and window dissipation formulae in the Chaotic Regime. 51 refs.

  17. 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

  18. 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.

  19. 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.

  20. Economics and nuclear weapons nonproliferation in nuclear power development scenarios

    Microsoft Academic Search

    A. N. Rumyantsev

    2007-01-01

    The method of quantile estimates of uncertainties is used to forecast the economic indices of objects of nuclear power and\\u000a to analyze the uncertainties of the predicted estimates of the balance of nuclear materials and the most likely scenarios\\u000a of nuclear weapons proliferation taking account of the salient aspects of the initial nuclear materials. It is shown that\\u000a methods of

  1. Towards sustainable nuclear energy: Putting nuclear physics to work

    Microsoft Academic Search

    A. J. Koning; D. Rochman

    2008-01-01

    We have developed a new method to propagate the uncertainties of fundamental nuclear physics models and parameters to the design and performance parameters of future, clean nuclear energy systems. Using Monte Carlo simulation, it is for the first time possible to couple these two fields at the extremes of nuclear science without any loss of information in between. With the

  2. Frontiers in nuclear medicine symposium: Nuclear medicine & molecular biology

    SciTech Connect

    NONE

    1995-04-01

    This document contains the abstracts from the American College of Nuclear Physicians 1993 Fall Meeting entitled, `Frontiers in Nuclear Medicine Symposium: Nuclear Medicine and Molecular Biology`. This meeting was sponsored by the US DOE, Office of Health and Environmental Research, Office of Energy Research. The program chairman was Richard C. Reba, M.D.

  3. 77 FR 35080 - Entergy Nuclear Operations, Inc., Pilgrim Nuclear Power Station; Record of Decision and Issuance...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-12

    ...Nuclear Operations, Inc., Pilgrim Nuclear Power Station; Record of Decision and...the operator of the Pilgrim Nuclear Power Station (PNPS). Renewed facility...Nuclear Plants Regarding Pilgrim Nuclear Power Station,'' dated July...

  4. 78 FR 50458 - Entergy Nuclear Operations, Inc., James A. Fitzpatrick Nuclear Power Plant, Vermont Yankee...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ...NRC-2013-0192] Entergy Nuclear Operations, Inc., James A. Fitzpatrick Nuclear Power Plant, Vermont Yankee Nuclear Power Station, Pilgrim Nuclear Power Station, Request for Action AGENCY: Nuclear Regulatory Commission. ACTION:...

  5. Nuclear Energy RenaissanceNuclear Energy Renaissance National Research Council andNational Research Council and

    E-print Network

    Nuclear Energy RenaissanceNuclear Energy Renaissance National Research Council andNational Research ·· Objectives of Nuclear Power RegulationObjectives of Nuclear Power Regulation ·· Major Functions, ANDREGULATIONS, REQUIREMENTS, AND ACCEPTANCE CRITERIAACCEPTANCE CRITERIA ·· LICENSING OF NUCLEAR FACILITIES

  6. Nuclear Structure and Chromosome Evolution

    NSDL National Science Digital Library

    Dr. Lindsay Shopland (The Jackson Laboratory)

    2010-05-19

    Powerpoint slides for two classes, the first on principles of nuclear structure, and the second on chromosome evolution in the context of nuclear structure, segmental duplications, and other mechanisms that permit chromosome evolution.

  7. A Career in Nuclear Energy

    SciTech Connect

    Lambregts, Marsha

    2009-01-01

    Nuclear chemist Dr. Marsha Lambregts talks about the Center for Advanced Energy Studies and the benefits of a nuclear energy career. For more information about careers at INL, visit http://www.facebook.com/idahonationallaboratory.

  8. The Nuclear Debate in Film

    ERIC Educational Resources Information Center

    Dowling, John

    1977-01-01

    Provides a nuclear film bibliography grouped into the areas of: building and using the bomb; living with the bomb; and living with nuclear power. These films are for mature high school students and older. (MLH)

  9. Adventures in scientific nuclear diplomacy

    SciTech Connect

    Hecker, Siegfried S. [Center for International Security and Cooperation, Stanford University, Stanford, California (United States)

    2014-05-09

    A former director of Los Alamos National Laboratory offers a first-person perspective on the important contributions scientists can make toward improving the safety and security of nuclear materials and reducing the global nuclear dangers in an evolving world.

  10. Focus Issue: Mastering Nuclear Dynamics

    NSDL National Science Digital Library

    Nancy R. Gough (American Association for the Advancement of Science; Editor of Science's STKE REV)

    2007-12-04

    Science and Science's STKE delve into the complexity of the nucleus, a dynamic organelle. Along with a rich collection of articles about nuclear regulation, two Perspectives at Science's STKE highlight the nuclear transport of two very different transcriptional regulators.

  11. Psychoanalysis and the nuclear threat

    SciTech Connect

    Levine, H.B.; Jacobs, D.; Rubin, L.J.

    1988-01-01

    {ital Psychoanalysis and the Nuclear Threat} provides coverage of the dynamic and clinical considerations that follow from life in the nuclear age. Of special clinical interest are chapters dealing with the developmental consequences of the nuclear threat in childhood, adolescence, and adulthood, and those exploring the technical issues raised by the occurrence in analytic and psychotherapeutic hours of material related to the nuclear threat. Additional chapters bring a psychoanalytic perspective to bear on such issues as the need to have enemies, silence as the real crime, love, work, and survival in the nuclear age, the relationship of the nuclear threat to issues of mourning and melancholia, apocalyptic fantasies, the paranoid process, considerations of the possible impact of gender on the nuclear threat, and the application of psychoanalytic thinking to nuclear arms strategy. Finally, the volume includes the first case report in the English language---albeit a brief psychotherapy---involving the treatment of a Hiroshima survivor.

  12. Aerial of Nuclear Science Reactor 

    E-print Network

    Unknown

    2011-08-17

    , and has been termed the sorting motif (SM). When abundantly expressed, SM-fusions are also detected in the inner nuclear membrane (INM), outer nuclear membrane and endoplasmic reticulum of infected cells, suggesting proteins with the SM use the same...

  13. Germany Phases Out Nuclear Power

    NSDL National Science Digital Library

    WGBH Educational Foundation

    2012-08-31

    This video excerpt from FRONTLINE: Nuclear Aftershocks explores the debate behind Germany's decision to phase out its nuclear energy program and revert back to coal as “the bridge” that will eventually allow greater reliance on renewable energy.

  14. Nuclear Fuel Cycle; (USA)

    SciTech Connect

    Cason, D.L.; Hicks, S.C. (eds.)

    1991-01-01

    Nuclear Fuel Cycle (NFC) announces on a monthly basis the current worldwide information available from the open literature on all aspects of the fuel cycle except in-reactor properties and performance of fuels. More information related to radioactive waste and to the transport and storage of spent fuel is included in the current awareness publication, Radioactive Waste Management. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database (EDB) during the past month. Also included are other US information obtained through acquisition programs or interagency agreements and international information obtained through the International Energy Agency's Technology Data Exchange, the International Atomic Energy Agency's International Nuclear Information System, or government-to-government agreements. The digests in NFC on nuclear fuel back to 1948 are available for online searching and retrieval in EDB and Nuclear Science Abstracts (NSA) database. Current information, added daily to EDB, 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.

  15. Topics in nuclear power

    NASA Astrophysics Data System (ADS)

    Budnitz, Robert J.

    2015-03-01

    The 101 nuclear plants operating in the US today are far safer than they were 20-30 years ago. For example, there's been about a 100-fold reduction in the occurrence of "significant events" since the late 1970s. Although the youngest of currently operating US plants was designed in the 1970s, all have been significantly modified over the years. Key contributors to the safety gains are a vigilant culture, much improved equipment reliability, greatly improved training of operators and maintenance workers, worldwide sharing of experience, and the effective use of probabilistic risk assessment. Several manufacturers have submitted high quality new designs for large reactors to the U.S. Nuclear Regulatory Commission (NRC) for design approval, and several companies are vigorously working on designs for smaller, modular reactors. Although the Fukushima reactor accident in March 2011 in Japan has been an almost unmitigated disaster for the local population due to their being displaced from their homes and workplaces and also due to the land contamination, its "lessons learned" have been important for the broader nuclear industry, and will surely result in safer nuclear plants worldwide - indeed, have already done so, with more safety improvements to come.

  16. Nuclear War Survival Skills

    Microsoft Academic Search

    Kearny

    2002-01-01

    The purpose of this book is to provide Americans with information and instructions that will significantly increase their chances of surviving a possible nuclear attack. It brings together field-tested instructions that, if followed by a large fraction of Americans during a crisis that preceded an attack, could save millions of lives. The author is convinced that the vulnerability of our

  17. Reflections on nuclear warfare

    Microsoft Academic Search

    J P Evans

    1983-01-01

    The author looks back on his more than 70 years of familiarity with Americans involved in warfare, noting their loyal support for our country's objectives. Drawing on the Einstein equation, his own visits to Hiroshima and Nagasaki, and current literature, he, as a physician, belatedly concurs with those who look on the use of nuclear weapons as irrational and untenable.

  18. Query Nuclear Explosions Database

    NSDL National Science Digital Library

    2002-01-01

    NUCEXP, National Geoscience Database, provided by the Australian Geological Survey Organization (AGSO), contains entries on nuclear explosions around the world since 1945, with the location, time and size of explosions. To view the records, users must select site and country conducting the test and beginning/end dates.

  19. 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…

  20. Space nuclear safety program

    NASA Astrophysics Data System (ADS)

    Bronisz, S. E.

    1984-07-01

    This technical monthly report covers studies related to the use of PuO2(238) in radioisotope power systems carried out for the Office of Special Nuclear Projects of the US Department of Energy by Los Alamos National Laboratory. Most of the studies discussed here are ongoing. Results and conclusions described may change as the work continues.

  1. Politics of nuclear waste

    SciTech Connect

    Colglazier, E.W. Jr. (eds.)

    1982-01-01

    In November of 1979, the Program in Science, Technology and Humanism and the Energy Committee of the Aspen Institute organized a conference on resolving the social, political, and institutional conflicts over the permanent siting of radioactive wastes. This book was written as a result of this conference. The chapters provide a comprehensive and up-to-date overview of the governance issues connected with radioactive waste management as well as a sampling of the diverse views of the interested parties. Chapter 1 looks in depth of radioactive waste management in the United States, with special emphasis on the events of the Carter Administration as well as on the issues with which the Reagen administration must deal. Chapter 2 compares waste management policies and programs among the industralized countries. Chapter 3 examines the factional controversies in the last administration and Congress over nuclear waste issues. Chapter 4 examines the complex legal questions involved in the federal-state conflicts over nuclear waste management. Chapter 5 examines the concept of consultation and concurrence from the perspectives of a host state that is a candidate for a repository and an interested state that has special concerns regarding the demonstration of nuclear waste disposal technology. Chapter 6 examines US and European perspectives concerning public participation in nuclear waste management. Chapter 7 discusses propaganda in the issues. The epilogue attempts to assess the prospects for consensus in the United States on national policies for radioactive waste management. All of the chapter in this book should be interpreted as personal assessments. (DP)

  2. 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.

  3. Space Nuclear Safety Program

    NASA Astrophysics Data System (ADS)

    George, T. G.

    1985-10-01

    This technical monthly report covers studies related to the use of (238) PuO2 in radioisotope power systems carried out for the Office of Special Nuclear Projects of the US Department of Energy by Los Alamos National Laboratory. Covered are: general-purpose heat source testing and recovery, and safety technology program (biaxial testing, iridium chemistry).

  4. Nuclear Lamins and Neurobiology

    PubMed Central

    Jung, Hea-Jin; Lee, John M.

    2014-01-01

    Much of the work on nuclear lamins during the past 15 years has focused on mutations in LMNA (the gene for prelamin A and lamin C) that cause particular muscular dystrophy, cardiomyopathy, partial lipodystrophy, and progeroid syndromes. These disorders, often called “laminopathies,” mainly affect mesenchymal tissues (e.g., striated muscle, bone, and fibrous tissue). Recently, however, a series of papers have identified important roles for nuclear lamins in the central nervous system. Studies of knockout mice uncovered a key role for B-type lamins (lamins B1 and B2) in neuronal migration in the developing brain. Also, duplications of LMNB1 (the gene for lamin B1) have been shown to cause autosome-dominant leukodystrophy. Finally, recent studies have uncovered a peculiar pattern of nuclear lamin expression in the brain. Lamin C transcripts are present at high levels in the brain, but prelamin A expression levels are very low—due to regulation of prelamin A transcripts by microRNA 9. This form of prelamin A regulation likely explains why “prelamin A diseases” such as Hutchinson-Gilford progeria syndrome spare the central nervous system. In this review, we summarize recent progress in elucidating links between nuclear lamins and neurobiology. PMID:24842906

  5. The nuclear fission process

    Microsoft Academic Search

    Wagemans

    1991-01-01

    Fifty years after its discovery, the nuclear fission phenomenon is of recurring interest. When its fundamental physics aspects are considered, fission is viewed in a very positive way, which is reflected in the great interest generated by the meetings and large conferences organized for the 50th anniversary of its discovery. From a purely scientific and practical point of view, a

  6. JPRS report, nuclear developments

    SciTech Connect

    NONE

    1991-03-19

    This report contains articles concerning the nuclear developments of the following countries: (1) China; (2) Japan, North Korea, South Korea, Taiwan; (3) Bulgaria, Czechoslovakia, Yugoslavia; (4) Argentina, Brazil, Panama; (5) India, Iran, Pakistan, Israel, Afghanistan; (6) Soviet Union; (7) France, Germany, Turkey, Belgium, Canada, Netherlands, Switzerland, United Kingdom; and (8) South Africa.

