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1

Caracterizacion de las pegmatitas de Loma Venturilla mediante el uso de tecnicas nucleares. (Characterization of Loma Venturilla pegmatites using nuclear techniques).  

National Technical Information Service (NTIS)

Neutron Activation Analysis (NAA) and gamma spectrometry Analysis (GEA) were used for the determination of 21 trace elements in geological samples of pegmatites of Loma Venturilla area. Both methods permitted, in general, the determination of K, Cr, Co, S...

B. Pena Fortes G. Caopte Rodriguez R. Toujague La Rosa K. Sukar Satraputa

1996-01-01

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

...NUCLEAR WASTE TECHNICAL REVIEW BOARD Board Meeting...Las Vegas, NV, the U.S. Nuclear Waste Technical Review Board Will Meet To Discuss...Nuclear Fuel and High-Level Radioactive Waste Pursuant to its authority under...

2011-01-20

3

Implementacion de la tecnica de difraccion de neutrones en el Centro Nuclear del Instituto Nacional de Investigaciones Nucleares para el estudio de materiales. (Implementation of neutron diffraction technique at Nuclear Center of National Institute of Nuclear Research for study of materials).  

National Technical Information Service (NTIS)

The Neutron Diffraction technique is a helpful tool for the study of materials. The purpose was to verify that such technique works with the Neutron Diffractometer of National Institute of Nuclear Research. The scope, is to study crystalline materials by ...

L. R. Macias Betanzos

1993-01-01

4

International High Level Radioactive Nuclear Waste Management Conference. Held in Las Vegas in April 1990.  

National Technical Information Service (NTIS)

The US Department of Energy (DOE) and the Nuclear Energy Agency of the Organization for Economic Cooperation and Development/Nuclear Energy Agency (OECD/DEA) began to act on their recognition of the importance of education in nuclear literacy, specificall...

1998-01-01

5

INDAGINE FEM PROBABILISTICA SULL'AFFIDABILITÀ DELLA TECNICA ELASTOGRAFICA PER IL RICONOSCIMENTO DI TUMORI  

Microsoft Academic Search

Sommario Tra gli strumenti a disposizione per la diagnosi precoce del tumore al seno la tecnica elastografica ad ultrasuoni vanta numerosi vantaggi, quali: la non-invasività della misura, l'assenza di effetti ionizzanti, l'ottima tollerabilità da parte dei pazienti, l'ampia diffusione delle apparecchiature ecografiche. Questa procedura diagnostica risulta però fortemente condizionata dalla presenza di molti fattori soggettivi. In questo studio sono stati

S. Celia; P. Forte; F. Faita

6

Risk-induced social impacts: The effects of the proposed nuclear waste repository on residents of the Las Vegas metropolitan area  

Microsoft Academic Search

This report examines important and major impacts of the proposed high-level nuclear waste repository on Las Vegas metropolitan residents. The data utilized in the report consist of interview data collected in the 1988, Urban Risk Survey and data for Clark County residents collected as part of the 1989 Nevada Telephone Survey. The use of two different data sets which were

Alvin H. Mushkatel; K. David Pijawka; Marilyn Dantico

1990-01-01

7

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

Microsoft Academic Search

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

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

8

Las tecnicas literarias de Othon Castillo en "La cruel naturaleza" (The Literary Techniques Used by Othon Castillo in "Cruel Native")  

ERIC Educational Resources Information Center

|Discusses the style of the Ecuadorian novelist Othon Castillo and the literary techniques used in his novel "Cruel Nature." The novel describes the cities of Quito and Santa Ana in Ecuador and their inhabitants. (Text is in Spanish.) (TL)|

Allen, Richard F.

1975-01-01

9

La malattia ischemica del miocardio oltre la stenosi coronarica: valore fisiopatologico e clinico della scintigrafia miocardica di perfusione con tecnica gated-SPECT  

Microsoft Academic Search

Lo studio angiografico dei vasi coronarici epicardici è la più accurata tecnica per valutare l'anatomia coronarica. Tuttavia, è sempre più evidente che la prognosi del paziente non dipende solo dal flusso angiografico nelle arterie epicardiche, ma anche da eventi che si realizzano a valle della stenosi coronarica, che condizionano tanto la fisiopatologia dell'ischemia miocardica quanto l'outcome clinico. Infatti, lo squilibrio

M. Spadafora; L. Mansi

2006-01-01

10

Nuclear  

NSDL National Science Digital Library

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

Project, Iowa P.

2004-01-01

11

Current Target Industry Analysis: Las Vegas Metropolitan Area.  

National Technical Information Service (NTIS)

This is the second of three reports dealing with the Las Vegas MSA's economic development potential in support of an overall effort to prepare an environmental impact statement for the proposed underground nuclear waste storage facility at Yucca Mountain....

M. R. Boyle

1988-01-01

12

ENTRENAMIENTO DE LAS HABILIDADES SOCIALES  

Microsoft Academic Search

No es ningún secreto que una de las partes más importantes de nuestra vida son las relaciones sociales. En cada una de las cosas que hacemos hay un componente de relaciones con los demás que determina en gran medida (facilitando o entorpeciendo) nuestra búsqueda de la felicidad. Es creencia común que las simpatía y el atractivo social de algunas personas

Nuria María Palanco López

2009-01-01

13

Las Vegas Strip History  

NSDL National Science Digital Library

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.

Dematteo, Deanna.

14

History: Las Vegas  

NSDL National Science Digital Library

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

15

Las paradas repentinas y las estrategias cambiarias en América Latina  

Microsoft Academic Search

(Disponible en idioma inglés únicamente) Un análisis de varios estudios de casos específicos en la región sugiere que la capacidad de sostener una política monetaria creíble depende del grado de vulnerabilidad de los países a las repercusiones de las paradas repentinas. A este respecto, hay cuatro aspectos de vital importancia que atenúan esas repercusiones. La apertura de la economía de

Arturo Galindo; Alejandro Izquierdo

2003-01-01

16

LAS and its disciplinary ambitions  

Microsoft Academic Search

Since the late 1980s and early 1990s, Language and Academic Skills (LAS) practitioners have been vitally interested in legitimating LAS knowledge, practices, and academic identity, primarily to counter institutional marginalisation and institutional misperceptions of who we are and what we do. In the quest for legitimation we have become involved in the process of organising our professional lives (Becher, 1989,

Stephen Milnes

17

Geology of the Gualan and Southern Sierra de las Minas Quadrangles, Guatemala  

Microsoft Academic Search

The Gualan and Sierra de las Minas quadrangles straddle the Motagua Valley fault zone, a major southerly convex fault zone of Nuclear Central America, and the active transform boundary between the North American and Caribbean plates. Two distinctly different pre-Mesozoic metamorphic basement complexes are exposed in the area. The Chuacus Group crops out north of the Motagua Valley. The Las

K. R. Johnson

1984-01-01

18

Apropiación y masificación de las tecnologías de la información y las comunicaciones (TIC) en las Mipyme  

Microsoft Academic Search

Innumerables son los beneficios que el uso de las tecnologías de la información y las comunicaciones (TIC) deriva en los procesos empresariales siendo de mayor relevancia el incremento en ventas, la disminución de costos totales, mejora en satisfacción de clientes y proveedores, mayor eficiencia, optimización de la educación del personal, mejoramiento de la comunicación con stakeholders y presencia global. Sin

GERMAN ELIECER RODRIGUEZ MELO

2011-01-01

19

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...

20

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

Microsoft Academic Search

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

2004-01-01

21

Aplicacion de la tecnica de retrodispersion de los rayos gamma para determinar la cuantia del acero. (Application of the gamma rays backscattering for determining the quantity of steel).  

National Technical Information Service (NTIS)

This work tries to purpose a methodology based on the nuclear technology available in the country, for measuring the position and diameter of the reinforcing rods placed in reinforced concrete structures. The technique of gamma backscattering that utilize...

B. F. Huapaya

1996-01-01

22

Las perspectivas de las zonas económicas especiales de exportación  

Microsoft Academic Search

Con base en la actual globalización mundial de la economía y de la interdependencia comercial, tecnológica y financiera de los países y de la experiencia de la apertura económica de China, el gobierno colombiano propone la creación de las Zonas Económicas Especiales de Exportación, ZEEE, en los departamentos de Nariño, Valle del Cauca, Norte de Santander y Cesar para aumentar

Alexander Arévalo Luna; Paula Lucia Arevalo M

2002-01-01

23

Síntomas neurológicos de las enfermedades reumáticas  

Microsoft Academic Search

Resumen Una de las más importantes pero la menos co- mún de las manifestaciones de enfermedad autoinmune la constituye la vasculitis, la cual mo- difica la historia de la enfermedad, dependiendo del órgano afectado. Esta revisión incluye las más importantes manifestaciones y complicaciones de los sistemas nerviosos central y periférico que se desarrollan por vasculitis en las enfermedades reumáticas, ya

2007-01-01

24

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

SciTech Connect

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

Rodgers, A

2008-01-16

25

LAS HABILIDADES DE INTERACCIÓN SOCIAL Y LA PREPARACIÓN DE LAS FAMILIAS DE LOS NIÑOS Y DE LAS NIÑAS CON DIAGNÓSTICO PRESUNTIVO DE RETRASO MENTAL DESDE LAS PRIMERAS EDADES  

Microsoft Academic Search

Las habilidades sociales son un numeroso y variado conjunto de conductas que se ponen en juego en situaciones de interacción social, es decir, en situaciones en las que hay que relacionarse con otras personas. La Interacción social se refiere a las conductas necesarias para interactuar y relacionarse con los iguales y con los adultos de forma efectiva y mutuamente satisfactoria.

Elizabeth Gómez Núñez; Olga Lidia Núñez Rodriguez; Nemesio Jiménez Cepero; Ángel Luis Gómez Cardoso

2011-01-01

26

Nuclear weapons and nuclear war  

Microsoft Academic Search

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

C. Cassel; M. McCally; H. Abraham

1984-01-01

27

Nuclear threats  

Microsoft Academic Search

Although significant nuclear disarmament is on the cards, the existence of nuclear weapons will continue to threaten national and international security. The main threats created by nuclear weapons are discussed in detail. Future nuclear arsenals will be much smaller than they were, but perceptions will still grow that an effective nuclear first?strike may be possible and perhaps even desirable. Such

Frank Barnaby

1992-01-01

28

Nuclear Medicine.  

ERIC Educational Resources Information Center

|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)|

Badawi, Ramsey D.

2001-01-01

29

Nuclear Fission  

NSDL National Science Digital Library

Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor! (Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.)

Simulations, Phet I.; Adams, Wendy; Blanco, John; Lemaster, Ron; Mckagan, Sam; Perkins, Kathy

2004-07-01

30

Nuclear weapons and nuclear war  

SciTech Connect

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

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

1984-01-01

31

Nuclear Theory - Nuclear Power  

NASA Astrophysics Data System (ADS)

The results from modern nuclear theory are accurate and reliable enough to be used for practical applications, in particular for scattering that involves few-nucleon systems of importance to nuclear power. Using well-established nucleon-nucleon (NN) interactions that fit well the NN scattering data, and the AGS form of the three-body theory, we have performed precise calculations of low-energy neutron-deuteron (n+d) scattering. We show that three-nucleon force effects that have impact on the low-energy vector analyzing powers have no practical effects on the angular distribution of the n+d cross-section. There appear to be problems for this scattering in the evaluated nuclear data file (ENDF) libraries, at the incident neutron energies less than 3.2 MeV. Supporting experimental data in this energy region are rather old (>25 years), sparse and often inconsistent. Our three-body results at low energies, 50 keV to 10.0 MeV, are compared to the ENDF/B-VII.0 and JENDL (Japanese Evaluated Nuclear Data Library) -3.3 evaluated angular distributions. The impact of these results on the calculated reactivity for various critical systems involving heavy water is shown.

Svenne, J. P.; Canton, L.; Kozier, K. S.

2008-01-01

32

Nuclear Power  

NSDL National Science Digital Library

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.

Stern, David

2004-11-28

33

Nuclear privatization  

Microsoft Academic Search

The United Kingdom government announced in May 1995 plans to privatize the country`s two nuclear generating companies, Nuclear Electric and Scottish Nuclear. Under the plan, the two companies will become operating divisions of a unified holding company, to be called British Electric, with headquarters in Scotland. Britain`s nuclear plants were left out of the initial privatization in 1989 because the

Jeffs

1995-01-01

34

ROL DE LAS ALTERNATIVAS EN LA NEGOCIACIÓN  

Microsoft Academic Search

Teniendo en cuenta que el mundo está atravesando una veloz y profunda transformación; es importante considerar que para poder afrontar tales cambios la negociación racional, inteligente y profesionalizada constituye un elemento imprescindible para la sociedad, donde deben asumirse métodos adecuados para la administración y solución de conflictos. Las personas, los gobiernos y las organizaciones han tomado conciencia y madurado de

Marilyn López Molina; Zoila Banguela Villavicencio

2009-01-01

35

Las infecciones emergentes transmitidas por garrapatas  

Microsoft Academic Search

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

Ingomar Mutz

2009-01-01

36

Variación temporal de las constantes fundamentales  

Microsoft Academic Search

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

S. J. Landau; H. Vucetich

1999-01-01

37

Conservación y Acondicionamiento de las Raíces Frescas  

Microsoft Academic Search

La yuca (Manihot esculenta) es un alimento importante porque es fuente económica de calorías, especialmente para las gentes de pocos recursos económicos que habitan las regiones tropicales del mundo. Por tal razón, los científicos han hecho grandes esfuerzos para desarrollar variedades de mayor rendimiento y para diseñar tecnologías apropiadas de bajos insumos que mejoren la producción del cultivo. La aplicación

Teresa Sánchez; Lisímaco Alonso

38

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

Microsoft Academic Search

In May and September 2002, seismic refraction data were acquired in the Las Vegas basin. Located in the southern Basin and Range province, the cities of Las Vegas, North Las Vegas, and Henderson sit atop a fault-bounded basin with a depth of up to 5 km and basin dimensions of roughly 60 km wide (east-west) by 50 km in length

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

2002-01-01

39

UNA ESTIMACIÓN DE LAS NECESIDADES DE GASTO DE LAS COMUNIDADES AUTÓNOMAS  

Microsoft Academic Search

El objetivo de este trabajo consiste en realizar un cálculo de las necesidades de gasto relativas de las Comunidades Autónomas. El método propuesto en el trabajo se basa en la descomposición del índice de necesidades de gasto en una suma de los índices de necesidades de las distintas funciones de gasto, ponderados según su peso en un “presupuesto de gasto

Antoni Castells Oliveres

2001-01-01

40

Nuclear physics  

SciTech Connect

Questions facing nuclear physics today include the many dynamic forces that cannot be understood with elementary particles alone. New simple modes of nuclear excitation have become known, along with some completely new phenomena, such as vibration. This volume examines advances in nuclear physics, the impacts of nuclear physics on other disciplines and society, and current frontiers of nuclear research. Recommendations cover new accelerator plans, support of instrumentation, and the need for increased support of nuclear theory. In addition, the report notes that there is a projected shortage of new physicists and an acute current shortage of stable isotopes for medical and research purposes.

Not Available

1986-01-01

41

Atmospheric Radioxenon Measurements in North Las Vegas, NV  

SciTech Connect

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.

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

42

Nuclear Chemistry.  

ERIC Educational Resources Information Center

Provides a brief review of the latest developments in nuclear chemistry. Nuclear research today is directed toward increased activity in radiopharmaceuticals and formation of new isotopes by high-energy, heavy-ion collisions. (Author/BB)

Chemical and Engineering News, 1979

1979-01-01

43

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 ...

44

Nuclear Chemistry.  

ERIC Educational Resources Information Center

|Provides a brief review of the latest developments in nuclear chemistry. Nuclear research today is directed toward increased activity in radiopharmaceuticals and formation of new isotopes by high-energy, heavy-ion collisions. (Author/BB)|

Chemical and Engineering News, 1979

1979-01-01

45

Nuclear Winter.  

ERIC Educational Resources Information Center

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

Ehrlich, Anne

1984-01-01

46

Nuclear Receptors  

NSDL National Science Digital Library

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

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

2005-05-31

47

Nuclear Safety  

SciTech Connect

This review journal covers significant developments in the field of nuclear safety. Its scope includes the analysis and control of hazards associated with nuclear energy, operations involving fissionable materials, and the products of nuclear fission and their effects on the environment. Primary emphasis is on safety in reactor design, construction, and operation; however, the safety aspects of the entire fuel cycle, including fuel fabrication, spent-fuel processing, nuclear waste disposal, handling of radioisotopes, and environmental effects of these operations, are also treated.

Not Available

1992-01-01

48

Nuclear Fuels.  

ERIC Educational Resources Information Center

|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)|

Nash, J. Thomas

1983-01-01

49

Nuclear winter  

Microsoft Academic Search

The 13 speakers at the October 1983 Conference on the World After Nuclear War each contributed specialized knowledge to the climatic and biological effects of nuclear war. The author highlights the findings of the TTAPS (named for its authors) study and confirmation by Soviet scientists on the nuclear winter. Atmospheric consequences would come from debris blocking sunlight and creating conditions

Ehrlich

1984-01-01

50

Nuclear hostages  

Microsoft Academic Search

Classical physics since Roentgen's discovery of X-rays led quickly to work on atomic structure and the Nuclear Age. The author traces the history of decisions to pursue nuclear fission, the organization of the Manhattan Project, the compromises of the 1963 test ban treaty, and the dilemma of nuclear weapons development and deployment that now hold mankind hostage. He reviews the

OKeefe

1983-01-01

51

Nuclear Fuels.  

ERIC Educational Resources Information Center

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)

Nash, J. Thomas

1983-01-01

52

Haga un mantenimiento adecuado de las cortadoras ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Las cortadoras de embutidos que se usan generalmente para cortar carnes rojas, quesos, frutas y verduras en los establecimientos minoristas y de ... More results from www.fda.gov/food/guidanceregulation/retailfoodprotection

53

Degradation analysis of linear alkylbenzene sulfonates (LAS)  

SciTech Connect

The degradation of mixtures of sodium salts of butyl-, decyl-, and dodecylbenzene sulfonate was studied as influenced by shaking for seven days, by the addition of soil and sand, and by changes in pH. LAS were analyzed by measurement of the absorbance at 223 nm or by reaction with methylene blue and measurement of the absorbance at 652 nm. Slurries containing 48.0 g/l. and 6.6 g/l. of LAS degraded at room temperature, which suggested a simple chemical decomposition of the LAS to simpler products since these concentrations prohibited microbial activity. None of the treatments significantly aided the degradation process, except the addition of soil, i.e., the addition of a source of microorganisms. Contrary to the LAS slurry data, the dodecylbenzene sulfonate solution did not degrade even after aging for 30 days; however, it degraded completely after 7 days on the addition of a glucose and nutrient solution.

Sandhu, S.S.; Warren, W.J.; Reed, A.

1980-01-01

54

Are LAS-codes a miracle ?  

Microsoft Academic Search

Large area synchronized (LAS)-CDMA has been proposed to enhance third generation and fourth generation wireless systems. LAS-CDMA is based on multiple access codes that result from a combination of LA codes and pulse compressing LS codes. To reduce multiple access interference and intersymbol interference in time dispersive channels, LS codes have perfect auto-correlation and cross-correlation functions in a certain vicinity

S. Stanczak; H. Boche; M. Haardt

2001-01-01

55

Nuclear Safety  

SciTech Connect

Nuclear Safety is a review journal that covers significant developments in the field of nuclear safety. Its scope includes the analysis and control of hazards associated with nuclear energy, operations involving fissionable materials, and the products of nuclear fission and their effects on the environment. Primary emphasis is on safety in reactor design, construction, and operation; however, the safety aspects of the entire fuel cycle, including fuel fabrication, spent-fuel processing, nuclear waste disposal, handling of radioisotopes, and environmental effects of these operations, are also treated.

Silver, E.G. (ed.)

1990-01-01

56

Nuclear critics and nuclear economics  

Microsoft Academic Search

The ongoing nuclear debate is given to attacks on the economics of nuclear power that ignore the actual performance of operating plants. Today, almost every existing nuclear power plant has provided significant savings to the customers it supplies. (The exceptions to this, while important, are not being hidden. Instead, the problem plants, Palisades and Browns Ferry in the main, as

Rossin

1978-01-01

57

Nuclear Halos  

SciTech Connect

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

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

2010-07-27

58

Nuclear physics  

SciTech Connect

This book is a simple and direct introduction to the tools of modern nuclear physics, both experimental and mathematical. Emphasizes physical intuition and illuminating analogies, rather than formal mathematics. Topics covered include particle accelerators, radioactive series, types of nuclear reactions, detection of the neutrino, nuclear isomerism, binding energy of nuclei, fission chain reactions, and predictions of the shell model. Each chapter contains problems and illustrative examples. Pre-requisites are calculus and elementary vector analysis.

Patel, S.B. (Ramnarain Ruia Coll., Bombay (India))

1991-01-01

59

Nuclear physics  

SciTech Connect

A simple and direct introduction to the tools of modern nuclear physics, both experimental and mathematical. Emphasizes physical intuition and illuminating analogies, rather than formal mathematics. Topics covered include particle accelerators, radioactive series, types of nuclear reactions, detection of the neutrino, nuclear isomerism, binding energy of nuclei, fission chain reactions, and predictions of the shell model. Each chapter contains problems and illustrative examples. Prerequisites are calculus and elementary vector analysis.

Patel, S.B.

1988-01-01

60

Nuclear APC  

PubMed Central

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

Neufeld, Kristi L.

2011-01-01

61

Nuclear Fission  

Microsoft Academic Search

The potential role of nuclear fission to meet increased future energy demand while reducing greenhouse gas emissions and controlling nuclear proliferation is assessed. The World Energy Council projection for an environmentally driven future is used, which projects deployment of nearly 3 TW(e) of nuclear generation by 2100, with concurrent reduction of global CO2 emissions to one-third of present levels. We

ERICH SCHNEIDER; WILLIAM C. SAILOR

2006-01-01

62

Nuclear astrophysics  

SciTech Connect

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.

Haxton, W.C.

1992-01-01

63

Nuclear astrophysics  

SciTech Connect

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.

Haxton, W.C.

1992-12-31

64

LAS INSTITUCIONES CULTURALES Y SU ACCIONAR EN LAS TRADICIONES MUSICALES. VISTO DESDE UNA PERSPECTIVA SOCIOLÓGICA  

Microsoft Academic Search

En Cuba, la preservación del patrimonio intangible, es decir, de la cultura popular y tradicional, las tradiciones orales, musicales, danzarías, etc., tienen una gran importancia en la vida de nuestras comunidades, particularmente en las zonas rurales. Para una mejor comprensión de la problemática los estudios se centran en la labor de la institución cultural y sus influencias en el desarrollo

Jaime Tamayo Rodríguez; Eyedelkis Medina García; Raida Rodríguez Noa

2012-01-01

65

Calendario sobre el Tiempo y las Estaciones  

NSDL National Science Digital Library

Este Web site contiene links a 12 calendarios (12 meses). Diciembre contiene siete actividades que combinan matemáticas con el tiempo y las estaciones. Por ejemplo, los chicos investigan a qué hora se pone el sol hoy, evalúan su día, o calculan cuántos días quedan para las vacaciones escolares. Se puede utilizar como actividad independiente, como actividad para hacer en casa, o como actividad de grupo. Disponible para descargar en formato pdf y en Inglés.

Terc

2010-01-01

66

Las Vegas bets on a sure winner  

SciTech Connect

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)

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

1980-09-01

67

Nuclear war, nuclear proliferation, and their consequences  

Microsoft Academic Search

This book presents papers on nuclear weapons proliferation. Topics considered include the Nuclear Non-Proliferation Treaty and its future, the spread of nuclear weapons among nations, the link between horizontal and vertical proliferation, national security, nuclear disarmament, the impact of nuclear weapons on Third World regional conflicts, the global effects of a nuclear war, medical effects on human populations, the nuclear

Aga Khan

1986-01-01

68

Nuclear accidents  

NSDL National Science Digital Library

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.

Project, Iowa P.

2004-01-01

69

Nuclear hostages  

SciTech Connect

Classical physics since Roentgen's discovery of X-rays led quickly to work on atomic structure and the Nuclear Age. The author traces the history of decisions to pursue nuclear fission, the organization of the Manhattan Project, the compromises of the 1963 test ban treaty, and the dilemma of nuclear weapons development and deployment that now hold mankind hostage. He reviews the rationale for limited nuclear war, first strike, massive retaliation, non-proliferation, and the Strategic Arms Limitation Talks (SALT) treaties. He argues that the concepts of mobile MX weapons, fratricide, and population dispersal for civil defense are unworkable, suggesting a program of unilaterally withdrawing tactical nuclear weapons from Europe and strengthening intelligence and law-enforcement powers to withstand terrorist activity. Economic cooperation and political reconciliation may take a generation to achieve, but should be our national goal.

