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1

IL BLOCCO EPIDURALE: TECNICA, CONTROINDICAZIONI E COMPLICANZE  

Microsoft Academic Search

Il blocco epidurale va eseguito con tecnica sterile, perciò occorre indossare cappello, mascherina e guanti sterili e provvedere ad una accurata disinfezione della cute sovrastante il punto di iniezione. Principi Generali L'identificazione dello spazio epidurale si basa sulla sensazione di perdita di resistenza che si percepisce quando l'ago epidurale passa da un tessuto a maggiore densità (il legamento giallo) ad

Danilo Celleno; Mariagrazia Frigo

2

Rilevamento e misurazione di fessure per fatica con la tecnica Eddy-Current su giunzioni rivettate aeronautiche con automatizzazione del processo di acquisizione dei dati.  

E-print Network

??Attraverso la tecnica non distruttiva Eddy-Current sono stati ispezionati 11 pannelli Airbus e diverse giunzioni rivettate aeronautiche, sottoposti a carichi affaticanti, alla ricerca di cricche… (more)

Picchi, Fabio

2006-01-01

3

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-01-20

4

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

NASA Technical Reports Server (NTRS)

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

Long, D. M.

1982-01-01

5

High-level nuclear waste transport and storage assessment of potential impacts on tourism in the Las Vegas area. Nevada Nuclear Waste Storage Investigations Project  

SciTech Connect

The literature review and empirical analyses presented in this report were undertaken, for the most part, between August and October 1983. They are not comprehensive. No primary data were gathered, nor were any formal surveys conducted. Additionally, because construction of a repository at Yucca Mountain, if that site is selected for a repository, is not scheduled to begin until 1993, engineering design and planned physical appearance of the repository are very preliminary. Therefore, specific design features or visual appearance were not addressed in the analyses. Finally, because actual transportation routes have not been designated, impacts on tourism generated specifically by transportation activities are not considered separately. Chapter 2 briefly discusses possible means by which a repository could impact tourism in the Las Vegas area. Chapter 3 presents a review of previous research on alternative methods for predicting the response of people to potential hazards. A review of several published studies where these methods have been applied to facilities and activities associated with radioactive materials is included in Chapter 3. Chapter 4 contains five case studies of tourism impacts associated with past events that were perceived by the public to represent safety hazards. These perceptions of safety hazards were evidenced by news media coverage. These case studies were conducted specifically for this report. Conclusions of this preliminary analysis regarding the potential impact on tourism in the Las Vegas area of a repository at Yucca Mountain are in Chapter 5. Recommendations for further research are contained in Chapter 6.

NONE

1985-12-01

6

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

Iowa Public Television. Explore More Project

2004-01-01

7

Las Vegas  

NASA Technical Reports Server (NTRS)

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

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

2001-01-01

8

Contribuciones tecnicas para la medida de la contaminacion electromagnetica de microondas. Estudio en diversas poblaciones  

NASA Astrophysics Data System (ADS)

La contaminacion ambiental por campos electromagneticos ha resultado ser en estos ultimos anos uno de los problemas mas acuciantes del panorama tecnologico y de salud publica. En el primero de los casos porque las inversiones realizadas son enormes y en el segundo porque cada vez es mayor el numero de articulos, "technical reports" e informes medicos que afirman la existencia de una cierta causalidad, aunque sea debil, entre los campos electromagneticos y ciertos cuadros sintomatologicos. En nuestro caso, hemos dedicado bastantes esfuerzos a investigar el llamado "sindrome de radiofrecuencia / microondas", denominado asi en la literatura cientifica por presentarse en operarios de estaciones de radar y en trabajadores de potentes emisoras de radio y television. En esta memoria presentamos un resumen del trabajo realizado durante los ultimos anos en la medida de la contaminacion electromagnetica ambiental asociado a las comunicaciones inalambricas. En ella se recogen los fundamentos fisicos y propiedades de las ondas electromagneticas, la tecnologia empleada en los sistemas de telefonia celular y los antecedentes relativos a la investigacion de la interaccion de las ondas electromagneticas con organismos vivos. Se desarrolla un procedimiento de medida que ha conducido a la elaboracion de los primeros "mapas de radiofrecuencia" similares, en el aspecto descriptivo, a los mapas de ruido desarrollados en el area de la contaminacion acustica. Por ultimo, se analiza la respuesta subjetiva de los residentes, personas que viven en el entorno de cobertura de las estaciones base de telefonia movil y que se ven sometidos a determinados niveles de radiacion electromagnetica, con el fin de situar este fenomeno al nivel que le corresponde en el ambito de la respuesta subjetiva ciudadana.

Segura Garcia, Jaume

9

Estudiar las redes sociales: Aportes y perspectivas para las  

E-print Network

Estudiar las redes sociales: Aportes y perspectivas para las ciencias sociales Claire Bidart LEST estructuracio- nes, sus dinámicas. Transversales a los grupos y a las estructuras sociales glo- bales, las redes. Transversales a los grupos y a las estructuras sociales globales, las redes sin embargo repercuten en ellos

Paris-Sud XI, Université de

10

RETOS DE LAS HUMANIDADES Y LAS CIENCIAS SOCIALES  

E-print Network

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

Islas, León

11

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.

12

El análisis de las interacciones grupales: las aplicaciones SOCIOS  

Microsoft Academic Search

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

José Manuel Cornejo Álvarez

2006-01-01

13

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.

14

Underground nuclear weapons testing  

Microsoft Academic Search

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

Horgan

1986-01-01

15

The Las Campanas Redshift Survey  

Microsoft Academic Search

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

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

1996-01-01

16

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...

17

Nuclear Weapon  

MedlinePLUS

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

18

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

19

Nuclear sabotage  

Microsoft Academic Search

The psychology of attacks on nuclear facilities is considered. The following information is given in tabular form: attacks on nuclear installations and facilities; hoaxes and threats to nuclear installations or facilities; vandalism and sabotage at nuclear facilities; security breaches at nuclear installations and facilities; and U.S. companies fined for non-compliance with security regulations. (LK)

1976-01-01

20

Nuclear Forces  

NSDL National Science Digital Library

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

Christopher Griffith

21

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

22

Nuclear data for nuclear transmutation  

SciTech Connect

Current status on nuclear data for the study of nuclear transmutation of radioactive wastes is reviewed, mainly focusing on neutron capture reactions. It is stressed that the highest-precision frontier research in nuclear data measurements should be a key to satisfy the target accuracies on the nuclear data requested for realizing the nuclear transmutation.

Harada, Hideo [Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)

2009-05-04

23

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

24

Nuclear Facilities  

NSDL National Science Digital Library

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

Christopher Griffith

25

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

26

Las Cruces MPO 2040 Metropolitan Transportation Plan  

E-print Network

?A ANA COUNTY June 9, 2010 LAS CRUCES METROPOLITAN PLANNING ORGANIZATION Policy Committee Sharon Thomas, Chair - City of Las Cruces Scott Krahling, Vice Chair - Do?a Ana County Mayor Nora Barraza - Town of Mesilla Olga Pedroza - City of Las... Cruces Leticia Benavidez - Do?a Ana County Sam Bernal - Town of Mesilla Gill Sorg - City of Las Cruces Karen Perez - Do?a Ana County Linda Flores - Town of Mesilla Staff Tom Murphy, AICP, MPO Officer Andrew Hume, Planner Caeri Thomas...

Las Cruces Metropolitan Planning Organization

2010-06-09

27

todasuvida: Las personas con diabetes son ms  

E-print Network

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

28

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

29

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 ...

30

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

31

Nuclear ventriculography  

MedlinePLUS

... imaging; Heart scan - nuclear; Radionuclide ventriculography (RNV); Multiple gate acquisition scan (MUGA); Nuclear cardiology ... in the coronary arteries ( coronary artery disease ) Heart valve disease Other cardiac disorders that weaken the heart ...

32

Nuclear mortality  

Microsoft Academic Search

The author notes that the anti-nuclear movement is shifting its focus from bodily harm to concern for the impact on our souls from building and threatening the use of nuclear weapons. Two aspects of nuclear deterrence receiving the most public attention are the freeze effort to halt weapons modernization and the no-first-use effort to take down the nuclear umbrella. Opponents

Krauthammer

1983-01-01

33

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

34

NUCLEAR MODELS  

Microsoft Academic Search

As an introduction to the discussion of nuclear models, the Bohr atomic ; model is described. The nuclear model analogous to this atomic model is then ; discussed. Because of the very narrow nuclear levels found by Fermi, the ; compound nucleus model was then proposed. This model was limited in the region ; of very high and very low

Beck

1956-01-01

35

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

36

Nuclear weapons, nuclear effects, nuclear war  

SciTech Connect

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

Bing, G.F.

1991-08-20

37

Nuclear power and nuclear bombs  

Microsoft Academic Search

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

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

2009-01-01

38

Nuclear waste disposal in New Mexico and Nevada  

Microsoft Academic Search

The author describes the Waste Isolation Pilot Project (WIPP) for safely discarded nuclear wates is discussed. WIPP, now essentially complete, near Carlsbad, NM, and Yucca Mountain, in the early stages of construction northwest of Las Vegas, Nev. The WIPP was built to entomb the low-level radioactive wastes left over from US production of nuclear weapons. Yucca Mountain is envisioned as

J. Beard

1997-01-01

39

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

40

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

41

Nuclear safety  

NASA Technical Reports Server (NTRS)

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

Buden, D.

1991-01-01

42

Nuclear energy  

Microsoft Academic Search

Today, consensus is strengthening that mankind ought to prevent atmospheric carbon dioxide concentrations from more than doubling, since such a doubling is likely to cause a significant interference with the planet's climate system, to which it might prove difficult to adapt. Nuclear energy possesses large disadvantages, among which waste, proliferation and safety. An expansion of nuclear energy would encounter great

Bob C. C van der Zwaan

2002-01-01

43

Premio Casa de las Américas 1995  

E-print Network

. 3) El cuento Fábulas, de Nelson de Oliveira, Brasil. 4) El Premio de Novela fue declarado desierto. Premio Extraordinario de literatura hispana en los Estados Unidos La Casa de las Américas aprovecha esta ocasión para anunciar que en 1997 ha... Unidos, con textos escritos en español, inglés o ambas lenguas y en los géneros de narrativa y poesía. Los libros que concursen se someterán a las Bases generales del Premio y podrán ser enviados a: Casa de las Américas, 3ra. y G, El Vedado, La Habana...