  7. Pulmonary nuclear medicine

    SciTech Connect

    Loken, M.K.

    1987-01-01

    This book contains 19 chapters. Some of the titles are: Pulmonary Nuclear Medicine; Radionuclide Venography as an Adjunct to V-P Imaging in the Assessment of Thromboembolic Disease; Assessment of Mucous Transport in the Respiratory Tract by Radioisotopic Techniques; Radiolabeled Blood Cells and Tracers in the Study of Acute Pulmonary Injury and ARDS; and Magnetic Resonance Imaging of the Lungs.

  8. Nuclear ?-Catenin under Control.

    PubMed

    Fagotto, François

    2015-06-22

    During Wnt stimulation, ?-catenin accumulates in the nucleus, where it regulates gene transcription. In this issue of Developmental Cell, Lu et al. (2015) report a mechanism that specifically targets this nuclear pool for degradation, using lysine demethylation as ubiquitination signal. PMID:26102597

  9. Nuclear excimer concept

    NASA Astrophysics Data System (ADS)

    Borisov, Alex B.; McCorkindale, John C.; Longworth, James W.; Rhodes, Charles K.

    2015-05-01

    Excimer laser technology has played a commanding role in the study of nonlinear electromagnetic phenomenon. Examined herein is the possibility that the excimer concept could be lifted into the nuclear region for the generation of amplification in the gamma-ray range. There exists a fundamental structural/dynamic analogy that supports this possibility.

  10. Nuclear Reactor Safety

    Microsoft Academic Search

    J. D. Bales; R. Boshears

    1996-01-01

    Nuclear Reactor Safety (NRS), published monthly, is a collection of abstracts of worldwide information available on all safety-related aspects of reactors, including accident analysis, safety systems, radiation protection, decommissioning and dismantling, and security measures. 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

  11. 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)

  12. Nuclear Physics with trapped

    E-print Network

    Boas, Harold P.

    Outline · Scope and applications of nuclear physics precision frontier compliments LHC properties and therapeutic medicine · "Cool" tools ­ atom traps probing fundamental symmetries (ion traps) trace analysis The precision frontier probes similar physics compared to colliders; is a complementary and important cross

  13. Second Nuclear Era

    SciTech Connect

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

    1984-03-01

    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 today are much safer than they were at the time of the TMI accident. A number of concepts for a supersafe reactor were reviewed and at least two were found that show considerable promise, the PIUS, a Swedish pressurized water design, and a gas-cooled modular design of German and US origin. Although new, safer, incrementally improved, conventional reactors are under study by the nuclear industry, the complete lack of new orders in the United States will slow their introduction and they are likely to be more expensive than present designs. The study recommends that supersafe reactors be taken seriously and that federal and private funds both be used to design and, if feasible, to build a prototype reactor of substantial size. 146 references, 8 figures, 2 tables.

  14. Somatic cell nuclear transfer

    Microsoft Academic Search

    I. Wilmut; N. Beaujean; P. A. de Sousa; A. Dinnyes; T. J. King; L. A. Paterson; D. N. Wells; L. E. Young

    2002-01-01

    Cloning by nuclear transfer from adult somatic cells is a remarkable demonstration of developmental plasticity. When a nucleus is placed in oocyte cytoplasm, the changes in chromatin structure that govern differentiation can be reversed, and the nucleus can be made to control development to term.

  15. Nuclear reactor decontamination

    Microsoft Academic Search

    Torok

    1981-01-01

    Heat transfer and associated surfaces in nuclear reactors are decontaminated by treating the surface with ozone to oxidize acid -insoluble metal oxides to a more soluble state, removing oxidized solubilized metal oxides, and removing other surface oxides using low concentrations of decontaminating reagents. Ozone treatment has been found very effective with alloys having surface metal oxides rendered more easily dissolved

  16. JPRS report, nuclear developments

    SciTech Connect

    NONE

    1991-01-04

    This report contains articles concerning the nuclear developments of the following countries: (1) China; (2) Japan, North Korea, South Korea; (3) Bulgaria, Czechoslovakia, Rumania; (4) Argentina, Brazil, Peru; (5) India, Iraq, Syria, Israel, Egypt, Mauritania, Pakistan; (6) Soviet Union; (7) France, Germany, Austria, Canada, Italy, Spain; and (8) South Africa.

  17. Nuclear Cluster Physics

    SciTech Connect

    Kamimura, Masayasu [RIKEN Nishina Center, RIKEN, Wako 351-0198 (Japan); Department of Physics, Kyushu University, Fukuoka 812-8581 (Japan)

    2011-05-06

    Predictive power of theory needs good models and accurate calculation methods to solve the Schroedinger equations of the systems concerned. We present some examples of successful predictions based on the nuclear cluster models of light nuclei and hypernuclei and on the calculation methods that have been developed by Kyushu group.

  18. Nuclear Magnetic Resonance Gyroscope

    NASA Astrophysics Data System (ADS)

    Larsen, Michael; Griffith, Robert; Bulatowicz, Michael

    2014-03-01

    The navigation grade micro Nuclear Magnetic Resonance Gyroscope (micro-NMRG) being developed by the Northrop Grumman Corporation (NGC) has concluded 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 presentation will describe the operational principles, design basics, and demonstrated performance of the NMRG including an overview of the NGC designs developed and demonstrated in the DARPA gyro development program.

  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. 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.

  1. 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…

  2. Consequences of nuclear winter

    Microsoft Academic Search

    1987-01-01

    It is to be expected that the predictable consequences of a nuclear war are more terrible than any of the indirect effects that have been discussed. Detailed calculations on the consequences of massive release of smoke seem to bear out this general expectation. This contrast may become ever more obvious if one takes into account the consequences of defense against

  3. Nuclear winter: strategic significance

    Microsoft Academic Search

    2009-01-01

    The author notes that it is too soon to assess what influence the global climatic effects of fires started by a nuclear war should have on targeting policy, weapons acquisition, arms control policy, and other strategic matters. Some aspects of the situation, however, are already clear, and he discusses four of them: (1) if the smoke does produce a serious

  4. 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.

  5. Nuclear cardiograph and scintigraphy

    NASA Technical Reports Server (NTRS)

    Mclaughlin, P.

    1975-01-01

    Extensive advances in the technology of detectors, data analysis systems, and tracers used have resulted in greatly expanded applications of radioisotopes to the assessment of cardiac function and disease. The development of nuclear cardiology has proceeded along four lines: (1) radionuclide angiography, (2) myocardial perfusion imaging, (3) intracoronary microsphere imaging, and (4) regional myocardial blood flow determination using inert gases.

  6. Nuclear medicine case studies

    SciTech Connect

    Wagner, H.N. Jr.

    1986-01-01

    This text presents case studies in nuclear medicine which emphasize the diagnosis of the patient's problem rather than the technical performance of the procedure. The book is arranged by organ systems and each section begins with a description of the technique and findings in a normal study.

  7. NUCLEAR PLANT OPERATIONS AND

    E-print Network

    Demazière, Christophe

    of Reactor Physics SE-41296 Gothenburg, Sweden GABOR PÓR Budapest University of Technology and Economics H reactor Unit 4 of the Ringhals Nuclear Power Plant (Sweden) during fuel cycle 16 is analyzed COEFFICIENT MEASUREMENTS CHRISTOPHE DEMAZIÈRE* and IMRE PÁZSIT Chalmers University of Technology, Department

  8. 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…

  9. Nuclear lamins and neurobiology.

    PubMed

    Young, Stephen G; Jung, Hea-Jin; Lee, John M; Fong, Loren G

    2014-08-01

    Much of the work on nuclear lamins during the past 15 years has focused on mutations in LMNA (the gene for prelamin A and lamin C) that cause particular muscular dystrophy, cardiomyopathy, partial lipodystrophy, and progeroid syndromes. These disorders, often called "laminopathies," mainly affect mesenchymal tissues (e.g., striated muscle, bone, and fibrous tissue). Recently, however, a series of papers have identified important roles for nuclear lamins in the central nervous system. Studies of knockout mice uncovered a key role for B-type lamins (lamins B1 and B2) in neuronal migration in the developing brain. Also, duplications of LMNB1 (the gene for lamin B1) have been shown to cause autosome-dominant leukodystrophy. Finally, recent studies have uncovered a peculiar pattern of nuclear lamin expression in the brain. Lamin C transcripts are present at high levels in the brain, but prelamin A expression levels are very low-due to regulation of prelamin A transcripts by microRNA 9. This form of prelamin A regulation likely explains why "prelamin A diseases" such as Hutchinson-Gilford progeria syndrome spare the central nervous system. In this review, we summarize recent progress in elucidating links between nuclear lamins and neurobiology. PMID:24842906

  10. SUPERFLUIDITY OF NUCLEAR MATTER

    Microsoft Academic Search

    R. L. Mills; A. M. Sessler; S. A. Moszkowski; D. G. Shankland

    1959-01-01

    A criterion for the superfluidity of infinite nuclear matter was given ; in the form of a variational principle by Cooper, Mills, and Sessler, (Phys. Rev. ; 114, 1377 (1959)). Computations are reported which are an iraprovement over ; those in CMS in three respects: the effective mass approxirmtion was removed, ; more realistic two-body potentials were employed, and superior

  11. Lifetimes of Nuclear Isomers

    Microsoft Academic Search

    Steven A. Moszkowski

    1953-01-01

    Lifetimes of nuclear isomers for gamma-transitions are calculated theoretically on the basis of various independent particle models; e.g., single proton, single neutron, and states of several particles (Sec. II). The calculations of this paper are essentially restricted to the most common type of transition viz., multipole order equal to spin change. The lifetime is expressed in terms of a matrix

  12. Managing nuclear accidents

    Microsoft Academic Search

    D. Golding; J. X. Kasperson; R. E. Kasperson; R. Goble; J. E. Seley; G. Thompson; C. P. Wolf

    1992-01-01

    An accident at a nuclear power plant can pose a serious threat to surrounding populations. If people and their government are poorly prepared, as was the case at Windscale, England in 1957, Three Mile Island (TMI) in the United States in 1979, and Chernobyl in the Soviet Union in 1986, substantial exposure to radiation could occur. Much has been done

  13. Nuclear Propulsion in Space (1968)

    ScienceCinema

    None

    2014-06-17

    Project NERVA was an acronym for Nuclear Engine for Rocket Vehicle Application, a joint program of the U.S. Atomic Energy Commission and NASA managed by the Space Nuclear Propulsion Office (SNPO) at the Nuclear Rocket Development Station in Jackass Flats, Nevada U.S.A. Between 1959 and 1972, the Space Nuclear Propulsion Office oversaw 23 reactor tests, both the program and the office ended at the end of 1972.

  14. Future Prospects for Nuclear Power after Fukushima

    E-print Network

    Goldberg, Bennett

    Future Prospects for Nuclear Power after Fukushima Nuclear is a highintensity energy source at the FukushimaDaiichi nuclear power plant in Japan has changed the perception of nuclear as a safe energy source

  15. Nuclear Fuel Reprocessing

    SciTech Connect

    Harold F. McFarlane; Terry Todd

    2013-11-01

    Reprocessing is essential to closing nuclear fuel cycle. Natural uranium contains only 0.7 percent 235U, the fissile (see glossary for technical terms) isotope that produces most of the fission energy in a nuclear power plant. Prior to being used in commercial nuclear fuel, uranium is typically enriched to 3–5% in 235U. If the enrichment process discards depleted uranium at 0.2 percent 235U, it takes more than seven tonnes of uranium feed to produce one tonne of 4%-enriched uranium. Nuclear fuel discharged at the end of its economic lifetime contains less one percent 235U, but still more than the natural ore. Less than one percent of the uranium that enters the fuel cycle is actually used in a single pass through the reactor. The other naturally occurring isotope, 238U, directly contributes in a minor way to power generation. However, its main role is to transmute into plutoniumby neutron capture and subsequent radioactive decay of unstable uraniumand neptuniumisotopes. 239Pu and 241Pu are fissile isotopes that produce more than 40% of the fission energy in commercially deployed reactors. It is recovery of the plutonium (and to a lesser extent the uranium) for use in recycled nuclear fuel that has been the primary focus of commercial reprocessing. Uraniumtargets irradiated in special purpose reactors are also reprocessed to obtain the fission product 99Mo, the parent isotope of technetium, which is widely used inmedical procedures. Among the fission products, recovery of such expensive metals as platinum and rhodium is technically achievable, but not economically viable in current market and regulatory conditions. During the past 60 years, many different techniques for reprocessing used nuclear fuel have been proposed and tested in the laboratory. However, commercial reprocessing has been implemented along a single line of aqueous solvent extraction technology called plutonium uranium reduction extraction process (PUREX). Similarly, hundreds of types of reactor fuels have been irradiated for different purposes, but the vast majority of commercial fuel is uranium oxide clad in zirconium alloy tubing. As a result, commercial reprocessing plants have relatively narrow technical requirements for used nuclear that is accepted for processing.