O'Keefe, B.J.

1983-01-01

70

Nuclear privatization  

SciTech Connect

The United Kingdom government announced in May 1995 plans to privatize the country`s two nuclear generating companies, Nuclear Electric and Scottish Nuclear. Under the plan, the two companies will become operating divisions of a unified holding company, to be called British Electric, with headquarters in Scotland. Britain`s nuclear plants were left out of the initial privatization in 1989 because the government believed the financial community would be unwilling to accept the open-ended liability of decommissioning the original nine stations based on the Magnox gas-cooled reactor. Six years later, the government has found a way around this by retaining these power stations in state ownership, leaving the new nuclear company with the eight Advanced Gas-cooled Reactor (AGR) stations and the recently completed Sizewell B PWR stations. The operating Magnox stations are to be transferred to BNFL, which operates two Magnox stations of their own at Calder Hall and Chapelcross.

Jeffs, E.

1995-11-01

71

Alcoholism and Drug Abuse in Las Juntas  

Microsoft Academic Search

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

Suzanne Wasserman

72

Optimal Speedup of Las Vegas Algorithms  

Microsoft Academic Search

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

Michael Luby; Alistair Sinclair; David Zuckerman

1993-01-01

73

Evaluating Las Vegas Algorithms: Pitfalls and Remedies  

Microsoft Academic Search

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

Holger H. Hoos; Thomas Stützle

1998-01-01

74

Las Brigadas Internacionales: una aproximación historiográfica  

Microsoft Academic Search

El artículo consta de dos apartados. Al primero le hemos dado un enfoque cronològico, distinguiendo tres etapas: a) las obras publicadas por ambos bandos con finalidad propagandistica durante la Guerra Civil; b) de los anos cuarenta hasta los ochenta, en que observamos que se camina desde la vision mítica hasta los primeros estúdios críticos; c) a partir de 1996, con

Manuel Requena Gallego

2004-01-01

75

Nuclear winter or nuclear fall?  

Microsoft Academic Search

Climate is universal. If a major modern nuclear war (i.e., with a large number of small-yield weapons) were to happen, it is not even necessary to have a specific part of the world directly involved for there to be cause to worry about the consequences for its inhabitants and their future. Indeed, smoke from fires ignited by the nuclear explosions

André Berger

1986-01-01

76

(Nuclear theory). [Research in nuclear physics  

SciTech Connect

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)

Haxton, W.

1990-01-01

77

Nuclear battlefields  

SciTech Connect

This book provides complete data on the nuclear operations and research facilities in the U.S.A., the U.S.S.R., France, China and the U.K. It describes detailed estimates on the U.S.S.R.'s nuclear stockpile for over 500 locations. It shows how non-nuclear countries cooperate with the world-wide war machine. And it maps the U.S. nuclear facilities from Little America, WY, and Charleston, SC, to the battleships patroling the world's oceans and subs stalking under the sea. The data were gathered from unclassified sources through the Freedom of Information Act, from data supplied to military installations, and from weapons source books. It provides guidance for policymakers, government and corporate officials.

Arkin, W.M.; Fieldhouse, R.W.

1985-01-01

78

Nuclear forces  

NASA Astrophysics Data System (ADS)

These lectures present an introduction into the theory of nuclear forces. We focus mainly on the modern approach, in which the forces between nucleons emerge from low-energy QCD via chiral effective field theory.

Machleidt, R.

2013-06-01

79

Nuclear Astrophysics  

NASA Astrophysics Data System (ADS)

I review progress that has been made in nuclear astrophysics over the past few years and summarize some of the questions that remain. Topics selected include solar neutrinos, supernovae (the explosion and associated nucleosynthesis), laboratory astrophysics, and neutron star structure.

Haxton, W. C.

2006-11-01

80

Nuclear Medicine  

Microsoft Academic Search

\\u000a In the era of multimodality imaging techniques, functional information represents a remarkable aspect in medical imaging and\\u000a nuclear medicine is the technique par excellence for functional information. One of the first applications of radioactive\\u000a substances in clinical practice is represented by renal disorders, nowadays largely investigated by nuclear medicine examinations.\\u000a Among the different physiologic processes in which kidneys take part,

Egesta Lopci; Stefano Fanti

81

Nuclear waste storage  

SciTech Connect

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

NONE

1995-07-01

82

Future Nuclear Landscape.  

National Technical Information Service (NTIS)

In important ways, the world is at a nuclear crossroads. The complex and dynamic nuclear landscape presents us with challenges along at least four axes: regional nuclear proliferation, nuclear terrorism, great power nuclear relations, and the security imp...

J. F. Reichart J. J. Caves P. I. Bernstein

2007-01-01

83

The Man and Las Tablas de Daimiel  

Microsoft Academic Search

\\u000a Human settlement in Las Tablas de Daimiel started 3600 years BP and developed into a rich culture of hunters, fishermen and\\u000a plant and animal gatherers that survived until the last third of the twentieth century. Very recently, unsustainable economic\\u000a development in the catchment resulted in strong pollution and depletion of water resources, forcing people to leave, impairing\\u000a the wetland ecological

M. Alvarez-Cobelas; S. Cirujano; A. Meco

84

Pressure leaching las cruces copper ore  

NASA Astrophysics Data System (ADS)

A hydrometallurgical process was developed for treating the Las Cruces massive sulfide-ore deposit located near Seville, Spain. A two-stage countercurrent leach process, consisting of an atmospheric leach and a pressure leach, was developed to effectively leach copper from the copper-bearing minerals and to generate a solution suitable for the subsequent solvent-extraction and copper-electrowinning operations. The results of batch and continuous miniplant tests are presented.

Berezowsky, R. M.; Xue, T.; Collins, M. J.; Makwana, M.; Barton-Jones, I.; Southgate, M.; Maclean, J. K.

1999-12-01

85

Geology of the Gualan and Southern Sierra de las Minas Quadrangles, Guatemala  

NASA Astrophysics Data System (ADS)

The Gualan and Sierra de las Minas quadrangles straddle the Motagua Valley fault zone, a major southerly convex fault zone of Nuclear Central America, and the active transform boundary between the North American and Caribbean plates. Two distinctly different pre-Mesozoic metamorphic basement complexes are exposed in the area. The Chuacus Group crops out north of the Motagua Valley. The Las Ovejas Complex crops out south of the valley. Early Tertiary rift basins received clastic deposits of the Subinal Formation. Concurrently, hornblende diorite and La Union pluton granodiorites intruded the Las Ovejas. Sinistral strike slip motion began in the Miocene and the Junquillo pull apart basin formed between the Cabanas and Jubuco faults along the south side of the valley. Las Ovejas Complex rocks between these faults were mylonitized during the faulting. Southerly derived Plio-Quaternary alluvial fans in the Junquillo basin have been offset left laterally as much as 15 to 20 km from their source areas by the Jubuco fault. A shift in the active trace of the Jubuco fault led to uplift of the western Junquillo basin during the Quaternary. The Cabanas fault is now the active plate boundary.

Johnson, K. R.

86

LAS MEDICINAS EN MI CASA Información para adultos sobre ...  

Center for Drug Evaluation (CDER)

Text Version... Dolores y fiebre son algunas de las razones más comunes por el cual las personas usan medicinas sin receta o de venta libre. ... More results from www.fda.gov/downloads/drugs/resourcesforyou

87

Geologic Studies for Seismic Hazard Assessment, Las Positas Fault Zone.  

National Technical Information Service (NTIS)

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 ...

D. W. Carpenter R. J. Clark

1982-01-01

88

Regulation of las and rhl Quorum Sensing in Pseudomonas aeruginosa  

Microsoft Academic Search

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

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

1997-01-01

89

Nuclear astrophysics  

SciTech Connect

The International Year of Astronomy 2009 (IYA2009) was declared by the 62nd General Assembly of the United Nations and was also endorsed by UNESCO. Investigations in the realms of particle and nuclear physicsmake a large contribution in the development of our ideas of the properties of the Universe. The present article discusses some problems of the evolution of the Universe, nucleosyntheses, and cosmochronology from the point of view of nuclear and particle physics. Processes occurring in the Universe are compared with the mechanisms of the production and decay of nuclei, as well as with the mechanisms of their interaction at high energies. Examples that demonstrate the potential of nuclearphysics methods for studying cosmic objects and the properties of the Universe are given. The results that come from investigations into nuclear reactions induced by beams of radioactive nuclei and which make it possible to take a fresh look at the nucleosynthesis scenario in the range at light nuclei are presented.

Penionzhkevich, Yu. E., E-mail: pyuer@lnr.jinr.r [Joint Institute for Nuclear Research (Russian Federation)

2010-08-15

90

Nuclear waste  

SciTech Connect

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

Not Available

1988-05-01

91

Acompañamiento de la ciencia colombiana a las políticas públicas  

Microsoft Academic Search

Este artículo analiza el acompañamiento que la investigación científica promovida por COLCIENCIAS ha realizado a las políticas públicas en Colombia, en especial las referidas al bienestar social. A través de un doble análisis cualitativo y cuantitativo, se evalúa la distribución y la cobertura temática de algunas de las investigaciones realizadas entre 1990 y 2002, en los diversos tópicos asociados con

Sergio Riaga; Ana María Villa; María Velasco

2004-01-01

92

Nuclear Models  

SciTech Connect

The atomic nucleus is a typical example of a many-body problem. On the one hand, the number of nucleons (protons and neutrons) that constitute the nucleus is too large to allow for exact calculations. On the other hand, the number of constituent particles is too small for the individual nuclear excitation states to be explained by statistical methods. Another problem, particular for the atomic nucleus, is that the nucleon-nucleon (n-n) interaction is not one of the fundamental forces of Nature, and is hard to put in a single closed equation. The nucleon-nucleon interaction also behaves differently between two free nucleons (bare interaction) and between two nucleons in the nuclear medium (dressed interaction).Because of the above reasons, specific nuclear many-body models have been devised of which each one sheds light on some selected aspects of nuclear structure. Only combining the viewpoints of different models, a global insight of the atomic nucleus can be gained. In this chapter, we revise the the Nuclear Shell Model as an example of the microscopic approach, and the Collective Model as an example of the geometric approach. Finally, we study the statistical properties of nuclear spectra, basing on symmetry principles, to find out whether there is quantum chaos in the atomic nucleus. All three major approaches have been rewarded with the Nobel Prize of Physics. In the text, we will stress how each approach introduces its own series of approximations to reduce the prohibitingly large number of degrees of freedom of the full many-body problem to a smaller manageable number of effective degrees of freedom.

Fossion, Ruben [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, Mexico D. F., C.P. 04510 (Mexico)

2010-09-10

93

Nuclear Waste  

NSDL National Science Digital Library

This radio broadcast discusses the issue of dealing with radioactive liquid waste that has been leaking into the groundwater supply at the Hanford nuclear reservation. For years, the reservation in Washington state produced plutonium for nuclear weapons. Although the plant stopped production in 1987, about 54 million gallons of radioactive waste are still stored at the site, and many of the 177 underground storage tanks are leaking. The broadcast is 50 minutes in length. Photos, a site map, and a diagram of a storage tank are also provided.

94

Nuclear pursuits  

SciTech Connect

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.

Not Available

1993-05-01

95

Cuantificacion de plomo en leche cruda que se produce en algunas zonas del Valle de Toluca mediante tecnicas analiticas. (Determination of the concentrations of lead in raw milk in the Valley of Toluca).  

National Technical Information Service (NTIS)

The object of the present work, undertaken under the program of Regional and Cooperative Agreement for Nuclear Science and Technology in Latin America (ARCAL IV), was to determine the amounts of lead found in raw milk using the analytic techniques of Atom...

E. Rosas Vilchis

1991-01-01

96

LA INFLUENCIA DE LA CONFIANZA Y EL COMPROMISO SOBRE LAS FUNCIONES CREADORAS DE VALOR EN LAS RELACIONES COMERCIALES ENTRE EMPRESAS  

Microsoft Academic Search

El propósito de este trabajo es estudiar el efecto de la confianza y el compromiso sobre la creación de valor para el cliente. Para ello primero se examinan las distintas funciones creadoras de valor en las relaciones comerciales entre empresas. A continuación se plantea el modelo teórico que conecta la confianza y el compromiso con las funciones creadoras de valor.

J. A. López Sánchez; M. L Santos Vijande; J. A. Trespalacios Gutiérrez

2008-01-01

97

Nuclear Science.  

ERIC Educational Resources Information Center

|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…

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

98

NUCLEAR REACTOR  

DOEpatents

A boiling-water nuclear reactor is described wherein control is effected by varying the moderator-to-fuel ratio in the reactor core. This is accomplished by providing control tubes containing a liquid control moderator in the reactor core and providing means for varying the amount of control moderatcr within the control tubes.

Treshow, M.

1961-09-01

99

Nuclear Physics  

PubMed Central

The internal workings of the nucleus remain a mystery. A list of component parts exists, and in many cases their functional roles are known for events such as transcription, RNA processing, or nuclear export. Some of these components exhibit structural features in the nucleus, regions of concentration or bodies that have given rise to the concept of functional compartmentalization—that there are underlying organizational principles to be described. In contrast, a picture is emerging in which transcription appears to drive the assembly of the functional components required for gene expression, drawing from pools of excess factors. Unifying this seemingly dual nature requires a more rigorous approach, one in which components are tracked in time and space and correlated with onset of specific nuclear functions. In this chapter, we anticipate tools that will address these questions and provide the missing kinetics of nuclear function. These tools are based on analyzing the fluctuations inherent in the weak signals of endogenous nuclear processes and determining values for them. In this way, it will be possible eventually to provide a computational model describing the functional relationships of essential components.

Lionnet, T.; Wu, B.; Grunwald, D.; Singer, R.H.; Larson, D.R.

2011-01-01

100

Nuclear Fission  

Microsoft Academic Search

The probability of nuclear fission is reviewed relative to spontaneous ; fission half lives, penetration of the fission barrier, fission with siow ; neutrons, fission at inoderate and high excitation energies. fission cross ; sections near the threshold, and the fission of elements lighter than thorium. ; The energy available for fission and the kinetic and excitation energies of ;

I. Halpern

1959-01-01

101

Nuclear medicine  

Microsoft Academic Search

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

H. N. Jr

1986-01-01

102

Nuclear fusion  

Microsoft Academic Search

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

T. K. Fowler

1989-01-01

103

Nuclear emergencies.  

National Technical Information Service (NTIS)

This leaflet, which is in the form of a fold-up chart, has panels of text which summarize the emergencies that could arise and the countermeasures and emergency plans that have been prepared should nuclear accident occur or affect the United Kingdom. The ...

1991-01-01

104

Nuclear Terrorism.  

SciTech Connect

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.

Hecker, Siegfried S.

2001-01-01

105

Nuclear Induction  

Microsoft Academic Search

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

F. Bloch

1946-01-01

106

Nuclear orbiting  

SciTech Connect

Nuclear orbiting following collisions between sd and p shell nuclei is discussed. The dependence of this process on the real and imaginary parts of the nucleus-nucleus potential is discussed, as well as the evolution of the dinucleus toward a fully equilibrated fused system. 26 refs., 15 figs.

Shapira, D.

1988-01-01

107

NUCLEAR REACTOR  

DOEpatents

A nuclear reactor is described that includes spaced vertical fuel elements centrally disposed in a pressure vessel, a mass of graphite particles in the pressure vessel, means for fluidizing the graphite particles, and coolant tubes in the pressure vessel laterally spaced from the fuel elements. (AEC)

Post, R.G.

1963-05-01

108

Nuclear decapitation  

Microsoft Academic Search

The Reagan administration's policy of financial constraints conflicts with its policy of increasing national defense spending. President Kennedy faced the same problem in 1960 and chose to limit the deployment of nuclear weapons, which Reagan accepts along with the need for modernization and the concept of areas of vulnerability. Because the US cannot protect its communications facilities and command centers

Steinbruner

2009-01-01

109

Advanced Airborne CO2 LAS System  

NASA Astrophysics Data System (ADS)

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

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

2009-12-01

110

Nuclear Waste Storage.  

National Technical Information Service (NTIS)

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

1995-01-01

111

Consequences of Nuclear War.  

National Technical Information Service (NTIS)

Contents: The SCOPE ENUWAR Report on the climatic consequences of nuclear war; Climatic consequences of nuclear war; Medical consequences of nuclear war; Nuclear war--consequences on ecological, agricultural, and human systems; Societal consequences of nu...

1986-01-01

112

Nuclear Supersymmetry  

SciTech Connect

The concept of symmetries in physics is briefly reviewed. In the first part of these lecture notes, some of the basic mathematical tools needed for the understanding of symmetries in nature are presented, namely group theory, Lie groups and Lie algebras, and Noether's theorem. In the second part, some applications of symmetries in physics are discussed, ranging from isospin and flavor symmetry to more recent developments involving the interacting boson model and its extension to supersymmetries in nuclear physics.

Bijker, Roelof [Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico, Apartado Postal 70-543, 04510 Mexico, D.F. (Mexico)

2010-09-10

113

NUCLEAR REACTORS  

DOEpatents

ABS>A graphite moderator structure is presented for a nuclear reactor compriscd of an assembly of similarly orientated prismatic graphite blocks arranged on spaced longitudinal axes lying in common planes wherein the planes of the walls of the blocks are positioned so as to be twisted reintive to the planes of said axes so thatthe unlmpeded dtrect paths in direction wholly across the walls of the blocks are limited to the width of the blocks plus spacing between the blocks.

Long, E.; Ashby, J.W.

1958-09-16

114

NUCLEAR REACTOR  

DOEpatents

A fluidized bed nuclear reactor and a method of operating such a reactor are described. In the design means are provided for flowing a liquid moderator upwardly through the center of a bed of pellets of a nentron-fissionable material at such a rate as to obtain particulate fluidization while constraining the lower pontion of the bed into a conical shape. A smooth circulation of particles rising in the center and falling at the outside of the bed is thereby established. (AEC)

Anderson, C.R.

1962-07-24

115

Nuclear cardiology.  

PubMed

Nuclear cardiology has shown double digit growth yearly over the last few years and remains the second most commonly performed noninvasive cardiac imaging investigation of choice. Approximately 9 million studies performed yearly in the U.S. alone. As cardiovascular disease remains the largest healthcare problem around the world despite increasing healthcare spending there is growing interest to enhance the use of cost effective diagnostic tools, such as nuclear cardiology. Recent development of technology has seen the addition of hybrid imaging tools such PET/CT and SPECT/CT into the armorial. More data is expected to become available on this subject within the next few years, and we also expect several molecular imaging tests to become available for clinical use. Despite easy availability of these diagnostic tools, cardiac mortality and morbidity in patients with long term diabetes and also in the postoperative setting remains unexpectedly high and emergency department physician are still being sued after patients being discharged with undiagnosed chest pain. The value of the use of nuclear cardiology studies is briefly reviewed in these clinical settings. PMID:16352284

Ballok, Zita E

2005-11-04

116

Nuclear waste  

SciTech Connect

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.

Not Available

1991-09-01

117

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

NASA Astrophysics Data System (ADS)

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

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

2002-12-01

118

Nuclear photonics  

NASA Astrophysics Data System (ADS)

With the planned new ?-beam facilities like MEGa-ray at LLNL (USA) or ELI-NP at Bucharest (Romania) with 1013 ?/s and a band width of ?E?/E?~10-3, a new era of ? beams with energies up to 20MeV comes into operation, compared to the present world-leading HI?S facility at Duke University (USA) with 108 ?/s and ?E?/E?~3.10-2. In the long run even a seeded quantum FEL for ? beams may become possible, with much higher brilliance and spectral flux. At the same time new exciting possibilities open up for focused ? beams. Here we describe a new experiment at the ? beam of the ILL reactor (Grenoble, France), where we observed for the first time that the index of refraction for ? beams is determined by virtual pair creation. Using a combination of refractive and reflective optics, efficient monochromators for ? beams are being developed. Thus, we have to optimize the total system: the ?-beam facility, the ?-beam optics and ? detectors. We can trade ? intensity for band width, going down to ?E?/E?~10-6 and address individual nuclear levels. The term "nuclear photonics" stresses the importance of nuclear applications. We can address with ?-beams individual nuclear isotopes and not just elements like with X-ray beams. Compared to X rays, ? beams can penetrate much deeper into big samples like radioactive waste barrels, motors or batteries. We can perform tomography and microscopy studies by focusing down to ?m resolution using Nuclear Resonance Fluorescence (NRF) for detection with eV resolution and high spatial resolution at the same time. We discuss the dominating M1 and E1 excitations like the scissors mode, two-phonon quadrupole octupole excitations, pygmy dipole excitations or giant dipole excitations under the new facet of applications. We find many new applications in biomedicine, green energy, radioactive waste management or homeland security. Also more brilliant secondary beams of neutrons and positrons can be produced.

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

2012-07-01

119

Nuclear photonics  

SciTech Connect

With the planned new {gamma}-beam facilities like MEGa-ray at LLNL (USA) or ELI-NP at Bucharest (Romania) with 10{sup 13}{gamma}/s and a band width of {Delta}E{gamma}/E{gamma} Almost-Equal-To 10{sup -3}, a new era of {gamma} beams with energies up to 20MeV comes into operation, compared to the present world-leading HI{gamma}S facility at Duke University (USA) with 10{sup 8}{gamma}/s and {Delta}E{gamma}/E{gamma} Almost-Equal-To 3 Dot-Operator 10{sup -2}. In the long run even a seeded quantum FEL for {gamma} beams may become possible, with much higher brilliance and spectral flux. At the same time new exciting possibilities open up for focused {gamma} beams. Here we describe a new experiment at the {gamma} beam of the ILL reactor (Grenoble, France), where we observed for the first time that the index of refraction for {gamma} beams is determined by virtual pair creation. Using a combination of refractive and reflective optics, efficient monochromators for {gamma} beams are being developed. Thus, we have to optimize the total system: the {gamma}-beam facility, the {gamma}-beam optics and {gamma} detectors. We can trade {gamma} intensity for band width, going down to {Delta}E{gamma}/E{gamma} Almost-Equal-To 10{sup -6} and address individual nuclear levels. The term 'nuclear photonics' stresses the importance of nuclear applications. We can address with {gamma}-beams individual nuclear isotopes and not just elements like with X-ray beams. Compared to X rays, {gamma} beams can penetrate much deeper into big samples like radioactive waste barrels, motors or batteries. We can perform tomography and microscopy studies by focusing down to {mu}m resolution using Nuclear Resonance Fluorescence (NRF) for detection with eV resolution and high spatial resolution at the same time. We discuss the dominating M1 and E1 excitations like the scissors mode, two-phonon quadrupole octupole excitations, pygmy dipole excitations or giant dipole excitations under the new facet of applications. We find many new applications in biomedicine, green energy, radioactive waste management or homeland security. Also more brilliant secondary beams of neutrons and positrons can be produced.

Habs, D.; Guenther, M. M.; Jentschel, M.; Thirolf, P. G. [Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany); Max Planck Institut fuer Quantenoptik, D-85748 Garching (Germany); Institut Laue-Langevin, F-38042 Grenoble (Germany); Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany)

2012-07-09

120

The nuclear arsenals and nuclear disarmament.  

PubMed

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

Barnaby, F

121

The Nuclear Power and Nuclear Weapons Connection.  

ERIC Educational Resources Information Center

|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.…

Leventhal, Paul

1990-01-01

122

The Nuclear Power/Nuclear Weapons Connection.  

ERIC Educational Resources Information Center

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

Totten, Sam; Totten, Martha Wescoat

1985-01-01

123

The Nuclear Power and Nuclear Weapons Connection.  

ERIC Educational Resources Information Center

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)

Leventhal, Paul

1990-01-01

124

Adsorption of linear alkylbenzene sulfonate (LAS) on soils  

Microsoft Academic Search

Experimental measurements of the adsorption of linear alkylbenzene sulfonate (LAS) on soils were made at 25°C using a continuous adsorption apparatus. The adsorption of LAS on natural soils could be divided into two stages: linear and exponentially increasing isotherms. At low LAS concentration (< 90 ?g ml?1), the adsorption isotherms were linear and Kd was among 1.2 to 2.0. At

Ziqing Ou; Ayfer Yediler; Yaowu He; Liangqing Jia; Antonius Kettrup; Tieheng Sun

1996-01-01

125

Estrategias sobre innovacion en las empresas multinacionales agroalimentarias  

Microsoft Academic Search

Las multinacionales agroalimentarias son las principales innovadoras del sector agroalimentario mundial y agentes econ�micos fundamentales del cambio tecnol�gico en el sector agroalimentario espa�ol. El estudio del comportamiento innovador de las multinacionales agroalimentarias presenta inter�s puesto que el 50% de la tecnolog�a relacionada mundialmente con la alimentaci�n procede de este tipo de empresas. Bas�ndonos en una muestra de m�s de 16.000

Ruth Rama; Oscar Alfranca; Nicholas von Tunzelmann

2003-01-01

126

The Arabidopsis Nuclear Pore and Nuclear Envelope  

PubMed Central

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.