Editors

1995-10-01

44

UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO  

E-print Network

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

Instituto de Sistemas e Robotica

45

UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO  

E-print Network

and develop a web-oriented CMS framework, WebComfort, fully developed with Microsoft technologies, namely ASP.NET Management, Web Portal Management, ASP.NET, Framework. #12;#12;Resumo Um Sistema de Gest~ao de Conte plataforma CMS baseada em tecnologia Microsoft, nomeadamente ASP.NET 2.0 (C#) e SQL Server 2005. Durante o

da Silva, Alberto Rodrigues

46

UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO  

E-print Network

,2]. The nonlinear optical process of sponta- neous parametric down conversion (SPDC) traditionally provides of the down- converted pair travels through a dispersive material in one arm of the HOM interferometer while-order dispersion cancellation has recently stimulated efforts to mimic this effect by use of classical nonlinear

Instituto de Sistemas e Robotica

47

UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO  

E-print Network

a teoria das fun¸c~oes reais recur- sivas, uma teoria an´aloga `a teoria cl´assica das fun¸c~oes recursivas. Prop~oem-se novas classes de fun¸c~oes, relacionando-se estas com as principais classes da teoria cl

Lisboa, Universidade Técnica de

48

UNIVERSIDADE TECNICA DE LISBOA INSTITUTO SUPERIOR TECNICO  

E-print Network

Giulio Sandini Doutor Jo~ao Jos´e dos Santos Sentieiro Doutor Jo~ao Manuel Lage de Miranda Lemos Doutor Labmate, C´esar Kubrick, Nuno Homogracias, Etienne Marciano, Manuel Bra¸co Forte, Plinio Arepas, Raquel, Vitor Party Animal, Sjoerd van der Blimp, Ant´onio Fitipaldi, Jord~ao Xutos, Matteo Johny Bravo, Vicente

Instituto de Sistemas e Robotica

49

(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

50

Nuclear Astrophysics  

E-print Network

Nuclear physics has a long and productive history of application to astrophysics which continues today. Advances in the accuracy and breadth of astrophysical data and theory drive the need for better experimental and theoretical understanding of the underlying nuclear physics. This paper will review some of the scenarios where nuclear physics plays an important role, including Big Bang Nucleosynthesis, neutrino production by our sun, nucleosynthesis in novae, the creation of elements heavier than iron, and neutron stars. Big-bang nucleosynthesis is concerned with the formation of elements with A nuclear physics inputs required are few-nucleon reaction cross sections. The nucleosynthesis of heavier elements involves a variety of proton-, alpha-, neutron-, and photon-induced reactions, coupled with radioactive decay. The advent of radioactive ion beam facilities has opened an important new avenue for studying these processes, as many involve radioactive species. Nuclear physics also plays an important role in neutron stars: both the nuclear equation of state and cooling processes involving neutrino emission play a very important role. Recent developments and also the interplay between nuclear physics and astrophysics will be highlighted.

Carl R. Brune

2005-02-28

51

Nuclear Celebrations  

E-print Network

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

Hacker, Randi; Tsutsui, William

2006-11-01

52

Nuclear Blast  

MedlinePLUS

... the materials - thick walls, concrete, bricks, books and earth - between you and the fallout particles, the better. ... a nuclear weapon detonated in or above the earth’s atmosphere can create an electromagnetic pulse (EMP), a ...

53

Las tecnologías de la información en las pequeñas y medianas empresas mexicanas  

Microsoft Academic Search

La presente investigación plantea una reflexión sobre el uso de las Tecnologías de la Información y Comunicación (TIC)[1] en las Pequeñas y Medianas empresas mexicanas (Pymes), en términos de los cambios en los procesos de producción y organización, en el entorno institucional público-privado y las ventajas de esto en la creación de capital social. \\u000a\\u000aDiscutimos en este trabajo, la escasa

Mónica Casalet; Leonel González

2007-01-01

54

Nuclear Nonproliferation  

SciTech Connect

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

Atkins-Duffin, C E

2008-12-10

55

Tránsitos de las Ciencias Sociales a las Ciencias de la Comunicación  

Microsoft Academic Search

En el presente trabajo se presenta una travesía que va desde el planteamiento de un mapa para reflexionar sobre las Ciencias Sociales y su papel en el mundo contemporáneo hasta llevarnos a un territorio particular que es el de las Ciencias de la Comunicación, un campo \\

J. Hugo T. Cornejo Martín del Campo

2007-01-01

56

Nuclear scales  

SciTech Connect

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

Friar, J.L.

1998-12-01

57

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

58

Nuclear analysis  

NASA Technical Reports Server (NTRS)

The MACH-1 and the THERMOS codes and their use as computational tools in nuclear analysis are examined. One dimensional survey calculations were carried out for a UF fueled core surrounded by a molten blanket; two dimensional calculations were made later with r-z geometry using the EXTERMINATOR program. Results and comparisons of the calculations are given in tabular form.

1976-01-01

59

Nuclear Misinformation  

ERIC Educational Resources Information Center

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

Ford, Daniel F.; Kendall, Henry W.

1975-01-01

60

Nuclear accident  

Microsoft Academic Search

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

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

1979-01-01

61

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

62

Nuclear Golf  

E-print Network

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

Hacker, Randi; Tsutsui, William

2006-12-06

63

Wilson Botanical Garden Las Cruces Biological Station  

E-print Network

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

Sekercioglu, Cagan Hakki

64

LAS Language Arts Supplement, English. Revised Edition.  

ERIC Educational Resources Information Center

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

DeAvila, Edward A.; Duncan, Sharon E.

65

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

66

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

PubMed Central

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

MARZÁN-RODRÍGUEZ, Melissa; VARAS-DÍAZ, Nelson

2009-01-01

67

Nuclear Medicine Imaging  

MedlinePLUS

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

68

Nuclear regulation  

SciTech Connect

GAO found that no federal agency assesses public knowledge of radiological emergency procedures. The Federal Emergency Management Agency has responsibility for ensuring the adequacy of offsite emergency plants at nuclear power plants and has periodically conducted surveys to determine whether emergency planning zones residents have received basic emergency planning information. However, FEMA has not assessed whether the public actually knows what to do in the event of an emergency. GAO believes it is appropriate that FEMA do this. This report provides information concerning the actions that utilities and FEMA take to notify EPZ residents of the procedures to be followed if a nuclear accident occurs. It recommends that FEMA develop a survey to assess EPZ residents' knowledge of radiological emergency procedures.

Not Available

1988-01-01

69

Nuclear Fusion  

NSDL National Science Digital Library

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

Astronomical Society of the Pacific

2008-01-01

70

Nuclear Physics  

Microsoft Academic Search

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

E. M. Henley; J. P. Schiffer

1935-01-01

71

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

72

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

73

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

74

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

75

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

76

Stratigraphic Units in Las Vegas Valley, Nevada  

NASA Astrophysics Data System (ADS)

Using 25 well logs, 15 of which also had accompanying geophysical and aquifer test data were used to describe and establish three alloformations including the Tule Spring and Paradise Valley Alloformations and four aquiformations, the most well defined being, the Las Vegas Springs Aquiformation, in the west central part of the bolson (Donovan, 1996), primarily in Township 20 South, Range 60 East, Mount Diablo Baseline and Meridian (MDBLM), with the stratotypes designated in T20S, R61E S31 MDBLM (36° 9'59.89"N 115°11'26.34"W). The allostratigraphic units were developed using the recommendations in the North American Code of Stratigraphic Nomenclature (NACSN, 1983 and 2005). The hydrostratigraphic units were developed following the recommendations of Seaber (1992). The units constitute the bulk of the upper 500 meter section. Twenty additional wells in the same geographic area, drilled and completed between 1995 and 2005 with detailed geologic and hydrologic information provided confirmation of these units. The proposed stratigraphic units are not part of either, and are located between, the two previously named and non-contiguous formations in the bolson (the Miocene Muddy Creek Formation and the late Pleistocene Las Vegas Formation) (Longwell et al 1965). Las Vegas Valley contains a metropolitan area of approximately two million people. The deeper part of the alluvial basin below 300 ft below ground surface is of interest for supply and storage. The shallower part is of interest for water quality and the interaction between the ground water system and engineered structures.

Donovan, D.

2013-12-01

77

Nuclear Power  

E-print Network

Cover Designer Martina Sirotic Image Copyright TebNad, ?#5;#6;#5;. Used under license from Shutterstock.com First published September ?#5;#6;#5; Printed in India A free online edition of this book is available at www.sciyo.com Additional hard copies... can be obtained from publication@sciyo.com Nuclear Power, Edited by Pavel V. Tsvetkov p. cm. ISBN ??- #7;?-?#5;?-#6;#6;#5;-? SCIYO.COM WHERE KNOWLEDGE IS FREE free online editions of Sciyo Books, Journals and Videos can be found at www.sciyo.com...

78

Nuclear Waffles  

E-print Network

The dense neutron-rich matter found in supernovae and neutron stars is expected to form complex nonuniform phases referred to as nuclear pasta. The pasta shapes depend on density, temperature and proton fraction and determine many transport properties in supernovae and neutron star crusts. We use two recently developed hybrid CPU/GPU codes to perform large scale molecular dynamics (MD) simulations with $51200$ and $409600$ nucleons of nuclear pasta. From the output of the MD simulations we characterize the topology and compute two observables, the radial distribution function $g(r)$ and the structure factor $S(q)$, for systems with proton fractions $Y_p=0.10, 0.20, 0.30$ and $0.40$ at about one third of nuclear saturation density and temperatures near $1.0$ MeV. We observe that the two lowest proton fraction systems simulated, $Y_p=0.10$ and $0.20$, equilibrate quickly and form liquid-like structures. Meanwhile, the two higher proton fraction systems, $Y_p=0.30$ and $0.40$, take a longer time to equilibrate and organize themselves in solid-like periodic structures. Furthermore, the $Y_p=0.40$ system is made up of slabs, lasagna phase, interconnected by defects while the $Y_p=0.30$ systems consist of a stack of perforated plates, the nuclear waffle phase. The periodic configurations observed in our MD simulations for proton fractions $Y_p\\ge0.30$ have important consequences for the structure factors $S(q)$ of protons and neutrons, which relate to many transport properties of supernovae and neutron star crust. A detailed study of the waffle phase and how its structure depends on temperature, size of the simulation and the screening length showed that finite-size effects appear to be under control and, also, that the plates in the waffle phase merge at temperatures slightly above $1.0$ MeV and the holes in the plates form an hexagonal lattice at temperatures slightly lower than $1.0$ MeV.