  16. Nuclear power and public perception

    Microsoft Academic Search

    Levenson

    1976-01-01

    A recent public opinion poll showed that 66 percent of all Americans were in favor of nuclear power compared to 57 percent in 1971, and 78 percent felt nuclear power was the least damaging to the environment of the currently available alternatives of coal, oil, and nuclear. The author attempts to identify facts relative to some publicly raised issues, even

  17. Environmental aspects of nuclear power

    Microsoft Academic Search

    1988-01-01

    Nuclear power provides the world with an important option for generating electricity. To successfully and safely utilize this power, engineering and environmental factors should be carefully considered throughout a nuclear power plant project, especially during the planning stages. This paper discusses the major environmental aspects of a nuclear power plant project from site selection to retirement. During the site selection

  18. Reliability Technology and Nuclear Power

    Microsoft Academic Search

    B. John Garrick; Stan Kaplan

    1976-01-01

    The threat to nuclear power as the cornerstone of energy independence has reached an unsettling high. Never has the need been greater to tell the public the nuclear story and tell it convincingly. We believe that when the facts are presented in a comprehendible manner, the public will make the right decision about nuclear power-and, to be sure, it is

  19. Nuclear power plant design analysis

    SciTech Connect

    Sesonske, A.

    1973-01-01

    Information concerning the engineering aspects of the design of commercial nuclear power plants is presented. Topics discussed include: electric utility economics; nuclear plant cconomics; thermal-transport systems and core design; nuclear analysis methods; safcty requirements; fuel-system analysis; dcsign considerations; and optimization approaches. (DCC)

  20. Overview paper on nuclear power

    SciTech Connect

    Spiewak, I.; Cope, D.F.

    1980-09-01

    This paper was prepared as an input to ORNL's Strategic Planning Activity, ORNL National Energy Perspective (ONEP). It is intended to provide historical background on nuclear power, an analysis of the mission of nuclear power, a discussion of the issues, the technology choices, and the suggestion of a strategy for encouraging further growth of nuclear power.

  1. Game Imaging Meets Nuclear Reality

    SciTech Connect

    Michel, Kelly; Watkins, Adam

    2011-03-21

    At Los Alamos National Laboratory, a team of artists and animators, nuclear engineers and computer scientists is teaming to provide 3-D models of nuclear facilities to train IAEA safeguards inspectors and others who need fast familiarity with specific nuclear sites.

  2. Behavior, society, and nuclear war

    SciTech Connect

    Tetlock, P.E.; Husbands, J.L.; Jervis, R.; Stern, P.C.; Tilly, C.

    1989-01-01

    This book contains chapters on the following topics related to nuclear arms and nuclear war: crisis decision making; behavioral aspects of negotiations on mutual security; democracy, public opinion, and nuclear weapons; the case of wars; A review of theories; methodological themes and variations.

  3. Nuclear Technology: Making Informed Decisions.

    ERIC Educational Resources Information Center

    Altshuler, Kenneth

    1989-01-01

    Discusses a unit on nuclear technology which is taught in a physics class. Explains the unit design, implementation process, demonstrations used, and topics of discussion that include light and optics, naturally and artificially produced sources of radioactivity, nuclear equations, isotopes and half-lives, and power-generating nuclear reactors.…

  4. Nuclear Fuel Cycle: Environmental Impact

    Microsoft Academic Search

    Rodney C. Ewing

    1 The last two, weapons and waste, are directly tied to the type of nuclear fuel cycle (Figure 4 in the main nuclear article by Raj et al. in this issue). The different fuel cycles reflect different strategies for the utilization of fissile nuclides, mainly 235 U and 239 Pu, and these different strategies have important implications for nuclear waste

  5. Job Prospects for Nuclear Engineers.

    ERIC Educational Resources Information Center

    Basta, Nicholas

    1985-01-01

    As the debate over nuclear safety continues, the job market remains healthy for nuclear engineers. The average salary offered to new nuclear engineers with bachelor's degrees is $27,400. Salary averages and increases compare favorably with other engineering disciplines. Various job sources in the field are noted. (JN)

  6. China's Nuclear Industry After Fukushima

    E-print Network

    YUAN, Jingdong

    2013-01-01

    nuclear power reactors and technologies, to de- veloppower plants must meet nuclear safety standards and adopt third-gener- ation nuclear reactor technology.power plants while requiring that all new plants meet international safety standards and adopt Generation-III reactor technology.

  7. Report Card on Nuclear Power

    ERIC Educational Resources Information Center

    Novick, Sheldon

    1974-01-01

    Problems facing the nuclear power industry include skyrocketing construction costs, technical failures, fuel scarcity, power plant safety, and the disposal of nuclear wastes. Possible solutions include: reductions in nuclear power plant construction, a complete moratorium on new plant construction, the construction of fast breeder reactors and the…

  8. Nucleon Properties in Nuclear Matter

    Microsoft Academic Search

    Ulugbek Yakhshiev; Hyun-Chul Kim

    2011-01-01

    We present recent studies on the effective mass of the nucleon in infinite and homogeneous nuclear matter and its relation to nuclear matter properties within the framework of the in-medium modified Skyrme model. Medium modifications are achieved by introducing optical potential for pion fields and parametrization of the Skyrme parameter in nuclear medium. The present approach is phenomenologically well justified

  9. 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

  10. 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...

  11. 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...

  12. Historical civilian nuclear accident based Nuclear Reactor Condition Analyzer

    NASA Astrophysics Data System (ADS)

    McCoy, Kaylyn Marie

    There are significant challenges to successfully monitoring multiple processes within a nuclear reactor facility. The evidence for this observation can be seen in the historical civilian nuclear incidents that have occurred with similar initiating conditions and sequences of events. Because there is a current lack within the nuclear industry, with regards to the monitoring of internal sensors across multiple processes for patterns of failure, this study has developed a program that is directed at accomplishing that charge through an innovation that monitors these systems simultaneously. The inclusion of digital sensor technology within the nuclear industry has appreciably increased computer systems' capabilities to manipulate sensor signals, thus making the satisfaction of these monitoring challenges possible. One such manipulation to signal data has been explored in this study. The Nuclear Reactor Condition Analyzer (NRCA) program that has been developed for this research, with the assistance of the Nuclear Regulatory Commission's Graduate Fellowship, utilizes one-norm distance and kernel weighting equations to normalize all nuclear reactor parameters under the program's analysis. This normalization allows the program to set more consistent parameter value thresholds for a more simplified approach to analyzing the condition of the nuclear reactor under its scrutiny. The product of this research provides a means for the nuclear industry to implement a safety and monitoring program that can oversee the system parameters of a nuclear power reactor facility, like that of a nuclear power plant.

  13. 365ENSEANZA DE LAS CIENCIAS, 2004, 22(3), 365378 ALGUNAS POSIBILIDADES DELARTCULO DE INVESTIGACIN

    E-print Network

    Campanario, Juan Miguel

    365ENSEÑANZA DE LAS CIENCIAS, 2004, 22(3), 365­378 ALGUNAS POSIBILIDADES DELARTÍCULO DE los artículos científicos como un recurso para la enseñanza de las ciencias. Se analizan las cuestionar ideas inadecuadas sobre la ciencia y el conocimiento científico. Palabras clave. Enseñanza de las

  14. PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [University of Nevada, Las Vegas, Libraries

    E-print Network

    Ahmad, Sajjad

    PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [University of Nevada, Las Vegas ; Debbie Soukupc a School of Life Sciences, University of Nevada, Las Vegas, Las Vegas, Nevada, USA b Division of Earth and Ecosystem Sciences, Desert Research Institute, Las Vegas, Nevada, USA c Department

  15. Year One Peer-Evaluation Report University of Nevada Las Vegas

    E-print Network

    Cho, Hokwon

    Year One Peer-Evaluation Report University of Nevada Las Vegas Las Vegas, Nevada March 1 - May 20, Las Vegas' year one self-evaluation report: Dr. Dana L. Thomas, Chair, Vice Provost and Accreditation of the University of Nevada Las Vegas' Year One Self-Evaluation Report; a hard copy of the University and Community

  16. Las organizaciones: xodo.org, Pour Quoi?, CBA de Madrid, Comit de Solidaridad

    E-print Network

    Las organizaciones: Éxodo.org, Pour Quoi?, CBA de Madrid, Comité de Solidaridad con el África Negra Prensa el viernes 5 de septiembre a las 12:00h en el Círculo de Bellas Artes de Madrid "APOYO A CADDY Prensa este viernes 5 de septiembre a las 12:00h en el Círculo de Bellas Artes de Madrid. Las

  17. La segregación social del espacio en las ciudades de América Latina

    Microsoft Academic Search

    Francisco Sabatini

    2006-01-01

    El presente informe expone las características y tendencias de la segregación residencial en las ciudades de América Latina, sus causas y consecuencias, el estado de la investigación en este campo, y las políticas que podrían controlar la segregación. Hacia el final, sugiere las implicancias que este panorama podría tener para los esfuerzos que está desarrollando el Banco Interamericano de Desarrollo

  18. La Naturaleza Contradictoria de las Peliculas Hechas en Mexico Sobre la Revolucion Mexicana 

    E-print Network

    Garza, Alex Steve

    2010-10-12

    patriarcales. Este estudio es singular ya que analiza un gran n?mero de textos para poder dar un mejor panorama de c?mo permanecieron estas t?cnicas en las pel?culas hechas entre las d?cadas 1930-70. Dado que las pel?culas sonoras fueron las que le dieron...

  19. Nuclear eclectic power.

    PubMed

    Rose, D J

    1974-04-19

    The uranium and thorium resources, the technology, and the social impacts all seem to presage an even sharper increase in nuclear power for electric generation than had hitherto been predicted. There are more future consequences. The "hydrogen economy." Nuclear power plants operate best at constant power and full load. Thus, a largely nuclear electric economy has the problem of utilizing substantial off-peak capacity; the additional energy generation can typically be half the normal daily demand. Thus, the option of generating hydrogen as a nonpolluting fuel receives two boosts: excess nuclear capacity to produce it, plus much higher future costs for oil and natural gas. However, the so-called "hydrogen economy" must await the excess capacity, which will not occur until the end of the century. Nonelectric uses. By analyses similar to those performed here, raw nuclear heat can be shown to be cheaper than heat from many other fuel sources, especially nonpolluting ones. This will be particularly true as domestic natural gas supplies become more scarce. Nuclear heat becomes attractive for industrial purposes, and even for urban district heating, provided (i) the temperature is high enough (this is no problem for district heating, but could be for industry; the HTGR's and breeders, with 600 degrees C or more available, have the advantage); (ii) there is a market for large quantities (a heat rate of 3800 Mw thermal, the reactor size permitted today, will heat Boston, with some to spare); and (iii) the social costs become more definitely resolved in favor of nuclear power. Capital requirements. Nuclear-electric installations are very capital-intensive. One trillion dollars for the plants, backup industry, and so forth is only 2 percent of the total gross national product (GNP) between 1974 and 2000, at a growth rate of 4 percent per year. But capital accumulation tends to run at about 10 percent of the GNP, so the nuclear requirements make a sizable perturbation. Also increasing the electric share of energy provision means increasing electric power utilization, which has a high technological content and demands yet more capital. Thus, provision of capital is a major problem ahead, especially for electric utilities. The need for people. The supply of available trained technologists, environmental engineers, and so on, especially in the architect-engineer profession, is insufficient for the task ahead, especially since the same categories of people will be in demand to build up a synthetic fuels industry and do other new things. Beyond these specific items and beyond the technological discussion, one can feel deeper currents running in this debate. Issues that started out seeming technological ended up being mainly societal: prevention of clandestine use, either by vigilance or by public spirit; a determination to maintain quality and to safeguard wastes that transcends narrow interests; a perception of social benefits and damage much more holistic than before; the need to manage programs more openly and better than before. Questions and doubts become more acute, answers and methods less sure. Here is a final question. We have never before been given a virtually infinite resource of something we craved. So far, increasingly large amounts of energy have been used to turn resources into junk, from which activity we derive ephemeral benefit and pleasure; the track record is not too good. What will we do now? PMID:17792564

  20. Nuclear DNA, nuclear area and nuclear dry mass in thirteen species of Crotalaria (Angiospermae, Leguminosae)

    Microsoft Academic Search

    P. K. Gupta

    1976-01-01

    Estimations on nuclear DNA content, nuclear area and nuclear dry mass were made on 13 species of Crotalaria, with the help of Vicker's M 85 microdensitometer and Vicker's interferometer. Highly significant differences for all three characters were found between species. DNA density (DNA\\/area) increased with increase in DNA content. The cultivated species, C. juncea had a lower DNA density relative

  1. Development of Curricula for Nuclear Radiation Protection, Nuclear Instrumentation, and Nuclear Materials Processing Technologies. Final Report.

    ERIC Educational Resources Information Center

    Hull, Daniel M.