Meier, Iris; Brkljacic, Jelena

2010-01-01

127

Nuclear security  

SciTech Connect

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.

Dingell, J.D.

1991-02-01

128

Nuclear energy.  

PubMed

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

Grandin, Karl; Jagers, Peter; Kullander, Sven

2010-01-01

129

Las Cumbres Observatory Global Telescope Network  

NASA Astrophysics Data System (ADS)

Las Cumbres Observatory Global Telescope (LCOGT) is a young organization dedicated to time-domain observations at optical and (potentially) near-IR wavelengths. To this end, LCOGT is constructing a worldwide network of telescopes, including the two 2 m Faulkes telescopes, as many as 17 × 1 m telescopes, and as many as 23 × 40 cm telescopes. These telescopes initially will be outfitted for imaging and (excepting the 40 cm telescopes) spectroscopy at wavelengths between the atmospheric UV cutoff and the roughly 1-?m limit of silicon detectors. Since the first of LCOGT''s 1 m telescopes are now being deployed, we lay out here LCOGT''s scientific goals and the requirements that these goals place on network architecture and performance, we summarize the network''s present and projected level of development, and we describe our expected schedule for completing it. In the bulk of the paper, we describe in detail the technical approaches that we have adopted to attain desired performance. In particular, we discuss our choices for the number and location of network sites, for the number and sizes of telescopes, for the specifications of the first generation of instruments, for the software that will schedule and control the network''s telescopes and reduce and archive its data, and for the structure of the scientific and educational programs for which the network will provide observations.

Brown, T. M.; Baliber, N.; Bianco, F. B.; Bowman, M.; Burleson, B.; Conway, P.; Crellin, M.; Depagne, É.; De Vera, J.; Dilday, B.; Dragomir, D.; Dubberley, M.; Eastman, J. D.; Elphick, M.; Falarski, M.; Foale, S.; Ford, M.; Fulton, B. J.; Garza, J.; Gomez, E. L.; Graham, M.; Greene, R.; Haldeman, B.; Hawkins, E.; Haworth, B.; Haynes, R.; Hidas, M.; Hjelstrom, A. E.; Howell, D. A.; Hygelund, J.; Lister, T. A.; Lobdill, R.; Martinez, J.; Mullins, D. S.; Norbury, M.; Parrent, J.; Paulson, R.; Petry, D. L.; Pickles, A.; Posner, V.; Rosing, W. E.; Ross, R.; Sand, D. J.; Saunders, E. S.; Shobbrook, J.; Shporer, A.; Street, R. A.; Thomas, D.; Tsapras, Y.; Tufts, J. R.; Valenti, S.; Vander Horst, K.; Walker, Z.; White, G.; Willis, M.

2013-09-01

130

Nuclear reactor  

SciTech Connect

A nuclear reactor is described including a vessel, a nuclear core within the vessel and control-rod assemblies within the vessel. The control-rod assemblies include vertical control-rod guide means in a plenum vertically above the core. The control-rod assemblies also include control-rod clusters. Each cluster includes control rods suspended from a spider. The cluster is movable to move its control rods between the guide means and the core, and a drive rod connected to each cluster for so moving each cluster. The vessel has at least an inlet nozzle for supplying a coolant through the core, the inflowing coolant after passing through the core flowing predominantly through the guide means generally vertically, a calandria in the path of the outflowing coolant, from the guide means. The calandria includes hollow members, an upper support for the members perforate to the opening within the members and a lower support. The calandria is mounted with its lower support above and on the guide means and with the drive rods only and not the control rods passing through the hollow members. The lower support is perforate to the coolant flowing out of the guide means. The vessel has at least an outlet nozzle with a generally horizontal coolant outflow channel. The outflow channel is substantially at the level of the calandria so that the coolant flowing into the calandria flows generally transversely over the outer surfaces of the hollow members and out through the outflow channel.

Veronesi, L.; Garner, D.C.

1987-12-29

131

Nuclear regulation  

SciTech Connect

The Nuclear Regulatory Commission routinely waives its background investigation requirements for new hires. NRC security staff estimate that 99 percent of new employees are hired before they receive a security clearance. They say waivers are used because the Office of Personnel and Management takes too long to conduct the required background investigations. NRC policies do not require reinvestigation of the background of nearly 50 percent of its clearance holders. Therefore, NRC does not know whether circumstances in some employees' lifestyle have changed, making them security risks. Also, NRC does not have accurate clearance information to effectively manage its program. For example, its computerized system does not have all the data needed to determine when reinvestigations should be requested. This report proposes that, to enhance security and improve the effectiveness of its clearance program NRC should require periodic reinvestigations for all employees, validate and update the security clearance database, and expedite a decision to issue either a policy statement or a regulation regarding access to commercial nuclear power plants.

Not Available

1989-01-01

132

Nuclear Education Update.  

ERIC Educational Resources Information Center

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

Winter, Metta L.

1986-01-01

133

Nuclear Waste Disposal  

Microsoft Academic Search

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

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

2005-01-01

134

Nuclear power revival  

Microsoft Academic Search

There has not been a nuclear power plant licensed since 1979 due to the radioactive releases at the Three Mile Island nuclear power plant and an accident at Chernobyl. The public and federal government opinion regarding nuclear power has since changed because the nuclear power plants are operating with unprecedented reliability and economy. Nuclear has again become the focus of

Narinder K. Trehan; Rohit Saran

2003-01-01

135

Nuclear Energy and Security  

Microsoft Academic Search

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

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

2000-01-01

136

Nuclear Education Update.  

ERIC Educational Resources Information Center

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

Winter, Metta L.

1986-01-01

137

Nuclear power: Fourth edition  

Microsoft Academic Search

This book describes the basics of nuclear power generation, explaining both the benefits and the real and imagined risks of nuclear power. It includes a discussion of the Three Mile Island accident and its effects. Nuclear Power has been used in the public information programs of more than 100 utilities. The contents discussed are: Nuclear Power and People; Why Nuclear

Deutsch

1986-01-01

138

Prospects for Nuclear Power  

Microsoft Academic Search

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

Lucas W. Davis

2012-01-01

139

Objections to nuclear defence  

SciTech Connect

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

Blake, N.; Pole, K.

1984-01-01

140

El impacto de las reformas estructurales en la agricultura colombiana  

Microsoft Academic Search

Colombia, como la mayor parte de los países latinoamericanos, emprendió un ambicioso proceso de liberalización y reformas al clarear la década de los años noventa, el cual cobijó al sector agropecuario. Las reformas en el agro tuvieron tres períodos: desde el segundo semestre de 1990 hasta finales de 1992 se pusieron en marcha la mayoría de las reformas iniciales, de

Santiago Perry

2000-01-01

141

GIS Methodology for Quantifying Channel Change in Las Vegas, Nevada  

Microsoft Academic Search

This study applies spatial analyses to examine the consequences of accelerated urban expansion on a hydrologic system over a period of 24 years. Three sets of historical aerial photos are used in a GIS analysis to document the geomorphic history of Las Vegas Wash, which drains the rapidly growing Las Vegas urban area in southern Nevada. New spatial techniques are

Susan E. Buckingham; John W. Whitney

2007-01-01

142

NUCLEAR REACTOR  

DOEpatents

A nuclear reactor of the homogeneous liquid fuel type is described wherein the fissionable isotope is suspended or dissolved in a liquid moderator such as water. The reactor core is comprised essentially of a spherical vessel for containing the reactive composition surrounded by a reflector, preferably of beryllium oxide. The reactive composition may be an ordinary water solution of a soluble salt of uranium, the quantity of fissionable isotope in solution being sufficient to provide a critical mass in the vessel. The liquid fuel is stored in a tank of non-crtttcal geometry below the reactor vessel and outside of the reflector and is passed from the tank to the vessel through a pipe connecting the two by air pressure means. Neutron absorbing control and safety rods are operated within slots in the reflector adjacent to the vessel.

Christy, R.F.

1958-07-15

143

Nuclear Fusion  

NASA Astrophysics Data System (ADS)

This chapter is devoted to the fundamental concepts of nuclear fusion. To be more precise, it is devoted to the theoretical basics of fusion reactions between light nuclei such as hydrogen, helium, boron, and lithium. The discussion is limited because our purpose is to focus on laboratory-scale fusion experiments that aim at gaining energy from the fusion process. After discussing the methods of calculating the fusion cross section, it will be shown that sustained fusion reactions with energy gain must happen in a thermal medium because, in beam-target experiments, the energy of the beam is randomized faster than the fusion rate. Following a brief introduction to the elements of plasma physics, the chapter is concluded with the introduction of the most prominent fusion reactions ongoing in the Sun.

Veres, G.

144

NUCLEAR REACTOR  

DOEpatents

This patent relates to nuclear reactors of the type which use a liquid fuel, such as a solution of uranyl sulfate in ordinary water which acts as the moderator. The reactor is comprised of a spherical vessel having a diameter of about 12 inches substantially surrounded by a reflector of beryllium oxide. Conventionnl control rods and safety rods are operated in slots in the reflector outside the vessel to control the operation of the reactor. An additional means for increasing the safety factor of the reactor by raising the ratio of delayed neutrons to prompt neutrons, is provided and consists of a soluble sulfate salt of beryllium dissolved in the liquid fuel in the proper proportion to obtain the result desired.

Miller, H.I.; Smith, R.C.

1958-01-21

145

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: ...

146

Nuclear analytical chemistry  

SciTech Connect

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 and activation methods, as well as their applications. The book provides guidance in analytical chemistry, agriculture, environmental and biomedical sciences, etc. The contents include: the nuclear periodic system; nuclear decay; nuclear reactions; nuclear radiation sources; interaction of radiation with matter; principles of radiation detectors; nuclear electronics; statistical methods and spectral analysis; methods of radiation detection; neutron activation analysis; charged particle activation analysis; photon activation analysis; sample preparation and chemical separation; nuclear chemical analysis in biological and medical research; the use of nuclear chemical analysis in the field of criminology; nuclear chemical analysis in environmental sciences, geology and mineral exploration; and radiation protection.

Brune, D.; Forkman, B.; Persson, B.

1984-01-01

147

Nuclear Light Bulb.  

National Technical Information Service (NTIS)

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...

T. Latham

1991-01-01

148

Nuclear war: Opposing viewpoints  

SciTech Connect

This book presents opposing viewpoints on nuclear war. Topics discussed include: how nuclear would begin; would humanity survive; would civil defense work; will an arms agreement work; and can space weapons reduce the risk of nuclear war.

Szumski, B.

1985-01-01

149

ARTICULACIÓN DE LAS ORGANIZACIONES DE SEXOSERVIDORAS CON LAS POLÍTICAS DE SALUD EN MÉXICO: BARRIO DE LA MERCED 2003  

Microsoft Academic Search

1. Antecedentes El presente trabajo de investigación surge como respuesta a la inquietud de generar una perspectiva diferente que, además de explicar el fenómeno del sexoservicio y sus implicaciones en la salud, pueda determinar líneas de acción encauzadas al mejoramiento de las condiciones de vida y oportunidades objetivas en la obtención de servicios integrales de salud para las mujeres que

Manuel Enrique; Morales Santiago

150

Las denuncias que reciben las empresas: ¿se relacionan con la percepción de prestigio que poseen? Análisis en empresas argentinas  

Microsoft Academic Search

El trabajo tiene por objeto determinar a partir de un análisis no paramétrico utilizando el método de la r de Spearman, la existencia de una relación entre la percepción que el público tiene sobre las empresas y la cantidad de denuncias que reciben. El análisis efectuado se centra en el estudio de dos variables: el prestigio de las empresas, por

Fernando G. Torres

2008-01-01

151

Nuclear fuel assembly  

SciTech Connect

First nuclear fuel elements in which a fissionable material in which a burnable poison is incorporated is loaded and second nuclear fuel elements in which a fissionable material in which no burnable poison is incorporated is loaded are disposed in a nuclear fuel assembly. Content of the fissionable material in the first nuclear fuel element is less than about 72% of that of the fissionable material in the second nuclear fuel element adjacent to the first nuclear fuel element.

Hosokawa, T.; Maki, H.; Shinbo, K.

1982-10-19

152

Nuclear Fuel Cycle & Vulnerabilities  

SciTech Connect

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

Boyer, Brian D. [Los Alamos National Laboratory

2012-06-18

153

Focused Technology: Nuclear Propulsion.  

National Technical Information Service (NTIS)

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

T. J. Miller

1993-01-01

154

Nuclear cross sections for nuclear energy  

Microsoft Academic Search

Practical payoffs from utilizing basic research and nuclear cross sections to improve efficiency and safety and cut operating costs in nuclear power plants are reviewed. Improvements in the performance of light water reactors, fast breeders, thermal-neutron breeders, fusion arrangements, handling of fission products, developing safeguards against theft of nuclear materials, and radioactive wastes disposal are discussed. Careful attention to plutonium

J. L. Fowler; William W. Havens

1976-01-01

155

Nuclear Power in China  

NASA Astrophysics Data System (ADS)

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

Zhou, Yun

2012-02-01

156

Fate of linear alkylbenzene sulfonate (LAS) in activated sludge plants.  

PubMed

Monitoring data were collected in a pilot-scale municipal activated sludge plant to assess the fate of the C12-homologue of linear alkyl benzene sulfonate (LAS-C12). The pilot-plant was operated at influent LAS-C12 concentrations between 2 and 12 mg l(-1) and at sludge retention times of 10 and 27 days. Effluent and waste sludge concentrations varied between 5 and 10 microg l(-1) and between 37 and 69 microg g(-1) VSS, respectively. In the sludge samples only 2-8% was present as dissolved LAS-C12, whereas the remaining 92-98% was found to be adsorbed to the sludge. In spite of this high degree of sorption, more than 99% of the LAS-C12 load was removed by biodegradation, showing that not only the soluble fraction but also the adsorbed fraction of LAS-C12 is readily available for biodegradation. Sorption and biodegradation of LAS-C12 were also investigated separately. Sorption was an extremely fast and reversible process and could be described by a linear isotherm with a partition coefficient of 3.2 l g(-1) volatile suspended solids. From the results of biodegradation kinetic tests it was concluded that primary biodegradation of LAS-C12 cannot be described by a (growth) Monod model, but a secondary utilisation model should be used instead. The apparent affinity of the sludge to biodegrade LAS-C12 increased when the sludge was loaded with higher influent concentrations of LAS-C12. PMID:14769410

Temmink, H; Klapwijk, Bram

2004-02-01

157

El impacto de las crisis de subsistencias de la década de 1850 en el País Vasco  

Microsoft Academic Search

Este artículo analiza las últimas crisis de subsistencias en el País Vasco antes de la construcción de los ferrocarriles. Distingue el impacto en las zonas productoras (de trigo y\\/o de maíz) y en las ciudades. En dos de éstas, a pesar de la imagen de paz social transmitida por las autoridades fueristas vascas, las subsistencias suscitaron movilizaciones populares, sólo en

Rafael Ruzafa Ortega

2004-01-01

158

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

SciTech Connect

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.

Piotr Wasiolek

2008-06-01

159

Panel report: nuclear physics  

Microsoft Academic Search

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

Joseph A Carlson; Edward P Hartouni

2010-01-01

160

Frontiers of Nuclear Structure  

SciTech Connect

Current developments in nuclear structure at the `limits` are discussed. The studies of nuclear behavior at extreme conditions provide us with invaluable information about the nature of the nuclear interaction and nucleonic correlations at various energy-distance scales. In this talk frontiers of nuclear structure are briefly reviewed from a theoretical perspective, mainly concentrating on medium-mass and heavy nuclei.

Nazarewicz, Witold

1997-12-31

161

Nuclear energy and security  

SciTech Connect

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.

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

2000-01-01

162

Nuclear power's burdened future  

Microsoft Academic Search

Although governments of the world's leading nations are reiterating their faith in nuclear power, Chernobyl has brought into focus the public's overwhelming feeling that the current generation of nuclear technology is simple not working. Despite the drastic slowdown, however, the global nuclear enterprise is large. As of mid-1986, the world had 366 nuclear power plants in operation, with a generating

Flavin

2009-01-01

163

Revitalizing Nuclear Safety Research.  

ERIC Educational Resources Information Center

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

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

164

Topics in Nuclear Astrophysics  

SciTech Connect

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.

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

2010-11-24

165

Modular nuclear steam supply  

Microsoft Academic Search

In 1985, the U.S. Department of Energy began a $90 million program to study some basic concepts of nuclear-fueled power generation. The problem was to create an inherently safe, modular nuclear steam supply system that could be installed more quickly and less expensively than current nuclear systems. The DOE chose the Power Reactor Inherently Safe Module as the official nuclear

1989-01-01

166

Nuclear medicine annual, 1984  

SciTech Connect

The following topics are reviewed in this work: nuclear physicians role in planning for and handling radiation accidents; the role of nuclear medicine in evaluating the hypertensive patient; studies of the heart with radionuclides; role of radionuclide imaging in the patient undergoing chemotherapy; hematologic nuclear medicine; the role of nuclear medicine in sports related injuries; radionuclide evaluation of hepatic function with emphasis on cholestatis.

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

1984-01-01

167

Terrorists and Nuclear Technology  

ERIC Educational Resources Information Center

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

Krieger, David

1975-01-01

168

Nuclear weapons in Europe  

Microsoft Academic Search

This book presents papers on the issue of the deployment of intermediate-range American nuclear missiles in Western Europe. Topics considered include an American view on the struggle for Europe, military strategy, nuclear deterrence, the illusion of NATO's nuclear defense, arms control, political aspects, national security, and a German Social Democrat's perspective on nuclear weapons in Europe.

1984-01-01

169

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

NASA Astrophysics Data System (ADS)

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

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

1991-03-01

170

Revisión Previa a la Concesión de la Licencia para las ...  

Center for Biologics Evaluation and Research (CBER)

Text VersionPage 1. Revisión Previa a la Concesión de la Licencia para las Vacunas Preventivas DIAPOSITIVA 1 Esta presentación ... More results from www.fda.gov/downloads/biologicsbloodvaccines/internationalactivities

171

Discriminación arancelaria y decisiones de localización de las empresas  

Microsoft Academic Search

El objetivo de trabajo es el de analizar los efectos que los procesos de integración económica entre los países tienen sobre las decisiones se toman en forma estratégica. Se justifica que en este contexto el tradicional argumento \\

José Méndez Naya

2006-01-01

172

[Chilean nuclear policy].  

PubMed

This official document is statement of the President of the Chilean Nuclear Energy Commission, Dr. Eduardo Bobadilla, about the nuclear policy of the Chilean State, Thanks to the international policy adopted by presidents Aylwin (1990-1994) and his successor Frei Ruiz Tagle (1994-), a nuclear development plan, protected by the Chilean entrance to the nuclear weapons non proliferation treaty and Tlatelolco Denuclearization treaty, has started. Chile will be able to develop without interference, an autonomous nuclear electrical system and other pacific uses of nuclear energy. Chile also supports a new international treaty to ban nuclear weapon tests. PMID:9041734

Bobadilla, E

1996-06-01

173

Fate of linear alkylbenzene sulfonate (LAS) in activated sludge plants  

Microsoft Academic Search

Monitoring data were collected in a pilot-scale municipal activated sludge plant to assess the fate of the C12-homologue of linear alkyl benzene sulfonate (LAS-C12). The pilot-plant was operated at influent LAS-C12 concentrations between 2 and 12mgl?1 and at sludge retention times of 10 and 27 days. Effluent and waste sludge concentrations varied between 5 and 10?gl?1 and between 37 and

H. Temmink; Bram Klapwijk

2004-01-01

174

Photocatalytic Treatment of Linear Alkylbenzene Sulfonate (LAS) in Water  

Microsoft Academic Search

The photocatalytic degradation of aqueous linear alkylbenzene sulfonate (LAS) was studied. Two different photocatalysts, Degussa P25 TiO2 and Hombikat UV 100 TiO2, were used to degrade aqueous linear alkylbenzene sulfonate in slurry batch photoreactors. For a 100 mg\\/L LAS solution based on first–order rate constants, the optimum photocatalyst loading for Degussa P25 TiO2 was 4.0 g\\/L, while for Hombikat UV

Mehrab Mehrvar; Sarah Hatfield Venhuis

2005-01-01

175

Visualizing Large Datasets with LAS and Google Earth  

NASA Astrophysics Data System (ADS)

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 analysis products generated from geo- referenced scientific datasets. In this presentation, we introduce a new capability of LAS for interactively visualizing large datasets by utilizing the view-based refresh queries of Google Earth and the automatic decimation ("striding") capabilities of Ferret. When viewing a high resolution dataset on a global scale it is wasteful of bandwidth to handle the full resolution data. With the striding capability, Ferret selects every nth point along an axis, where n is the striding value. The striding values are dynamically computed based upon the size of the area of interest. The automatic striding approach minimizes the volume of data that need be touched to visualize a large geographic area. Higher resolutions are utilized for smaller areas to reveal the fine structures. The LAS provides this behavior using Google Earth as the user interface. As users zoom or pan on Google Earth, Google Earth interacts with LAS through a Network Link, which contains the URL of a LAS server. When the view inside Google Earth stops for a set number of seconds, it makes a request to a LAS server, sending the LAS server the latitude and longitude boundaries (bounding box) of the area currently in view. The LAS server uses that information to compute stride values, instruct Ferret to generate a visualization for that particular geographic area, and send the resulting image back to Google Earth.

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

2007-12-01

176

Airborne Validation of Active CO2 LAS Measurements  

Microsoft Academic Search

A unique, multi-frequency, single-beam, laser absorption spectrometer (LAS) that operates at 1.57 mum has been developed for a future space-based mission to determine the global distribution of sources and sinks of atmospheric carbon dioxide (CO2). A prototype of the space-based LAS system was developed by ITT, and it has been successfully flight tested in seven airborne campaigns conducted in different

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

2009-01-01

177

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

Microsoft Academic Search

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

E. G. Wolff

1988-01-01

178

Vertical nuclear proliferation  

Microsoft Academic Search

All the nuclear-weapon states are working to develop new nuclear-weapon systems and upgrade their existing ones. Although the US Congress has recently blocked further development of small nuclear weapons and earth-penetrating nuclear weapons, the United States is planning a range of new warheads under the Reliable Replacement Warhead programme, and renewing its nuclear weapons infrastructure. The United Kingdom is spending

Victor W. Sidel

2007-01-01

179

Controlling nuclear proliferation  

Microsoft Academic Search

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

1981-01-01

180

LAS removal and biodegradation in a wastewater treatment plant  

SciTech Connect

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 to establish LAS biodegradation in real WWTP conditions. EniChem Augusta (EA) and Consorzio Po-Sangone (CPS) have worked together for over two years on this problem, taking into consideration the large and central active sludge WWTP of the metropolitan area of Torino, north of Italy. Specific LAS data have been obtained, using established HPLC techniques, in influent and effluent streams, in the dissolved and adsorbed phases, to reach a complete mass balance. LAS removal >99% and LAS biodegradation of approximately 85% have been observed. Attention also has been given to LAS intermediates of biodegradation, namely the sulfophenyl carboxylates (SPC), using HPLC and GC-MS techniques, the latter after derivatization. The SPCs have been found present only in the waters and not in the adsorbed phases.

Cavalli, L.; Gellera, A.; Landone, A. (EniChem Augusta Industriale, Milano (Italy))

1993-10-01

181

Modeling of Nonpoint Source Pollution in the Las Vegas Valley  

NASA Astrophysics Data System (ADS)

The point sources of pollution (including wastewater treatment plants) within urban areas are well known. However, the contribution of nonpoint source pollution to receiving waterbodies is not as well understood. In this study, the contributions of nonpoint source runoff is evaluated and compared to the loadings from the wastewater treatment facilities in the Las Vegas Valley of southern Nevada. The entire Las Vegas Valley watershed (approximately 2300 square miles) drains to Lake Mead on the Colorado River. Lake Mead is also the main source of drinking water for Las Vegas. Thus, any runoff generated from the Las Vegas Valley could potentially have adverse impact to this drinking water source. A GIS grid based model is developed to calculate total annual nonpoint nutrients and total solid loads from the Las Vegas Valley. The watershed is subdivided and loads are estimated for all land uses. GIS is used to calculate these loads for each grid cell and then ArcView GIS tools are used to track the accumulation of pollutant loads in the storm channel network. This study uses current data obtained from Clark County GIS Management Office and Clark County Regional Flood Control District. The results of this study will assist local and State agencies in developing Total Maximum Daily Loads for the Las Vegas Wash and provide a better understanding of nonpoint source pollution.