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

2014-11-03

79

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

80

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

81

Las opciones reales en la evaluación de inversiones bajo incertidumbre  

Microsoft Academic Search

Las aportaciones mas actuales en el campo de las finanzas continúan apuntando a la maximización del valor de la empresa, pero en este orden se imponen preguntas como, ¿se crea valor con la inversión?, ¿es o no una decisión correcta desde el punto de vista económico y financiero?. La teoría de opciones constituye una de las bases más importantes de

A. Lauchy Sañudo; H. Domínguez Reyes

2006-01-01

82

Las redes neuronales como herramientas estadísticas no paramétricas de clasificación  

Microsoft Academic Search

Recientemente diversos trabajos (ver p.e. Cherkassky, Friedman y Wechsler, 1994; Ripley, 1996) han analizado las relaciones entre redes neurales y técnicas estadísticas con vencionales. Aunque los resul - tados no son concluyentes, en general las redes neurales han mostrado una capacidad clasificatoria igual o superior que las técnicas estadísticas, con la ventaja de poderse utilizar independientemente del cumplimiento de los

Alfonso Pitarque; Juan Carlos Ruiz; Juan Francisco Roy

2000-01-01

83

Reconversion of nuclear weapons  

E-print Network

The nuclear predicament or nuclear option. Synopsis of three lectures : 1- The physical basis of nuclear technology. Physics of fission. Chain reaction in reactors and weapons. Fission fragments. Separration of isotopes. Radiochemistry.2- Nuclear reactors with slow and fast neutrons. Power, size, fuel and waste. Plutonium production. Dose rate, shielding and health hazard. The lessons of Chernobyl3- Nuclear weapons. Types, energy, blast and fallout. Fusion and hydrogen bombs. What to do with nuclear weapons when you cannot use them? Testing. Nonmilittary use. Can we get rid of the nuclear weapon? Nuclear proliferation. Is there a nuclear future?

Kapitza, Sergei P

1993-01-01

84

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

85

Objections to nuclear defence  

Microsoft Academic Search

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.

N. Blake; K. Pole

1984-01-01

86

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

87

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

SciTech Connect

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

Gilmore, T.D.

1992-12-31

88

La libertad en Las manos de Dios.  

E-print Network

and evil have very specific meanings: freedom and oppression."4 La figura del prisionero o del Crucificado es una representación del Hombre, atrapado en su sentido de culpa original y restringido o sacrificado por el prójimo. Como dice el Diablo en Las... carácter rebelde. Sus peticiones al carcelero se vuelven un desafío cuando pregunta, "¿Tiene miedo el Amo de que algún día esos pobres hombres que él ha vuelto mudos le griten a la cara lo mismo que mi hermano le dijo?" (p. 313). Corresponde al Diablo...

Schoenbach, Peter J.

1970-04-01

89

?Cuales son las amenazas o peligros volcanicos?  

USGS Publications Warehouse

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

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

2000-01-01

90

Nuclear "waffles"  

NASA Astrophysics Data System (ADS)

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

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

2014-11-01

91

Nuclear Stress Test  

MedlinePLUS

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

92

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

93

Basic Nuclear Science Information  

NSDL National Science Digital Library

This webpage from the Lawrence Berkeley National Laboratory contains an overview of the basic concepts in nuclear science. Nuclear structure, particle decay, nuclear reactions, and cosmic rays are briefly discussed. The page also contains helpful pictures to illustrate the concepts.

2009-10-30

94

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

95

Nuclear weapons modernizations  

SciTech Connect

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

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

2014-05-09

96

Nuclear weapons modernizations  

NASA Astrophysics Data System (ADS)

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

Kristensen, Hans M.

2014-05-01

97

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

Microsoft Academic Search

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

F. JAVIER; JUAN DE DIOS

2002-01-01

98

Fundamentos de la argumentación jurídica. Revisión de las teorías sobre la justificación de las decisiones judiciales  

Microsoft Academic Search

El libro de la distinguida catedrática de la Universidad de Ámsterdam, publicado en inglés por Kluwer Academia Publishers, tiene una interesante estructura que permitirá utilizarlo tanto para consulta de jueces, abogados y ciudadanos deseosos de aproximarse a la problemática de nuestra profesión, como por los estudiantes de las Facultades de Derecho. Luego de una introducción, la autora muestra el tema

Eveline T. Feteris

99

Nuclear and radiochemistry  

SciTech Connect

Reviewed is a book whose chapters are: ''Introduction'', ''Atomic Nuclei'', ''Radioactive Decay Processes'', ''Nuclear Reactions'', ''Equations of Radioactive Decay and Growth'', ''Interaction of Radiations with Matter'', ''Radiation Detection and Measurement'', ''Techniques in Nuclear Chemistry'', Statistical Considerations in Radioactivity Measurements'', ''Nuclear Models'', ''Radiochemical Applications'', ''Nuclear Processes as Chemical Probes'', ''Nuclear Processes in Geology and Astrophysics'', ''Nuclear Energy'', and ''Sources of Nuclear Bombarding Particles.'' Shortcomings are too much emphasis on theory and nuclear chemistry; the only nuclear activation analysis discussed involves thermal neutrons; neutron radiography is not discussed; autoradiography and isotope dilution analysis methods are only treated briefly; and there is no specific mention of cadmium ratios or resonance integrals. It is recommended as an outstanding textbook for advanced courses in this field, also as an essential, frequently consulted reference work for those engaged in nuclear chemistry, radiochemistry, and the applications of nuclear methods in many fields.

Friedlander, G.; Kennedy, T.W.; Macias, E.S.; Miller, T.M.

1982-07-01

100

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. PMID:22303264

Meier, Iris; Brkljacic, Jelena

2010-01-01

101

Las Cumbres Observatory Global Telescope Network  

NSDL National Science Digital Library

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

Observatory, Las C.

2007-07-02

102

Nuclear reactor  

DOEpatents

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

Thomson, Wallace B. (Severna Park, MD)

2004-03-16

103

Nuclear Science & Engineering  

E-print Network

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

104

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.

105

Nuclear air cushion vehicles  

NASA Technical Reports Server (NTRS)

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

Anderson, J. L.

1973-01-01

106

Nuclear disengagement in Europe  

Microsoft Academic Search

A combined withdrawal of nuclear and major conventional arms from central Europe would not only raise the nuclear threshold but also reduce the danger of surprise attack. In northern and southern Europe, nuclear weapon-free zones (NWFZs) would aim at enhancing stability and inducing confidence. In the North, limitations on nuclear weapons deployed in the vicinity of the zone, and particularly

S. Lodgaard; M. Thee

1983-01-01

107

Nuclear Smuggling Incidents  

NSDL National Science Digital Library

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

Christopher Griffith

108

The New Nuclear Nations.  

ERIC Educational Resources Information Center

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

Spector, Leonard S.

1990-01-01

109

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

110

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

111

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

112

Nuclear Magnetic Resonance  

NASA Astrophysics Data System (ADS)

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

Andrew, E. R.

2009-06-01

113

Las ayudas de la Unión Europea a las regiones españolas en el período 1989-1993 : fichas descriptivas y apoyos financieros  

Microsoft Academic Search

Se ofrece una descripción de las ayudas europeas a las regiones españolas en el periodo 1989-1993, prestando especial atención a las canalizadas a través de los fondos estructurales y de las principales iniciativas comunitarias de carácter estructural. La descripción guarda un mismo esquema para cada Comunidad Autónoma y resume los datos ofrecidos en la publicación 'Las regiones españolas en la

José Antonio Nieto Solís; Alfonso Utrilla de la Hoz

1996-01-01

114

Tecnologas de la Informacin y de las Comunicaciones (TIC)  

E-print Network

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

Escolano, Francisco

115

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

116

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

E-print Network

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

Campanario, Juan Miguel

117

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

118

Nuclear structure aspects in nuclear astrophysics  

NASA Astrophysics Data System (ADS)

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 milli-seconds 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.

Aprahamian, A.; Langanke, K.; Wiescher, M.

2005-04-01

119

University of Nevada, Las Vegas Faculty Senate Constitution  

E-print Network

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

Hemmers, Oliver

120

New Mexico State University Las Cruces, New Mexico 88003  

E-print Network

Cole Tobin New Mexico State University Las Cruces, New Mexico 88003 ctobin24@nmsu.edu 325: May 2015, New Mexico State University, Las Cruces NM GPA: 3.6; GPA in Major (Anthropology): 4.0; GPA and non- human primates. ! Research Appointments ! 2013-Present NMSU-HHMI Research Scholar, New Mexico

Wright, Timothy F.

121

Evite las enfermedades transmitidas por alimentos al comer en restaurantes  

E-print Network

Evite las enfermedades transmitidas por alimentos al comer en restaurantes Todos los días, americanos consumen alimentos y bocadillos preparados fuera del hogar por otra persona. Comer en un prácticas de higiene? Si manipulan dinero, ¿se lavan las manos antes de tocar los alimentos? Si la respuesta

122

Efecto desestacionalizador del turismo rural en las regiones españolas  

Microsoft Academic Search

La estacionalidad turística es una materia de estudio muy relevante para los responsables de las organizaciones y destinos turísticos. En el presente trabajo pretendemos analizar la estacionalidad en el turismo rural en España y, especialmente, en las Comunidades Autónomas. Trata- mos de comprobar los indicadores estacionales tanto desde el lado de la demanda como de la oferta turística, utilizando distintas

Jesús Manuel López Bonilla; Luis Miguel; López Bonilla

123

TURISMO DEL VINO: UNA APROXIMACIÓN A LAS BUENAS PRÁCTICAS  

Microsoft Academic Search

Durante las dos últimas décadas se aprecia una evolución importante de los intereses y exigencias de los consumidores de actividades turísticas. Estos intereses se han enfocado sobre todo en destinos geográficos que poseen patrimonios culturales, gastronomía tradicional, prácticas religiosas y otros atractivos turísticos que responden a las nuevas necesidades y demandas de los turistas durante su tiempo de ocio. Al

Ma. Genoveva Millán Vázquez de la Torre; Emilio Morales-Fernández; María Sol Castro-Freire

2012-01-01

124

Translational genomics of Vegetable Crops Las Vegas, NV  

E-print Network

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

Douches, David S.