    A study was conducted to assist two-year postsecondary educational institutions in providing technical specialty courses for preparing nuclear technicians. As a result of project activities, curricula have been developed for five categories of nuclear technicians and operators: (1) radiation protection technician, (2) nuclear instrumentation and…

  2. The NUCLEONICA Nuclear Science Portal

    NASA Astrophysics Data System (ADS)

    Magill, Joseph; Dreher, Raymond

    2009-08-01

    NUCLEONICA (www.nucleonica.net) is a new nuclear science web portal which provides a customisable, integrated environment and collaboration platform using the latest internet "Web 2.0" technology. NUCLEONICA is aimed at professionals, academics and students working in nuclear power, health physics and radiation protection, nuclear and radio-chemistry, and astrophysics. A unique feature of the portal is the wide range of user friendly web-based nuclear science applications. The portal is also ideal for education and training purposes and as a knowledge management platform to preserve nuclear knowledge built up over many decades.

  3. LAS ESTIMACIONES DEL DESEMPLEO DE EQUILIBRIO. UNA PANORÁMICA

    Microsoft Academic Search

    FRANCISCO GÓMEZ; CARLOS USABIAGA

    En este artículo abordamos una panorámica de las estimaciones del de- sempleo de equilibrio de la economía española realizadas desde mediados de los años ochenta hasta la actualidad. En primer lugar, exponemos sinté- ticamente en qué consisten los métodos más comúnmente empleados para medir el desempleo de equilibrio, señalando sus propiedades y limitacio- nes. Clasificamos los métodos en dos grupos,

  4. Paul Cockshott, Allin Cottrell Las ideas importantes del socialismo del

    E-print Network

    Cockshott, W. Paul

    : Acabó con la polarización de la sociedad en ricos y pobres Acabó con el desempleo Logró progreso ventajas: Alguna reducción en las desigualdades del ingreso Reducción del desempleo Progreso económico para diferencias grandes entre unos billonarios y los trabajadores ordinarios seguían. El desempleo masivo

  5. 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

  6. Visualizing Large Datasets with LAS and Google Earth

    Microsoft Academic Search

    J. Li; R. Schweitzer; S. Hankin; A. Manke; K. O'Brien

    2007-01-01

    As experiments and simulations in Earth System Science grow larger and more complex, dataset volumes are growing explosively. Web-based visualization and analysis of these datasets is becoming a challenge due to large amount of data and the limit of network bandwidth. The Live Access Server (LAS) is a highly configurable Web server designed to provide flexible access to visualization and

  7. FLORAY VEGETACION Parque Natural Sierras de Cazorla, Segura y Las

    E-print Network

    Herrera, Carlos M.

    /pinum L.), el Grosellero Uva -Espina (Rives uva-crispa L.) y el Mundo (Viburnum opu/us L.), entre las más. Sanicu/a europaea L. Tussi/ago farfara L. Bonetero (Euonimus latifolius) . Frutos de Mundo (Viburnum opulus) Paracerrar este apartado tenemos que hacer men- ció

  8. 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."…

  9. La efectividad del mercadeo de las PYMES en Boyacá

    Microsoft Academic Search

    Edgar Enrique Zapata Guerrero

    2001-01-01

    El presente artículo es el resultado de una investigación cuantitativa y cualitativa, realizada en Tunja, Duitama y Sogamoso entre 1988 y el 2000, que pretende identificar de qué factores depende la efectividad de mercadeo en las pequeñas y medianas empresas del sector industrial y de servicios en Boyaca. Dicha investigación estableció que la efectividad del mercadeo depende de una mezcla

  10. 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

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

    E-print Network

    Carrascal, Luis M.

    ATLAS DE LAS AVES EN INVIERNO EN ESPAÑA Servicio de Vida Silvestre Subdirección General de Medio Ornitología (SEO/BirdLife) Madrid, 2012 #12;94 Espacios protegidos y aves invernantes en España. ¿Existe un dos inventarios de IBA (De Juana et al., 1989; Viada, 1998), estando prevista una actualización en

  12. Condiciones de uso. 1. INFORMACIN LEGAL Y ACEPTACIN DE LAS

    E-print Network

    restringidos, siguiendo las normas del Catálogo de Servicios de los Sistemas Informáticos de la U.C.M. aprobado, diseños, gráficos, informaciones, bases de datos, archivos de video, sonido y/o imagen, logos,...) y demás

  13. Parametrizacion de las transformaciones horizontales en el modelo de herradura

    E-print Network

    Boyer, Edmond

    aproxi- maci´on no es realista porque la informaci´on requerida para regenerar el sistema no est informaci´on de bajo nivel del sistema origen debe prevalecer en el sistema destino, por lo que una´on de transforma- ciones horizontales con informaci´on descubierta en las transformaciones verticales y

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

    E-print Network

    Hemmers, Oliver

    station to discuss pedestrian safety in the Las Vegas metropolitan area after a series of auto-pedestrian County Department of Public Works (CCDPW), Nevada Department of Public Safety- Office of Traffic Safety in metropolitan areas. · Mobility and safety issues to meet specific needs of increasing population groups

  15. 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

  16. Geologic studies for seismic hazard assessment, Las Positas Fault Zone

    SciTech Connect

    Carpenter, D.W.; Clark, R.J.

    1982-04-08

    Since its existence was reported, the northeast trending Las Positas Fault Zone has been the subject of controversy. Because of proximity of the Las Positas Fault to Lawrence Livermore National Laboratory (LLNL) facilities, geologists from the Laboratory have performed an extensive study of this structure. The Las Positas Fault Zone is best expressed in southeastern Livermore Valley between Arroyo Mocho and the Livermore Oil Field. Here, the informally named northern branch consists of en-echelon shears separating alluvium northwest of the fault from deformed Livermore Formation and uplifted late Pleistocene terrace deposits to the southeast. A /sup 14/C date of 17,400 +- 250 y B.P. was obtained from displaced alluvial deposits. The erosion surface on the lower member of the Livermore Formation has been displaced vertically about 60 m across the northern branch and preserved slickensides indicate oblique but mostly lateral motion. An 85 cm vertical offset of colluvium and possible tectonic creep along the southern branch suggest historic activity on this strand. Net motion is almost entirely lateral. Microseismicity during the period 1969 to 1981 correlates with the south branch of the Las Positas Fault but not the north branch.

  17. La enseñanza de la Bioética en las Universidades Españolas

    Microsoft Academic Search

    María Casado; Fabiola Leyton

    2009-01-01

    Este artículo pretende dar cuenta del trabajo llevado a cabo por la Cátedra UNESCO de Bioética de la Universitat de Barcelona a lo largo del curso 2008-09, con la finalidad de conocer pormenorizadamente cuál es la situación de la enseñanza de la bioética en las universidades españolas. La Cátedra UNESCO de la UB asumió esta tarea a petición de la

  18. LAS removal and biodegradation in a wastewater treatment plant

    Microsoft Academic Search

    L. Cavalli; A. Gellera; A. Landone

    1993-01-01

    Linear alkylbenzene sulfonate (LAS) biodegrades easily and loses it tensioactive properties quickly through a primary biodegradation process, as many works of literature testify. Many studies have been carried out in laboratories or in pilot plants, whereas few have been undertaken in a wastewater treatment plant (WWTP). In Italy, unlike in other countries, no detailed investigation has been made so far

  19. Las teorías del desarrollo a principios del siglo XXI

    Microsoft Academic Search

    Amartya Sen

    1998-01-01

    Este artículo revisa el estado actual de las teorías del desarrollo teniendo en cuenta la experiencia histórica y la evolución interna de la teoría desde finales de la Segunda Guerra Mundial. Aunque la comprensión del desarrollo ha mejorado, se han hecho generalizaciones indebidas y extraído lecciones infundadas. Sen rechaza la oposición entre Estado y mercado y entre planificación y rentabilidad,

  20. Un enfoque gerencial de la teoría de las restricciones

    Microsoft Academic Search

    Carlos Iván Aguilera

    2000-01-01

    El presente artículo tiene como propósito presentar los principales conceptos que sustentan la teoría de las restricciones y que ayudan a los gerentes a focalizar su acción en decisiones que tocan los aspectos más críticos que inciden sobre la eficacia de la empresa. En especial, se llama la atención en el contraste entre focalizar la empresa en la optimización, ya

  1. LAS NUEVAS TECNOLOGÍAS EN LA FORMACIÓN UNIVERSITARIA CUBANA

    Microsoft Academic Search

    Yanet Fernández Haber; Lucia Caridad Domínguez Delgado; Luisa Fabiola Alcina Domínguez

    2010-01-01

    El desarrollo tecnológico de hoy ha estremecido las estructuras universitarias y ha convertido a la computadora en un poderoso medio de enseñanza-aprendizaje en los estudiantes universitarios cubanos y en un valioso instrumento para transformar la pedagogía, hacia una pedagogía más efectiva.

  2. 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...

  3. NRC - regulator of nuclear safety

    SciTech Connect

    NONE

    1997-05-01

    The U.S. Nuclear Regulatory Commission (NRC) was formed in 1975 to regulate the various commercial and institutional uses of nuclear energy, including nuclear power plants. The agency succeeded the Atomic Energy Commission, which previously had responsibility for both developing and regulating nuclear activities. Federal research and development work for all energy sources, as well as nuclear weapons production, is now conducted by the U.S. Department of Energy. Under its responsibility to protect public health and safety, the NRC has three principal regulatory functions: (1) establish standards and regulations, (2) issue licenses for nuclear facilities and users of nuclear materials, and (3) inspect facilities and users of nuclear materials to ensure compliance with the requirements. These regulatory functions relate to both nuclear power plants and to other uses of nuclear materials - like nuclear medicine programs at hospitals, academic activities at educational institutions, research work, and such industrial applications as gauges and testing equipment. The NRC places a high priority on keeping the public informed of its work. The agency recognizes the interest of citizens in what it does through such activities as maintaining public document rooms across the country and holding public hearings, public meetings in local areas, and discussions with individuals and organizations.

  4. Nuclear Quenching in Gaseous Argon

    NASA Astrophysics Data System (ADS)

    Kazkaz, Kareem; Bernstein, Adam; Foxe, Michael; Hagmann, Christian; Jovanovic, Igor; Stoeffl, Wolfgang; Winant, Celeste

    2008-10-01

    In many media and with varying degrees of efficiency, nuclear recoils can induce ionization and/or scintillation. These nuclear recoil signatures can be used in dark matter searches and neutrino physics experiments, and to detect neutrons. To understand the behavior of the ionization process induced by nuclear recoils, nuclear quenching factors must be measured at various energies to properly reconstruct the recoil event. In this context, the quench factor is defined as the ratio of the number of electron-ion pairs produced by a nuclear recoil of a given energy to the number produced by an electron recoil of the same energy. Taking advantage of a unique 60 keV portable neutron source developed by LLNL, we will present latest results from our efforts to measure the nuclear quenching factor in gaseous argon at the lowest energy yet attempted. We also discuss using nuclear recoils in liquid argon to search for coherent neutrino scatters.

  5. Nuclear War. The moral dimension

    SciTech Connect

    Child, J.W.

    1985-01-01

    U.S. nuclear policy has become the target of increasing criticism during the past decade. Critics often argue that the use of nuclear weapons would be irrational, would destroy humankind, and thus could not serve any rational policy goal. Other critics point to the immortality of the use of nuclear weapons. Both groups condemn U.S. military policy. In Nuclear War, James Child considers and rejects both these lines of criticism. He argues that a policy of deterrence can be both rational and moral; that U.S. nuclear policy is, on balance, based on rational and moral foundations. Child examines near-term consequences of a nuclear war and finds them ghastly but not unthinkable or incomparable to the havoc produced by previous wars. He also analyzes long-term consequences, such as those proposed by the ''nuclear winter'' theory, and finds the fear of total annihilation of humankind to be unfounded.

  6. Thermal expansion in metal/lithia-alumina-silica (LAS) composites

    SciTech Connect

    Wolff, E.G.

    1988-03-01

    Lithia-alumina-silica (LAS) with metallic dispersions offers a new approach toward near-zero, isotopic, thermal expansion composites. The metallic phase contributes a positive coefficient of thermal expansion (CTE) to the negative CTE of the glass/ceramic matrix. In addition, the metal will increase the electrical and thermal conductivities over those of the matrix alone. The LAS systems offers tailorable negative CTEs and light weight compared to other negative CTE ceramics. The most negative CTE phase is crystalline /beta/-eucryptite, whose proportion in an initially glassy matrix can be controlled by heat treatment. Dispersed metal powders were both hot-pressed and cold-pressed and sintered together with LAS matrices prepared by sol gel methods. Super Invar powder was studied for its minimal CTE mismatch, while titanium powders offered a compromise between light weight and low CTE. An ultralow-expansion (ULE) glass- and linear variable differential transducer (LVDT)-based differential dilatometer was developed for rapid screening of compositions, while a double-laser Michelson interferometer was used for precise near-zero CTE measurements. The reinforced /beta/-eucryptite glass/ceramic matrix exhibited both a U-shaped /Delta/L/L curve with temperature and some thermal hysteresis, depending on the fabrication and heat treatment sequences. The temperature of the zero-CTE portion of this curve was found to change with increasing titanium powder content. Results are also given for mixtures of Super Invar powders in ULE glass and /beta/-eucryptite matrices. Negative CTEs in a LAS matrix above ambient temperatures were more difficult to obtain than below, although the use of petalite (high-silica LAS) appears promising.