Reginato, M.; Piechota, T. C.

2001-12-01

182

77 FR 1720 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico  

Federal Register 2010, 2011, 2012, 2013

...DF0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management (BLM), Las Cruces District Resource Advisory Council (RAC...is January 25, 2012, at the BLM Las Cruces District Office, 1800 Marquess...

2012-01-11

183

77 FR 55225 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico  

Federal Register 2010, 2011, 2012, 2013

...DF0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management (BLM), Las Cruces District Resource Advisory Council (RAC...is September 19, 2012, at the BLM Las Cruces District Office, 1800 Marquess...

2012-09-07

184

76 FR 61379 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico  

Federal Register 2010, 2011, 2012, 2013

...XH0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management (BLM), Las Cruces District Resource Advisory Council (RAC...is October 20, 2011, at the BLM Las Cruces District Office, 1800 Marquess...

2011-10-04

185

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

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Las Vegas Intrastate Air Quality Control Region. ...Quality Control Regions § 81.80 Las Vegas Intrastate Air Quality Control Region. The Las Vegas Intrastate Air Quality Control...

2010-07-01

186

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

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Las Vegas Intrastate Air Quality Control Region. ...Quality Control Regions § 81.80 Las Vegas Intrastate Air Quality Control Region. The Las Vegas Intrastate Air Quality Control...

2009-07-01

187

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

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Las Vegas Intrastate Air Quality Control Region. ...Quality Control Regions § 81.80 Las Vegas Intrastate Air Quality Control Region. The Las Vegas Intrastate Air Quality Control...

2013-07-01

188

Importing the BombSensitive Nuclear Assistance and Nuclear Proliferation  

Microsoft Academic Search

Why do nuclear weapons spread? Using new data on sensitive nuclear transfers, this article analyzes the determinants of nuclear proliferation. The author first describes a simple logic of the technical and strategic advantages that potential nuclear proliferators can gain by importing nuclear materials and technology from more advanced nuclear states. The author then shows that sensitive nuclear transfers are an

Matthew Kroenig

2009-01-01

189

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

SciTech Connect

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.

Piotr Wasiolek

2007-12-01

190

Nuclear Structure Aspects in Nuclear Astrophysics  

SciTech Connect

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.

Smith, Michael Scott [ORNL

2006-12-01

191

Microscopic Nuclear Structure Relevant to Nuclear Astrophysics  

NASA Astrophysics Data System (ADS)

Structure of exotic radioactive nuclei having extreme neutron-to-proton ratios is different from that around the stability line. Those nuclei are crucial astrophysically; they pave the highway along which the nuclear material is transported up in the proton and neutron numbers during the complicated synthesis processes in stars. Their structure is also crucial for our understanding of how the stars tick. This short review discusses the progress in microscopic nuclear modeling relevant to nuclear astrophysics.

Nazarewicz, W.

2005-12-01

192

Contribution of Proteases and LasR to the Virulence of Pseudomonas aeruginosa during Corneal Infections  

Microsoft Academic Search

The roles of the Pseudomonas aeruginosa proteases LasB (elastase) and LasA and the transcriptional activator LasR, which regulates the expression of these proteases, were evaluated in a murine model of P. aeruginosa corneal infection. In scarified corneas, P. aeruginosa PAO-A1 (LasA negative) or PAO-B1A1 (LasB and LasA negative) at a dose of 10 8 CFU per eye caused very mild

MICHAEL J. PRESTON; PATRICK C. SEED; DEBBIE S. TODER; BARBARA H. IGLEWSKI; DENNIS E. OHMAN; JEAN K. GUSTIN; JOANNA B. GOLDBERG; GERALD B. PIER

1997-01-01

193

Actitudes de los candidatos y maestros de ciencias en servicio acerca del uso de las herramientas computadorizadas en las clases de ciencias  

NASA Astrophysics Data System (ADS)

Este estudio examino y comparo las actitudes de los candidatos a maestros de ciencias y los maestros de ciencias en servicio acerca de la utilizacion de las herramientas computadorizadas en las clases de ciencias. Tambien identifico y diferencio el uso que ellos dan a estas herramientas en las clases de ciencias. Este estudio presenta un diseno descriptivo exploratorio. Constituyeron la muestra trescientos diez sujetos que fueron candidatos a maestros de ciencias o maestros de ciencias en servicio. Para recoger los datos se construyo y valido un cuestionario de treinta y un itemes. Se utilizaron las pruebas estadisticas no parametricas Kruskal Wallis y Chi-cuadrado (test de homogeneidad) para establecer las diferencias entre las actitudes de los sujetos con relacion al uso de las herramientas computadorizadas en las clases de ciencias. Los hallazgos evidenciaron que son positivas y muy parecidas las actitudes de los candidatos a maestros y maestros en servicio hacia el uso de las herramientas computadorizadas. No hubo diferencias entre los candidatos y maestros en servicio en terminos de las actitudes de confianza y empatia hacia el uso de las herramientas computadorizadas en las clases de ciencias. En aspectos como el uso del banco de datos bibliografico Eric y el uso de las herramientas computadorizadas en actividades educativas como explorar conceptos, conceptuar, aplicar lo aprendido y hacer asignaciones hubo diferencias estadisticamente significativas entre los candidatos y los maestros en servicio. Al comparar las frecuencias observadas con las esperadas hubo mas maestros en servicio y menos candidatos que indicaron usar el anterior banco de datos y las herramientas computadorizadas en las mencionadas actividades educativas.

Bayuelo, Ezequiel

194

Mechanisms of nuclear positioning.  

PubMed

The mechanisms underlying two types of microtubule-dependent nuclear positioning are discussed. 'MTOC-dependent nuclear positioning' occurs when a nucleus is tightly associated with a microtubule organizing center (MTOC). 'Nuclear tracking along microtubules' is analogous to the motor-driven motility of other organelles and occurs when the nucleus lacks an associated MTOC. These two basic types of microtubule-dependent nuclear positioning may cooperate in many proliferating animal cells to achieve proper nuclear positioning. Microtubule polymerization and dynamics, motor proteins, MAPs and specialized sites such as cortical anchors function to control nuclear movements within cells. PMID:9683624

Reinsch, S; Gönczy, P

1998-08-01

195

Photocatalytic treatment of linear alkylbenzene sulfonate (LAS) in water.  

PubMed

The photocatalytic degradation of aqueous linear alkylbenzene sulfonate (LAS) was studied. Two different photocatalysts, Degussa P25 TiO2 and Hombikat UV 100 TiO2, were used to degrade aqueous linear alkylbenzene sulfonate in slurry batch photoreactors. For a 100 mg/L LAS solution based on first-order rate constants, the optimum photocatalyst loading for Degussa P25 TiO2 was 4.0 g/L, while for Hombikat UV 100 TiO2 it was 2.0 g/L. The photoactivity of Degussa P25 TiO2 it was higher than that of Hombikat UV 100 TiO2 for the treatment of LAS. A mixture of both photocatalysts did not improve the LAS degradation rates in batch experiments. Combination of Degussa P25 TiO2 and 600 mg/L H2O2 along with irradiation with UV light at either 254 or 365 nm did not improve the LAS degradation rates over the photocatalytic or photolytic processes individually. PMID:15887569

Mehrvar, Mehrab; Venhuis, Sarah Hatfield

2005-01-01

196

China's nuclear safety regulatory body: The national nuclear safety administration.  

National Technical Information Service (NTIS)

The establishment of an independent nuclear safety regulatory body is necessary for ensuring the safety of nuclear installations and nuclear fuel. Therefore the National Nuclear Safety Administration was established by the state. The aim, purpose, organiz...

S. Zhang

1991-01-01

197

Nuclear Medicine Imaging  

MedlinePLUS

... Nuclear Lo que usted necesita saber acerca de... Un procedimiento de medicina nuclear se describe algunas veces ... viaja a través del cuerpo, produce emisiones radioactivas. Un tipo especial de cámara detecta estas emisiones en ...

198

Introduction to Nuclear Physics  

SciTech Connect

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.

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

2010-01-05

199

Iran's Nuclear Program: Status.  

National Technical Information Service (NTIS)

Although Iran claims that its nuclear programs are exclusively for peaceful purposes, they have generated considerable concern that Tehran is pursuing a nuclear weapons program. Indeed, the UN Security Council has responded to Iran's refusal to suspend wo...

P. K. Kerr

2008-01-01

200

Nuclear Charge Distributions.  

National Technical Information Service (NTIS)

The Hartree-Fock (HF) and Single-Particle Potential (SPP) methods of calculating nuclear charge distributions are reviewed with particular reference to their value for understanding nuclear structure. The development of the SPP method is described in deta...

F. Malaguti A. Uguzzoni E. Verondini P. E. Hodgson

1981-01-01

201

Project Nuclear Safety (PNS).  

National Technical Information Service (NTIS)

The annual report of the nuclear safety project (PNS) describes the work of the participating institutes in the fields of 1) safety and environmental protection in nuclear power plants, 2) safety and environmental protection in reprocessing plants, and 3)...

1978-01-01

202

Teaching "The Nuclear Predicament."  

ERIC Educational Resources Information Center

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

Carman, Philip; Kneeshaw, Stephen

1987-01-01

203

Fundamentals in Nuclear Physics  

NASA Astrophysics Data System (ADS)

This course on nuclear physics leads the reader to the exploration of the field from nuclei to astrophysical issues. Much nuclear phenomenology can be understood from simple arguments such as those based on the Pauli principle and the Coulomb barrier. This book is concerned with extrapolating from such arguments and illustrating nuclear systematics with experimental data. Starting with the basic concepts in nuclear physics, nuclear models, and reactions, the book covers nuclear decays and the fundamental electro-weak interactions, radioactivity, and nuclear energy. After the discussions of fission and fusion leading into nuclear astrophysics, there is a presentation of the latest ideas about cosmology. As a primer this course will lay the foundations for more specialized subjects. This book emerged from a series of topical courses the authors delivered at the Ecole Polytechnique and will be useful for graduate students and for scientists in a variety of fields.

Basdevant, Jean-Louis, Rich, James, Spiro, Michael

204

Triangle Universities Nuclear Laboratory  

SciTech Connect

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

Not Available

1991-01-01

205

Nuclear power browning out  

SciTech Connect

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

Flavin, C.; Lenssen, N.

1996-05-01

206

NUCLEAR REACTOR CONTROL SYSTEM  

DOEpatents

A control system is described for a nuclear reactor using enriched uranium fuel of the type of the swimming pool and other heterogeneous nuclear reactors. Circuits are included for automatically removing and inserting the control rods during the course of normal operation. Appropriate safety circuits close down the nuclear reactor in the event of emergency.

Epler, E.P.; Hanauer, S.H.; Oakes, L.C.

1959-11-01

207

Basic Nuclear Physics.  

ERIC Educational Resources Information Center

|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…

Bureau of Naval Personnel, Washington, DC.

208

Living with nuclear weapons  

Microsoft Academic Search

At Harvard President Derek Bok's request, six Harvard professors explain nuclear arms issues to help citizens understand all sides of the national security debates. The goal is to encourage public participation in policy formulation. The book emphasizes that escapism will not improve security; that idealistic plans to eliminate nuclear weapons are a form of escapism. Learning to live with nuclear

A. Carnesale; P. Doty; S. Hoffmann; S. P. Huntington; J. S. Jr. Nye; S. D. Sagan

1983-01-01

209

Security with nuclear weapons  

Microsoft Academic Search

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

Karp

1991-01-01

210

Unconventional nuclear weapons  

Microsoft Academic Search

Of the countless scenarios of terrorist mayhem, none quickens the pulse quite like the menace of a nuclear bomb. In light of the low-tech but catastrophic attacks on the World Trade Centre, building a nuclear bomb suddenly seems an unnecessarily difficult and risky proposition. Why build a bomb when there are far cheaper and simpler ways of waging nuclear terror?

G. Zorpette; S. Miller

2001-01-01

211

Nuclear Test Program  

Microsoft Academic Search

An interview with Dr. Robert W. Kuckuck, Deputy Associate Director for Nuclear Testing, is presented which surveys the Lawrence Livermore National Laboratory's efforts in nuclear testing, the need for testing, and the role of testing in the overall weapon design process. The complex activities coordinated in the fielding of a nuclear test at the Nevada Test Site are described. Advances

L. j. Ferderber; P. Adye; J. M. Bruner; W. Clements; L. de Vore; D. P. Hendry; R. D. Kirvel; E. M. ONeal; S. O. Taft

1986-01-01

212

URANIUM DIOXIDE NUCLEAR FUEL  

Microsoft Academic Search

Nuclear fuel making is a new and still not-too-large addition to the ; chemical industry. But fuel producers are optimistic, look more to future needs ; than to current requirements. Uranium dioride is the most popular nuclear fuel ; today, and will probably stuy in first place for some time. Mallinokrodt Nuclear ; was the first commercial UOâ producer. At

Chester Placek; Edward North

1960-01-01

213

Nuclear fission and multifragmentation  

SciTech Connect

The many-body nuclear decay known as multifragmentation is considered as a process competing with nuclear fission. It is shown that, in the particular case of disintegration of {sup 238}U by relativistic protons, the two processes occur simultaneously in the same nuclear reaction. 5 refs., 5 figs.

Zhdanov, A.A.; Solyakin, G.E. [Konstantinov Institute of Nuclear Physics, Gatchina (Russian Federation); Obukhov, A.I. [Khlopin Radium Institute, St. Petersburg (Russian Federation)

1994-07-01

214

Nuclear Shell Structure  

Microsoft Academic Search

There is convincing evidence from the study of nuclear stabilities, magnetic moments, spins, and from other sources, that there is a marked regularity of nuclear properties, particularly clearly shown by breaks at 2, 8, 20, 28, 50, 82 and 126 protons or neutrons. This is explained in terms of an individual level model of nuclear structure similar to the model

M H L Pryce

1954-01-01

215

Chinese nuclear forces, 2011  

Microsoft Academic Search

Today, China is the only one of five original nuclear weapon states that is increasing its nuclear arsenal. According to some estimates, the country could “more than double” the number of warheads on missiles that could threaten the United States by the mid-2020s. Earlier this year, China published a defense white paper, which repeated its nuclear policies of maintaining a

Hans M. Kristensen; Robert S. Norris

2011-01-01

216

Nuclear Proliferation: Diminishing Threat.  

National Technical Information Service (NTIS)

An apparent paradox is emerging in nuclear proliferation. On one hand, the technical barriers to entry into the nuclear club have been progressively eroded; yet the drive to obtain nuclear weapons has been declining. The paper reviews the progress of prol...

W. H. Kincade

1995-01-01

217

British nuclear policymaking  

Microsoft Academic Search

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

C. J. Bowie; A. Platt

1984-01-01

218

Nuclear proliferation: Diminishing threat  

Microsoft Academic Search

An apparent paradox is emerging in nuclear proliferation. On one hand, the technical barriers to entry into the nuclear club have been progressively eroded; yet the drive to obtain nuclear weapons has been declining. The paper reviews the progress of proliferation and non-proliferation and examines the debate over both. It then examines the evolution of anti-proliferation measures, chiefly those of

Kincade

1995-01-01

219

Are nuclear weapons obsolete  

Microsoft Academic Search

The threat of a nuclear winter and the hypothetical evidence from Carl Sagan and other scientists that even a relatively small and contained nuclear war could threaten the survival of the human species lead the author to urge a radical reduction in the number of nuclear weapons. The importance of this evidence, however, is in the reminder of how incomplete

Weissbourd

2009-01-01

220

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.

Noto, Victor

2003-10-31

221

Iran and nuclear ambiguity  

Microsoft Academic Search

A comparison between Iran's current nuclear efforts and those of the pro-Western regime of Shah Reza Pahlavi shows that Iranian ambitions for a full-fledged civilian nuclear programme have remained relatively constant for nearly half a century. Today, fuel cycle technology provides Iran with a latent nuclear weapon's potential. However, US concerns about an Iranian bomb, which began in the early

Ivanka Barzashka; Ivan Oelrich

2012-01-01

222

Nuclear beta decay  

Microsoft Academic Search

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

H. Behrens; W. Bühring

1971-01-01

223

Pakistan's nuclear development  

Microsoft Academic Search

The history of Pakistan's nuclear development is a major example of the clandestine acquisition of reprocessing and uranium enrichment equipment in defiance of the international non-proliferation regime. Pakistan at present practices a policy of ''nuclear ambiguity'': it has the capability to make nuclear weapons but carefully avoids demonstrating that capability; and turns this ambiguous position to its advantage in changing

1987-01-01

224

Nuclear Merchant Ship Propulsion.  

National Technical Information Service (NTIS)

The operation of about 300 nuclear naval vessels has proven the feasibility of nuclear ship propulsion. Until now six non military ships have been built or are under construction. In the Soviet Union two nuclear icebreakers are in operation, and a third o...

E. Schroeder W. Jager H. G. Schafstall

1977-01-01

225

Effects of nuclear war  

Microsoft Academic Search

The author reviews the subject rising the following topics and subtopics: I. Nuclear explosions: heat, nuclear radiation, and radioactive fallout; II. Effects: radiation sickness, burns, blast injuries, and equivalent areas of death; III. Nuclear war: battlefield, regional, intercontinental - counterforce, and intercontinental - counter-city and industry. There are two appendices. 34 references, 32 figures.

von Hippel

1983-01-01

226

Deterrence of Nuclear Terror  

Microsoft Academic Search

Nuclear proliferation, lax security standards in the storage of fissile materials, and international apathy in the prosecution of terrorists make nuclear terror a serious threat to the United States and its allies, yet no doctrine of retaliation has been established. To decrease the probability of terrorist use of nuclear weapons, a doctrine of retaliation—a negligence doctrine—should be considered. If the

Anders Corr

2005-01-01

227

MSF nuclear desalination  

Microsoft Academic Search

Nuclear desalination couldprovide aviable and sustainable option forthe supply of energy and freshwater. A number of nuclear desalination systems have already been established and proved to be reliable. Indeed, recent experience in several Asian countries (e.g., China, India, Japan, and Pakistan) demonstrates a potential for a promising future for largescale construction and operation of nuclear desalination complexes in arid and

Ron S. Faibish; Hisham Ettouney

2003-01-01

228

Teaching Nuclear History.  

ERIC Educational Resources Information Center

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

Holl, Jack M.; Convis, Sheila C.

1991-01-01

229

76 FR 37034 - Proposed Modification of the Las Vegas, NV, Class B Airspace Area; Public Meetings; Correction  

Federal Register 2010, 2011, 2012, 2013

...Procedures, and Bill Ruggiero, Support Manager Las Vegas, TRACON, 699 Wright Brothers Lane, Las Vegas, NV 89119; telephone...Procedures, and Bill Ruggiero, Support Manager Las Vegas, TRACON, 699 Wright Brothers Lane, Las Vegas, NV 89119;...

2011-06-24

230

Nuclear economics: Issues and facts.  

National Technical Information Service (NTIS)

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 ...

C. R. Hudson

1993-01-01

231

Nuclear data newsletter. No. 19.  

National Technical Information Service (NTIS)

This issue of the Nuclear Data Newsletter dated September 1994 contains information on the following topics: WRENDA 93/94, online nuclear data service, data indexes and bibliographies, new nuclear data libraries received, a list of publications on nuclear...

1994-01-01

232

Las Opciones Reales y su influencia en la valoración de empresas  

Microsoft Academic Search

Las opciones reales son derechos que las empresas poseen sobre determinados activos y que les permiten adaptarse al entorno con mayor flexibilidad y soportando menores riesgos. Desde la perspectiva de las opciones reales, el activo total de la empresa se compone de las inversiones ejecutadas y en funcionamiento y de sus oportunidades futuras de inversión. Por tanto, se considera que

Manuel Espitia Escuer; Gema Pastor Agustín

2003-01-01

233

Effects of linear alkylbenzene sulfonate (LAS) on the adsorption behaviour of phenanthrene on soils  

Microsoft Academic Search

Experimental measurements of adsorption of phenanthrene were made at 25°C with and without the presence of linear alkylbenzene sulfonate (LAS) on two soils from Shenyang, P. R. China and LUFA, Speyer, Germany. Effects of LAS on the adsorption of phenanthrene were studied in LAS concentration range around its critical micelle concentration (cmc) with emphasis on low LAS levels which are

Ziqing Ou; Ayfer Yediler; Yaowu He; Antonius Kettrup; Tieheng Sun

1995-01-01

234

Anaerobic treatment of sludge: focusing on reduction of LAS concentration in sludge  

Microsoft Academic Search

Anaerobic degradation of linear alkylbenzene sulfonates (LAS) was tested in continuous stirred tank reactors (CSTR). LAS12 was used as a model compound and was spiked on sewage sludge. The experiments clearly showed that transformation of LAS12 occurred under anaerobic conditions. The degree of transformation varied between 14% and 25%. HPLC analysis showed that disappearance of LAS12 was followed by the

F. Haggensen; A. S. Mogensen; I. Angelidaki; B. K. Ahring

2002-01-01

235

VARIABLES SIGNIFICATIVAS EN LAS RELACIONES VIOLENTAS EN PAREJAS JÓVENES: UNA REVISIÓN  

Microsoft Academic Search

Resumen La violencia en las parejas jóvenes es un precursor de la violencia en las pare- jas adultas. En las parejas jóvenes la violencia suele ser psicológica, plantearse de forma sutil y ser menos grave que en las parejas en la vida adulta. Por lo que se refiere a los agresores, la violencia es más frecuente cuando hay ciertas variables

Itxaso González-Ortega; Enrique Echeburúa; Paz de Corral

2008-01-01

236

Nuclear data online  

SciTech Connect

The National Nuclear Data Center (NNDC) Online Data Service, available since 1986, is continually being upgraded and expanded. Most files are now available for access through the World Wide Web. Bibliographic, experimental, and evaluated data files are available containing information no neutron, charged-particle, and photon-induced nuclear reaction data, as well as nuclear decay and nuclear structure information. An effort is being made through the world-wide Nuclear Reaction Data Centers collaboration to make the charged-particle reaction data libraries as complete as possible. The data may be downloaded or viewed both as plots or as tabulated data. A variety of output formats are available for most files.

McLane, V.

1997-12-31

237

Introduction to Nuclear Astrophysics  

SciTech Connect

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.

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

2010-03-01

238

Nuclear energy and the ballot  

Microsoft Academic Search

Nuclear decisions were first made at the Federal level, but as development increased nuclear energy's visibility, policy decisions have spread into a larger arena. The reason nuclear initiatives were defeated in several states last year, according to the anti-nuclear forces, was due to the heavy campagin financing by nuclear proponents; however, nationwide polling has indicated no serious qualms about nuclear

Barkenbus

1977-01-01

239

76 FR 19148 - Entergy Nuclear Operations, Inc., Entergy Nuclear Vermont Yankee, LLC, Vermont Yankee Nuclear...  

Federal Register 2010, 2011, 2012, 2013

...Entergy Nuclear Operations, Inc., Entergy Nuclear Vermont Yankee, LLC, Vermont Yankee Nuclear Power Station, Receipt of Request...Commission (NRC) take action with regard to the Vermont Yankee Nuclear Power Station (VY). Mr....

2011-04-06

240

Overview of nuclear data  

SciTech Connect

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.

Firestone, R.B.

2003-06-30

241

LAS ESTRUCTURAS SOCIALES DE LA ECONOMÍA: EN PIERRE BOURDIEU  

Microsoft Academic Search

Los últimos acontecimientos dentro y fuera de los Estados Unidos en materia económica llevan a re-pensar el rol que juegan tanto la propiedad inmobiliaria como la propiedad en general dentro de nuestras conceptualizaciones y sistema económico. En ese contexto, se inscribe el trabajo del sociólogo francés Pierre Bourdieu titulado Las Estructuras Sociales de la Economía. Originalmente, el autor comienza uno

Maximiliano E. Korstanje

2009-01-01

242

Las Máscaras Del Héroe: Radiografía De Un Anti-Héroe  

Microsoft Academic Search

Las máscaras del héroe depicts Spanish society from the Second Republic to the start of the Civil War, a period when Spain was torn by poverty and immorality. This intertextual historical novel portrays figures such as Pedro Luis de Gálvez, the last of the bohemians and a failed writer. We encounter Gálvez through the first-person narration of Navales, who hates

Emilio Ramón

2009-01-01

243

Linking Cooperation and Sustainable Development: The Las Nubes Coffee Partnership  

Microsoft Academic Search

York University, the Tropical Science Center (TSC), and COOPEAGRI, R.L. of Costa Rica and Timothy's World Coffee have formed a unique partnership to advance rural sustainable development in the Las Nubes region of southern Costa Rica. York's Faculty of Environmental Studies (FES) and TSC have promoted the creation of a biological corridor along the Río Peñas Blancas, between the montane

Howard E. Daugherty; Stefanie J. Hall; Paula Pelaez

244

Las Rocas Nos Cuentan (Rocks Tell Their Stories)  

ERIC Educational Resources Information Center

|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."…

Llerandi-Roman, Pablo A.