125

EL CLIMA LABORAL EN LAS INSTITUCIONES DE SALUD PÚBLICA  

Microsoft Academic Search

Actualmente el clima laboral sigue siendo un área de interés para la gestión del capital humano y psicología del trabajo, debido principalmente a la naturaleza de las actividades del responsable del personal, que demandan la comprensión de las percepciones de los trabajadores, su relación con el desempeño en el trabajo, la satisfacción y el compromiso laboral; así como la creación

López Chanez Francisco Javier; Casique Guerrero Alicia

2010-01-01

126

Fingerprint Indexing Based on LAS Registration , Chao Zhang1  

E-print Network

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

Hao, Pengwei

127

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

E-print Network

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

Campanario, Juan Miguel

128

Biogenesis of nuclear bodies.  

PubMed

The nucleus is unique amongst cellular organelles in that it contains a myriad of discrete suborganelles. These nuclear bodies are morphologically and molecularly distinct entities, and they host specific nuclear processes. Although the mode of biogenesis appears to differ widely between individual nuclear bodies, several common design principles are emerging, particularly, the ability of nuclear bodies to form de novo, a role of RNA as a structural element and self-organization as a mode of formation. The controlled biogenesis of nuclear bodies is essential for faithful maintenance of nuclear architecture during the cell cycle and is an important part of cellular responses to intra- and extracellular events. PMID:21068152

Dundr, Miroslav; Misteli, Tom

2010-12-01

129

Climate Change, Nuclear Power and Nuclear  

E-print Network

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

130

Nunca ha sido fcil distinguir los hechos de la informacin falsa sobre los alimentos; las estrategias de mercadeo, las frases  

E-print Network

Nunca ha sido fácil distinguir los hechos de la información falsa sobre los alimentos; las unos mitos comunes y persistentes respecto a los alimentos: Mito: Las frutas y verduras frescas son más alimentos congelados y enlata- dos son tan nutritivos como los frescos. De hecho, ya que el licopeno es

Burke, Peter

131

Nuclear medicine and the nuclear power plant  

SciTech Connect

There were over 9,000,000 diagnostic and therapeutic administrations of radiopharmaceuticals in the United States in 1981. In Pennsylvania alone, there were approximately 650,000 diagnostic and 77,000 therapeutic administrations in 1981. With a state population of 12,000,000, this means that 1 in every 16 persons underwent some type of nuclear medicine treatment in a single year's time. These figures show that the chances of a nuclear power plant worker undergoing nuclear medicine treatment are far from remote. In fact, the chance are increasing each year as the use of nuclear diagnostic and therapeutic techniques continues to rise. Nuclear medicine patients present special problems to power plant health physicists. Some of these are discussed in this paper.

Buring, M.R. (Pennsylvania Power and Light Co., Susquehanna Steam Electric Station, Berwick, PA (US)); Brill, D.R. (Geisinger Medical Center, Danville, PA (US))

1985-04-01

132

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

133

Nuclear radiation actuated valve  

DOEpatents

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

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

1985-01-01

134

Improvised Nuclear Device  

MedlinePLUS

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

135

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

136

Nuclear disarmament verification  

SciTech Connect

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

DeVolpi, A.

1993-12-31

137

Nuclear structure. [Text book  

Microsoft Academic Search

The text is divided into eight chapters and four appendices. Nucleon-nucleon forces is the subject of the first chapter, and a background in relevant portions of elementary particle physics is included. The following chapters deal with specific aspects of nuclear structure theory: nuclear shape and moments, nuclear matter characteristics, single-particle shell model, individual-particle model, collective nuclear effects, electromagnetic interactions with

Hornyak

1975-01-01

138

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

139

Effects of nuclear war  

SciTech Connect

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, F.

1983-01-01

140

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

141

The nuclear dimension  

Microsoft Academic Search

In the light of continued nuclear proliferation and terrorist threats, the feasibility of terrorist organizations gaining access to weapons of mass destruction has to be analyzed anew and in depth. Although guerrillas and terrorist have more or less refrained from nuclear weaponry, export controls on nuclear technology (not only on behalf of the dissolution of the former Soviet Union) need

Andrew Loehmer

1993-01-01

142

NUCLEAR POWER in CALIFORNIA  

E-print Network

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

143

Nuclear energy technology  

NASA Technical Reports Server (NTRS)

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

Buden, David

1992-01-01

144

Effects of Nuclear Weapons.  

ERIC Educational Resources Information Center

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

Sartori, Leo

1983-01-01

145

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.

146

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

147

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

148

STEELS FOR NUCLEAR REACTORS  

Microsoft Academic Search

In building a nuclear reactor of any type, the stage is reached at which ; a decision must be made as to what steels can be used in construction of each ; plant component. Nuclear engineers have recognized the limitations of some of ; the common steels in nuclear environments and are pointing out ways the ; steelmaker should go

Beeghly

1960-01-01

149

El fenotipo de las mucinas en el esófago de Barrett  

PubMed Central

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

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

2011-01-01

150

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

151

The Land Analysis System (LAS) for multispectral image processing  

USGS Publications Warehouse

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

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

1988-01-01

152

Safety of the Las Vegas left-turn display.  

PubMed

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

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

2014-01-01

153

Nuclear spirals in galaxies  

E-print Network

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

Witold Maciejewski

2006-11-08

154

76 FR 15001 - Entergy Nuclear Operations, Inc,. Entergy Nuclear Vermont Yankee, LLC, Vermont Yankee Nuclear...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Entergy Nuclear Operations, Inc,. Entergy Nuclear Vermont Yankee, LLC, Vermont Yankee Nuclear Power Station; License No. DPR-28...Commission (NRC) take action with regard to the Vermont Yankee Nuclear Power Station (VY). Mr....

2011-03-18

155

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

Federal Register 2010, 2011, 2012, 2013, 2014

...Entergy Nuclear Operations, Inc.; Entergy Nuclear Vermont Yankee, LLC; Vermont Yankee Nuclear Power Station; Request for Licensing...Commission (NRC) take action with regard to the Vermont Yankee Nuclear Power Station. Mr. Mulligan...

2010-07-07

156

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

Federal Register 2010, 2011, 2012, 2013, 2014

...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

157

Sensing remote nuclear spins  

E-print Network

Sensing single nuclear spins is a central challenge in magnetic resonance based imaging techniques. Although different methods and especially diamond defect based sensing and imaging techniques in principle have shown sufficient sensitivity, signals from single nuclear spins are usually too weak to be distinguished from background noise. Here, we present the detection and identification of remote single C-13 nuclear spins embedded in nuclear spin baths surrounding a single electron spins of a nitrogen-vacancy centre in diamond. With dynamical decoupling control of the centre electron spin, the weak magnetic field ~10 nT from a single nuclear spin located ~3 nm from the centre with hyperfine coupling as weak as ~500 Hz is amplified and detected. The quantum nature of the coupling is confirmed and precise position and the vector components of the nuclear field are determined. Given the distance over which nuclear magnetic fields can be detected the technique marks a firm step towards imaging, detecting and cont...

Zhao, Nan; Schmid, Berhard; Isoya, Junichi; Markham, Mathew; Twitchen, Daniel; Jelezko, Fedor; Liu, Ren-Bao; Fedder, Helmut; Wrachtrup, Jörg

2012-01-01

158

Wintertime aerosol in Las Vegas, Nevada  

NASA Astrophysics Data System (ADS)

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

Brown, Steven G.

159

Nuclear Resonance Fluorescence for Nuclear Materials Assay.  

E-print Network

??This dissertation examines the measurement of nuclear resonance fluorescence gamma-rays as a technique to non-destructively determine isotopic compositions of target materials that are of interest… (more)

Quiter, Brian Joseph

2010-01-01

160

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

161

Agresin Sexual Derechos de las Vctimas y Servicios Disponibles  

E-print Network

Agresión Sexual Derechos de las Víctimas y Servicios Disponibles Las víctimas necesitan soporte y llamando al No. 1-800-226-6667. Víctimas de delitos sexuales tienen varios derechos, muchos de ellos están contenidos en el Capítulo 960, Estatutos de la Florida, incluyendo el derecho de: · Mantener la información

Sura, Philip

162

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

163

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

E-print Network

desarrolla una teoría interpretativa del discurso histórico que le permite señalar, a un nivel estrictamente lingüístico, las estrategias narrativas, arguméntales e ideológicas que definen y marcan el estilo especí fico de la imaginación histórica de un... metonimia, el sinécdoque y la ironía) como elementos retóricos básicos de prefiguración, así como las teorías filosóficas acerca de la concep- tualización de la realidad histórica, La línea interpretativa de Northrop Frye acerca de los "modos de fabulación...

Layera, Ramó n

1985-04-01

164

Nuclear economics: Issues and facts  

SciTech Connect

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

Hudson, C.R.

1993-12-31

165

Nuclear Science References Database  

E-print Network

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

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

2014-07-08

166

Nuclear: Greenpeace International  

NSDL National Science Digital Library

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

167

Plant nuclear photorelocation movement.  

PubMed

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

Higa, Takeshi; Suetsugu, Noriyuki; Wada, Masamitsu

2014-06-01

168

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.

169

Nuclear Science References Database  

NASA Astrophysics Data System (ADS)

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

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

2014-06-01

170

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

EPA Science Inventory

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

171

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

EPA Science Inventory

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

172

Monitoring nuclear weapons 1  

Microsoft Academic Search

\\u000a America’s first space program was to develop surveillance satellites to monitor the nuclear arsenals of the Soviet Union and\\u000a its allies. Although the Cold War has ended, nuclear weapons remain a threat to world peace and surveillance satellites are\\u000a still an important tool in monitoring them. A recent US policy statement on the subject stated that “The threat of nuclear

Pat Norris

173

Nuclear power in space  

NASA Astrophysics Data System (ADS)

Written and verbal testimony presented before the House Subcommittee on Energy Research and Development is documented. Current research efforts related to space nuclear power are discussed including the SP-100 Space Reactor Program, development of radioisotope thermoelectric generators, and the Advanced Nuclear Systems Program. Funding, research and test facilities, specific space mission requirements, and the comparison of solar and nuclear power systems are addressed. Witnesses included representatives from DOD, NASA, DOE, universities, and private industry.