  7. Thermal expansion in metal/lithia-alumina-silica (LAS) composites

    NASA Astrophysics Data System (ADS)

    Wolff, E. G.

    1988-03-01

    Lithia-alumina-silica (LAS) with metallic dispersions offers a new approach toward near-zero, isotropic, thermal expansion composites. The metallic phase contributes a positive coefficient of thermal expansion (CTE) to the negative CTE of the glass/ceramic matrix. In addition, the metal will increase the electrical and thermal conductivities over those of the matrix alone. The LAS system offers tailorable negative CTEs and light weight compared to other negative CTE ceramics. The most negative CTE phase is crystalline ?-eucryptite, whose proportion in an initially glassy matrix can be controlled by heat treatment. Dispersed metal powders were both hot-pressed and cold-pressed and sintered together with LAS matrices prepared by sol gel methods. Super Invar powder was studied for its minimal CTE mismatch, while titanium powders offered a compromise between light weight and low CTE. An ultralow-expansion (ULE) glass- and linear variable differential transducer (LVDT)-based differential dilatometer was developed for rapid screening of compositions, while a double-laser Michelson interferometer was used for precise near-zero CTE measurements. The reinforced ?-eucryptite glass/ceramic matrix exhibited both a U-shaped ?L/L curve with temperature and some thermal hysteresis, depending on the fabrication and heat treatment sequences. The temperature of the zero-CTE portion of this curve was found to change with increasing titanium powder content. Results are also given for mixtures of Super Invar powders in ULE glass and ?-eucryptite matrices. Negative CTEs in a LAS matrix above ambient temperatures were more difficult to obtain than below, although the use of petalite (high-silica LAS) appears promising.

  8. Nuclear functions of prefoldin

    PubMed Central

    Millán-Zambrano, Gonzalo; Chávez, Sebastián

    2014-01-01

    Prefoldin is a cochaperone, present in all eukaryotes, that cooperates with the chaperonin CCT. It is known mainly for its functional relevance in the cytoplasmic folding of actin and tubulin monomers during cytoskeleton assembly. However, both canonical and prefoldin-like subunits of this heterohexameric complex have also been found in the nucleus, and are functionally connected with nuclear processes in yeast and metazoa. Plant prefoldin has also been detected in the nucleus and physically associated with a gene regulator. In this review, we summarize the information available on the involvement of prefoldin in nuclear phenomena, place special emphasis on gene transcription, and discuss the possibility of a global coordination between gene regulation and cytoplasmic dynamics mediated by prefoldin. PMID:25008233

  9. The nuclear battery

    NASA Astrophysics Data System (ADS)

    Kozier, K. S.; Rosinger, H. E.

    The evolution and present status of an Atomic Energy of Canada Limited program to develop a small, solid-state, passively cooled reactor power supply known as the Nuclear Battery is reviewed. Key technical features of the Nuclear Battery reactor core include a heat-pipe primary heat transport system, graphite neutron moderator, low-enriched uranium TRISO coated-particle fuel and the use of burnable poisons for long-term reactivity control. An external secondary heat transport system extracts useful heat energy, which may be converted into electricity in an organic Rankine cycle engine or used to produce high-pressure steam. The present reference design is capable of producing about 2400 kW(t) (about 600 kW(e) net) for 15 full-power years. Technical and safety features are described along with recent progress in component hardware development programs and market assessment work.

  10. Uncertainty of nuclear counting

    NASA Astrophysics Data System (ADS)

    Pommé, S.; Fitzgerald, R.; Keightley, J.

    2015-06-01

    Nuclear counting is affected by pulse pileup and system dead time, which induce rate-related count loss and alter the statistical properties of the counting process. Fundamental equations are presented to predict deviations from Poisson statistics due to non-random count loss in nuclear counters and spectrometers. Throughput and dispersion of counts are studied for systems with pileup, extending and non-extending dead time, before and also after compensation for count loss. Equations are provided for random fractions of the output events, applicable to spectrometry applications. Methods for loss compensation are discussed, including inversion of the throughput equation, live-time counting and loss-free counting. Secondary effects in live-time counting are addressed: residual interference from pileup in systems with imposed dead times and errors due to varying count rate when measuring short-lived radionuclides.

  11. Stochastic nuclear dynamics

    SciTech Connect

    Bolotin, Y.L.; Gonchar, V.Y.; Inopin, E.V.; Levenko, V.V.; Tarasov, V.N.; Chekanov, N.A. (Khar'kov Physicotechnical Institute, Ukrainian Academy of Sciences, Khar'kov (UA))

    1989-07-01

    The transition from regular to random motion is studied for collective nuclear processes with large amplitude. The connection between the features of the dynamics and the geometry of the potential-energy surface is studied. Some two-dimensional dynamical systems, including quadrupole surface vibrations of nuclei and induced nuclear fission, are studied in detail. Some quantum manifestations of classical stochasticity are investigated, in particular the connection between the statistical properties of the quantum energy spectra and the nature of the motion---regular or random---in the classical limit. For potentials with a localized region of negative Gaussian curvature there is found to be a triple transition: regularity--chaos--regularity, and its influence on the statistical properties of the spectrum is investigated.

  12. American Nuclear Society

    NSDL National Science Digital Library

    Since 1954, the American Nuclear Society (ANS) has served as an organization that brings together a broad range of persons and institutions together in the interest of nuclear science and technology. Its members include 11,000 engineers, scientists, administrators, and educators representing over 1600 different institutions and government agencies. Persons in this field will want to look at sections on this site which cover membership information, honors and awards programs, and a very nice "Career" section where users can browse through employment opportunities. While these sections are geared for persons in these fields, the "Public Information" area is quite a find for the general visitor to the site. Here, visitors can take a look at valuable pieces of information, such as a radiation dose chart. Visitors will also want to look at "Reactions", which is the ANS's newsletter.

  13. Nuclear spinodal decomposition

    NASA Astrophysics Data System (ADS)

    López, Jorge A.; Lübeck, Georg

    1989-03-01

    We use computer simulations to study nuclear fragmentation as expected to occur in heavy ion reaction. Using integral equation techniques and molecular dynamics calculations we first find a potential with an equation of state resembling that of hot and dense nuclear matter. We then use this potential to study the disassembly of two dimensional classical drops. Along the lines of Cahn's theory of spinodal decomposition we calculate the structure factor of the system and extract information about the development of density fluctuations during the breakup. We find isothermal spinodal decomposition to play the dominant role in the breakup. Nucleation of bubbles in the two phase region and adiabatic spinodal decomposition were found not to contribute to the fragment production. Strong density fluctuations were detected in disassemblies crossing the critical point. Present address: Fred Hutchinson Cancer Research Center, 1124 Columbia St., Seatle, WA 98104, USA.

  14. Cryogenic nuclear gyroscope

    SciTech Connect

    Gallop, J.C.; Potts, S.P.

    1980-09-30

    A cryogenic nuclear gyroscope is described that is comprised of a cylinder of niobium cooled within a helium cryostat so as to be superconducting and to provide a trapped, substantially homogeneous magnetic field, a helium-3 sample contained within a spherical pyrex cell having nuclei possessing a net magnetic moment, coils provided to polarize the sample to provide that net magnetic moment, and a SQUID magnetometer coupled to the sample by a pick-up coil of a transformer and frequency sensitive means coupled to the SQUID to detect changes in the precession of the nuclear moments of the sample caused by rotation of the gyroscope about an axis parallel to the direction of the homogeneous magnetic field. A superconducting lead shield isolates the helium-3 sample from external magnetic fields.

  15. Inner/Outer Nuclear Membrane Fusion in Nuclear Pore Assembly

    PubMed Central

    Fichtman, Boris; Ramos, Corinne; Rasala, Beth; Harel, Amnon

    2010-01-01

    Nuclear pore complexes (NPCs) are large proteinaceous channels embedded in double nuclear membranes, which carry out nucleocytoplasmic exchange. The mechanism of nuclear pore assembly involves a unique challenge, as it requires creation of a long-lived membrane-lined channel connecting the inner and outer nuclear membranes. This stabilized membrane channel has little evolutionary precedent. Here we mapped inner/outer nuclear membrane fusion in NPC assembly biochemically by using novel assembly intermediates and membrane fusion inhibitors. Incubation of a Xenopus in vitro nuclear assembly system at 14°C revealed an early pore intermediate where nucleoporin subunits POM121 and the Nup107-160 complex were organized in a punctate pattern on the inner nuclear membrane. With time, this intermediate progressed to diffusion channel formation and finally to complete nuclear pore assembly. Correct channel formation was blocked by the hemifusion inhibitor lysophosphatidylcholine (LPC), but not if a complementary-shaped lipid, oleic acid (OA), was simultaneously added, as determined with a novel fluorescent dextran-quenching assay. Importantly, recruitment of the bulk of FG nucleoporins, characteristic of mature nuclear pores, was not observed before diffusion channel formation and was prevented by LPC or OA, but not by LPC+OA. These results map the crucial inner/outer nuclear membrane fusion event of NPC assembly downstream of POM121/Nup107-160 complex interaction and upstream or at the time of FG nucleoporin recruitment. PMID:20926687

  16. Enlightenment and nuclear order

    Microsoft Academic Search

    JOACHIM KRAUSE

    2007-01-01

    Applying the method of enlightenment correctly to the area of nuclear non-proliferation would require a major effort to critically evaluate ideologies. Liberal arms control—despite its many successes and merits—has devised over the years a whole set of ideological tenets and attitudes. Some of them have been transformed into beliefs that could be termed myths. The most prominent ideological myth of

  17. Nuclear and Cytoplasmic Glycosylation

    Microsoft Academic Search

    Doris M. Snow; Gerald W. Hart

    1998-01-01

    O-GlcNAcylation is a form of cytoplasmic and nuclear glycosylation that is found on many diverse proteins of the cell including RNA polymerase II and its associated transcription factors, cytoskeletal proteins, nucleoporins, viral proteins, heat shock proteins, tumor suppressors, and oncogenes. It involves the attachment of a single, unmodified N-acetylglucosaminyl residue O-glycosidically linked to the hydroxyl groups of serine and threonine

  18. Cold nuclear fusion

    SciTech Connect

    Tsyganov, E. N., E-mail: edward.tsyganov@utsouthwestern.edu [University of Texas Southwestern Medical Center at Dallas (United States)

    2012-02-15

    Recent accelerator experiments on fusion of various elements have clearly demonstrated that the effective cross-sections of these reactions depend on what material the target particle is placed in. In these experiments, there was a significant increase in the probability of interaction when target nuclei are imbedded in a conducting crystal or are a part of it. These experiments open a new perspective on the problem of so-called cold nuclear fusion.

  19. Theoretical nuclear physics

    Microsoft Academic Search

    E. Rost; J. R. Shephard

    1992-01-01

    This report discusses the following topics: Exact 1-loop vacuum polarization effects in 1 + 1 dimensional QHD; exact 1-fermion loop contributions in 1 + 1 dimensional solitons; exact scalar 1-loop contributions in 1 + 3 dimensions; exact vacuum calculations in a hyper-spherical basis; relativistic nuclear matter with self-consistent correlation energy; consistent RHA-RPA for finite nuclei; transverse response functions in the

  20. Nuclear medicine in oncology

    SciTech Connect

    Murphy, J.

    1996-12-31

    Radioactivity was discovered in the late 1890s, and as early as 1903, Alexander Graham Bell advocated that radioactivity be used to treat tumors. In 1913, the first paper describing therapeutic uses of radium was published; in 1936, {sup 24}Na was administered as a therapy to a leukemia patient. Three years later, uptake of {sup 89}Sr was noted in bone metastases. During the 1940s, there was increasing use of iodine therapy for thyroid diseases, including thyroid cancer. Diagnostic {open_quotes}imaging{close_quotes} with radioisotopes was increasingly employed in the 1930s and 40s using probes and grew in importance and utility with the development of scintillation detectors with photorecording systems. Although coincidence counting to detect positron emissions was developed in 1953, the first medical center cyclotron was not installed until 1961. The 1960s saw the development of {sup 99m}Tc-labeled radiopharmaceuticals, emission reconstruction tomography [giving rise to single photon emission computed tomography (SPECT) and positron emission tomography (PET)], and {sup 64}Ga tumor imaging. Nuclear medicine was recognized as a medical specialty in 1971. Radiolabeled antibodies targeting human tumors in animals was reported in 1973; antibody tumor imaging in humans was reported in 1978. Technology has continued to advance, including the development of SPECT cameras with coincidence detection able to perform FDG/PET imaging. With this overview as as backdrop, this paper focuses on the role of nuclear medicine in oncology from three perspectives: nonspecific tumor imaging agents, specific tumor imaging agents, and radioisotopes for tumor therapy. In summary, while tumor diagnosis and treatment were among the first uses explored for radioactivity, these areas have yet to reach their full potential. Development of new radioisotopes and new radiopharmaceuticals, coupled with improvements in technology, make nuclear oncology an area of growth for nuclear medicine.

  1. Nuclear Physics Review

    SciTech Connect

    Walker-Loud, Andre

    2014-11-01

    Anchoring low-energy nuclear physics to the fundamental theory of strong interactions remains an outstanding challenge. I review the current progress and challenges of the endeavor to use lattice QCD to bridge this connection. This is a particularly exciting time for this line of research as demonstrated by the spike in the number of different collaborative efforts focussed on this problem and presented at this conference. I first digress and discuss the 2013 Ken Wilson Award.