2012-01-01

245

Linear alkylbenzene sulfonates (LAS) in the terrestrial environment  

Microsoft Academic Search

The occurrence of linear alkylbenzene sulfonates (LAS) in a series of soil samples originating from the municipality of Roskilde has been studied. The study includes soil samples from eight different locations with different histories: a preserved natural area that has not been cultured for 50–100 years, a soil that has been ecologically cultured for 40 years, a soil sustainably manured

Lars Carlsen; Mai-Britt Metzon; Jeanette Kjelsmark

2002-01-01

246

Modeling Surfactant LAS Influenced PAHs Migration in Soil Column  

Microsoft Academic Search

The objective of the present work was to study the transport of Polycyclic Aromatic Hydrocarbons (PAHs) in artificially contaminated and oil field soil columns while Linear Alkylbenzene Sulfonate (LAS) was used as leaching solvent. Through soil column leaching experiments, the through curves (BTCs) of the tracer (Br?) and PAHs were obtained. The batch equilibrium experiments were conducted. The partition coefficients,

J. Chen; X. J. Wang; J. D. Hu; S. Tao

2006-01-01

247

El chisme y las representaciones sociales de género y sexualidad  

Microsoft Academic Search

Este documento es resultado de una investigación realizada con estudiantes adolescentes que cursan el nivel medio superior en la Universidad Autónoma Chapingo (UACH), la cual imparte ingenierías en ciencias agronómicas y afines. El número de estudiantes varones es prácticamente tres veces superior al de las mujeres y ambos conviven en sus actividades escolares de tiempo completo. El objeto del trabajo

MARÍA EUGENIA; CHÁVEZ ARELLANO; VERÓNICA VÁZQUEZ GARCÍA; AURELIA DE LA ROSA REGALADO

248

Modeling of Nonpoint Source Pollution in the Las Vegas Valley  

Microsoft Academic Search

The point sources of pollution (including wastewater treatment plants) within urban areas are well known. However, the contribution of nonpoint source pollution to receiving waterbodies is not as well understood. In this study, the contributions of nonpoint source runoff is evaluated and compared to the loadings from the wastewater treatment facilities in the Las Vegas Valley of southern Nevada. The

M. Reginato; T. C. Piechota

2001-01-01

249

The petrology of the Las Canadas volcanoes, Tenerife, Canary islands  

Microsoft Academic Search

Tenerife is the largest of the seven Tertiary to Recent volcanic islands that make up the Canary Archipelago. The island is composed of volcanics belonging to the basanitetrachyte-phonolite assemblage that characterises many Atlantic islands. The most voluminous development of intermediate and salic volcanics has been in the centre of the island where the Las Canadas volcanoes arose upon a basement

William Ian Ridley

1970-01-01

250

Las Vegas Serves up Biodiesel for Local Schools  

SciTech Connect

This 2-page Clean Cities fact sheet describes the use of biodiesel as a fuel source in buses by the Clark County School District, located in Las Vegas, NV. It includes information on the history of the program, along with contact information for the local Clean Cities Coordinator and Clark County School District.

Not Available

2004-04-01

251

Geology of Las Vegas, Nevada, United States of America  

Microsoft Academic Search

Las Vegas is one of the fastest growing cities in the US. Its regional geologic setting is in the Basin and Range geomorphic province and in the Sevier orogenic belt. The city itself lies in a broad north-south valley formed by coalescing alluvial fans and lake beds which give rise to several soil and foundation problems. Although destructive earthquakes have

R. V. Wyman; M. Karakouzian; V. Bax-Valentine; L. Peterson; S. Palmer; D. B. Slemmons

1993-01-01

252

Mojave mirages: gender and performance in Las Vegas  

Microsoft Academic Search

The article explores the permeable boundaries between image, perception, experience, and realities through a series of personal observations on gender and performance in Las Vegas. The author'observations on this resort destination in the middle of the Mojave Desert are mingled with the narratives of women who came to the area during and after World War II. Lucrative jobs in wartime

Joanne L. Goodwin

2002-01-01

253

Source Water Assessment for the Las Vegas Valley Surface Waters  

Microsoft Academic Search

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

S. P. Albuquerque; T. C. Piechota

2003-01-01

254

NUCLEAR DATABASES FOR REACTOR APPLICATIONS.  

SciTech Connect

The National Nuclear Data Center (NNDC): An overview of nuclear databases, related products, nuclear data Web services and publications. The NNDC collects, evaluates, and disseminates nuclear physics data for basic research and applied nuclear technologies. The NNDC maintains and contributes to the nuclear reaction (ENDF, CSISRS) and nuclear structure databases along with several others databases (CapGam, MIRD, IRDF-2002) and provides coordination for the Cross Section Evaluation Working Group (CSEWG) and the US Nuclear Data Program (USNDP). The Center produces several publications and codes such as Atlas of Neutron Resonances, Nuclear Wallet Cards booklets and develops codes, such as nuclear reaction model code Empire.

PRITYCHENKO, B.; ARCILLA, R.; BURROWS, T.; HERMAN, M.W.; MUGHABGHAB, S.; OBLOZINSKY, P.; ROCHMAN, D.; SONZOGNI, A.A.; TULI, J.; WINCHELL, D.F.

2006-06-05

255

The convention planning process: Potential impact of a high-level Nuclear Waste Repository in Nevada  

Microsoft Academic Search

This report presents results from two studies that test whether a high level nuclear waste repository sites at Yucca Mountain, Nevada will diminish the willingness of meeting planners to schedule conventions, trade shows, and other meetings in Las Vegas. The first study, a focus group interview with nine meeting planners from the Philadelphia area, found little evidence that planners` selection

H. Kunreuther; D. Easterling; P. Kleindorfer

1988-01-01

256

Offsite environmental monitoring report. Radiation monitoring around United States nuclear test areas, calendar year 1980  

Microsoft Academic Search

The US Environmental Protection Agency's (EPA) Environmental Monitoring Systems Laboratory in Las Vegas (EMSL-LV) 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 meteorological measurements, ground and airborne radiation monitoring teams, and special briefings to the Test Controller's Advisory Panel. Test-related radioactivity

D. D. Smith; R. F. Grossman; W. D. Corkern; D. J. Thome; R. G. Patzer; J. L. Hopper

1981-01-01

257

Una mímesis del tiempo: Fray Bartolomé de Las Casas y las formas de una gramática del relato  

Microsoft Academic Search

History of the Indies, by Friar Bartolomé de Las Casas, was written over a thirty-year span, and is a text willing to include everything that happened in that timeframe. The History is also a text interrupted by constant digressions that show a particular emplotment that operates by accumulation in order to reproduce in the reading time, the writing time. This

Mariana C. Zinni

2012-01-01

258

Nuclear Test Program  

SciTech Connect

An interview with Dr. Robert W. Kuckuck, Deputy Associate Director for Nuclear Testing, is presented which surveys the Lawrence Livermore National Laboratory's efforts in nuclear testing, the need for testing, and the role of testing in the overall weapon design process. The complex activities coordinated in the fielding of a nuclear test at the Nevada Test Site are described. Advances in nuclear testing technology are highlighted, including: x-ray spectroscopy, development of electro-optical data transmission systems, electro-optical downhole imaging systems, image data acquisition, diagnostics using charged-particle detectors, analyzing of radioactive nuclides, isotope mass spectrometry for nuclear test diagnostics, canister design, emplacing nuclear event cables with an automated system, the digital downhole surveyor, and measurements on subsurface rock. (LEW)

Ferderber, L.j.; Adye, P.; Bruner, J.M.; Clements, W.; de Vore, L.; Hendry, D.P.; Kirvel, R.D.; O'Neal, E.M.; Taft, S.O. (eds.)

1986-01-01

259

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.

260

Nuclear imaging in pediatrics  

SciTech Connect

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

Siddiqui, A.R.

1985-01-01

261

South Asia's Nuclear Decade  

Microsoft Academic Search

Ten years ago this May, India shattered the global non-proliferation regime by conducting five nuclear tests. Pakistan followed its arch-rival's lead. The United States had sought to discourage India and Pakistan from developing nuclear weapons for almost a quarter century, from India's so-called peace- ful nuclear explosion in 1974 until its 1998 tests. The US Congress had passed several laws

Bruce Riedel

2008-01-01

262

[Nuclear News -- Power  

SciTech Connect

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

NONE

1999-11-01

263

The nuclear terrorist state  

Microsoft Academic Search

The atomic attacks on Hiroshima and Nagasaki are now fifty years behind us. Yet we're still struggling with the reality of the “bomb” and a U.S. nuclear national?security state that operates secretly, wielding nuclear weapons as a policy instrument. Since the Japanese bombings, the U.S. has used nuclear weapons to achieve various political ends. Most of them violate international law,

David Kauzlarich; Ronald C. Kramer

1995-01-01

264

Nuclear Energy & Energy Security  

Microsoft Academic Search

Safety issues related to use of nuclear energy and secure operation of nuclear installations are mail stones of great importance.\\u000a Although none of technologies producing energy are absolutely safe it is obvious that technology “extracting” the electricity\\u000a from nuclear fuel needs to apply relatively higher level safety and\\u000a security. Risk of safety operation depends on many factors and varies country-bycountry

Jumber Mamasakhlisi

265

Assessing the nuclear age  

Microsoft Academic Search

This book presents papers on nuclear weapons and arms control. Topics considered include historical aspects, the arms race, nuclear power, flaws in the non-proliferation treaty, North-South issues, East-West confrontation, Soviet decision making with regard to national defense, US and Soviet perspectives on national security, ballistic missile defense (''Star Wars''), political aspects, nuclear winter, stockpiles, US foreign policy, and military strategy.

L. Ackland; S. McGuire

1986-01-01

266

Leukaemia and Nuclear Establishments  

Microsoft Academic Search

It is fifteen years since a television programme in the UK, called Windscale, the Nuclear Laundry, introduced the possibility that certain nuclear installations, notably BNFL’s Sellafield nuclear reprocessing site in Cumbria,\\u000a England, may be associated with excesses of childhood leukaemia. Since then a great deal of research has been carried out\\u000a to determine, first whether the association is a real

Malcolm C. Grimston

267

Prohibiting nuclear weapons: initiatives towards global nuclear disarmament  

Microsoft Academic Search

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

J. R. Shanebrook

1999-01-01

268

Model Action Plan for Nuclear Forensics and Nuclear Attribution  

Microsoft Academic Search

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

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

2004-01-01

269

Nuclear free zone  

SciTech Connect

Health professionals have played a leading role in alerting and educating the public regarding the danger of nuclear war which has been described as the last epidemic our civilization will know. Having convinced most people that the use of nuclear weapons would mean intolerable consequences, groups such as Physicians for Social Responsibility have focused on the second critical question how likely is it that these weapons will be used. The oultlook is grim. This article describes the nuclear free zone movement, explores relevant legal questions, and shows how the political potential of nuclear free zones threatens to open a deep rift in the American constitutional system.

Christoffel, T.

1987-07-01

270

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.

271

Comprehensive Nuclear Materials  

SciTech Connect

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.

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

272

Nuclear reactor apparatus  

DOEpatents

A lifting, rotating and sealing apparatus for nuclear reactors utilizing rotating plugs above the nuclear reactor core. This apparatus permits rotation of the plugs to provide under the plug refueling of a nuclear core. It also provides a means by which positive top core holddown can be utilized. Both of these operations are accomplished by means of the apparatus lifting the top core holddown structure off the nuclear core while stationary, and maintaining this structure in its elevated position during plug rotation. During both of these operations, the interface between the rotating member and its supporting member is sealingly maintained.

Wade, Elman E. (Ruffs Dale, PA)

1978-01-01

273

Pakistan's nuclear development  

SciTech Connect

The history of Pakistan's nuclear development is a major example of the clandestine acquisition of reprocessing and uranium enrichment equipment in defiance of the international non-proliferation regime. Pakistan at present practices a policy of ''nuclear ambiguity'': it has the capability to make nuclear weapons but carefully avoids demonstrating that capability; and turns this ambiguous position to its advantage in changing circumstances. This book traces the development of Pakistan's nuclear capability. It examines the international assistance Pakistan got in developing its nuclear capability, revealing evidence of Chinese, US and other Islamic states involvement. It analyses the motives for the development, reviewing the changing attitude of successive regimes, and concludes by exploring the relationship between Pakistan's nuclear development and regional security. CONTENTS. Acknowledgements; abbreviations; introduction; the framework of study. 1953-59; the origins and early history of pakistani nuclear activities; Dr. Usmani Takes Over, 1960-71. Pakistan's nuclear posture, 1950s-1960s. Bhutto and the bomb, 1972-77; neither eating grass nor making the bomb. Zia's bomb: Riding the nuclear tiger; concluding note: What Should be Done; appendices; index.

Kapur, A.

1987-01-01

274

The Nuclear Industry.  

National Technical Information Service (NTIS)

Content: Raw fuel materials; Materials processing and fabrication; Nuclear components and equipment; Reactors; Radioisotopes; Materials reprocessing; Plowshare; Services; Assistance for industry at AEC field offices. (Author)

1966-01-01

275

Technologists for Nuclear Medicine  

ERIC Educational Resources Information Center

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

Barnett, Huey D.

1974-01-01

276

Controlling nuclear proliferation  

SciTech Connect

Nuclear non-proliferation policy depends on the 1968 Non-Proliferation Treaty, in which countries promise not to acquire nuclear weapons in exchange for open access to peaceful nuclear technology, and a system of international safeguards that are imposed on exported nuclear equipment and facilities operated by parties to the treaty. Critics have feared all along that non-nuclear countries might circumvent or exploit the system to obtain nuclear weapons and that the Atoms for Peace plan would spread the very technology it sought to control. The nuclear weapons states would like everyone else to believe that atomic bombs are undesirable, but they continue to rely on the bombs for their own defense. Israel's raid on Iraq's nuclear reactor focused world attention on the proliferation problem and helped to broaden and sterengthen its prospects. It also highlighted the weakness that there are no effective sanctions against violators. Until the international community can ageee on enforcement measures powerful enough to prevent nuclear proliferation, individual countries may be tempted to follow Israel's example, 19 references.

Sweet, W.

1981-07-17

277

Geophysical Studies of the Las Vegas Urban Corridor  

NSDL National Science Digital Library

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

2001-01-01

278

Near-Ground optical turbulence measurements at Cerro Las Campanas  

NASA Astrophysics Data System (ADS)

We report preliminary results from Near-Ground optical turbulence measurements carried out at Cerro Las Campanas, the future site of the Giant Magellan Telescope (GMT), using MooSci (Moon Scintillomenter), DIMM (Differential Image Motion Monitor) and MASS (Multiple Aperture Scintillation Sensor), focusing on the effects above the future GMT enclosure. This campaign will continue with future observations of the NGL turbulence in order to better model the adaptive optics performance and aid in the design of the GMT AO instrumentation

Prieto, G.; Berdja, A.; Thomas-Osip, J. E.

2011-11-01

279

Solar hot water system installed at Las Vegas, Nevada  

NASA Astrophysics Data System (ADS)

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.

1981-01-01

280

Geology of Las Vegas, Nevada, United States of America  

SciTech Connect

Las Vegas is one of the fastest growing cities in the US. Its regional geologic setting is in the Basin and Range geomorphic province and in the Sevier orogenic belt. The city itself lies in a broad north-south valley formed by coalescing alluvial fans and lake beds which give rise to several soil and foundation problems. Although destructive earthquakes have not occurred in the Las Vegas area in modern times, the record is very short. Major earthquakes could have taken place in the past when the area was unoccupied except for a few nomadic tribes. Studies are underway to better define the seismicity. Although the climate is hot and dry, flash flooding occurs frequently from late summer thunderstorms and torrential rains. The Regional Flood Control District is actively constructing retention basins and drainage improvements for diversion and protection from such floods. Water supply is a problem for the increasing population. The groundwater supply has long been overdrawn, and the allotment to Nevada under the Colorado River Compact will be completely utilized in the near future. Las Vegas has faced the problems of solid waste disposal, water treatment, rational water use, flooding and earthquakes - all of which are related to the unique geologic and geomorphic setting.

Wyman, R.V.; Karakouzian, M. (Univ. of Nevada, Las Vegas (United States)); Bax-Valentine, V. (Clark County Regional Flood Control District, Las Vegas, NV (United States)); Peterson, L.; Palmer, S. (Kleinfelder, Las Vegas, NV (United States)); Slemmons, D.B.

1993-03-01

281

GIS methodology for quantifying channel change in Las Vegas, Nevada  

USGS Publications Warehouse

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

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

2007-01-01

282

Nuclear Energy and the Environment.  

ERIC Educational Resources Information Center

|"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,"…

International Atomic Energy Agency, Vienna (Austria).

283

Countering the Nuclear Terrorist Threat  

Microsoft Academic Search

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

Vantine

2002-01-01

284

Gordon Conference on Nuclear Research  

SciTech Connect

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.

Austin, S.M.

1983-09-01

285

United States Nuclear Export Controls  

Microsoft Academic Search

This article will explore the U.S. nuclear export controls regime. It will initially discuss controls affecting the export of nuclear material, facilities, and specially designed components of nuclear facilities. This section will specifically consider export licensing procedures and requirements, agreements for nuclear cooperation, the specific export criteria for major nuclear cooperation, as well as the necessary policy determination. Then the

Katherine D. McManus; Marshall Jr. Harry R

1980-01-01

286

Nuclear fuel cycle information workshop  

SciTech Connect

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.

Not Available

1983-01-01

287

Can nuclear weapons be abolished?  

Microsoft Academic Search

One of the greatest threats to virtually all human rights is a global or regional nuclear war. For so long as nuclear weapons exist, there is a risk that they may be used. If nuclear war is to be avoided, therefore, nuclear weapons must be abolished. The abolition of nuclear weapons by international treaty is topical because for the first

Frank Barnaby

1998-01-01

288

Nuclear Energy and the Environment.  

ERIC Educational Resources Information Center

"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,"…

International Atomic Energy Agency, Vienna (Austria).

289

Nuclear information services at the National Nuclear Data Center  

SciTech Connect

The numeric and bibliographic nuclear data bases maintained by the National Nuclear Data Center and access to these data bases will be described. The U.S. Nuclear Data and Reaction Data Networks will also be briefly described.

Burrows, T.W.; Tuli, J.K.

1996-10-01

290

Nuclear data needs for application in nuclear criticality safety programs.  

National Technical Information Service (NTIS)

In nuclear criticality safety applications, a number of important uncertainties have to be addressed to establish the required criticality safety margin of a nuclear system. One source of these uncertainties is the basic nuclear data used to calculate the...

L. C. Leal R. M. Westfall W. C. Jordan R. Q. Wright

1995-01-01

291

Source Water Assessment for the Las Vegas Valley Surface Waters  

NASA Astrophysics Data System (ADS)

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.

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

2003-12-01

292

High energy nuclear structures  

SciTech Connect

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.

Boguta, J.; Kunz, J.

1984-03-09

293

Nuclear power plant  

Microsoft Academic Search

A nuclear power plant is disclosed with a reactor building, a fuel building, buildings for the ancillary nuclear, electrical and safety equipment, and a building for turbo-electric machines. The group of buildings is in the general shape of a T, with the fuel and ancillary equipment buildings in line at both sides of the reactor building, and the engine building

Magnin

1983-01-01

294

Managing NATO's nuclear dilemma  

Microsoft Academic Search

The difference between American and European interests is at the heart of the North Atlantic Treaty Organization (NATO) dilemma over the deployment of battlefield nuclear weapons in Europe. There is no solution to the dilemma, but it can be managed with a better definition of the role of NATO's theater nuclear forces (TNF) and with more attention to how decisions

Treverton

2009-01-01

295

Nuclear Power Plants. Revised.  

ERIC Educational Resources Information Center

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

Lyerly, Ray L.; Mitchell, Walter, III

296

Israel's nuclear ambiguity  

Microsoft Academic Search

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

A. Cohen; B. Frankel

1987-01-01

297

Russian's nuclear gambit  

Microsoft Academic Search

The Soviet strategy is to use arms control agreements to neutralize Western Europe by separating it from the US by building political pressure to allow the Soviets to have nuclear superiority. Rostow believes that an adequate nuclear deterrent and a solid alliance system can withstand the pressure of the Soviet arms buildup and propaganda without succumbing to defeatist view. Soviet-American

Rostow

2009-01-01

298

Gaseous Nuclear Rocket.  

National Technical Information Service (NTIS)

The nuclear rocket for extraterrestrial flight is in the form of a gaseous nuclear reactor. One or more streams of a working fluid are introduced concentrically adjacent to a gaseous fissile material in a heating chamber or cell. Introduction of a working...

F. E. Rom

1965-01-01

299

Nuclear medicine annual, 1987  

Microsoft Academic Search

Radionuclide evaluation of brain death, bone imaging with SPECT, and lymphoscintigraphy are among the topics covered in Nuclear Medicine Annual, 1987. In addition, the book includes reviews of the role of nuclear medicine in the diagnosis of the Acquired Immunodeficiency Syndrome (AIDS) and in the management of patients with acute myocardial infarction. Reports describe advances in radionuclide and magnetic resonance

L. M. Freeman; H. S. Weissmann

1987-01-01

300

Talk About Nuclear Power  

ERIC Educational Resources Information Center

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

Tremlett, Lewis

1976-01-01

301

Radionuclides and Nuclear Waste  

NSDL National Science Digital Library

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.

Sherman, David M.; Bristol, University O.

302

PROPERTIES OF NUCLEAR MATTER  

Microsoft Academic Search

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

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

1958-01-01

303

Vertical nuclear proliferation.  

PubMed

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

Sidel, Victor W

304

Homemade nuclear bomb syndrome  

Microsoft Academic Search

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

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

1977-01-01

305

Trident and nuclear law  

Microsoft Academic Search

On 8 July 1996, the International Court of Justice gave its Advisory Opinion on the legality of the use or threat of nuclear weapons, in response to a resolution of the General Assembly of the United Nations. This paper considers the status of Trident, now the United Kingdom's only nuclear weapon system, in the light of the Opinion. While it

Rupert Ticehurst

1998-01-01

306

Finland's nuclear waste solution  

Microsoft Academic Search

This article speaks about the nuclear waste solution in Finland. Posiva, the Finnish company building an underground repository here, says it knows how to imprison nuclear waste for 100 000 years. These multimillennial thinkers are confident that copper canisters of Scandinavian design, tucked into that bedrock, will isolate the waste in an underground cavern impervious to whatever the future brings:

Sandra Upson

2009-01-01

307

Nuclear Pulse Propulsion  

Microsoft Academic Search

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

J. C. Nance

1965-01-01

308

Growth of nuclear power  

Microsoft Academic Search

The US Atomic Energy Commission's gaseous diffusion plants (GDP) are the principal uranium enriching facilities in the free world. Since all US and many non-US civilian nuclear power plants will require enriched uranium for fuel, the status of electric utility plans for installation of nuclear plants is of great importance in the long-term planning of the GDP operations. For this

F. C. Huffman; H. G. Grisham; M. M. Styles

1972-01-01

309

Effects of nuclear weapons  

Microsoft Academic Search

The most recent data concerning the effects associated with explosions of nuclear weapons are presented. The data have been obtained from observations made of effects of nuclear bombing in Japan and tests carried out at the Eniwetok Proving Grounds and Nevada Test Site, as well as from experiments with conventional explosives, and mathematical calculations. The volume is intended for use

Glasstone

1957-01-01

310

Vented nuclear fuel element  

DOEpatents

A nuclear fuel cell for use in a thermionic nuclear reactor in which a small conduit extends from the outside surface of the emitter to the center of the fuel mass of the emitter body to permit escape of volatile and gaseous fission products collected in the center thereof by virtue of molecular migration of the gases to the hotter region of the fuel.

Grossman, Leonard N. (Livermore, CA); Kaznoff, Alexis I. (Castro Valley, CA)

1979-01-01

311

Nuclear Energy's Renaissance  

Microsoft Academic Search

Nuclear energy is about to enter its renaissance. After almost 30 years of new plant construction dormancy, utilities are seriously preparing for ordering new plants in the next two years. This resurgence in interest is based on improved plant performance, new Nuclear Regulatory Commission licensing processes, significant incentives introduced by Congress in the Energy Policy Act of 2005 to encourage

Andrew C. Kadak

2006-01-01

312

Labor and nuclear power  

Microsoft Academic Search

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

R. Logan; D. Nelkin

1980-01-01

313

Nuclear axion decay  

Microsoft Academic Search

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

Augusto Barroso; Nimai C. Mukhopadhyay

1981-01-01

314

Nuclear ?-decay. II  

Microsoft Academic Search

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

Lothar Schülke

1964-01-01

315

Nuclear-Powered Debate.  