174

Absolute nuclear material assay  

DOEpatents

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

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

2012-05-15

175

Assessing the nuclear age  

SciTech Connect

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.

Ackland, L.; McGuire, S.

1986-01-01

176

Nuclear power in space  

SciTech Connect

Nuclear reactors have provided energy for satellites-with nearly disastrous results. Now the US government is proposing to build nuclear-powered boosters to launch Star Wars defenses. These authors represent scientific groups that are opposed to the use of nuclear power in near space. The authors feel that the best course for space-borne reactors is to ban them from Earth orbit and use them in deep space.

Aftergood, S. (Federation of American Scientists, Washington, DC (USA)); Hafemeister, D.W. (California Polytechnic State Univ., Pomona (USA)); Prilutsky, O.F.; Rodionov, S.N. (Space Research Inst., Moscow (USSR)); Primack, J.R. (Univ. of California, Santa Cruz (USA))

1991-06-01

177

Nuclear Proliferation Challenges  

SciTech Connect

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

Professor William Potter

2005-11-28

178

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.

179

Space nuclear power systems  

NASA Technical Reports Server (NTRS)

Space nuclear power systems are considered for use in those particular spacecraft applications for which nuclear power systems offer unique advantages over solar and/or chemical space power systems. Both isotopic and reactor heated space electrical power units are described in an attempt to illustrate their operating characteristics, spacecraft integration aspects, and factory-to-end of mission operational considerations. The status of technology developments in nuclear power systems is presented. Some projections of those technologies are made to form a basis for the applications of space nuclear power systems to be expected over the next 10-15 years.

Carpenter, R. T.

1972-01-01

180

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).

181

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

E-print Network

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

Pázsit, Imre

182

Nucleation of Nuclear Bodies  

PubMed Central

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

2014-01-01

183

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

184

Sensing remote nuclear spins  

E-print Network

Sensing single nuclear spins is a central challenge in magnetic resonance based imaging techniques. Although different methods and especially diamond defect based sensing and imaging techniques in principle have shown sufficient sensitivity, signals from single nuclear spins are usually too weak to be distinguished from background noise. Here, we present the detection and identification of remote single C-13 nuclear spins embedded in nuclear spin baths surrounding a single electron spins of a nitrogen-vacancy centre in diamond. With dynamical decoupling control of the centre electron spin, the weak magnetic field ~10 nT from a single nuclear spin located ~3 nm from the centre with hyperfine coupling as weak as ~500 Hz is amplified and detected. The quantum nature of the coupling is confirmed and precise position and the vector components of the nuclear field are determined. Given the distance over which nuclear magnetic fields can be detected the technique marks a firm step towards imaging, detecting and controlling nuclear spin species external to the diamond sensor.

Nan Zhao; Jan Honert; Berhard Schmid; Junichi Isoya; Mathew Markham; Daniel Twitchen; Fedor Jelezko; Ren-Bao Liu; Helmut Fedder; Jörg Wrachtrup

2012-04-29

185

Physics of Nuclear Antishadowing  

E-print Network

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

Ivan Schmidt

2005-11-14

186

Under the Nuclear Umbrella.  

ERIC Educational Resources Information Center

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

Williams, Leon F.

1987-01-01

187

Nuclear Age Education Curriculum.  

ERIC Educational Resources Information Center

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

Oregon State Dept. of Education, Salem.

188

Underground for nuclear protection  

Microsoft Academic Search

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

2009-01-01

189

Nuclear Science References (NSR)  

NSDL National Science Digital Library

This database contains references to low and intermediate energy physics research publications listed in the Nuclear Science Reference (NSR) Data File at the National Nuclear Data Center, Brookhaven National Laboratory. Users can search via nuclide, target, incident particle, outgoing particle, reaction, author, keynumber list, subject or quantity. Links to abstracts from the American Physical Society are provided.

2004-04-16

190

Whither Nuclear Physics ?  

E-print Network

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

Syed Afsar Abbas

2008-01-07

191

Technocrats and nuclear politics  

Microsoft Academic Search

This book arrives in an age of growing unease and dissatisfaction with the reassurances, by the nuclear power industry, of the safety of its power stations. The book's central purpose is to examine the motivations and varied perceptions which have laid the foundation for Britain's contemporary civil nuclear industry. The author pays particular attention to the role and influence of

Massey

1988-01-01

192

Nuclear physics and cosmology  

SciTech Connect

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

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

2014-05-09

193

Consideration of nuclear policy  

Microsoft Academic Search

As an American psychologist who has been overseas since February 1961, it has been interesting to note some reactions to United States nuclear policies and programs. It is quite apparent that our national image has suffered under continued nuclear testing and that fear, and some hysteria, have been widespread. The negative psychology which is evident is understandable and obviously not

Robert E. Valett

1962-01-01

194

Nuclear energy related research  

NASA Astrophysics Data System (ADS)

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

Rintamaa, R.

1992-05-01

195

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

196

Nuclear Power Plant Accidents  

MedlinePLUS

... that is contaminated. People living close to the nuclear power plant who are exposed to radiation could experience long-term health effects such as ... from the power company that operates your local nuclear power plant or your local emergency services ... INSIDE STAY TUNED http://emergency.cdc.gov/radiation

197

What Is Nuclear Medicine?  

MedlinePLUS

... Normal Enzyme Level Smoker Reduced Enzyme Level 5 Nuclear medicine can detect the radiation coming from inside a patient’s body. All of ... from outside the body using machines that send radiation through the body. As a result, nuclear medicine determines the cause of a medical problem ...

198

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

199

Nuclear Arms Control Treaties  

NSDL National Science Digital Library

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

Christopher Griffith

200

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

201

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

202

Nuclear Taskforce Summation.  

ERIC Educational Resources Information Center

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

1979

203

Competing with nuclear power  

Microsoft Academic Search

Cogeneration and small power production must compete with other energy sources, particularly the nuclear power industry, if it is to survive and prosper. The author examines cogeneration's ability to compete against operating nuclear plants and those which are under construction. He emphasizes the opportunity for rate incentives provided by the Public Utility Regulatory Policies Act and the costs of liability

Spiewak

1986-01-01

204

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

205

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.

David M. Sherman

206

The nuclear dynamo; Can a nuclear tornado annihilate nations  

SciTech Connect

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

McNally, J.R. Jr.

1991-01-01

207

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.

208

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

209

THz Dynamic Nuclear Polarization NMR  

E-print Network

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

Nanni, Emilio Alessandro

210

Optical Orientation of Nuclear Spins  

E-print Network

Stray Field Images of nuclear polarization for 69 Ga as aStray Field Images of nuclear polarization for (a) 71 Gaimages for 69 Ga capture the changing shape of the distribution of nuclear polarization

King, Jonathan Patrick

2012-01-01

211

Supporting Our Nation's Nuclear Industry  

ScienceCinema

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

Lyons, Peter

2013-05-29

212

Radiological Effects of Nuclear War.  

ERIC Educational Resources Information Center

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

Shapiro, Charles S.

1988-01-01

213

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

214

US nuclear weapons policy  

SciTech Connect

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

May, M.

1990-12-05

215

La proyección teatral de la masacre de las bananeras  

E-print Network

obra consta de tres escenas divididas por la entrada de un nuevo personaje. Tulia es la nueva maestra que llega al pueblo; Amalia, su hermana paralítica, ser frágil y sensitivo que presiente la tragedia vivida en el pasado, prevee la que ellas... Encarnación viene a darles la bienvenida y responde a las preguntas de Amalia; le informa que bajo la casa están enterrados los obreros de las bananeras que no cupieron en los vagones del tren. Tulia se levanta aterrorizada. Empieza a caminar como si lo...

Velasco, Marí a Mercedes

1989-10-01

216

Departamento de Matematica, Universidad Tecnica Federico Santa Maria  

E-print Network

(1-sin2 A) = 1, 4. 2 cos u(1-cos2 u) 2 sin u cos u = sin u, 5. csc u+cot u sin u+tan u = csc u cot u, 6. cos 1+sin = sec - tan , 7. sin2 x(1 - csc2 x) = cos2 x, 8. cot B + tan B = sec B csc B, 9. 2 cos2 A(cot2 A + 1) = csc2 A + cot2 A - 1, 10. tan u+sec u cot v-csc v = cot v+csc v tan u-sec u , 11

Markina, Irina

217

comunicaciones tecnicas 1980 Serie Naranja: Investigaciones No. 242  

E-print Network

between U ~p (the n>o n sum of polynomial-time hierarchy of Stockmeyer) and PSPACE. We exhibit some others. The works of Stockmeyer and Wrathall have provided new insight into the second inclusion;2 In the first part of the paper we investigate what Drobably isa nonempty gap between the sum of Stockmeyer

Radziszowski, Stanislaw P.

218

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

219

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.

220

Implicaciones Fiscales y Sectoriales de la Reforma a las Transferencias Territoriales en Colombia  

Microsoft Academic Search

En este documento se analizan las implicaciones fiscales y sectoriales de la reforma a las transferencias territoriales que actualmente se debate en segunda vuelta en el Congreso. La reforma ajusta los montos que el gobierno nacional deberá transferir a las regiones y considera marginalmente la discusión sobre su distribución sectorial y territorial. Las competencias de gasto no se consideran en

Igancio Lozano; Jorge Ramos; Hernán Rincón

221

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

222

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

Cancer.gov

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

223

T-2 Nuclear Information Service  

NSDL National Science Digital Library

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

224

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

225

Perspectives of Nuclear Physics  

E-print Network

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

Amand Faessler

2002-12-06

226

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

Microsoft Academic Search

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

Ines Küster Boluda; Natalia Vila López; Asunción Hernández Fernández

2012-01-01

227

Nuclear models and microanalysis  

NASA Astrophysics Data System (ADS)

Most of the light elements like d, Li, B, C, N, O, F can be identified and quantified using nuclear reactions induced by protons, deuterons, 3He or 4He. Profiles or layers thickness measurements depend on knowledge of the nuclear cross sections (excitation function and angular distribution) in an energy and angular range corresponding to the depth to analyze. Several models have been developed since 30 years by nuclear physicists, to describe the nucleus. The interest was mainly the knowledge of spectroscopic data like energy levels, spin, parity, life time, etc. The knowledge of the cross section in large energy or angular domains was not the aim of the research. Using the nuclear models developed for these fundamental studies it is possible to obtain a complete data base of cross sections, doing only a few measurements to normalize the models in the domain of interest for nuclear analysis. We have performed such measurements for the 12C(p, p) 12C reaction in the energy range 0.300-3.5 MeV, and the angular range 110-180°. The data have been analyzed by the R matrix model. Most of the light element reaction cross sections will be measured and analyzed using either the R matrix model for compound nuclear reactions, or a nuclear transfer model for stripping or pick up interactions, depending on the nuclear mechanism of production. Parallel to this, we are developing an analysis model based on the GEANT library developed at CERN. It consists of an events generator, using a Monte Carlo method, and a geometrical description of the experimental set up. It takes into account all the nuclear reactions (particle and gamma-ray emissions) but not the X-ray emission.