  2. Nuclear spectroscopic studies

    SciTech Connect

    Bingham, C.R.; Guidry, M.W.; Riedinger, L.L.; Sorensen, S.P.

    1993-02-08

    The Nuclear Physics group at the University of Tennessee, Knoxville is involved in several aspects of heavy-ion physics including both nuclear structure and reaction mechanisms. While our main emphasis is on experimental problems involving heavy-ion accelerators, we have maintained a strong collaboration with several theorists in order to best pursue the physics of our measurements. During the last year we have led several experiments at the Holifield Heavy Ion Research Facility and participated in others at Argonne National Laboratory. Also, we continue to be very active in the collaboration to study ultra-relativistic heavy ion physics utilizing the SPS accelerator at CERN in Geneva, Switzerland and in a RHIC detector R D project. Our experimental work is in four broad areas: (1) the structure of nuclei at high angular momentum, (2) heavy-ion induced transfer reactions, (3) the structure of nuclei far from stability, and (4) ultra-relativistic heavy-ion physics. The results of studies in these particular areas will be described in this document in sections IIA, IIB, IIC, and IID, respectively. Areas (1), (3), and (4) concentrate on the structure of nuclear matter in extreme conditions of rotational motion, imbalance of neutrons and protons, or very high temperature and density. Area (2) pursues the transfer of nucleons to states with high angular momentum, both to learn about their structure and to understand the transfer of particles, energy, and angular momentum in collisions between heavy ions. An important component of our program is the strong emphasis on the theoretical aspects of nuclear structure and reactions.

  3. Nuclear reactor decontamination

    SciTech Connect

    Torok, J.

    1981-09-01

    Heat transfer and associated surfaces in nuclear reactors are decontaminated by treating the surface with ozone to oxidize acid -insoluble metal oxides to a more soluble state, removing oxidized solubilized metal oxides, and removing other surface oxides using low concentrations of decontaminating reagents. Ozone treatment has been found very effective with alloys having surface metal oxides rendered more easily dissolved by ozone oxidation especially with chromium or chromium-nickel containing alloys.

  4. Nuclear Regulatory Commission issuances

    SciTech Connect

    NONE

    1996-04-01

    This report includes the issuances received during the April 1996 reporting period from the Commission, the Atomic Safety and Licensing Boards, the Administrative Law Judges, the Directors` Decisions, and the Decisions on Petitions for Rulemaking. Included are issuances pertaining to: (1) Yankee Nuclear Power Station, (2) Georgia Tech Research Reactor, (3) River Bend Station, (4) Millstone Unit 1, (5) Thermo-Lag fire barrier material, and (6) Louisiana Energy Services.

  5. Nuclear fragmentation by tunneling

    E-print Network

    Toshiki Maruyama; Aldo Bonasera; Satoshi Chiba

    2001-02-06

    Fragmentation of nuclear system by tunneling is discussed in a molecular dynamics simulation coupled with imaginary time method. In this way we obtain informations on the fragmenting systems at low densities and temperatures. These conditions cannot be reached normally (i.e. above the barrier) in nucleus-nucleus or nucleon-nucleus collisions. The price to pay is the small probability of fragmentation by tunneling but we obtain observables which can be a clear signature of such phenomena.

  6. QCD and Nuclear Physics

    E-print Network

    A. H. Mueller

    1999-02-11

    The main part of this talk is a review and summary of how QCD is used in two main areas of nuclear physics, namely in determining the quark flavor and spin content of the proton and in ultrarelativistic heavy ion collisions. Brief comments are made concerning effective theories in hadron physics and on the separation of various twists in using the operator product expansion to analyze hard processes.

  7. Suspected Chinese Nuclear Espionage

    NSDL National Science Digital Library

    de Nie, Michael Willem.

    1999-01-01

    This week's In the News examines serious allegations of security breaches at the US nuclear weapons laboratory in Los Alamos, New Mexico and the possible transfer of secret data to China. In what is quickly devolving into a worst case scenario, it now appears that China has secured thousands of lines of invaluable computer code from the top-level nuclear weapons lab at the Los Alamos, New Mexico. The codes were allegedly transferred by scientist Wen Ho Lee from a secure system to an unclassified computer network at the lab in 1994 and 1995, where they were apparently accessed by someone who improperly used a password. The theft of these codes, in the opinion of some officials, compromises "virtually every nuclear weapon in the United States arsenal." Domestic politics have further clouded the situation, as many critics of the Clinton administration claim that earlier reports of possible security breaches were ignored by a government focused on normalizing US-China relations and promoting trade ties. The House Select Committee on US National Security and Military/ Commercial Concerns with the People's Republic of China, chaired by Representative Christopher Cox (R-CA), completed an extensive report on the transfer of military technology in December 1998. However, the administration has delayed security clearance, attempting to keep large portions of the report classified. A sanitized version, along with a separate report by the Senate Intelligence Committee, are expected to be released in mid-May.

  8. Nuclear Power - Post Fukushima

    NASA Astrophysics Data System (ADS)

    Reyes, Jose, Jr.

    2011-10-01

    The extreme events that led to the prolonged power outage at the Fukushima Daiicchi nuclear plant have highlighted the importance of assuring a means for stable long term cooling of the nuclear fuel and containment following a complete station blackout. Legislative bodies, regulatory agencies and industry are drawing lessons from those events and considering what changes, if any, are needed to nuclear power, post Fukushima. The enhanced safety of a new class of reactor designed by NuScale Power is drawing significant attention in light of the Fukushima events. During normal operation, each NuScale containment is fully immersed in a water-filled stainless steel lined concrete pool that resides underground. The pool, housed in a Seismic Category I building, is large enough to provided 30 days of core and containment cooling without adding water. After 30 days, the decay heat generations coupled with thermal radiation heat transfer is completely adequate to remove core decay heat for an unlimited period of time. These passive power systems can perform their function without requiring an external supply of water of power. An assessment of the NuScale passive systems is being performed through a comprehensive test program that includes the NuScale integral system test facility at Oregon State University

  9. Rationality in nuclear deterrence

    SciTech Connect

    Park, J.

    1991-01-01

    This thesis expounds upon the diverse contents and operations of rationality in the context of nuclear deterrence at both the interwar and intrawar level. Most previous studies in the area of decision making under conflict and crisis either assumed a solid performance of rationality or rejected the competent role of rationality. According to the latter position, a decision maker would make a rational choice under the absence of psychological or organization barriers to an exact cognition or to a reasonable procedure of deliberation. But an important and hard question still remains: what is a rational choice For a decision theory to overcome conceptual naivety and attain methodological rigor, an integrated model of game theory and utility theory needs to be applied to the explanation of nuclear deterrence. The necessity for both game theory and utility theory comes from the substantial feature of nuclear deterrence: accommodation of great risk and unrelenting interests at stake. The combination of game theory and utility theory results in the separation of rationality from the conventional postulate of economic theory, such as the invariance principle of a linear transformation of the payoffs and minimax choice.

  10. Finding nuclear localization signals

    PubMed Central

    Cokol, Murat; Nair, Rajesh; Rost, Burkhard

    2000-01-01

    A variety of nuclear localization signals (NLSs) are experimentally known although only one motif was available for database searches through PROSITE. We initially collected a set of 91 experimentally verified NLSs from the literature. Through iterated ‘in silico mutagenesis’ we then extended the set to 214 potential NLSs. This final set matched in 43% of all known nuclear proteins and in no known non-nuclear protein. We estimated that >17% of all eukaryotic proteins may be imported into the nucleus. Finally, we found an overlap between the NLS and DNA-binding region for 90% of the proteins for which both the NLS and DNA-binding regions were known. Thus, evolution seemed to have used part of the existing DNA-binding mechanism when compartmentalizing DNA-binding proteins into the nucleus. However, only 56 of our 214 NLS motifs overlapped with DNA-binding regions. These 56 NLSs enabled a de novo prediction of partial DNA-binding regions for ?800 proteins in human, fly, worm and yeast. PMID:11258480

  11. Las Culturas Organizacional y de Calidad Como Elementos Básicos en la Transformación de Las Empresas Rurales Hacia La Competitividad

    Microsoft Academic Search

    Bertha Alicia Arce Castro; Edith Martínez Delgado

    2007-01-01

    La concepción de este modelo de Gestión de la Calidad se orienta a empresas familiares rurales, que posean conocimiento empírico en la actividad productiva que la origine, desconocimiento de sistemas administrativos, de calidad y de mercado, con la finalidad de proveerla, a través de su implementación, de las ventajas de la sistematización de todos sus procesos, generando condiciones que aseguren

  12. Science, society, and America's nuclear waste: Unit 1, Nuclear waste

    SciTech Connect

    Not Available

    1992-01-01

    This is unit 1 in a four-unit secondary curriculum. It is intended to provide information about scientific and societal issues related to the management of spent nuclear fuel from generation of electricity at nuclear powerplants and high-level radioactive waste from US national defense activities. The curriculum, supporting classroom activities, and teaching materials present a brief discussion of energy and electricity generation, including that produced at nuclear powerplants; information on sources, amounts, location, and characteristics of spent nuclear fuel and high-level radioactive waste; sources, types and effects of radiation; US policy for managing and disposing of spent nuclear fuel and high-level radioactive waste and what other countries are doing; and the components of the nuclear waste management system.

  13. The state of nuclear forensics

    NASA Astrophysics Data System (ADS)

    Kristo, Michael J.; Tumey, Scott J.

    2013-01-01

    Nuclear terrorism has been identified as one of the most serious security threats facing the world today. Many countries, including the United States, have incorporated nuclear forensic analysis as a component of their strategy to prevent nuclear terrorism. Nuclear forensics involves the laboratory analysis of seized illicit nuclear materials or debris from a nuclear detonation to identify the origins of the material or weapon. Over the years, a number of forensic signatures have been developed to improve the confidence with which forensic analysts can draw conclusions. These signatures are validated and new signatures are discovered through research and development programs and in round-robin exercises among nuclear forensic laboratories. The recent Nuclear Smuggling International Technical Working Group Third Round Robin Exercise and an on-going program focused on attribution of uranium ore concentrate provide prime examples of the current state of nuclear forensics. These case studies will be examined and the opportunities for accelerator mass spectrometry to play a role in nuclear forensics will be discussed.

  14. New Directions for Nuclear Data

    NASA Astrophysics Data System (ADS)

    Firestone, Richard

    2011-10-01

    The evaluation of nuclear data has gone on for over 75 years. After WWII it was realized that the rate of accumulation of nuclear data had become too rapid for individual scientists and engineers to scan the literature so the modern nuclear data program was funded in the US by an act of Congress under the leadership of Katherine Way. In the 1970's at Oak Ridge National Laboratory the Nuclear Data Sheets ENSDF file format was designed and continues to be used, largely unchanged, today. Although originally envisioned to support nuclear applications, ENSDF today now largely supports basic nuclear structure research. As data evaluation became a specialization a gulf developed between the research, application, and data communities that has widened over time. At this juncture in history we are facing the joint dilemmas of disconnects between research and data activities, an aging nuclear data workforce, and pressures from funding agencies to work more efficiently. In this talk I will discuss recent developments and opportunities in nuclear data and the challenges ahead of us to modernize the nuclear data program and better integrate it into the nuclear physics research community. This work was supported under U.S DOE Contract No. DE-AC02-05CH11231.

  15. Climatic Consequences of Nuclear Conflict

    NASA Astrophysics Data System (ADS)

    Robock, A.

    2011-12-01

    A nuclear war between Russia and the United States could still produce nuclear winter, even using the reduced arsenals of about 4000 total nuclear weapons that will result by 2017 in response to the New START treaty. A nuclear war between India and Pakistan, with each country using 50 Hiroshima-sized atom bombs as airbursts on urban areas, could produce climate change unprecedented in recorded human history. This scenario, using much less than 1% of the explosive power of the current global nuclear arsenal, would produce so much smoke from the resulting fires that it would plunge the planet to temperatures colder than those of the Little Ice Age of the 16th to 19th centuries, shortening the growing season around the world and threatening the global food supply. Crop model studies of agriculture in the U.S. and China show massive crop losses, even for this regional nuclear war scenario. Furthermore, there would be massive ozone depletion with enhanced ultraviolet radiation reaching the surface. These surprising conclusions are the result of recent research (see URL) by a team of scientists including those who produced the pioneering work on nuclear winter in the 1980s, using the NASA GISS ModelE and NCAR WACCM GCMs. The soot is self-lofted into the stratosphere, and the effects of regional and global nuclear war would last for more than a decade, much longer than previously thought. Nuclear proliferation continues, with nine nuclear states now, and more working to develop or acquire nuclear weapons. The continued environmental threat of the use of even a small number of nuclear weapons must be considered in nuclear policy deliberations in Russia, the U.S., and the rest of the world.

  16. Nuclear energy in a nuclear weapon free world

    SciTech Connect

    Pilat, Joseph [Los Alamos National Laboratory

    2009-01-01

    The prospect of a nuclear renaissance has revived a decades old debate over the proliferation and terrorism risks of the use of nuclear power. This debate in the last few years has taken on an added dimension with renewed attention to disarmament. Increasingly, concerns that proliferation risks may reduce the prospects for realizing the vision of a nuclear-weapon-free world are being voiced.