ERIC Educational Resources Information Center

|Describes an exercise to develop interest and understanding about nuclear energy in which students make presentations regarding a proposal to build a hypothetical nuclear power plant. Students spend two weeks researching the topic; give testimony before a "Senate Energy Committee"; and vote on the proposal. Background information is provided.…

Arce, Gary

1992-01-01

316

Nucleation of nuclear bodies.  

PubMed

The nucleus is a complex organelle containing numerous highly dynamic, structurally stable domains and bodies, harboring functions that have only begun to be defined. However, the molecular mechanisms for their formation are still poorly understood. Recently it has been shown that a nuclear body can form de novo by self-organization. But little is known regarding what triggers the formation of a nuclear body and how subsequent assembly steps are orchestrated. Nuclear bodies are frequently associated with specific active gene loci that directly contribute to their formation. Both coding and noncoding RNAs can initiate the assembly of nuclear bodies with which they are physiologically associated. Thus, the formation of nuclear bodies occurs via recruitment and consequent accumulation of resident proteins in the nuclear bodies by nucleating RNA acting as a seeder. In this chapter I describe how to set up an experimental cell system to probe de novo biogenesis of a nuclear body by nucleating RNA and nuclear body components tethered on chromatin. PMID:23980018

Dundr, Miroslav

2013-01-01

317

Nuclear Power Plants. Revised.  

ERIC Educational Resources Information Center

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

Lyerly, Ray L.; Mitchell, Walter, III

318

Nuclear Power Plant Technician  

ERIC Educational Resources Information Center

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

Randall, George A.

1975-01-01

319

Talk About Nuclear Power  

ERIC Educational Resources Information Center

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

Tremlett, Lewis

1976-01-01

320

Why Go Nuclear?  

Microsoft Academic Search

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

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

2008-01-01

321

Safety of nuclear power  

Microsoft Academic Search

The degree of safety associated with power production by different types of nuclear power plants and with the processing and storage of radioactive wastes is assessed. Nuclear power plant designs incorporate redundant and overlapping safety control systems to guard against component failures and misfunctions. Additional safety systems and special design features are included to minimize the consequences of a wide

J. M. Hendrie

1976-01-01

322

Safety of Nuclear Power  

Microsoft Academic Search

The main questions related to nuclear power development concern effects of small radiation doses typical for the operation of nuclear power plants (NPPs) and hazards of NPP accidents. The last decade has brought many results of large scale epidemiological studies indicating that there are no detrimental effects of low radiation doses. On the contrary, many results indicate that among the

J M Hendrie

1976-01-01

323

Principles of nuclear geology  

Microsoft Academic Search

This book treats the basic principles of nuclear physics and the mineralogy, geochemistry, distribution and ore deposits of uranium and thorium. The application of nuclear methodology in radiogenic heat and thermal regime of the earth, radiometric prospecting, isotopic age dating, stable isotopes and cosmic-ray produced isotopes is covered. Geological processes, such as metamorphic chronology, petrogenesis, groundwater movement, and sedimentation rate

Aswathanarayana

1985-01-01

324

NUCLEAR POWER AND SHIPS  

Microsoft Academic Search

The advantages and disadvantages of nuclear reactors for surface vessels ; and submarines are outlined. Design considerations for reactors, fuel elements, ; moderators, coolants, and power cycles are tabulated and discussed. The special ; economic consideration to be made for nuclear power in merchant ships is also ; discussed. (T.R.H.);

Righton

1958-01-01

325

The nuclear weapons legacy  

Microsoft Academic Search

On the 50th anniversary of the bombings of Hiroshima and Nagasaki, two new reports from the US DOE shed light on nuclear weapons production and its aftermath. This article summarizes and comments on the two reports: Closing the Circle on the Splitting of the Atom: the Environmental Legacy of Nuclear Weapons Production in the United States and What the Department

Stadie

1996-01-01

326

Nuclear magnetic resonance gyroscopes  

Microsoft Academic Search

Nuclear magnetic resonance gyroscopes (NMRGs) detect rotation as a shift in the Larmor precession frequency of nuclear spins. A review of the open literature on NMRGs is presented, which includes an introduction to the spectroscopic techniques that enable NMRGs and a discussion of the design details for several specific NMRGs that have been built.

E. A. Donley

2010-01-01

327

Renewable and nuclear heresies  

Microsoft Academic Search

Renewables are not green. To reach the scale at which they would contribute importantly to meeting global energy demand, renewable sources of energy, such as wind, water and biomass, cause serious environmental harm. Measuring renewables in watts per square metre that each source could produce smashes these environmental idols. Nuclear energy is green. However, in order to grow, the nuclear

Jesse H. Ausubel

2007-01-01

328

Nuclear Weapons and Schools.  

ERIC Educational Resources Information Center

|The growing debate on nuclear weapons in recent years has begun to make inroads into school curricula. Elementary and secondary school teachers now face the important task of educating their students on issues relating to nuclear war without indoctrinating them to a particular point of view. (JBM)|

Howie, David I.

1984-01-01

329

The nuclear option  

Microsoft Academic Search

A development history and current status evaluation are presented for nuclear-thermal rocket propulsion systems applicable to interplanetary flight. While the most advanced current chemical rocket engines, such as the SSMEs of the Space Shuttle, produce specific impulses of the order of 450 secs, a nuclear-thermal rocket engine tested at Los Alamos in 1969 generated 845 secs; such specific impulse improvements

Herken

1992-01-01

330

Nuclear Power Plant Technician  

ERIC Educational Resources Information Center

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

Randall, George A.

1975-01-01

331

POLAND'S FIRST NUCLEAR REACTOR  

Microsoft Academic Search

The first nuclear reactor in Poland which is under construction near the ; Nuclear Research Center in Swierk, near Warsaw, is designed for experimental work ; with high-intensity neutron sources and for production of radioisotopes for ; research in industry and medicine. The reactor uses enriched uranium (10% U\\/sup ; 235\\/) and has a maximum capacity of 2 Mw and

J. Aleksandrowicz; P. Szulc

1958-01-01

332

Development and relationship of nuclear power and nuclear weapons. Evolving an acceptable nuclear power fuel cycle  

Microsoft Academic Search

The public's fear of nuclear energy stems from its concern with the following: (1) nuclear power reactor safety, (2) nuclear waste management, and (3) nuclear weapons. Although not a direct concern of the public, the industry is also concerned about a stable supply of nuclear fuel. Each of the above is examined, and some ways are suggested to mitigate these

Steinberg

1984-01-01

333

Nuclear Density Functional Theory  

SciTech Connect

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.

Stoitsov, Mario [ORNL

2010-01-01

334

World nuclear outlook 1994  

SciTech Connect

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.

NONE

1994-12-01

335

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.

336

Nuclear power safety  

SciTech Connect

The International Atomic Energy Agency, the organization concerned with worldwide nuclear safety has produced two international conventions to provide (1) prompt notification of nuclear accidents and (2) procedures to facilitate mutual assistance during an emergency. IAEA has also expanded operational safety review team missions, enhanced information exchange on operational safety events at nuclear power plants, and planned a review of its nuclear safety standards to ensure that they include the lessons learned from the Chernobyl nuclear plant accident. However, there appears to be a nearly unanimous belief among IAEA members that may attempt to impose international safety standards verified by an international inspection program would infringe on national sovereignty. Although several Western European countries have proposed establishing binding safety standards and inspections, no specific plant have been made; IAEA's member states are unlikely to adopt such standards and an inspection program.

Not Available

1988-01-01

337

World nuclear outlook 1995  

SciTech Connect

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.

NONE

1995-09-29

338

Student Reactions to Nuclear Education.  

ERIC Educational Resources Information Center

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

Christie, Daniel J.; Nelson, Linden

1988-01-01

339

Nuclear Terrorism: Rethinking the Unthinkable.  

National Technical Information Service (NTIS)

Many policymakers and scholars contend that nuclear weapons remain inaccessible to terrorists, and that nuclear means are inconsistent with or disproportionate to their goals. Nevertheless, the historical pattern of nuclear proliferation suggests a trend ...

R. W. Marrs

1994-01-01

340

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

Federal Register 2010, 2011, 2012, 2013

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

2011-06-17

341

Study of Nuclear Physics for Nuclear Fusion  

Microsoft Academic Search

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

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

2000-01-01

342

Nuclear fission sustainability with hybrid nuclear cycles  

Microsoft Academic Search

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

José M. Martínez-Val; Mireia Piera

2007-01-01

343

Nuclear Powerplant Safety: Source Terms. Nuclear Energy.  

ERIC Educational Resources Information Center

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

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

344

Nuclear war, nuclear proliferation, and their consequences  

SciTech Connect

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

Sanruddin, A.K.

1986-01-01

345

Biotransformation of linear alkylbenzene sulfonate (LAS) by Phanerochaete chrysosporium : oxidation of alkyl side-chain  

Microsoft Academic Search

The white rot fungus Phanerochaete chrysosporium, which generally mineralizes substituted aromatics to CO2, transformed linear alkylbenzene sulfonate (LAS) surfactants mainly at their alkyl side chain. Degradation of LAS was evidenced by a zone of clearing on LAS-containing agar plates and colorimetric analysis of liquid cultures. Disappearance of LAS was virtually complete within 10 days in low nitrogen (2.4 mM N),

Jagjit S. Yadav; David L. Lawrence; Barbara A. Nuck; Thomas W. Federle; C. Adinarayana Reddy

2001-01-01

346

Linear alkyl benzene sulphonate (LAS) degradation by immobilized Pseudomonas aeruginosa under low intensity ultrasound  

Microsoft Academic Search

We studied the LAS degradation of immobilized Pseudomonas aeruginosa with low-intensity ultrasonic and the influence of original LAS concentration, pH, rotary velocity and different conditions of low-intensity ultrasonic irradiation on the degradation of LAS. In our experiment, the degradation rate of LAS was the main index. We found that low-intensity ultrasonic irradiation could improve the metabolism of microorganism cells and

Xiang Lijun; Wang Bochu; Li Zhimin; Duan Chuanren; Wang Qinghong; Liu Liu

2005-01-01

347

Neutrino Nuclear Responses for Neutrino Studies in Nuclear Femto Laboratories  

SciTech Connect

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.

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

348

Nuclear architecture remodelling in envelopathies.  

PubMed

We performed ultrastructural studies on nuclear abnormalities in muscle from 8 patients with X-linked and autosomal dominant form of Emery-Dreifuss muscular dystrophy (EDMD) and one case with progeroid syndrome. The diagnosis was based on clinical and molecular findings. We detected various degrees of nuclear architecture remodelling ranging from misshapen shape, nuclear disintegration, nuclear chromatin condensation and decondensation, focal chromatin loss to complete nuclear fragmentation. The most interesting finding was the appearance of tubulofilamentous inclusions inside the nuclear matrix of X-linked EDMD patients. All these nuclear aberrations are considered to be structural indicators of nuclear dysfunction evoked by envelope protein deficiency. PMID:17594594

Fidzia?ska, Anna; Glinka, Zofia

2007-01-01

349

Percepción de las redes sociales en la escuela: colegio Felipe Palazon (Tarija – Bolivia)  

Microsoft Academic Search

No hay duda que desde hace mucho las tecnologías de la información y comunicación, asi como internet, tienen un crecimiento exponencial sin límites en todo el mundo, por las múltiples aplicaciones, y aporte en todos los ámbitos profesionales, lo mismo ocurre con el fenómeno de las redes sociales. En Bolivia y, específicamente en la ciudad de Tarija, siguen esta tendencia;

Carmelo Branimir España Villegas

2011-01-01

350

78 FR 20354 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico  

Federal Register 2010, 2011, 2012, 2013

...DF0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management's (BLM) Las Cruces District Resource Advisory Council (RAC...meet on April 23, 2013, at the BLM Las Cruces District Office Main Conference Room...

2013-04-04

351

77 FR 18858 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico  

Federal Register 2010, 2011, 2012, 2013

...DF0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management (BLM), Las Cruces District Resource Advisory Council (RAC...date is April 11 2012, at the BLM Las Cruces District Office, 1800 Marquess...

2012-03-28

352

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

Federal Register 2010, 2011, 2012, 2013

...DF0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management's (BLM) Las Cruces District Resource Advisory Council (RAC...Museum, 4100 Dripping Springs Road, Las Cruces, NM, 88005 from 9 a.m.-4...

2012-12-31

353

78 FR 44590 - Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting, New Mexico  

Federal Register 2010, 2011, 2012, 2013

...DF0000] Notice of Public Meeting, Las Cruces District Resource Advisory Council Meeting...Bureau of Land Management's (BLM) Las Cruces District Resource Advisory Council (RAC...meet on August 22, 2013, at the BLM Las Cruces District Office Main Conference Room...

2013-07-24

354

LOS HÁBITOS DE ACTIVIDAD FÍSICA DE LAS PERSONAS MAYORES EN ESPAÑA Y CONDICIÓN SOCIAL  

Microsoft Academic Search

La investigación persigue comprobar las posibles desigualdades y diferencias según la posición social percibida en la práctica de actividad física semanal regular (una o dos veces por semana) de las personas mayores en España. La metodología cuantitativa empleada ha consistido en la aplicación de un cuestionario estructurado a una mues- tra aleatoria de las personas mayores de 65 años en

González Rivera; Martín Rodríguez; Jiménez-Beatty Navarro; Campos Izquierdo

355

Anaerobic biodegradation of linear alkylbenzene sulfonate (LAS) in upflow anaerobic sludge blanket (UASB) reactors  

Microsoft Academic Search

The anaerobic biodegradation of Linear Alkylbenzene Sulfonate (LAS) was studied in Upflow Anaerobic Sludge Blanket Reactors (UASB). One reactor was fed with easily degradable substrates and commercial LAS solution during a period of 3 months (Reactor 1), meanwhile a second reactor was fed with a commercial LAS solution without co-substrate (Reactor 2) during 4 months. Both reactors were operated with

José L. Sanz; Elayne Culubret; Juan de Ferrer; Alfonso Moreno; José L. Berna

2003-01-01

356

78 FR 2646 - Proposed Modification of Class B Airspace; Las Vegas, NV  

Federal Register 2010, 2011, 2012, 2013

...Modification of Class B Airspace; Las Vegas, NV AGENCY: Federal Aviation Administration...document, the FAA proposed to modify the Las Vegas, NV, Class B airspace area to ensure...Modification of Class B Airspace; Las Vegas, NV'' (77 FR 65332). The FAA...

2013-01-14

357

75 FR 38778 - Expansion of Foreign-Trade Zone 89 Las Vegas, NV  

Federal Register 2010, 2011, 2012, 2013

...1688] Expansion of Foreign-Trade Zone 89 Las Vegas, NV Pursuant to its authority under the Foreign-Trade...FTZ 89 to include a site in the City of North Las Vegas, Nevada, within the Las Vegas Customs and Border Protection port of entry...

2010-07-06

358

Las Relaciones Universidad- Empresa y su incidencia en la Producción Científica  

Microsoft Academic Search

El establecimiento de forma generalizada de las relaciones entre la Universidad y la empresa ha abierto un campo de estudio de gran interés, centrado en los efectos que tales relaciones pudiesen tener sobre las misiones universitarias tradicionales, especialmente sobre la investigación. En este artículo se analiza si las relaciones universidad empresa (RUE) inhiben la productividad científica de los profesores universitarios.

Liney Manjarrés-Henríquez; Antonio Gutiérrez-Gracia; Jaider Vega-Jurado; Andrés Carrión-García

2012-01-01

359

UNA METODOLOGÍA ADMINISTRATIVA PARA LAS PEQUEÑAS Y MEDIANAS EMPRESAS DE LA REGIÓN DE CELAYA  

Microsoft Academic Search

En los últimos años en nuestro país, ha venido cobrando especial relevancia el sector de los micros, pequeñas y medianas empresas (MIPyMES); las estrategias principales del gobierno, están enfocadas precisamente en el apoyo a este sector, que sustenta las cifras actuales de empleo. Sin embargo las condiciones económicas y financieras del entorno han generado un alto grado de incertidumbre, los

Nicolás Barajas-Andrade; Eugenio Guzmán-Soria; Juvencio Hernández-Martínez; Samuel Rebollar-Rebollar

2009-01-01

360

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

Microsoft Academic Search

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

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

2008-01-01

361

Influence of water hardness on the bioavailability and toxicity of linear alkylbenzene sulphonate (LAS)  

Microsoft Academic Search

In the present work, the influence of Ca2+ concentration on the toxicity of single cut linear alkylbenzene sulfonate (LAS) homologues was studied. Precipitation boundary diagrams for each homologue were obtained, indicating turbid and clear zones depending on the LAS and Ca2+ concentrations. The separation between transparent and turbid zones is given by the so-called precipitation line. LAS toxicity to Daphnia

Coral Verge; Alfonso Moreno; José Bravo; José L. Berna

2001-01-01

362

Sorting the nuclear proteome  

PubMed Central

Motivation: Quantitative experimental analyses of the nuclear interior reveal a morphologically structured yet dynamic mix of membraneless compartments. Major nuclear events depend on the functional integrity and timely assembly of these intra-nuclear compartments. Yet, unknown drivers of protein mobility ensure that they are in the right place at the time when they are needed. Results: This study investigates determinants of associations between eight intra-nuclear compartments and their proteins in heterogeneous genome-wide data. We develop a model based on a range of candidate determinants, capable of mapping the intra-nuclear organization of proteins. The model integrates protein interactions, protein domains, post-translational modification sites and protein sequence data. The predictions of our model are accurate with a mean AUC (over all compartments) of 0.71. We present a complete map of the association of 3567 mouse nuclear proteins with intra-nuclear compartments. Each decision is explained in terms of essential interactions and domains, and qualified with a false discovery assessment. Using this resource, we uncover the collective role of transcription factors in each of the compartments. We create diagrams illustrating the outcomes of a Gene Ontology enrichment analysis. Associated with an extensive range of transcription factors, the analysis suggests that PML bodies coordinate regulatory immune responses. Contact: m.boden@uq.edu.au Supplementary information: Supplementary data are available at Bioinformatics online.

Bauer, Denis C.; Willadsen, Kai; Buske, Fabian A.; Le Cao, Kim-Anh; Bailey, Timothy L.; Dellaire, Graham; Boden, Mikael

2011-01-01

363

Nuclear power safety  

SciTech Connect

This paper reports that since the Chernobyl nuclear plant accident in 1986, over 70 of the International Atomic Energy Agency's 112 member states have adopted two conventions to enhance international cooperation by providing timely notification of an accident and emergency assistance. The Agency and other international organizations also developed programs to improve nuclear power plant safety and minimize dangers from radioactive contamination. Despite meaningful improvements, some of the measures have limitations, and serious nuclear safety problems remain in the design and operation of the older, Soviet-designed nuclear power plants. The Agency's ability to select reactors under its operational safety review program is limited. Also, information on the extent and seriousness of safety-related incidents at reactors in foreign countries is not publicly available. No agreements exist among nuclear power countries to make compliance with an nuclear safety standards or principles mandatory. Currently, adherence to international safety standards or principles is voluntary and nonbinding. Some states support the concept of mandatory compliance, but others, including the United States, believe that mandatory compliance infringes on national sovereignty and that the responsibility for nuclear reactor safety remains with each nation.

Not Available

1991-11-01

364

Nuclear Material Management Abstract  

SciTech Connect

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

Jesse C. Schreiber

2007-07-10

365

Nuclear (multi-)fragmentation  

NASA Astrophysics Data System (ADS)

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

Raduta, Adriana R.

2013-04-01

366

Nuclear reactor safety  

SciTech Connect

It has been remarked that all technology is a Faustian bargain. Man obtains conveniences and sometimes luxuries, but in exchange he sets an increased potential for catastrophe. The more successful a techology is, the more man depends on it, and the higher the stakes become. Nowhere does this cautious view of technology apply better than to nuclear energy. There is rapidly increasing national commitment to nuclear power. In a few years the existing investments in nuclear power installations will be so massive that major changes in design or siting policies will have become virtually impossible. This article stresses the problems that exist with the current nuclear power policy, the problems that exist with the AEC. The author states that now is the time to deal with the major public health and safety problems related to nuclear power. He states that responsibility for this nation's nuclear power policy should not be left entirely up to the federal executive branch or even Congress, but state governments, scientists, and even private citizens should educate themselves in this area and take an active part in the formulation of the national nuclear power policy.

Primack, J.; Von Hippel, F.

1984-10-01

367

The new nuclear nations  

SciTech Connect

Using 251 pages of text, 66 pages of references and 26 pages of appendixes, Spector delves into a world of new nuclear suppliers whose voracious hunger for profits may lead them to provide unwise assistance to countries that are unduly interested in nuclear weaponry. He assails a new dragon, a 'nuclear netherworld' that would illicitly supply such items for profit or political gain. Spector's book tells of covert dealings in nuclear technologies and materials. For him, the buyers have but one goal: '... to gain possession of the knowledge and materials necessary for development of nuclear weapons'. He warns of dangers from this illicit trade, of the loopholes in existing controls and the need to close them. His warnings come wrapped in stories of undercover transactions, many about Pakistan's efforts to get what it needs for its centrifuge enrichment plant. Recognizing the tightening of controls over nuclear trade since the 1970s, including those for dual-use items, Spector is nonetheless pessimistic that these efforts are sufficient to irradicate the nuclear netherworld or to deter newcomers from it.

Spector, L.

1985-01-01

368

Evaluated Nuclear Data  

SciTech Connect

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.

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

2010-10-01

369

Laser nuclear studies  

NASA Astrophysics Data System (ADS)

The ability of optical pumping to produce nuclear orientation and the advent of single frequency tunable dye lasers has brought about a new interesting area of study, Laser Induced Nuclear Orientation (LINO). The impact of LINO on the nuclear structure studies of short lived nuclei along with a discussion on various relaxation mechanisms involved are presented. As an example, recent experimental results on85mRb (T1/2=1.0 ?s) are given in detail. Possible application of LINO to151Eu discussed.

Dasari, Ramachandra R.; Shimkaveg, Gregory M.; Otteson, Michael S.; Feld, Michael S.

1987-12-01

370

Yeast nuclear RNA processing  

PubMed Central

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.

Bernstein, Jade; Toth, Eric A

2012-01-01

371

International Nuclear Safety Center  

NSDL National Science Digital Library

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

372

Nuclear power after Chernobyl  

SciTech Connect

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.

Ahearne, J.F.

1987-05-08

373

Fictions of nuclear disaster  

SciTech Connect

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

Dowling, D.

1987-01-01

374

Monitoring international nuclear activity  

SciTech Connect

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.

Firestone, R.B.

2006-05-19

375

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

ERIC Educational Resources Information Center

|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…

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

376

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

ERIC Educational Resources Information Center

|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…

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

377

Nuclear Technology Series. Course 23: Nuclear Chemical Processes.  

ERIC Educational Resources Information Center

|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…

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

378

Nuclear electric power and the proliferation of nuclear weapon states  

Microsoft Academic Search

Control and elimination of the strategic nuclear weapons held by the nuclear weapon states remains the central problem in the arms control and disarmament field. Whether the proliferation of nations with nuclear weapons can be stopped is dubious. A sovereign nation will launch a nuclear weapons program if it has the motivation and resource. Motivation depends on military and political

Walske

2009-01-01

379

Nuclear energy technology: theory and practice of commercial nuclear power  

Microsoft Academic Search

Nuclear Energy Technology provides a methodical, well-tested basis for self-paced study by the practicing professional. The fundamental principles are stressed to maximize one's ability to analyze the growing impact of nuclear energy in the future. Special features include: thorough overview introducing the reader to nuclear fuel cycles and nuclear power; theoretical coverage stressing the essentials of design and operational applications;

Knief

1981-01-01

380

Use of cermet fueled nuclear reactors for direct nuclear propulsion  

Microsoft Academic Search

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

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

1988-01-01

381

Redefining Interrelationship between Nuclear Safety, Nuclear Security and Safeguards  

NASA Astrophysics Data System (ADS)

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

Irie, Kazutomo

382

Basic Nuclear Physics Research Needs for Nuclear Energy  

Microsoft Academic Search

Basic nuclear physics research will play a central role in the development of the future nuclear facilities. Federal requirements for higher efficiencies, lower operating and construction costs, and advanced safeguards can all be impacted by the quality of nuclear data used in the fuel cycle calculations for design and licensing. Uncertainties in the underlying nuclear data propagate to uncertainties in

Tony Hill

2008-01-01

383

The ``Nuclear Renaissance'' and the Spread of Nuclear Weapons  

Microsoft Academic Search

As interest grows around the world in nuclear power as an energy source that could help control greenhouse gas emissions, some have proclaimed the arrival of a ``nuclear renaissance.'' But can the increased risks of more nuclear power be managed? The political crisis surrounding Iran's pursuit of uranium enrichment has exposed weaknesses in the nuclear nonproliferation regime. Also, al Qaeda's

Edwin S. Lyman

2007-01-01

384

Nuclear Engineering Education in 21 st Century  

Microsoft Academic Search

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

Farhang Sefidvash

385

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

SciTech Connect

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.