Berthier, B.; Berthoumieux, E.; Gallien, J. P.; Moreau, C.; Raoux, A. C.

1997-07-01

228

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

229

Computando lo aspero Por que se cuelgan las computadoras?  

E-print Network

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

Figueira, Santiago

230

Grato colofn a las ligas internas Mar Jover, mejor  

E-print Network

los dos preciados galardones del Consejo Superior de Deportes. CUADERNILLO DEL DEPORTE EN LA premios estuvo presidida por el Vicerrector de Cultura, Deporte y Política Lingüística, Carles Cortés a s competiciones internas, las del deporte de todos, parece que la valoración general es muy positiva. Presidió la

Escolano, Francisco

231

LAS NOTICIAS A NEWSLETTER FOR K-12 TEACHERS  

E-print Network

LAS NOTICIAS A NEWSLETTER FOR K-12 TEACHERS CENTER FOR LATIN AMERICAN STUDIES UNIVERSITY CENTER a new beginners class in Portuguese? Come join the Center for Latin American Studies in fall 2013 in late September, 2013. Classes will meet at the Center for Latin American Studies on the Pitt Oakland

Machery, Edouard

232

Solar Hot Water for a Motor Inn -- Las Vegas, Nevada  

NASA Technical Reports Server (NTRS)

Solar hot-water installation at motor inn in Las Vegas, Nevada is described in report containing descriptions of design, philosophy, operation of system and problems and solutions. Provides drawings of solar roof plan, operator's instructions, manufacturers' brochures and copy of acceptance report.

1982-01-01

233

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

ERIC Educational Resources Information Center

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

Ortuno, Marian

2012-01-01

234

Control del dolor: Apoyo para las personas con cáncer  

Cancer.gov

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

235

Selección de los principales problemas de seguridad de las vacunas  

Microsoft Academic Search

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

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

2008-01-01

236

CAPTULO XV LAS HERRAMIENTAS LTICAS DEL "SOLSONI": DISTRIBUCIN DE  

E-print Network

, industria lítica, variscita e intercambios. ABSTRACT Recent studies realized on rock salt exploitation, the economic flows have been studied related to the salt circulation and the provisioning of the rock tools, Catalonia, Neolithic, rock salt, mine, blond flint, rock tools, variscite, exchanges. 213 Las herramientas

Paris-Sud XI, Université de

237

Castelldefels Salut: Las redes sociales y la Atención Primaria  

Microsoft Academic Search

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

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

2012-01-01

238

Las Vegas randomized algorithms in distributed consensus problems  

Microsoft Academic Search

We consider distributed consensus problems from the viewpoint of probabilistic algorithms. In particular, we provide an overview on some specific problems where randomization is critical in achieving consensus among multiple agents. Further, we show that the randomized algorithms which are used in this setting are the so-called Las Vegas randomized algorithms (e.g. [24]). This class is different from that of

Hideaki Ishii; Roberto Tempo

2008-01-01

239

TCD Research Methods Fall 2004 LAS 6292 (Sect. 6816x)  

E-print Network

TCD Research Methods ­ Fall 2004 LAS 6292 (Sect. 6816x) Thursday, Periods 6-8 (12:50- 3:50) 376 and development. Required textbooks, available at Goering's Books and Bagels: 1. Bernard, H.R. 1995. Research Methods in Anthropology: Qualitative and Quantitative Approaches, 3rd edition. AltaMira Press, Walnut

Pilyugin, Sergei S.

240

College of Arts and Sciences LAS Latin American Studies  

E-print Network

College of Arts and Sciences LAS Latin American Studies KEY: # = new course * = course changed INDEPENDENT WORK IN LATIN AMERICAN STUDIES. (3) Directed study for students wishing to do specialized work on a topic related to the Latin American Studies area. May be repeated to a maximum of six credits. Prereq

MacAdam, Keith

241

Victoria Varga, `04 Las Matas de Farfan, Dominican Republic  

E-print Network

based on their nutritional health. Many of the children were malnourished, anemic, or parasite ridden of Charity at their Nutritional Center for Children in Las Matas de Farfan was one of the most rewarding, Elaine and I worked with some of the most beautiful children that temporarily resided there. They were

242

Las zonas mineras españolas a finales del XIX  

Microsoft Academic Search

PRESENTACIÓN Jugh James Rose, capellán de las compañías mineras inglesas, francesas y alemanas de Linares, es el autor de la obra Untrodden Spain and her black country being sketches of the life and character of the Spaniard of the interior publicada en dos volúmenes en Londres en 1875. De él sabemos que ejerció como capellán del ejército en Dover y

María Antonia López Burgos

2003-01-01

243

QUARTERLY PROGRESS REPORT University of Nevada, Las Vegas  

E-print Network

measurements and off-road experiments using different vehicles (ATV, motorcycle, dune buggy) were performed, Effects Of Wind Erosion, Off-Road Vehicular Activity, Atmospheric Conditions And The Proximity- road vehicle area close to Las Vegas, NV. A mapping approach to assess dust emission potential

Ahmad, Sajjad

244

Tree-Killing Las Conchas Fire in New Mexico  

USGS Multimedia Gallery

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

245

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

246

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

247

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.

248

Nuclear Science and Engineering  

NSDL National Science Digital Library

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

2011-03-16

249

Nuclear Cryogenic Propulsion Stage  

NASA Technical Reports Server (NTRS)

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

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

2012-01-01

250

The nuclear option  

SciTech Connect

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 could represent weeks or months of interplanetary travel time. Attention is given to the achievements of the historical Nuclear Engine for Rocket Vehicle Application, Helios, and Orion design programs, as well as to the current Vehicle for Interplanetary Space Transportation Applications, which is fusion-based.

Herken, G.

1992-03-01

251

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

252

Nuclear Renaissance Requires Nuclear Enlightenment W J Nuttall  

E-print Network

Nuclear Renaissance Requires Nuclear Enlightenment W J Nuttall Judge Business School, Cambridge University, Trumpington Street Cambridge, CB2 1AG UK Abstract Nuclear energy was developed by technocratic as a result of global anthropogenic climate change, nuclear power might actually represent a means to preserve

Aickelin, Uwe

253

Nuclear Science Research Facilities Nuclear Science User Guide  

E-print Network

LANSCE User Guide Nuclear Science Research Facilities #12;#12;Nuclear Science User Guide Table of Contents Introduction 3 Nuclear Science Research Facilities 3 The LANSCE Accelerator 4 Time structure techniques 8 Nuclear Science User Program 11 Proposal Process 13 Information for Prospective Users 14

254

NUCLEAR ENERGY Annals of Nuclear Energy 32 (2005) 812842  

E-print Network

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

Demazière, Christophe

255

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.

256

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.

257

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.

258

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

259

Going nuclear: The spread of nuclear weapons 1986-1987  

SciTech Connect

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 specific topics as Israel's nuclear arsenal, nuclear terrorism and its global security implications, arms control and nuclear safeguards, international treaties, weapons buildup, and political radicalism and unrest in nuclear-threshold nations.

Spector, L.S.

1987-01-01

260

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

261

18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.  

Code of Federal Regulations, 2012 CFR

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

2012-04-01

262

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

263

18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.  

Code of Federal Regulations, 2011 CFR

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

2011-04-01

264

18 CFR 1316.9 - Nuclear energy hazards and nuclear incidents.  

Code of Federal Regulations, 2014 CFR

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

2014-04-01

265

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

266

State Nuclear Profiles  

EIA Publications

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

2012-01-01

267

Nuclear Scans (Cancer)  

MedlinePLUS

... Nuclear scans make pictures based on the body’s chemistry rather than on physical shapes and forms (as ... risk of being toxic or causing an allergic reaction. Some people may have pain or swelling at ...

268

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

269

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

270

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

271

The Canadian Nuclear FAQ  

NSDL National Science Digital Library

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

Whitlock, Jeremy

1996-04-24

272

Nuclear Physics with trapped  

E-print Network

Essentially the entire star is consumed in a gigantic explosion Rough analogy: like detonating a hydrogen bomb the size of the Earth that has the mass of the Sun #12;2/2/2013Dan Melconian Nuclear physics

Boas, Harold P.

273

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

274

Whistleblowers and nuclear medicine.  

PubMed

Healthcare facilities that practice nuclear medicine are subject to federal "whistleblower" protection laws when an employee reports a potentially unsafe radiological condition. This article addresses enforcement of the applicable sections of the Atomic Energy Act and the Nuclear Regulatory Commission's regulations in order to help such facilities avoid running afoul of those laws, which can result in fines, generate civil lawsuits by the claimant, and significantly disrupt the operation of a healthcare facility. PMID:10538012

Rysavy, C F; Donald, J W

1999-01-01

275

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

276

Nuclear Power Plant  

NSDL National Science Digital Library

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

John Pratte

277

International nuclear trade and nonproliferation  

Microsoft Academic Search

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

1990-01-01

278

Nuclear Energy Research Brookhaven National  

E-print Network

Nuclear Energy Research Brookhaven National Laboratory William C. Horak, Chair Nuclear Science and Technology Department #12;BNL Nuclear Energy Research Brookhaven Graphite Research Reactor - 1948 National&T Department #12;Nuclear Energy Today 435 Operable Power Reactors, 12% electrical generation (100 in US, 19

Ohta, Shigemi

279

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.

280

Nuclear War and Science Teaching.  