  17. Nuclear symmetry energy at subnormal densities from measured nuclear masses

    E-print Network

    Min Liu; Ning Wang; Zhuxia Li; Fengshou Zhang

    2010-11-17

    The symmetry energy coefficients for nuclei with mass number A=20~250 are extracted from more than 2000 measured nuclear masses. With the semi-empirical connection between the symmetry energy coefficients of finite nuclei and the nuclear symmetry energy at reference densities, we investigate the density dependence of symmetry energy of nuclear matter at subnormal densities. The obtained results are compared with those extracted from other methods.

  18. Fresh nuclear fuel measurements at Ukrainian nuclear power plants

    SciTech Connect

    Kuzminski, Jozef [Los Alamos National Laboratory; Ewing, Tom [ANL; Dickman, Debbie [PNNL; Gavrilyuk, Victor [UKRAINE; Drapey, Sergey [UKRAINE; Kirischuk, Vladimir [UKRAINE; Strilchuk, Nikolay [UKRAINE

    2009-01-01

    In 2005, the Provisions on Nuclear Material Measurement System was enacted in Ukraine as an important regulatory driver to support international obligations in nuclear safeguards and nonproliferation. It defines key provisions and requirements for material measurement and measurement control programs to ensure the quality and reliability of measurement data within the framework of the State MC&A System. Implementing the Provisions requires establishing a number of measurement techniques for both fresh and spent nuclear fuel for various types of Ukrainian reactors. Our first efforts focused on measurements of fresh nuclear fuel from a WWR-1000 power reactor.

  19. Nuclear obligations: Nuremberg law, nuclear weapons, and protest

    SciTech Connect

    Burroughs, J.R.

    1991-01-01

    Nuclear weapons use and deployment and nonviolent anti-nuclear protests are evaluated. Use of nuclear weapons would constitute war crimes and crimes against humanity as defined in both the Nuremberg Charter and Allied Control Council Law No. 10 and applied by the International Military Tribunal and other Nuremberg courts. Strategic and atomic bombing during World War 2 did not set a precedent for use of nuclear weapons. The consequentialist argument for World War 2 bombing fails and the bombing has also been repudiated by codification of the law of war in Protocol 1 to the 1949 Geneva Conventions. The legality of deploying nuclear weapons as instruments of geopolitical policy is questionable when measured against the Nuremberg proscription of planning and preparation of aggressive war, war crimes, and crimes against humanity and the United Nations Charter's proscription of aggressive threat of force. While states' practice of deploying the weapons and the arms-control treaties that regulate but do not prohibit mere possession provide some support for legality, those treaties recognize the imperative of preventing nuclear war, and the Nuclear Non-Proliferation Treaty commits nuclear-armed states to good-faith negotiation of nuclear disarmament.

  20. Nuclear Symbiosis - A Means to Achieve Sustainable Nuclear Growth while Limiting the Spread of Sensititive Nuclear Technology

    Microsoft Academic Search

    David Shropshire

    2009-01-01

    Global growth of nuclear energy in the 21st century is creating new challenges to limit the spread of nuclear technology without hindering adoption in countries now considering nuclear power. Independent nuclear states desire autonomy over energy choices and seek energy independence. However, this independence comes with high costs for development of new indigenous fuel cycle capabilities. Nuclear supplier states and

  1. Continuidad de las funciones Dr. Jose Villa Morales

    E-print Network

    Vela-Arevalo, Luz V.

    Continuidad de las funciones convexas Dr. Jos´e Villa Morales Departamento de Matem´aticas y F´isica Universidad Aut´onoma de Aguascalientes Resumen El prop´osito del presente trabajo es demostrar que una funci´on, com´unmente, introducido el concepto de funci´on convexa, el autor cree que el presente trabajo puede

  2. 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.

  3. 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

  4. DUAL ELECTRIC-NUCLEAR ENGINE

    Microsoft Academic Search

    Levoy

    1963-01-01

    The dual electric-nuclear rocket system combines a nuclear rocket for ; high thrust phases of manned interplanetary space missions with a cluster of ; electric engines powered by the same reactor for high-specific-impulse, low-; thrust phases. For a seven-man fast Mars mission, the dual electric-nuclear ; engine can reduce the space vehicle gross weight in initial earth orbit to ;

  5. Psychological aspects of nuclear war

    SciTech Connect

    Thompson, J.

    1985-01-01

    Exploring the nature of nuclear war, this treatise examines human reaction to nuclear disaster and accidental explosions. The discussion is based on evidence of human fallibility that has emerged from the psychology of accidents and from research into decision-making in military and political contexts. The book draws on the psychology of negotiation and conflict resolution to suggest ways in which the threat of nuclear war might be reduced.

  6. Global environment after nuclear war

    SciTech Connect

    Crutzen, P.J.

    1985-10-01

    In 1982, the Scientific Committee on Problems of the Environment (SCOPE), concluded that the risks of nuclear war overshadowed all other hazards to humanity and its habitat. They initiated a study on the environmental consequences of nuclear (ENEWAR) which stressed the meteorological, climatic, and environmental changes that would be an indirect product of a nuclear exchange. This paper closely examines the SCOPE report. 17 references, 1 figure.

  7. Swelling-resistant nuclear fuel

    DOEpatents

    Arsenlis, Athanasios (Hayward, CA); Satcher, Jr., Joe (Patterson, CA); Kucheyev, Sergei O. (Oakland, CA)

    2011-12-27

    A nuclear fuel according to one embodiment includes an assembly of nuclear fuel particles; and continuous open channels defined between at least some of the nuclear fuel particles, wherein the channels are characterized as allowing fission gasses produced in an interior of the assembly to escape from the interior of the assembly to an exterior thereof without causing significant swelling of the assembly. Additional embodiments, including methods, are also presented.

  8. Fusion Nuclear Science Facility (FNSF)

    Microsoft Academic Search

    Y. K. M. Peng; J. M. Park; J. M. Canik; S. J. Diem; A. C. Sontag; A. Lumsdaine; Yl Katoh; R. W. Burgess; K. Korsah; B. D. Patton; J. C. Wagner; P. J. Fogarty; M. Sawan

    2011-01-01

    A compact (Ro-1.2-1.3m), low aspect ratio, low-Q «3) Fusion Nuclear Science Facility (FNSF) was recently assessed to provide a fully integrated, D-T-fueled, continuously driven plasma, volumetric nuclear environment of copious neutrons. This environment would be used, for the first time, to carry out discovery-driven research in fusion nuclear science and materials, in parallel with and complementary to ITER. This research

  9. Sustainable futures using nuclear energy

    Microsoft Academic Search

    Romney B. Duffey

    2005-01-01

    We present the role of nuclear energy in a sustainable future. This addresses the social, economic and environmental concerns of us all. Nuclear energy today avoids the emission of nearly two billion tonnes of greenhouse gases (GHGs) each year, thanks to over 400 reactors operating worldwide.Nevertheless, there is no real recognition of real incentives for large-scale non-emitters like nuclear energy

  10. Nuclear reactor reflector

    DOEpatents

    Hopkins, Ronald J. (Pensacola, FL); Land, John T. (Pensacola, FL); Misvel, Michael C. (Pensacola, FL)

    1994-01-01

    A nuclear reactor reflector is disclosed that comprises a stack of reflector blocks with vertical water flow passages to cool the reflector. The interface between blocks is opposite support points for reactor fuel rods. Water flows between the reflector and the reactor barrel from passages in a bottom block. The top block contains a flange to limit this flow and the flange has a slot to receive an alignment pin that is welded to the barrel. The pin is held in the slot by two removable shims. Alignment bars extend the length of the stack in slots machined in each block when the stack is assembled.

  11. Nuclear Energy: Radiation Exposure

    NSDL National Science Digital Library

    John Pratte

    This lesson provides an overview of the sources and potential effects of radiation exposure. Topics include the history of the United States' domestic nuclear power program, the concept of ionizing radiation, and how radiation dosage is measured. There is also discussion of what constitutes a lethal dose of radiation and potential sources of exposure. The lesson includes an activity in which students measure their individual yearly exposures to radiation by making an inventory of lifestyle factors that affect their potential dosage and using an online calculator to sum up the contributions from the various sources.

  12. Nuclear Magnetic Resonance Gyroscope

    NASA Astrophysics Data System (ADS)

    Larsen, Michael

    2011-05-01

    The navigation grade micro Nuclear Magnetic Resonance Gyroscope (micro-NMRG) being developed by the Northrop Grumman Corporation is currently in phase 4 of the DARPA Navigation Grade Integrated Micro Gyro (NGIMG) program. The micro-NMRG technology is pushing the boundaries of size, weight, power, and performance allowing new small platform applications of navigation grade Inertial Navigation System (INS) technology. Information on the historical development of the technology, basics of operation, task performance goals, application opportunities, and a phase 2 sample of earth rate measurement data will be presented. Funding Provided by the Defense Advanced Research Projects Agency (DARPA)

  13. Continuum Nuclear Structure via

    NASA Astrophysics Data System (ADS)

    Templon, Jeffrey A.

    1993-01-01

    Nuclear spectra are generally well-understood for excitation energies below the particle-emission threshold. Above this threshold, excited states decay preferentially by emission of nucleons or nucleon clusters. These resonant excitations are short-lived, producing continuum spectra of overlapping states accompanied by non-resonant, probe -dependent background processes. The resonant excitations' properties are difficult to deduce from these spectra. Many important advances in nuclear physics require understanding of such excitations. (e,e^' X) coincidence experiments have established the utility of angular correlation measurements of particle (X) emitted by decaying resonances for continuum studies. However, electron-induced reactions excite only a subset of the total nuclear response. Hadronic probes are necessary for a complete study. This dissertation describes a (p,p^' X) coincidence experiment, the first at intermediate energies where microscopic theories apply. The reaction's utility was investigated and applied to ^{12 }C. The experiment was performed using a 156 MeV polarized proton beam. A magnetic spectrometer was used to detect scattered protons. An array of eight silicon-detector telescopes was constructed and used to measure the angular correlation of charged particles (X). Inclusive (p,p ^') and exclusive (p,p ^' X) data were acquired simultaneously. The momentum transfer range (0.6<= q<= 1.2 fm^{-1}) was covered in three spectrometer angle settings. The excitation energy range spanned the region from sharp states to quasifree processes. Analyzing powers and cross sections were measured for both inclusive and exclusive data. A simple reaction model was developed which suggested a Legendre-polynomial series should describe the sigma(theta_{X}) data. The model relates the polynomial coefficients to nuclear structure information. A result of this work is that this series was found to satisfactorily describe the data and provided new information about the ^{12} C continuum. This work also establishes a significant modification of the general picture of the continuum of light nuclei. Analysis of the coincidence data indicated that previous inclusive (p,p^') studies have grossly overestimated the size of nonresonant-background contributions. A combined analysis of our coincidence data and high-precision inclusive data was made to provide a more consistent picture of the ^{12}C continuum. Experimental and theoretic advances needed to improve the new techniques were identified.

  14. Low Energy Nuclear Reactions?

    E-print Network

    CERN. Geneva; Faccini, R.

    2014-01-01

    After an introduction to the controversial problem of Low Energy Nuclear Reactions (LENR) catalyzed by neutrons on metallic hydride surfaces we present the results of an experiment, made in collaboration with ENEA Labs in Frascati, to search neutrons from plasma discharges in electrolytic cells. The negative outcome of our experiment goes in the direction of ruling out those theoretical models expecting LENR to occur in condensed matter systems under specific conditions. Our criticism on the theoretical foundations of such models will also be presented.

  15. Nuclear reactor reflector

    DOEpatents

    Hopkins, R.J.; Land, J.T.; Misvel, M.C.

    1994-06-07

    A nuclear reactor reflector is disclosed that comprises a stack of reflector blocks with vertical water flow passages to cool the reflector. The interface between blocks is opposite support points for reactor fuel rods. Water flows between the reflector and the reactor barrel from passages in a bottom block. The top block contains a flange to limit this flow and the flange has a slot to receive an alignment pin that is welded to the barrel. The pin is held in the slot by two removable shims. Alignment bars extend the length of the stack in slots machined in each block when the stack is assembled. 12 figs.

  16. Nuclear fuel cycle costs

    SciTech Connect

    Burch, W.D.; Haire, M.J.; Rainey, R.H.

    1982-02-01

    The costs for the back-end of the nuclear fuel cycle, which were developed as part of the Nonproliferation Alternative Systems Assessment Program (NASAP), are presented. Total fuel cycle costs are given for the pressurized water reactor once-through and fuel recycle systems, and for the liquid-metal fast breeder reactor system. These calculations show that fuel cycle costs are a small part of the total power costs. For breeder reactors, fuel cycle costs are about half that of the present once-through system. The total power cost of the breeder reactor system is greater than that of light-water reactor at today's prices for uranium and enrichment.

  17. Nuclear electric power sources

    NASA Technical Reports Server (NTRS)

    Singh, J. J.