BECHTEL NEVADA

2004-07-01

386

Mecanismos de Acción de las Auxinas y los Herbicidas Auxínicos  

NSDL National Science Digital Library

Se muestra como las auxinas y los herbicidas auxínicos pueden inducir respuestas celulares y se describe el transporte basípeto de las auxinas. También se muestra como los receptores de auxinas reconocen las auxinas y los herbicidas auxínicos, los cuales inducen entonces la transmisión y traducción de señales para activar varios genes; el papel de los productos de esos genes en las respuestas de las plantas es también mostrado.

387

Nuclear lipid droplets: a novel nuclear domain.  

PubMed

We investigated nuclear neutral-lipid (NL) composition and organization, as NL may represent an alternative source for providing fatty acids and cholesterol (C) to membranes, signaling paths, and transcription factors in the nucleus. We show here that nuclear NL were organized into nonpolar domains in the form of nuclear-lipid droplets (nLD). By fluorescent confocal microscopy, representative nLD were observed in situ within the nuclei of rat hepatocytes in vivo and HepG2 cells, maintained under standard conditions in culture, and within nuclei isolated from rat liver. nLD were resistant to Triton X-100 and became stained with Sudan Red, OsO4, and BODIPY493/503. nLD and control cytosolic-lipid droplets (cLD) were isolated from rat-liver nuclei and from homogenates, respectively, by sucrose-gradient sedimentation. Lipids were extracted, separated by thin-layer chromatography, and quantified. nLD were composed of 37% lipids and 63% proteins. The nLD lipid composition was as follows: 19% triacylglycerols (TAG), 39% cholesteryl esters, 27% C, and 15% polar lipids; whereas the cLD composition contained different proportions of these same lipid classes, in particular 91% TAG. The TAG fatty acids from both lipid droplets were enriched in oleic, linoleic, and palmitic acids. The TAG from the nLD corresponded to a small pool, whereas the TAG from the cLD constituted the main cellular pool (at about 100% yield from the total homogenate). In conclusion, nLD are a domain within the nucleus where NL are stored and organized and may be involved in nuclear lipid homeostasis. PMID:23098923

Layerenza, J P; González, P; García de Bravo, M M; Polo, M P; Sisti, M S; Ves-Losada, A

2012-10-23

388

Nuclear Materials Inventory Plan.  

National Technical Information Service (NTIS)

In any processing, manufacturing, or active storage facility it is impractical to assume that any physical security system can prevent the diversion of Special Nuclear Material (SNM). It is, therefore, the responsibility of any DOE Contractor, Licensee, o...

R. W. Doerr D. H. Nichols

1982-01-01

389

[Nuclear News -- Operations  

SciTech Connect

This section covers the interview with Peter Polfleit, corporate nuclear emergency planner for Rochester Gas and Electric Corporation, on the issues and events that affect emergency planning at Ginna.

Michal, R.A.

1999-11-01

390

TALYS: Nuclear Reaction Simulator  

NASA Astrophysics Data System (ADS)

TALYS is a nuclear reaction code that estimates the Maxwellian-averaged reaction rates that are of astrophysical relevance. This enables reaction rates to be calculated with increased accuracy and reliability and the approximations of previous codes to be investigated. The TALYS predictions for the thermonuclear rates of relevance to astrophysics are detailed and compared with those derived by widely-used codes for the same nuclear ingredients. TALYS predictions may differ significantly from those of previous codes, in particular for nuclei for which no or little nuclear data is available. The pre-equilibrium process is shown to influence the astrophysics rates of exotic neutron-rich nuclei significantly. The TALYS code provides a tool to estimate all nuclear reaction rates of relevance to astrophysics with improved accuracy and reliability.

Koning, Arjan; Hilaire, Stephane; Duijvestijn, Marieke

2012-02-01

391

Fuel of nuclear reactors.  

National Technical Information Service (NTIS)

This booklet is a presentation of the different steps of the preparation of nuclear fuels performed by Cogema. The documents starts with a presentation of the different French reactor types: graphite moderated reactors, PWRs using MOX fuel, fast breeder r...

1995-01-01

392

Nuclear Construction Engineering Technology.  

National Technical Information Service (NTIS)

This report provides the technology which enables the engineer to make engineering, safety and cost analysis of the applicability and feasibility of using nuclear explosives in conjunction with the construction of specific civil works projects. A discussi...

B. C. Hughes

1968-01-01

393

Thermoelectric Nuclear Fuel Element.  

National Technical Information Service (NTIS)

The nuclear fuel element is composed of a plurality of axially aligned hollow uranium dioxide cylinders, a coil of tungsten wire embedded in vibrationally compacted uranium dioxide powder inside the uranium dioxide cylinders, a metal jacket enclosing the ...

J. O. McPartland L. A. Pember J. A. Christensen

1965-01-01

394

Bayreuth nuclear demagnetization refrigerator  

SciTech Connect

The design, construction, and performance of a Cu nuclear refrigerator are reported. The first nuclear stage (total 275 moles Cu with 104 moles Cu in 8 T) has refrigerated a /sup 195/Pt NMR thermometer in the low-field experimental region to 15 ..mu..K; it can keep experiments below 20 ..mu..K for more than 1 week. It can alternatively precool a second nuclear stage (2 moles Cu in 9 T). Demagnetizing this stage has resulted in a temperature of at most 12 ..mu..K as measured by another /sup 195/Pt NMR thermometer attached to the stage. The details of the thermometry are described and possible origins of the observed internal heat leaks as well as unexpected contributions to the specific heat of the nuclear stages are discussed.

Gloos, K.; Smeibidl, P.; Kennedy, C.; Singsaas, A.; Sekowski, P.; Mueller, R.M.; Pobell, F.

1988-10-01

395

Nuclear waste management worldwide  

Microsoft Academic Search

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

Charles McCombie

1997-01-01

396

Nuclear medicine annual, 1985  

Microsoft Academic Search

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

L. M. Freeman; H. S. Weissmann

1985-01-01

397

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

398

?-nuclear bound states revisited  

NASA Astrophysics Data System (ADS)

The strong energy dependence of the s-wave ?N scattering amplitude at and below threshold, as evident in coupled-channels K-matrix fits and chiral models that incorporate the S11N*(1535) resonance, is included self-consistently in ?-nuclear bound-state calculations. This approach, applied recently in calculations of kaonic atoms and K¯-nuclear bound states, is found to impose stronger constraints than ever on the onset of ?-nuclear binding, with a minimum value of Rea?0.9 fm required to accommodate an ?–He4 bound state. Binding energies and widths of ?-nuclear states are calculated within several underlying ?N models for nuclei across the periodic table, including Mg?25 for which some evidence was proposed in a recent COSY experiment.

Friedman, E.; Gal, A.; Mareš, J.

2013-10-01

399

Nuclear energy in space  

NASA Astrophysics Data System (ADS)

The space nuclear power studies that started in 1960s have resulted in flight demonstration tests of nuclear power systems on space vehicles of the 'Cosmos' series. The advantages of thermionic space systems (including minimum size and the possibility of increasing the power level) ensure their competitiveness at power levels up to several hundred kilowatts and with lifetime of 2 to 3 years with subsequent extensions to 5 or more years. The USSR is also developing nuclear systems to supply energy for space installations of various types, including power, propulsion, and combined systems. Further space nuclear power development requires complex scientific research which will be the most effective within the framework of international cooperation.

Ponomarev-Stepnoi, Nikolai N.

400

British Nuclear Policymaking.  

National Technical Information Service (NTIS)

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 curre...

C. J. Bowie A. Platt

1984-01-01

401

Dynamics of nuclear proliferation  

SciTech Connect

This book looks beyond policy disputes to make a systematic examination of the assumptions and contending hypotheses that constitute contemporary thinking on nuclear proliferation. Rather than determine who is right or wrong, the intent is to develop a better picture by using the various schools of thought as analytic windows. A better understanding of how the process operates should offer better guidance for predicting future nuclear proliferation and, ultimately, for controlling it. Separate chapters deal with the contending views, the technological and motivational bases of nuclear proliferation, the presence of a technological imperative, testing the motivational hypothesis, the dynamics of the process, and forecasting. Four appendices present historical decisions, the technical model, cost-estimating procedures, and procedures for estimating nuclear propensities. 288 references, 17 figures, 26 tables.

Meyer, S.M.

1984-01-01

402

Nuclear Engine Clustering Considerations.  

National Technical Information Service (NTIS)

Some considerations involved in the clustering of solid-core nuclear engines are examined parametrically in order to determine their importance and to indicate the effect of system tradeoffs on vehicle performance. These include neutronic coupling effects...

R. W. Langley J. S. Woyski

1965-01-01

403

Direct nuclear pumped laser  

DOEpatents

There is provided a direct nuclear pumped gas laser in which the lasing mechanism is collisional radiated recombination of ions. The gas laser active medium is a mixture of the gases, with one example being neon and nitrogen.

Miley, George H. (Champagne, IL); Wells, William E. (Urbana, IL); DeYoung, Russell J. (Hampton, VA)

1978-01-01

404

Poster: "Nuclear Promise."  

ERIC Educational Resources Information Center

|Third in a series of three posters designed for an energy-enriched curriculum, this poster deals with nuclear energy. Learning activities for secondary students are provided on the reverse side. (RM)|

Social Education, 1982

1982-01-01

405

Desalting and Nuclear Energy  

ERIC Educational Resources Information Center

|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)|

Burwell, Calvin C.

1971-01-01

406

Nuclear rearrangement energy  

Microsoft Academic Search

The concept of rearrangement energy in nuclear particle removal is carefully defined by specifying several energies associated with the process and its analysis. Connection is made between the present definition and closely related concepts apt to be confused with \\

William A. Friedman

1975-01-01

407

Concise nuclear isobar charts  

SciTech Connect

In the Concise Nuclear Isobar Charts, data on binding energies of protons and neutrons in the ground state and excitation energies for low-lying nuclear energy levels are displayed, both of which are of great interest for transition processes as well as for questions of nuclear structure. Also, quantum numbers for angular momentum and parity are shown for these energy levels. For the stable nuclei, data for the relative abundances, and for unstable nucleon configurations, the transition probabilities are included in the data displayed. Due to the representation chosen for the atomic nuclei, in many cases a very clear first survey of systematic properties of nuclear energy states as well as spontaneous decay processes is achieved.

Bucka, H.

1986-01-01

408

Nuclear air cleaning  

SciTech Connect

This report briefly describes the history of the use of high- efficiency particulate air filters for air cleaning at nuclear installations in the United States and discusses future uses of such filters.

Bellamy, R.R.

1994-12-31

409

International Nuclear Security  

SciTech Connect

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.

Doyle, James E. [Los Alamos National Laboratory

2012-08-14

410

Next Generation Nuclear Plant.  

National Technical Information Service (NTIS)

The Next Generation Nuclear Plant will be a demonstration of the technical, licensing, operational, and commercial viability of high temperature gas-cooled reactor (HTGR) technology for the production of process heat, electricity, and hydrogen. This nucle...

2009-01-01

411

Nuclear Magnetic Resonance Spectroscopy  

NSDL National Science Digital Library

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

2011-05-18

412

Nuclear data interface retrospective  

SciTech Connect

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

Gray, Mark G [Los Alamos National Laboratory

2008-01-01

413

Nuclear mechanics in disease.  

PubMed

Over the past two decades, the biomechanical properties of cells have emerged as key players in a broad range of cellular functions, including migration, proliferation, and differentiation. Although much of the attention has focused on the cytoskeletal networks and the cell's microenvironment, relatively little is known about the contribution of the cell nucleus. Here, we present an overview of the structural elements that determine the physical properties of the nucleus and discuss how changes in the expression of nuclear components or mutations in nuclear proteins can not only affect nuclear mechanics but also modulate cytoskeletal organization and diverse cellular functions. These findings illustrate that the nucleus is tightly integrated into the surrounding cellular structure. Consequently, changes in nuclear structure and composition are highly relevant to normal development and physiology and can contribute to many human diseases, such as muscular dystrophy, dilated cardiomyopathy, (premature) aging, and cancer. PMID:21756143

Zwerger, Monika; Ho, Chin Yee; Lammerding, Jan

2011-08-15

414

Western Nuclear Science Alliance  

SciTech Connect

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

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

2010-12-07

415

Nuclear material operations manual  

SciTech Connect

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.

Tyler, R.P.

1981-02-01

416

JPRS report, nuclear developments  

SciTech Connect

This report contains articles concerning the nuclear developments of the following countries: (1) China; (2) Japan, North Korea, South Korea; (3) Bulgaria; (4) Argentina, Brazil, Honduras; (5) India, Iran, Pakistan, Syria; (6) Soviet Union; and (7) France, Germany, Turkey.

NONE

1991-03-28

417

Nuclear Fuel Reprocessing  

SciTech Connect

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.

Michael F. Simpson; Jack D. Law

2010-02-01

418

Atomic Alchemy: Nuclear Processes  

NSDL National Science Digital Library

ThinkQuest is an online program that challenges students, educators at all levels to develop educational Web sites for curriculum and staff development. This specific site concentrates on Nuclear reactions and power.

2003-10-31

419

Nuclear explosive driven experiments  

SciTech Connect

Ultrahigh pressures are generated in the vicinity of a nuclear explosion. We have developed diagnostic techniques to obtain precise high pressures equation-of-state data in this exotic but hostile environment.

Ragan, C.E.

1981-01-01

420

Physics and nuclear power  

NASA Astrophysics Data System (ADS)

Nuclear power owes its origin to physicists. Fission was demonstrated by physicists and chemists and the first nuclear reactor project was led by physicists. However as nuclear power was harnessed to produce electricity the role of the engineer became stronger. Modern nuclear power reactors bring together the skills of physicists, chemists, chemical engineers, electrical engineers, mechanical engineers and civil engineers. The paper illustrates this by considering the Sizewell B project and the role played by physicists in this. This covers not only the roles in design and analysis but in problem solving during the commissioning of first of a kind plant. Looking forward to the challenges to provide sustainable and environmentally acceptable energy sources for the future illustrates the need for a continuing synergy between physics and engineering. This will be discussed in the context of the challenges posed by Generation IV reactors.

Buttery, N. E.

2008-03-01

421

Experimental Nuclear Astrophysics  

NASA Astrophysics Data System (ADS)

This contribution will provide an overview of the experimental nuclear astrophysics projects pursued with stable and radioactive beams at the CSM accelerator laboratory, the Holifield Radioactive Ion Beam Facility (HRIBF) at ORNL and at the TRIUMF facility in Vancouver.

Greife, Uwe

2000-09-01

422

Intraoperative nuclear imaging probe  

Microsoft Academic Search

Novel radiopharmaceuticals have recently generated a resurgence of interest in the use of hand-held, intraoperative nuclear probes to provide in vivo localization of tumors. A hand-held intraoperative nuclear imaging probe is being developed based on a position-sensitive photomultiplier tube. A compact bench-top prototype system has been built which is capable of providing real-time images with 2.5-mm resolution (for 99mTc) over

R. H. Redus; J. Gordon; W. J. McGann; G. Entine; A. B. Brill; H. Liu; A. Karellas

1991-01-01

423

The nuclear matter problem  

SciTech Connect

We review the present statiis of the many-body theory of nuclear and pure neutron matter based on realistic models of nuclear forces, The current models of two- and three-nucleon interactions are discussed along with recent results obtained with the Brueckner and variatioual methods. New initiatives in the variational method and quantuni Monte Carlo nicthods to study pure neutron matter are described, and finally, the analytic behavior of the energy of piire neutron matter at low densities is cliscussed.

Carlson, J. A. (Joseph A.); Cowell, S.; Morales, J.; Ravenhall, D. G.; Pandharipande, V. R. (Vijay R.)

2002-01-01

424

Case study: nuclear power  

Microsoft Academic Search

The generation of electricity from nuclear power currently contributes 17% of the world’s electricity. The installed capacity\\u000a grew from the first commercial plants in the early 1960s to reach 110 GW by 1979 and 318 GW by 1990, distributed between 26\\u000a countries. There are 96 further reactors being constructed which, if they are completed, would bring the total nuclear generating

L. E. J. Roberts

425

Nuclear Fuel Management Optimization  

SciTech Connect

The nuclear fuel management design optimization problem has grown more challenging and important with the passage of time. In this paper, we summarize our research on this design optimization problem. A suite of computer codes that aid in making nuclear fuel management decisions has been developed. These codes utilize stochastic optimization techniques to search the decision space for determining the family of near-optimum decisions in the suboptimization problem being solved.

Karve, A.A.; Keller, P.M.; Turinsky, P.J.; Maldonado, G.I.

2001-06-17

426

Nuclear fuel element  

DOEpatents

A nuclear fuel element wherein a tubular cladding of zirconium or a zirconium alloy has a fission gas plenum chamber which is held against collapse by the loops of a spacer in the form of a tube which has been deformed inwardly at three equally spaced, circumferential positions to provide three loops. A heat resistant disc of, say, graphite separates nuclear fuel pellets within the cladding from the plenum chamber. The spacer is of zirconium or a zirconium alloy.

Meadowcroft, Ronald Ross (Deep River, CA); Bain, Alastair Stewart (Deep River, CA)

1977-01-01

427

Nuclear cross sections  

Microsoft Academic Search

Nuclear cross sections, sigmaij,i=pi+\\/-, K+, K-, p, p, A; j=p, A have been derived for all energies. A new expression for the average charged particle multiplicity together with new empirical formulas for elastic and inelastic pp cross sections have been derived and used to determine the nuclear cross sections. Extrapolations to high and superhigh energies are given. For instance, at

Arne Liland

1993-01-01

428

Principles of nuclear geology  

SciTech Connect

This book treats the basic principles of nuclear physics and the mineralogy, geochemistry, distribution and ore deposits of uranium and thorium. The application of nuclear methodology in radiogenic heat and thermal regime of the earth, radiometric prospecting, isotopic age dating, stable isotopes and cosmic-ray produced isotopes is covered. Geological processes, such as metamorphic chronology, petrogenesis, groundwater movement, and sedimentation rate are focussed on.

Aswathanarayana, U.

1985-01-01

429

Hot Nuclear Matter Properties  

NASA Astrophysics Data System (ADS)

The nuclear matter at finite temperature is described in the relativistic mean field theory using linear and nonlinear interactions. The behavior of effective nucleon mass with temperature was numerically calculated. For the nonlinear NL3 interaction we also observed the striking decrease at temperatures well below the nucleon mass. The calculation of NL3 nuclear matter equation of state at finite temperature is still on progress.

Passamani, Tomaz; Cescato, Maria Luiza

430

Nuclear Security Systems Center  

Microsoft Academic Search

The mission of our Center is to enhance the security, prosperity and well-being of our citizens by the application of a security systems approach incorporating the concepts of protection-in-depth, balance, and cost-effective protection. We will build upon the expertise gained through decades of providing security for the DOE nuclear weapons complex and DoD nuclear weapons storage facilities and solve security

Greer

1992-01-01

431

The nuclear weapons legacy  

SciTech Connect

On the 50th anniversary of the bombings of Hiroshima and Nagasaki, two new reports from the US DOE shed light on nuclear weapons production and its aftermath. This article summarizes and comments on the two reports: Closing the Circle on the Splitting of the Atom: the Environmental Legacy of Nuclear Weapons Production in the United States and What the Department of Energy is Doing About it; and Estimating the Cold War Mortgage: the 1995 Baseline Environmental Management Report.

Stadie, K.B.

1996-01-01

432

Diagnostic nuclear medicine  

SciTech Connect

The authors address major topics in nuclear medicine, as well as single-photon emission computed tomography (SPECT), monoclonal antibodies, positron emission tomography, cerebral perfusion studies, computer applications, and cell-labeling techniques. They correlate nuclear medicine with other imaging modalities. In general, the text is clear and concise, with high-quality, well-annotated images. This book includes sections covering hepatobiliary, adrenal, esophageal, and gastric studies and detection of pulmonary emboli.

Gottschalk, A.; Hoffer, P.B.; Potchen, J.

1988-01-01

433

Nuclear Protein Transport Pathways  

Microsoft Academic Search

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

Matthias Köhler; Hermann Haller; Enno Hartmann

1999-01-01

434

Nuclear magnetic resonance gyroscope  

SciTech Connect

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.

Grover, B.C.

1984-02-07

435

Nuclear Generalized Parton Distributions and Coherent Nuclear Processes  

NASA Astrophysics Data System (ADS)

We discuss nuclear generalized parton distributions that can be accessed in coherent hard exclusive processes with nuclei. We consider two examples of kinematics and relevant nuclear effects: medium values of Bjorken xB, xB > 0.05, and the interplay of the coherent and incoherent nuclear deeply virtual Compton scattering (DVCS), and small values of xB, xB < 0.05, where the leading twist nuclear shadowing significantly suppresses nuclear GPDs, which leads to clear experimental signals.

Guzey, V.

2011-02-01

436

18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.  

Code of Federal Regulations, 2010 CFR

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

2010-04-01

437

18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.  

Code of Federal Regulations, 2010 CFR

...2009-04-01 2009-04-01 false Nuclear energy hazards and nuclear incidents...Certifications § 1316.9 Nuclear energy hazards and nuclear incidents...such documents or actions: Nuclear Energy Hazards and Nuclear...

2009-04-01

438

18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.  

Code of Federal Regulations, 2013 CFR

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

2013-04-01

439

Nuclear Energy's Renaissance  

NASA Astrophysics Data System (ADS)

Nuclear energy is about to enter its renaissance. After almost 30 years of new plant construction dormancy, utilities are seriously preparing for ordering new plants in the next two years. This resurgence in interest is based on improved plant performance, new Nuclear Regulatory Commission licensing processes, significant incentives introduced by Congress in the Energy Policy Act of 2005 to encourage new orders, and new technologies that are competitive, simpler to operate and safer. These new evolutionary light water reactors will pave the way to more advanced high temperature gas reactors such as the pebble bed or prismatic reactors that will provide improved efficiency and safety leading to more process heat applications in oil extraction or hydrogen production. The Next Generation Nuclear Plant (NGNP) also authorized by the Energy Policy act will provide the fundamental technical basis for the future of these technologies. Progress continues on the Yucca Mountain nuclear waste disposal site enabling this expansion. When coupled with the long term strategy of waste minimization through reprocessing and actinide destruction as proposed in the Global Nuclear Energy Partnership, the future of nuclear energy as part of this nation's energy mix appears to be assured.

Kadak, Andrew C.

2006-10-01

440

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

Microsoft Academic Search

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

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

441

Nuclear Fission Industry In Japan  

Microsoft Academic Search

The Status of the nuclear fission industry in Japan is described. Japanese nuclear policy, vision, goals, and supporting organizational structures are reviewed. The facilities of the Japanese Atomic Energy Research Institute (JAERI), Power Reactor and Nuclear Fuel Development Corporation (PNC), and the Japan Atomic Power Company (JAPCO) are illustrated and described. Nuclear power statistics and power generation costs by power

Floyd A Wyczalek

1990-01-01

442

Determinants of Nuclear Weapons Proliferation  

Microsoft Academic Search

Nuclear weapons proliferation is a topic of intense interest and concern among both academics and policy makers. Diverse opinions exist about the determinants of proliferation and the policy options to alter proliferation incentives. We evaluate a variety of explanations in two stages of nuclear proliferation, the presence of nuclear weapons production programs and the actual possession of nuclear weapons. We

Dong-Joon Jo; Erik Gartzke

2007-01-01

443

The North Korean nuclear dilemma  

Microsoft Academic Search

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.