ERIC Educational Resources Information Center

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

Hobson, Art

1983-01-01

281

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

282

Nuclear power plant life extension  

Microsoft Academic Search

Nuclear plant life extension represents an opportunity to achieve additional productive years of operation from existing nuclear power facilities. This is particularly important since operating licenses for over 50 GW of nuclear capacity will expire by the year 2010. By the year 2015, 85% of the total planned nuclear electric capacity will face retirement due to license expirations. Achieving additional

D. D. Carlson; L. D. Bustard; D. L. Harrison

1986-01-01

283

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

284

Nuclear and radiochemical analysis  

SciTech Connect

In this, their second fundamental review under the present authorship and title, they have chosen to continue their emphasis on topics representing the use of nuclear properties for chemical analysis. Excluded are topics in the areas of health physics, nuclear spectroscopy (unless directly related to analysis), nuclear engineering, fusion, radioactive waste disposal, fallout, and nuclear and particle physics. Other topics such as particle-induced X-ray emission (PIXE), plasma desorption mass spectrometry, radioimmunoassay, Moessbauer spectroscopy, nuclear dating methods, and radiotracer applications are treated briefly here, since they are adequately covered in other current reviews in this or other major journals. Only a brief mention is made of well logging, since many of the advances in this field do not currently appear in the open literature. As in their previous review, they finish with short comments on some interesting developments in nuclear and radiochemistry that are not strictly analytical in nature. This review is based largely on a computerized keyword search of Chemical Abstracts (CA) for the period from mid-November 1985 through December 31, 1987.

Ehmann, W.D.; Yates, S.W.

1988-06-15

285

Panel report: nuclear physics  

SciTech Connect

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

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

2010-01-01

286

Fuentes de Fuentes: Paz y las raíces de Todos los gatos son pardos.  

E-print Network

, economía y las demás bases de la nación mexicana. En Posdata, Paz revela el fondo de las palabras de Cortés y Moctezuma, y sus implicaciones: Si el hombre es doble y triple, también lo son las civilizaciones y las sociedades. Cada pueblo sostiene un... azteca las caras de dioses (y la respuesta es "no" entonces), pero va a ver las caras de hombres que en sus papeles histórico-apocalípticos tomarán el papel de dioses en la destrucción de toda una civilización. Y obviamente esta destrucción del imperio...

Brower, Gary

1971-10-01

287

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.

288

Calidad del aire interior y salud en las viviendas  

E-print Network

Calidad del aire interior y salud en las viviendas temporales de FEMA A los residentes de los que usted pueda tener sobre la calidad del aire y el formaldehído en los tráileres de FEMA. Usted pequeños, como los tráileres de FEMA, los venenos para matar insectos también pueden irritar l a nariz o la

289

Las ciudades de Andalucía ante la sociedad del conocimiento  

Microsoft Academic Search

La relación entre competitividad económica y posicionamiento de los territorios en la sociedad del conocimiento cobra cada vez mayor protagonismo. Despiertan así especial interés aquellos ámbitos que realizan un esfuerzo por incrementar la producción, difusión y aplicación de conocimiento para mejorar el funcionamiento de sus empresas y la calidad de vida de sus habitantes.\\u000aPor su parte, las ciudades se

Ricardo Méndez Gutiérrez del Valle; Luis Abad Aragón; Inmaculada Caravaca Barroso; Gema González Romero

2010-01-01

290

Solar hot water system installed at Las Vegas, Nevada  

NASA Technical Reports Server (NTRS)

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

291

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

Microsoft Academic Search

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

Sydney A. Hare

2012-01-01

292

UNIVERSITY OF NEVADA, LAS VEGAS School of Social Work  

E-print Network

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

Ahmad, Sajjad

293

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

294

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

EPA Science Inventory

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

295

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

EPA Science Inventory

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

296

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

297

Nuclear concepts/propulsion  

NASA Technical Reports Server (NTRS)

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

Miller, Thomas J.

1993-01-01

298

Nuclear age thinking  

SciTech Connect

According to the practicalist school, thinking emerges from activity and each human practice is giving food to its own distinctive kinds of perception, conduct, and perspective of the world. The author, while studying and describing developments after the commencement of the nuclear age in many fields of human behavior and knowledge, including the social sciences, particularly psychology and international politics, became an adherent to the practicalist philosophy when he perceived new relevant thoughts coming to his mind at the same time. Indeed writing is a learning experience. He has, therefore, systematically included these thoughts in the following pages and synoptically characterized them in the title: Nuclear Age Thinking. He considers this kind of thinking as automatic, conscious activity which is gradually influencing our choices and decisions. The author has reservations as regards Albert Einstein's saying that the unleashed power of the atom changed everything save our modes of thinking, because the uncontrollability of nuclear energy is apparently in the subconscious of mankind nowadays, influencing the development of a new mode of thinking, and that is the nuclear age thinking which is the subject of this book. Nuclear age thinking drives from the collective fear of extinction of life on earth due to this new power at man's disposal, and it is not only limited to the change in the conventional meaning of the words war and peace.

Depastas, A.N.

1990-01-01

299

Extremes of nuclear structure  

NASA Astrophysics Data System (ADS)

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

1999-09-01

300

Nuclear ``pasta'' formation  

NASA Astrophysics Data System (ADS)

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

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

2013-12-01

301

Nuclear transfer in ruminants.  

PubMed

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

Lee, Joon-Hee; Maalouf, Walid E

2015-01-01

302

Strangeness Nuclear Physics  

NASA Astrophysics Data System (ADS)

Recent progress in strangeness nuclear physics is reported. The high-resolution (e, eK) reaction spectroscopy has been established at JLab as a new means to study ? hypernuclear structure. Precision ?-ray spectroscopy of hypernuclei has revealed fine structure of various light ? hypernuclei and clarified ?N spin-dependent interactions. Production of neutron-rich ? hypernuclei has become successful by using the (?, K) reaction at KEK. Several experimental data have implied existence of deeply-bound K OverBar-nuclear systems, and their theoretical research is also activated. Kaonic X ray measurements in light nuclei are also being carried out. The J-PARC and other facilities will allow us to accelerate these experimental studies of ? hypernuclei and K nuclear systems and to extend hypernuclear physics to double strangeness systems.

Tamura, Hirokazu

2009-08-01

303

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

304

Instantánea de los cánceres de hígado y de las vías biliares  

Cancer.gov

Información sobre las tendencias de incidencia, mortalidad y financiamiento del NCI sobre los cánceres de hígado y de las vías biliares; así como ejemplos de actividades del NCI y adelantos en la investigación de estos tipos de cáncer.

305

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

Code of Federal Regulations, 2010 CFR

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

2010-07-01

306

Neutrinos in Nuclear Physics  

E-print Network

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

R. D. McKeown

2014-12-03

307

Nuclear War Survival Skills  

SciTech Connect

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

Kearny, C.H.

2002-06-24

308

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

309

Nuclear Masses in Astrophysics  

E-print Network

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

Christine Weber; Klaus Blaum; Hendrik Schatz

2008-12-09

310

Clustering in nuclear environment  

NASA Astrophysics Data System (ADS)

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

Röpke, G.

2014-12-01

311

STRUCTURAL BIOLOGY: Nuclear Trafficking  

NSDL National Science Digital Library

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

Murray Stewart (MRC Laboratory of Molecular Biology; )

2003-11-28

312

Introduction to nuclear physics.  

PubMed

Photons for counting or imaging applications in nuclear medicine result from several processes. Gamma rays are produced from excited state transitions after beta decay and electron capture. Annihilation photons result from positron decay. The de-excitation of the atom after electron capture results in the production of characteristic x rays or Auger electrons. Metastable state transitions result in gamma ray emission or internal conversion electrons. All radiopharmaceuticals used in diagnostic nuclear medicine applications are tagged with radionuclides that emit photons as a result of one of these processes. PMID:9672982

Patton, J A

1998-01-01

313

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

314

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

315

Nuclear structure database  

SciTech Connect

A nuclear structure database has been created from the Table of Isotopes level-scheme file. This database contains evaluated data (through 1977) on level and deexcitation properties for all known isotopes from radioactive decay and nuclear reaction studies. The data are organized in simple array formats to enable rapid searches for specific level or decay information. Examples of the use of this database to study the properties of first excited J/sup ..pi../ = 2/sup +/ states in even-even nuclei and Weisskopf enhancements of delayed ..gamma..-ray transitions are shown. 6 figures, 3 tables.

Firestone, R.B.; Browne, E.

1980-06-01

316

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

317

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

318

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

E-print Network

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

Campanario, Juan Miguel

319

Weak nuclear forces cause the strong nuclear force  

E-print Network

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

E. L. Koschmieder

2007-12-11

320

Nuclear effects in Neutrino Nuclear Cross-sections  

E-print Network

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

S. K. Singh; M. Sajjad Athar

2007-10-24

321

Nuclear, chemical, and physical characterization of nuclear materials  

Microsoft Academic Search

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

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

2008-01-01

322

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

E-print Network

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

Escolano, Francisco

323

El financiamiento de la educación pública en el Perú: el rol de las familias  

Microsoft Academic Search

Las familias que matriculan a sus hijos en escuelas públicas en el Perú financian una parte importante de la educación de sus hijos. Saavedra, Melzi y Miranda (1997) muestran que casi un tercio de lo que la sociedad peruana en su conjunto gasta en los niños matriculados en las escuelas públicas corresponde a contribuciones de las familias. Parte de estas

Jaime Saavedra; Pablo Suarez

2002-01-01

324

O R E G O N Informe Final Sobre el Estudio de las  

E-print Network

WASHINGTON O R E G O N IDAHO HANFORD Resumen del Informe Final Sobre el Estudio de las Enfermedades de la Tiroides en Hanford Acerca del Estudio Sobre las Enfermedades de la Tiroides en Hanford. (HTDS por su sigla en inglés) El estudio sobre las enfermedades de la tiroides en Hanford (HTDS por su sigla

325

Tecnología de información e innovación. Factores clave de la competitividad en las pequeñas y medianas empresas  

Microsoft Academic Search

En el presente trabajo se muestran algunas políticas ejecutadas por el gobierno nacional, en función de im- pulsar el desarrollo científico y tecnológico del país, así como las principales limitaciones que presentan las peque- ñas y medianas empresas (pymes) para acceder a las tecnologías de información y comunicación, tomando como base los resultados de un diagnóstico efectuado a 8 pymes