    1978-01-01

    Measurements on radioactive commercial p-n junction silicon cells show that these units are capable of delivering several hundred microwatts per curie of Am-241 alpha source, indicating their usefulness in such electronic devices as hearing aids, heart pacemakers, electronic watches, delay timers and nuclear dosimeter chargers. It is concluded that the Am-241 sources are superior to the beta sources used previously, because of higher alpha specific ionization and simultaneous production of low energy photons which are easily converted into photoelectrons for additional power.

  18. Nuclear medicine annual

    SciTech Connect

    Freeman, L.M.

    1988-01-01

    This book features a state-of-the-art report on single photon emission computed tomography (SPECT) in abdominal imaging, which highlights the emergency of /sup 99m/Tc-red cell imaging as the procedure of choice for diagnosing heptatic hemangioma. In addition, the use of captropril scinitigraphy in the study of suspected renovascular hypertension is reviewed. Articles survey research on radiolabeled monoclonal antibodies and assess the clinical experience with bone scanning for osseous metastases from breast carcinoma. An article on the role of nuclear medicine in the management of osteoporosis examines the problems that must be overcome before the bone mineral analysis with dual photon absorptiometry gains widespread clinical acceptance.

  19. Nuclear power plants under fire

    SciTech Connect

    Not Available

    1987-04-01

    Licensing of the Seabrook nuclear power plant on the New Hampshire coast and the Shoreham nuclear power plant on Long Island has been held up because the governors of Massachusetts and New York are refusing to provide the required emergency evacuation plans. Consequently, the Nuclear Regulatory Commission has proposed a rule change to allow it to make emergency evacuation plans for areas around nuclear power plants without the participation of local and state governments. Opponents, including members of Congress and several governors, say that the rule would diminish the rights of states and local governments to protect public health and safety.

  20. Nuclear Structure at the Limits

    SciTech Connect

    Nazarewicz, Witold

    1997-12-31

    One of the frontiers of today`s nuclear science is the ``journey to the limits``: of atomic charge and nuclear mass, of neutron-to-proton ratio, and of angular momentum. The tour to the limits is not only a quest for new, exciting phenomena but the new data are expected, as well, to bring qualitatively new information about the fundamental properties of the nucleonic many-body system, the nature of the nuclear interaction, and nucleonic correlations at various energy-distance scales. In this talk, current developments in nuclear structure at the limits are discussed from a theoretical perspective.

  1. Nuclear Physics of Neutron Stars

    E-print Network

    J. Piekarewicz

    2009-01-28

    Understanding the equation of state (EOS) of cold nuclear matter, namely, the relation between the pressure and energy density, is a central goal of nuclear physics that cuts across a variety of disciplines. Indeed, the limits of nuclear existence, the collision of heavy ions, the structure of neutron stars, and the dynamics of core-collapse supernova, all depend critically on the equation of state of hadronic matter. In this contribution I will concentrate on the special role that nuclear physics plays in constraining the EOS of cold baryonic matter and its impact on the properties of neutron stars.

  2. Nuclear Structure at the Limits

    SciTech Connect

    Nazarewicz, W.

    1998-01-12

    One of the frontiers of today?s nuclear science is the ?journey to the limits? of atomic charge and nuclear mass, of neutron-to-proton ratio, and of angular momentum. The tour to the limits is not only a quest for new, exciting phenomena, but the new data are expected, as well, to bring qualitatively new information about the fundamental properties of the nucleonic many-body system, the nature of the nuclear interaction, and nucleonic correlations at various energy-distance scales. In this series of lectures, current developments in nuclear structure at the limits are discussed from a theoretical perspective, mainly concentrating on medium-mass and heavy nuclei.

  3. Nuclear deterrence in South Asia

    SciTech Connect

    Hagerty, D.T. [Univ. of Illinois, Urbana-Champaign, IL (United States)

    1995-12-31

    Did India and Pakistan nearly fight a nuclear war in 1990? In a provocative 1993 article, Seymour M. Hersh claims that they did. During a crisis with India over the rapidly escalating insurgency in Kashmir, Pakistan openly deployed its main armored tank units along the Indian border and, in secret, placed its nuclear-weapons arsenal on alert. As a result, the Bush Administration became convinced that the world was on the edge of a nuclear exchange between Pakistan and India. Universe of cases is admittedly small, but my argument is supported by recent research indicating that preemptive attacks of any kind have been historically rarer than conventionally believed. The nuclear era has seen two instances of preventive attacks against nuclear facilities-the 1981 Israeli bombing of Iraq`s Osirak nuclear facility and the allied coalition`s 1991 air war against Iraq-but both of these actions were taken without fear of nuclear reprisal. In situations where nuclear retaliation has been a possibility, no leader of nuclear weapon state has chosen to launch a preemptive first strike. 97 refs.

  4. The Potential for a Nuclear Renaissance: The Development of Nuclear Power Under Climate Change Mitigation Policies

    E-print Network

    The Potential for a Nuclear Renaissance: The Development of Nuclear Power Under Climate Change and Policy Program #12;#12;The Potential for a Nuclear Renaissance: The Development of Nuclear Power Under

  5. Nuclear-Pumped Lasers. [efficient conversion of energy liberated in nuclear reactions to coherent radiation

    NASA Technical Reports Server (NTRS)

    1979-01-01

    The state of the art in nuclear pumped lasers is reviewed. Nuclear pumped laser modeling, nuclear volume and foil excitation of laser plasmas, proton beam simulations, nuclear flashlamp excitation, and reactor laser systems studies are covered.

  6. Low Energy Nuclear Reactions: 2007 Update

    Microsoft Academic Search

    Steven B. Krivit

    2007-01-01

    This paper presents an overview of low energy nuclear reactions, a subset of the field of condensed matter nuclear science. Condensed matter nuclear science studies nuclear effects in and\\/or on condensed matter, including low energy nuclear reactions, an entirely new branch of science that gained widespread attention and notoriety beginning in 1989 with the announcement of a previously unrecognized source

  7. Nuclear Power Trends Energy Economics and Sustainability

    E-print Network

    Nuclear Power Trends Energy Economics and Sustainability L. H. Tsoukalas Purdue University Nuclear;National Research Council of Greece, May 8, 2008 Outline · The Problem · Nuclear Energy Trends · Energy Economics · Life Cycle Analysis · Nuclear Sustainability · Nuclear Energy in Greece? #12;National Research

  8. 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.

  9. Nuclear Pakistan and nuclear India: Stable deterrent or proliferation challenge

    Microsoft Academic Search

    George H. Quester

    1992-01-01

    Nuclear proliferation, a security issue which has transcended the cold war, has been, and is, particularly troublesome in South Asia. There, India and Pakistan, neighbors with unresolved disputes since they were granted independence at the end of World War II, are believed to have nuclear weapons (although the leaders of both nations deny it) and are intermittently engaged in conflict

  10. Application of Nuclear Track Detectors in Astroparticle and Nuclear Physics

    Microsoft Academic Search

    S. Cecchini; S. Balestra; M. Cozzi; G. Giacomelli; M. Giorgini; S. Manzoor; E. Medinaceli; L. Patrizii; V. Popa; G. Sirri; M. Spurio; V. Togo; T. Chiarusi

    2006-01-01

    After a brief presentation of the technical methods employed and the calibrations performed on different Nuclear Track Detectors (NTDs), the results obtained by their use in different fields of astroparticle and nuclear physics are presented. In particular the results of searches for magnetic monopoles, nuclearites and other exotica in the cosmic radiation carried out by the Bologna Group. Also an

  11. Nuclear Science Research Facilities Nuclear Science User Guide

    E-print Network

    Few Body Nuclear Reactions 28 4FP15L Dosimetry / Detector Development 29 4FP30L ICE House- Electronics spallation neutron sources: the Manuel Lujan Jr. Neutron Scattering Center (Target-1) and the Weapons Neutron-milli electron volts to hundreds of million electron volts--that are used for both material science and nuclear

  12. Nuclear cross sections, nuclear structure and stellar nucleosynthesis

    Microsoft Academic Search

    F.-K. Thielemann; D. Argast; F. Brachwitz; W. R. Hix; P. Höflich; M. Liebendörfer; G. Martinez-Pinedo; A. Mezzacappa; I. Panov; T. Rauscher

    2003-01-01

    The role of nuclear reactions (strong, weak and electromagnetic) and nuclear structure effects are discussed in a number of stellar applications. We address fusion cross sections in stellar evolution, neutrino-induced reactions in type II supernovae, electron captures in type Ia supernovae and fission in the r-process. All of this is discussed in the context of nucleosynthesis products and their role

  13. Nuclear Energy, Nuclear Weapons Proliferation, and the Arms Race.

    ERIC Educational Resources Information Center

    Hollander, Jack, Ed.

    A symposium was organized to reexamine the realities of vertical proliferation between the United States and the Soviet Union and to place into perspective the horizontal proliferation of nuclear weapons throughout the world, including the possible role of commercial nuclear power in facilitating proliferation. The four invited symposium…

  14. Nuclear phenomena in low-energy nuclear reaction research.

    PubMed

    Krivit, Steven B

    2013-09-01

    This is a comment on Storms E (2010) Status of Cold Fusion, Naturwissenschaften 97:861-881. This comment provides the following remarks to other nuclear phenomena observed in low-energy nuclear reactions aside from helium-4 make significant contributions to the overall energy balance; and normal hydrogen, not just heavy hydrogen, produces excess heat. PMID:23949247

  15. Nuclear Power Plant Module, NPP-1: Nuclear Power Cost Analysis.

    ERIC Educational Resources Information Center

    Whitelaw, Robert L.

    The purpose of the Nuclear Power Plant Modules, NPP-1, is to determine the total cost of electricity from a nuclear power plant in terms of all the components contributing to cost. The plan of analysis is in five parts: (1) general formulation of the cost equation; (2) capital cost and fixed charges thereon; (3) operational cost for labor,…

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

    E-print Network

    irradiation effects on materials Harnessing Fusion Power · Fusion power extraction and tritium breedingFUSION NUCLEAR SCIENCE PROGRAM & SUPPORTING FUSION NUCLEAR SCIENCE FACILITY (FNSF): UPDATE and plasma contamination are required. 4. Harnessing Fusion Power Fusion energy from deuterium-tritium (D

  17. 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.

  18. Nuclear power, nuclear weapons, and international stability. [U. S. foregoing nuclear power expansion possibly more destabilizing

    Microsoft Academic Search

    D. J. Rose; R. K. Lester

    1978-01-01

    The National Energy Plan included as one of its key components a revision of this country's long-standing policy on the development of civilian nuclear power. The proposed change, which would have the effect of curtailing certain aspects of the U.S. nuclear-power program and of placing new restrictions on the export of nuclear materials, equipment, and services, was based explicitly on

  19. Nuclear effects hardened shelters

    NASA Astrophysics Data System (ADS)

    Lindke, Paul

    1990-11-01

    The Houston Fearless 76 Government Projects Group has been actively engaged for more than twenty-five years as a sub-contractor and currently as a prime contractor in the design, manufacture, repair and logistics support of custom mobile ground stations and their equipment accommodations. Other associated products include environmental control units (ECU's), mobilizers for shelters and a variety of mobile power generation units (MPU's). Since 1984, Houston Fearless 76 has designed and manufactured four 8' x 8' x 22' nuclear hardened mobile shelters. These shelters were designed to contain electronic data processing/reduction equipment. One shelter is currently being operated by the Air Force as a Defense Intelligence Agency (DIA) approved and certified Special Corrpartmented Information Facility (SCIF). During the development and manufacturing process of the shelters, we received continual technical assistance and design concept evaluations from Science Applications International Corporation (SAIC) Operations Analysis and Logistics Engineering Division and the Nondestructive Inspection Lab at McClellan AFB. SAIC was originally employed by the Air Force to design the nuclear hardening specifications applied to these shelters. The specific levels of hardening to which the shelters were designed are classified and will not be mentioned during this presentation.

  20. Multinational underground nuclear parks

    SciTech Connect

    Myers, C.W. [Nuclear Engineering and Nonproliferation Division, Los Alamos National Laboratory, MS F650, Los Alamos, NM 87544 (United States); Giraud, K.M. [Wolf Creek Nuclear Operating Corporation, 1550 Oxen Lane NE, P.O. Box 411, Burlington, KS 66839-0411 (United States)

    2013-07-01

    Newcomer countries expected to develop new nuclear power programs by 2030 are being encouraged by the International Atomic Energy Agency to explore the use of shared facilities for spent fuel storage and geologic disposal. Multinational underground nuclear parks (M-UNPs) are an option for sharing such facilities. Newcomer countries with suitable bedrock conditions could volunteer to host M-UNPs. M-UNPs would include back-end fuel cycle facilities, in open or closed fuel cycle configurations, with sufficient capacity to enable M-UNP host countries to provide for-fee waste management services to partner countries, and to manage waste from the M-UNP power reactors. M-UNP potential advantages include: the option for decades of spent fuel storage; fuel-cycle policy flexibility; increased proliferation resistance; high margin of physical security against attack; and high margin of containment capability in the event of beyond-design-basis accidents, thereby reducing the risk of Fukushima-like radiological contamination of surface lands. A hypothetical M-UNP in crystalline rock with facilities for small modular reactors, spent fuel storage, reprocessing, and geologic disposal is described using a room-and-pillar reference-design cavern. Underground construction cost is judged tractable through use of modern excavation technology and careful site selection. (authors)