Hecker; Siegfried S

2004-01-01

444

Nuclear Fission Fuel is Inexhaustible  

Microsoft Academic Search

Nuclear fission energy is as inexhaustible as those energies usually termed ldquorenewablerdquo, such as hydro, wind, solar, and biomass. But, unlike the sum of these energies, nuclear fission energy has sufficient capacity to replace fossil fuels as they become scarce. Replacement of the current thermal variety of nuclear fission reactors with nuclear fission fast reactors, which are 100 times more

H. D. Lightfoot; W. Manheimer; D. A. Meneley; D. Pendergast; G. S. Stanford

2006-01-01

445

Nuclear medicine training in China  

Microsoft Academic Search

There are diverse approaches to the teaching of nuclear medicine in China: (1) Nuclear medicine is taught as part of the clinical curriculum in most medical schools. (2) Three medical schools undertake undergraduate training in nuclear medicine. (3) Four medical schools train nuclear medicine specialists to graduate level. (4) Eight medical schools have been authorized to provide a postgraduate programme

Shih-Chen Wang

1996-01-01

446

Nuclear Proliferation and World Politics  

Microsoft Academic Search

Varying technical deficiencies are likely to characterize the nuclear forces of many new proliferators. Regional interactions within a proliferated world probably would include increased nuclear arms racing, inadvertant or calculated nuclear-weapon use, and outside involvement in domestic nuclear coups d'état. In turn, the possible global repercussions of local proliferation are likely to include: a partial erosion of existing alliances, or,

Lewis A. Dunn

1977-01-01

447

Thinking About Preventing Nuclear War.  

ERIC Educational Resources Information Center

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…

Ground Zero, Washington, DC.

448

Nuclear weapons and international law  

Microsoft Academic Search

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

Pogany

1987-01-01

449

Physics (selected articles). [Nuclear fusion  

SciTech Connect

Controlled nuclear fusion as a new energy source was investigated. It will be possible in the 1980's to obtain thermal nuclear ignition, and in the early 2000's nuclear fusion may be used to supplement the energy shortage. It is predicted that in the 2000's nuclear fusion will occupy an important position as a global source of energy.

Shiyao, Z.; Zesheng, C.; Xiaolung, X.; Qiang, H.

1982-09-01

450

Nuclear fuels in space rockets  

Microsoft Academic Search

There are three different types of rocket engines; solid propelled rockets, liquid propelled rockets and nuclear rockets. Nuclear rockets work by routing an appropriate gas through a nuclear rector. The reactor is at high temperature. Gas expands as it leaves the nozzle, producing a high amount of thrust. Nuclear rockets don't need an oxidizer and they require much less fuel

Ahmet Yayli; A. A. Aksit

2003-01-01

451

Report on reports: nuclear energy  

Microsoft Academic Search

A joint report by the Nuclear Energy Agency (of the OECD) and the International Energy Agency, nuclear energy prospects to 2000 surveys the factors shaping the future of nuclear power in the 24-country OECD grouping, 13 of whom were operating nuclear power plants as of the end of 1981. Among the factors reviewed are the long-term economic outlook and its

Darmstadter

1982-01-01

452

Nuclear power: the fifth horseman  

Microsoft Academic Search

''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

1976-01-01

453

Coordination compounds in nuclear medicine  

Microsoft Academic Search

Radiopharmaceuticals, drugs containing a radionuclide, are used routinely in nuclear medicine departments for the diagnosis of disease and are under investigation for use in the treatment of disease. Nuclear medicine takes advantage of both the nuclear properties of the radionuclide and the pharmacological properties of the radiopharmaceutical. Herein lies the real strength of nuclear medicine, the ability to monitor biochemical

S. Jurisson; D. Berning; Wei. Jia; Dangshe. Ma

1993-01-01

454

Nuclear reactor safety heat transfer  

Microsoft Academic Search

Nuclear Reactor Safety Heat Transfer is presented in five major sections.The first section presents the background material placing nuclear power in perspective. Starting with a historical overview, followed by fundamental concepts of nuclear energy and the philosphy of risk, the first three chapters: give the reader a brief but thorough introduction to nuclear power generation; describe the different types of

O. C. Jr

1981-01-01

455

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

Microsoft Academic Search

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

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

1991-01-01

456

Revision curricular a partir de un analisis comparativo de las discrepancias en los curriculos de una escuela de optometria en Puerto Rico con las competencias requeridas para las agencias de revalida y acreditacion 2004  

NASA Astrophysics Data System (ADS)

El proposito de esta investigacion, un estudio cualitativo de caso, fue comparar y contrastar el curriculo vigente de la Escuela de Optometria de la UIAPR con las competencias y estandares requeridos por las agencias de acreditacion y de revalida. Con este proposito, decidimos realizar una revision y un analisis de documentos: el prontuario de cada uno de los cursos de los curriculos implantados en el 1993 y en el 2001; las competencias y estandares establecidos por las agencias de revalida y de acreditacion; y las estadisticas en las que se analiza el porcentaje de estudiantes que aprueban cada una de las partes de los examenes de revalida entre el 1998 al 2003. Se realizaron entrevistas dirigidas para dar apoyo y complementar la revision y el analisis de estos documentos. Los participantes de las entrevistas fueron tres estudiantes de la clase de optometria del 2004 (ultima clase del curriculo del 1993); tres estudiantes de la clase de optometria del 2005 (primera clase graduanda del curriculo vigente) y tres profesores y/o directores de los Departamentos de Ciencias Basicas, Ciencias Clinicas y Cuidado al Paciente. Esta investigacion se enmarco en el modelo de evaluacion curricular de discrepancia de Malcolm Provus y en el modelo de desarrollo basado en competencias. Uno de los hallazgos mas importantes del estudio es que los cambios que se implantaron al curriculo del 2001 no han logrado que los estudiantes mejoren su ejecucion en los examenes de revalida. Por otro lado, se encontro que el curriculo vigente atiende completamente los estandares de la practica de Optometria, pero no las competencias. Esta informacion fue validada mediante el uso de una tabla de cotejo para el analisis de los cursos y de la informacion obtenida de las entrevistas. El estudio determina y concluye que existen discrepancias entre los prontuarios de los cursos del curriculo y las competencias requeridas por la agencia de revalida. Segundo, que el Departamento de Ciencias Basicas es el que presenta mas deficiencias en el desarrollo de las competencias. El investigador recomienda disenar e implantar un curriculo basado en competencias y proveer formacion en didactica y procesos de aprendizaje a los profesores.

Rivera Pacheco, Andres

457

NUCLEAR CHEMISTRY ANNUAL REPORT 1970  

SciTech Connect

Papers are presented for the following topics: (1) Nuclear Structure and Nuclear Properties - (a) Nuclear Spectroscopy and Radioactivity; (b) Nuclear Reactions and Scattering; (c) Nuclear Theory; and (d) Fission. (2) Chemical and Atomic Physics - (a) Atomic and Molecular Spectroscopy; and (b) Hyperfine Interactions. (3) Physical, Inorganic, and Analytical Chemistry - (a) X-Ray Crystallography; (b) Physical and Inorganic Chemistry; (c) Radiation Chemistry; and (d) Chemical Engineering. (4) Instrumentation and Systems Development.

Authors, Various

1971-05-01

458

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

NASA Astrophysics Data System (ADS)

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

McNamara, Brendan

2012-06-01

459

Nuclear medicine data communications.  

PubMed

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

Honeyman, J C

1998-04-01

460

Model Action Plan for Nuclear Forensics and Nuclear Attribution  

SciTech Connect

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.

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

2004-03-01

461

Hotel room suicide: Las Vegas and Clark County.  

PubMed

Our objective is to study the link between hotel registration and suicide. Clark County, which contains Las Vegas, drew our interest because of its extremely large number of hotel rooms. Case files of suicide from the Clark County Coroner were reviewed for years 2003-2005. The suicide rate of local residents registering in local hotels was 271/100,000. This is greater than the suicide rate in the general population of Clark County, 16.6/100,000, P<0.0001, Poisson distribution. Hotel guests from outside Clark County had a reduced rate of suicide, 4.6/100,000, P<0.0001. Residents of Clark County registering in local hotels have an increased suicide risk that is statistically significant. Possible explanations for the results are provided. PMID:17934685

Gemar, Kjersti; Zarkowski, Paul; Avery, David

2007-10-12

462

Nuclear responsibility and nuclear trade: international rules and institutions to manage nuclear fuel cycles  

Microsoft Academic Search

Unlike diffusion of earlier weapons as by-products of trade, the diffusion of nuclear weapons and nuclear wastes as by-products of nuclear-electric fuel impose apparently irrevocable inter-generational costs. However, constraints upon nuclear fuel cycle use and improvement may also have inter-generational impacts, through depletion of non-renewable fossil fuel and uranium resources. Rules-of-trade and institutions should be designed to safeguard nuclear-electric fuel

1977-01-01

463

Ending a nuclear war  

SciTech Connect

Western strategic concepts have had their own built-in images of nuclear war. These concepts concentrate largely upon the uncertainties of mass nuclear exchanges and the unbelievable devastation that would accompany such a conflict. By not considering in detail how a war of such magnitude and violence might unfold, let alone be ended, these nightmare strategists must resign themselves to either capitulation or cataclysm if their theories of deterrence should prove to be either inoperative or inappropriate in the acid test of reality. The world is at a crossroads in the development of its views of nuclear strategy. The rapid pace of technological development has profound implications for how both conventional and nuclear war might be either avoided or waged. The impact of technological development has been especially great in the area of strategic defense where, like never before, we have the opportunity to create an alternative to the exclusive reliance on the threat of retaliation. Ending a Nuclear War: Are the Superpowers Prepared provides contribution to the study of this vitally important component of deterrence.

Cimbala, S.J.; Douglass, J.D.

1988-01-01

464

Nuclear explosive safety study process  

SciTech Connect

Nuclear explosives by their design and intended use require collocation of high explosives and fissile material. The design agencies are responsible for designing safety into the nuclear explosive and processes involving the nuclear explosive. The methodology for ensuring safety consists of independent review processes that include the national laboratories, Operations Offices, Headquarters, and responsible Area Offices and operating contractors with expertise in nuclear explosive safety. A NES Study is an evaluation of the adequacy of positive measures to minimize the possibility of an inadvertent or deliberate unauthorized nuclear detonation, high explosive detonation or deflagration, fire, or fissile material dispersal from the pit. The Nuclear Explosive Safety Study Group (NESSG) evaluates nuclear explosive operations against the Nuclear Explosive Safety Standards specified in DOE O 452.2 using systematic evaluation techniques. These Safety Standards must be satisfied for nuclear explosive operations.

NONE

1997-01-01

465

Nuclear Neighborhoods and Gene Expression  

PubMed Central

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

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

2009-01-01

466

Nuclear arms cleanup  

SciTech Connect

The Soviet Union's demise five years ago brought an end to the Cold War, the 45-year arms race between the Soviet superpower and the United States. The euphoria that greeted the end of this bloodless conflict has dampened somewhat, however, as U.S. officials and their counterparts in the former Soviet republics come to grips with its legacy: thousands of highly toxic and politically destabilizing nuclear weapons. With no more perceived need for much of their vast arsenals, the governments have agreed to dismantle large numbers of nuclear warheads. But the agencies involved in this task face a daunting technical and political problem: what to do with the thousands of tons of plutonium and uranium that are the main ingredients of nuclear weapons.

Cooper, M.H.

1994-06-24

467

Nuclear fuel element  

DOEpatents

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

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

1983-01-01

468

Nuclear fuel element  

DOEpatents

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

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

1980-04-29

469

Steamlined nuclear regulation  

SciTech Connect

Whatever form is taken by the power reactor of the future, it will be subject to government regulation. That is a certainty. It seems equally clear that if nuclear power is to approach its maximum potential cost effectiveness while fully protecting public health and safety and the environment, the applicable nuclear regulatory process must be both effective and efficient. This paper outlines the major constraints and requirements involved in the development of an effective, streamlined nuclear regulatory process. It then suggests a general approach to the development of more efficient regulatory processes based upon the experience gained in the adaptation of classic system engineering techniques to the definition and implemention of such a process for a high-level radioactive waste geologic repository.

Romine, D.T.

1993-06-01

470

Nuclear symmetry energy  

NASA Astrophysics Data System (ADS)

To study the nuclear symmetry energy, we extend the Dirac-Brueckner approach with a Bonn one-boson-exchange nucleon-nucleon interaction to the general case of asymmetric nuclear matter. We extract the symmetry energy coefficient at the saturation to be about 31 MeV, which is in good agreement with the empirical value of 30+/-4 MeV. The symmetry energy is found to increase almost linearly with the density, which differs considerably from the results of nonrelativistic approaches. This finding also supports the linear parametrization of Prakash, Ainsworth, and Lattimer. We find, furthermore, that the higher-order dependence of the nuclear equation of state on the asymmetry parameter is unimportant.

Lee, C.-H.; Kuo, T. T. S.; Li, G. Q.; Brown, G. E.

1998-06-01

471

Labor and nuclear power  

SciTech Connect

The AFL-CIO is officially pro-nuclear, but tensions within unions are taking issue over ideological differences. The Labor movement, having looked to nuclear power development as an economic necessity to avoid unemployment, has opposed efforts to delay construction or close plants. As many as 42% of union members or relatives of members, however, were found to oppose new power plants, some actively working against specific construction projects. The United Mine Workers and Teamsters actively challenged the nuclear industry while the auto workers have been ambivalent. The differences between union orientation reflects the history of unionism in the US and explains the emergence of social unionism with its emphasis on safety and working conditions as well as economic benefits. Business union orientation trends to prevail during periods of prosperity; social unions during recessions. The labor unions and the environmentalists are examined in this conext and found to be hopeful. 35 references. (DCK)

Logan, R.; Nelkin, D.

1980-03-01

472

Swedish nuclear waste efforts  

SciTech Connect

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

Rydberg, J.

1981-09-01

473

Friction in nuclear dynamics  

SciTech Connect

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.

Swiatecki, W.J.

1985-03-01

474

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

475

Nuclear propulsion systems engineering  

SciTech Connect

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 theentire 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.

Madsen, W.W.; Neuman, J.E.: Van Haaften, D.H.

1992-12-31

476

Nuclear propulsion systems engineering  

SciTech Connect

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 theentire 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.

Madsen, W.W.; Neuman, J.E.: Van Haaften, D.H.

1992-01-01

477

Nuclear medicine imaging system  

DOEpatents

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.

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

1983-03-11

478

Nuclear-bound quarkonium  

SciTech Connect

We show that the QCD van der Waals interaction due to multiple gluon exchange provides a new kind of attractive nuclear force capable of binding heavy quarkonia to nuclei. The parameters of the potential are estimated by identifying multigluon exchange with the Pomeron contributions to elastic meson-nucleon scattering. The gluonic potential is then used to study the properties of {ital c{bar c}} nuclear-bound states. In particular, we predict bound states of the {eta}{sub {ital c}} with {sup 3}He and heavier nuclei. Production modes and rates are also discussed.

Brodsky, S.J.; Schmidt, I. (Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 (USA)); de Teramond, G.F. (Escuela de Fisica, Universidad de Costa Rica, San Jose, Costa Rica (CR))

1990-02-26

479

Nuclear Standards Master Index  

SciTech Connect

This index provides a complete list, organized by standard numbers, of all assigned NE numbers, their title, issue date, amendment number and date, issue date of the superseded standard if any, standard writer/cognizant engineer, DOE/cognizant engineer, and a remark column which reflects the current status of the standard (see legend). This January 1984 issue covers July through December 1983. The Nuclear Energy Standards KWIC Index of NE standards, also published by the Nuclear Standards Program Information Center, should be consulted for information on standards when the assigned numbers are not known.

Not Available

1984-01-20

480

Nuclear Plant Data Bank  

SciTech Connect

The Nuclear Plant Data Bank (NPDB) is being developed at the Los Alamos National Laboratory to assist analysts in the rapid and accurate creation of input decks for reactor transient analysis. The NPDB will reduce the time and cost of the creation or modification of a typical input deck. This data bank will be an invaluable tool in the timely investigation of recent and ongoing nuclear reactor safety analysis. This paper discusses the status and plans for the NPDB development and describes its anticipated structure and capabilities.

Booker, C.P.; Turner, M.R.; Spore, J.W.

1986-01-01

481

Europe's nuclear power experiment  

SciTech Connect

The OECD (Dragon) Project was a joint venture of 12 European countries set up to study the development of high temperature reactor technology and whose programme included the construction of a demonstration high temperature helium cooled reactor and its eventual operation. The Project, which spanned 17 years, was widely regarded as an extremely successful excercise in international collaboration in nuclear technology. This specially commissioned work describes the international background to the launching of the Project, providing an unbiased appraisal of the industrial, technical, administrative and political aspects of the Project's development and the problems encountered, and an evaluation of the Project's significance in the general, context of nuclear power development.

Shaw, E.N.

1983-01-01

482

Nuclear Systems Design Project  

NSDL National Science Digital Library

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.

2011-01-01

483

Nuclear waste's last stand  

SciTech Connect

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

Not Available

1992-12-01

484

Trident and nuclear law.  

PubMed

On 8 July 1996, the International Court of Justice gave its Advisory Opinion on the legality of the use or threat of nuclear weapons, in response to a resolution of the General Assembly of the United Nations. This paper considers the status of Trident, now the United Kingdom's only nuclear weapon system, in the light of the Opinion. While it cannot be concluded definitively that the threat or use of Trident is illegal, at the very least the legality of the programme is brought into considerable doubt. The continued deployment of Trident raises important legal and military issues, which must be addressed urgently. PMID:9838889

Ticehurst, R

485

Pharmacology in nuclear cardiology.  

PubMed

Although exercise remains the preferred method of cardiac stress testing, pharmacological stress plays an important role in nuclear cardiology. The globally ageing population will see an expansion of the application of pharmacological stress testing, and with this, comes the need to understand the pharmacological basis, mechanisms of action, potential interactions and adverse effects to inform usage in less-than-ideal circumstances. This study aims to enhance the decision-making process in day-to-day clinical nuclear cardiology practice through a better understanding of nuances relevant to the pharmacological agents used for cardiac stress testing. PMID:21471849

Currie, Geoffrey M; Wheat, Janelle M; Wang, Lexin; Kiat, Hosen

2011-07-01

486

Influencia de los bancos y cajas como accionistas y acreedores en la manipulación contable de las empresas  

Microsoft Academic Search

En este trabajo utilizamos una base de datos formada por 13247 empresas españolas para el periodo 1996-2000 y estudiamos el efecto de la presencia de instituciones financieras –bien sea como accionista o como acreedor- en las practicas de manipulación de beneficios (earnings management) de las empresas. Encontramos que las instituciones financieras como accionistas estimulan las prácticas de manipulación contable en

Jordi Surroca; Josep A. Tribo

2007-01-01

487

From the secrets of nuclear shapes into quantum nuclear phyics  

SciTech Connect

After a few 'historical remarks' related to the evolution of our knowledge on nuclear shape effects, recent events in super-deformation studies are commented from the point of view of their general importance for nuclear physics. 12 refs.

Dudek, J.

1988-01-01

488

Nuclear vs. Nucleon Structure Effects on Nuclear Transparency.  

National Technical Information Service (NTIS)

Nuclear structure effects account for the observed enhancement of the nuclear transparency to moderate energy protons, with respect to the predictions of Glauber theory. It is argued that in this kinematical regime a stronger color transparency signal can...

O. Benhar

1998-01-01

489

NUCLEAR POWER PLANTS AND MOBILE NUCLEAR POWER STATIONS  

Microsoft Academic Search

Both stationary and mobile nuclear power plants and research reactors ; for nuclear power development are discussed. Those in operation and under ; construction by Euratom, Federal Republic of Germany, England, France, Italy, and ; USA are described. (M.C.G.);

Wiesenack

1963-01-01

490

NUCLEAR POWER PLANTS AND MOBILE NUCLEAR POWER STATIONS  

Microsoft Academic Search

A brief review is given of general technical problems, safety and ; special incidents, stationary nuclear power plants, mobile nuclear power plants, ; and research reactors for studying economic methods for producing power. The ; bibliography contains 54 references. (N.W.R.);

Wiesenack

1962-01-01

491

La externalizacion del trabajo agrario y las empresas de servicios a la agricultura  

Microsoft Academic Search

Resumen: En este art�culo se analiza el proceso de externalizaci�n de las labores agrarias y el consiguiente desarrollo de una agricultura terciarizada. La fragmentada dimensi�n laboral y econ�mica de las explotaciones agrarias determina el proceso de externalizaci�n de las tareas agrarias en la medida en que no permite ni la incorporaci�n de innovaciones que exige el desarrollo del sistema alimentario

Alicia Langreo Navarro; Sociedad de Estudios

2002-01-01

492

Analytical methodology for linear alkylbenzene sulfonate (LAS) in waters and wastes  

Microsoft Academic Search

Analytical methodology has been developed for the measurement of linear alkylbenzene sulfonate (LAS) in a broad spectrum of\\u000a water and wastewater samples. In addition to providing the homolog-isomer composition of LAS, the gas chromatographic procedure\\u000a has been quantified by incorporation of an internal standard to provide a specific measurement of LAS. The applicability and\\u000a sensitivity of the standard, but non-specific,

Q. W. Osburn

1986-01-01

493

Inhibition of Biogas Production by Alkyl Benzene Sulfonates (LAS) in a Screening Test for Anaerobic Biodegradability  

Microsoft Academic Search

The effect of the inoculum source on the digestion of linear alkylbenzene sulfonates (LAS) under anaerobic conditions has\\u000a been investigated. The potential for primary and ultimate LAS biodegradation of anaerobic sludge samples obtained from wastewater\\u000a treatment plants (WWTPs) of different geographical locations was studied applying a batch test system. It was found that only\\u000a 4–22% of the LAS added to

M. Teresa Garcia; Encarna Campos; Manel Dalmau; Patricia Illán; Joaquin Sánchez-Leal

2006-01-01

494

“Ripple effects” and forecasting home prices in Los Angeles, Las Vegas, and Phoenix  

Microsoft Academic Search

We examine the time-series relationship between house prices in Los Angeles, Las Vegas, and Phoenix. First, temporal Granger\\u000a causality tests reveal that Los Angeles house prices cause house prices in Las Vegas (directly) and Phoenix (indirectly).\\u000a In addition, Las Vegas house prices cause house prices in Phoenix. Los Angeles house prices prove exogenous in a temporal\\u000a sense and Phoenix house

Rangan Gupta; Stephen M. Miller

2009-01-01

495

75 FR 67351 - Nuclear Energy Advisory Committee  

Federal Register 2010, 2011, 2012, 2013

...INFORMATION: Background: The Nuclear Energy Advisory Committee (NEAC), formerly the Nuclear Energy Research Advisory Committee (NERAC...implementation of DOE's civilian nuclear energy research programs. The committee...

2010-11-02

496

Nuclear fallacy: Dispelling the myth of nuclear strategy  

SciTech Connect

Citing every past crisis in which a nuclear threat was made and concluding that these crises were resolved by active negotiation and conventional military strength rather than by threat of nuclear strike, the author asserts that integrating nuclear weapons into the military arsenal significantly increases the risk of global destruction. He proposes one alternative defense strategy-removing nuclear devices from the control of the military-and analyzes the resulting consequences and effects upon U.S. security interests around the world.

Halperin, M.H.

1987-01-01

497

Economics and nuclear weapons nonproliferation in nuclear power development scenarios  

Microsoft Academic Search

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

A. N. Rumyantsev

2007-01-01

498

Safety culture in the nuclear versus non-nuclear organization  

SciTech Connect

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

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

1996-10-01

499

Environmental levels of Linear alkylbenzene Sulfonates (LAS) in sediments from the Tagus estuary (Portugal): environmental implications.  

PubMed

Sediments from the Tagus estuary (Portugal) were collected at 40 stations in July and December 2004. Total LAS concentrations ranged between 0.03 and 17.76 mg LAS.kg(-1) dry weight in July, and between 0.09 and 9.57 mg LAS.kg(-1) in December. Highest LAS concentrations were found at the upper northern part of the estuary, coincident with the localisation of an important waste water treatment station. According to the Predicted No Effect Concentration (PNEC) of 8.1 mg.kg(-1) derived for this compound, Environmental Risk Assessment (ERA) identified a hazard for the ecosystem at the station with the highest LAS concentration, and similar results are obtained by Equilibrium Partitioning Method (EPM). Nevertheless, LAS concentrations decreased significantly between samplings in the stations with the highest LAS concentrations in July, whereas increased LAS concentrations at adjacent stations were found in December. In the remaining stations, LAS concentrations were up to three orders of magnitude lower, representing no hazard for the sediment community. PMID:18228153

Hampel, M; Canário, J; Branco, V; Vale, C; Blasco, J

2008-01-29

500

Going nuclear: The spread of nuclear weapons 1986-1987  

Microsoft Academic Search

In the third annual report of the Carnegie Endowment for International Peace on the spread of nuclear weapons, Spector provides a critical survey of the status of nuclear proliferation throughout the world and examines the nuclear potential of nations in the Middle East, Asia, Africa, and Latin America. Drawing on both historical documents and up-to-date reports, the author addresses such

1987-01-01