Leal Morantes; Miraidy Elena

326

Taller de Ciencia para Jvenes para alumnos de bachillerato San Cristobal de las Casas, Chiapas  

E-print Network

Taller de Ciencia para Jóvenes para alumnos de bachillerato San Cristobal de las Casas, Chiapas 3-7 agosto, 2009 CONVOCATORIA El "Taller de Ciencia para Jóvenes" en San Cristobal de las Casas (Chiapas), está dirigido a los alumnos de escuelas de nivel bachillerato que se sienten atraidos a las ciencias

Bor, Gil

327

INVESTIGACIN DIDCTICA 179ENSEANZA DE LAS CIENCIAS, 1999, 17 (2), 179-192  

E-print Network

INVESTIGACI�N DIDÁCTICA 179ENSE�ANZA DE LAS CIENCIAS, 1999, 17 (2), 179-192 ¿C�MO ENSE�AR CIENCIAS de las Ciencias. Departamento de Física. Universidad de Alcalá de Henares. 28871 Alcalá de Henares ciencias ha identifi- cado diversas dificultades en los procesos de aprendiza- je de las ciencias que

Campanario, Juan Miguel

328

INVESTIGACIN DIDCTICA 369ENSEANZA DE LAS CIENCIAS, 2000, 18 (3), 369-380  

E-print Network

INVESTIGACI�N DIDÁCTICA 369ENSE�ANZA DE LAS CIENCIAS, 2000, 18 (3), 369-380 EL DESARROLLO DE LA METACOGNICI�N EN EL APRENDIZAJE DE LAS CIENCIAS: ESTRATEGIAS PARA EL PROFESOR Y ACTIVIDADES ORIENTADAS AL ALUMNO CAMPANARIO, JUAN MIGUEL Grupo de Investigación en Aprendizaje de las Ciencias. Departamento de Física

Campanario, Juan Miguel

329

93ENSEANZA DE LAS CIENCIAS, 2004, 22(1), 93104 EL ENFOQUE CONEXIONISTA EN PSICOLOGA COGNITIVA  

E-print Network

93ENSE�ANZA DE LAS CIENCIAS, 2004, 22(1), 93­104 EL ENFOQUE CONEXIONISTA EN PSICOLOGÍA COGNITIVA Y ALGUNAS APLICACIONES SENCILLAS EN DIDÁCTICA DE LAS CIENCIAS Campanario, Juan Miguel Aprendizaje de las Ciencias. Departamento de Física. Universidad de Alcalá http://www.uah.es/otrosweb/jmc juan

Campanario, Juan Miguel

330

319ENSEANZA DE LAS CIENCIAS, 2003, 21 (2), 319-328 CONTRA ALGUNAS CONCEPCIONES  

E-print Network

319ENSE�ANZA DE LAS CIENCIAS, 2003, 21 (2), 319-328 DEBATES CONTRA ALGUNAS CONCEPCIONES Y PREJUICIOS COMUNES DE LOS PROFESORES UNIVERSITARIOS DE CIENCIAS SOBRE LA DIDÁCTICA DE LAS CIENCIAS CAMPANARIO, JUAN MIGUEL Aprendizaje de las Ciencias. Departamento de Física. Universidad de Alcalá de Henares

Campanario, Juan Miguel

331

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

ERIC Educational Resources Information Center

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

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

332

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

E-print Network

FUSION NUCLEAR SCIENCE PROGRAM & SUPPORTING FUSION NUCLEAR SCIENCE FACILITY (FNSF): UPDATE ON DEVELOPING THE MISSION & RESEARCH GOALS Gerald A. Navratil Columbia University Fusion Power Associates 32st in order to apply the knowledge we gained about burning plasma state #12;FUSION NUCLEAR SCIENCE PROGRAM

333

Weak Nuclear Forces cause the Strong Nuclear Force  

SciTech Connect

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

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

2008-05-29

334

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

ERIC Educational Resources Information Center

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

Journal of College Science Teaching, 1983

1983-01-01

335

Solutions of nuclear pairing  

SciTech Connect

We give the exact solution of orbit dependent nuclear pairing problem between two nondegenerate energy levels using the Bethe ansatz technique. Our solution reduces to previously solved cases in the appropriate limits including Richardson's treatment of reduced pairing in terms of rational Gaudin algebra operators.

Balantekin, A. B.; Pehlivan, Y. [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

2007-11-15

336

Washington: Hanford Nuclear Reservation  

Atmospheric Science Data Center

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

2014-05-15

337

Nuclear light bulb  

NASA Technical Reports Server (NTRS)

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

Latham, Tom

1991-01-01

338

Viewpoints on Nuclear Education.  

ERIC Educational Resources Information Center

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

Social Education, 1983

1983-01-01

339

Controlled Nuclear Fusion.  

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: Importance of Fusion Energy; Conditions for Nuclear Fusion; Thermonuclear Reactions in Plasmas; Plasma Confinement by Magnetic Fields; Experiments With Plasmas; High-Temperature…

Glasstone, Samuel

340

Space Nuclear Safety Program  

NASA Astrophysics Data System (ADS)

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

George, T. G.

1986-02-01

341

Opposition to Nuclear Armament  

Microsoft Academic Search

In view of our security requirements, nuclear weapons are militarily useless; in view of the history of their development, they are militarily dangerous. The standard answers to the problem are not solutions: civil defense programs are inadequate, if not infeasible; sophisticated technological approaches to defense face unsurmountable technical and military difficulties; and our current deterrent policies—balance of forces, the use

Admiral Noel Gayler

1983-01-01

342

Nuclear waste solutions  

DOEpatents

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

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

1987-01-01

343

Anti-nuclear fantasies  

Microsoft Academic Search

The author critiques two recent anti-nuclear books - Indefensible Weapons by two American professors, Robert Jay Lifton and Richard Falk; and Beyond the Cold War, a collection of polemical essays by E.P. Thompson, British Marxist historian. He sees a common thread in these books of moral rejection of traditional Western policies more than a rejection of the weapons themselves. Western

1983-01-01

344

Nuclear War Survival Skills  

Microsoft Academic Search

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

Kearny

2002-01-01

345

Nuclear proliferation: who's next  

SciTech Connect

Unsettling developments in the past 18 months could lead to nuclear competition and terrorism in the world's least-stable regions. US efforts to stop the proliferation of nuclear weapons seem ineffective in view of such unsettling developments, especially among the states whose programs are most advanced. The task is more difficult than it was a decade ago. Then the policy of export restraint on the part of nuclear supplier countries formed the basis for a unified strategy that helped retard proliferation across the board. Today each country on the nuclear threshold must be addressed individually, taking into account its unique regional concerns and its particular relations with the US. If there is a unifying thread to US efforts to stop proliferation, it is that these have become increasingly political and diplomatic. In such a setting it is all the more important to make nonproliferation a top priority on the US foreign policy agenda. Unfortunately, other concerns have eclipsed nonproliferation in the recent past. The effect of that neglect is increasingly evident. 9 references, 1 figure, 1 table.

Spector, L.S.

1987-05-01

346

Politics of nuclear waste  

SciTech Connect

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

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

1982-01-01

347

Nuclear Quadrupole Resonance  

Microsoft Academic Search

Nuclear quadrupole resonance is a recently developed branch of radio-frequency spectroscopy which is concerned with magnetic resonance absorption in crystals. This absorption is due to reorientation of the nonspherical atomic nuclei against crystalline electric fields. Related phenomena in isolated molecules are briefly mentioned in the Introduction A. This is followed in Sec. B by an elementary treatment of the electrostatic

H. G. Dehmelt

1954-01-01

348

NUCLEAR SPIN RESONANCE  

Microsoft Academic Search

The first experiments on nuclear quadrupole interactions in crystals ; were carried out by R. V. Pound (Phys. Rev., magnetic resonance lines and by H. ; G. Dehmelt and H. Kruger (Naturwiss., 37: 111(1950)) who observed the absorption ; of radiowaves in a neutral magnetic field. The work was subsequently continued ; in two directions: toward the study of large,

V. S. Grechishkin; N. E. Ainbinder

1963-01-01

349

Nuclear spin circular dichroism  

SciTech Connect

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

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

2014-04-07

350

Preserving Nuclear Grade Knowledge  

SciTech Connect

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

Lange, Bob

2008-02-05

351

Nuclear Radiation Damages Minds!  

ERIC Educational Resources Information Center

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

Blai, Boris, Jr.

352

Nuclear Magnetic Resonance Gyroscope  

NASA Astrophysics Data System (ADS)

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

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

2012-06-01

353

Query Nuclear Explosions Database  

NSDL National Science Digital Library

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

2002-01-01

354

Producing Nuclear Power  

ERIC Educational Resources Information Center

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

Childress, Vincent W.

2010-01-01

355

Reflections on nuclear warfare  

Microsoft Academic Search

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

J P Evans

1983-01-01

356

History of Nuclear India  

Microsoft Academic Search

India emerged as a free and democratic country in 1947, and entered into the nuclear age in 1948 by establishing the Atomic Energy Commission (AEC), with Homi Bhabha as the chairman. Later on the Department of Atomic Energy (DAE) was created under the Office of the Prime Minister Jawahar Lal Nehru. Initially the AEC and DAE received international cooperation, and

Ram Chaturvedi

2000-01-01

357

Nuclear Power in Space.  

ERIC Educational Resources Information Center

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

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

358

Restructuring nuclear regulations.  

PubMed Central

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

Mossman, Kenneth L

2003-01-01

359

Nuclear Lamins and Neurobiology  

PubMed Central

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

Jung, Hea-Jin; Lee, John M.

2014-01-01

360

Nuclear Medical Technology Training.  

ERIC Educational Resources Information Center

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

Simmons, Guy H., Ed.

361

UNDERGROUND NUCLEAR DETONATIONS  

Microsoft Academic Search

Since 1952 eight nuclear explosions have been fired underground at the ; Atomic Energy Commission's Nevada Test Site. The explosions varied in energy ; release from 55 tons to 19,000 tons of TNT equivalent. Depths of burial varied ; from shallow, to produce cratering, to deep, where no visible effects appeared on ; the surface. The major experimental data from

G. W. Johnson; G. H. Higgins; C. E. Violet

1959-01-01

362

Nuclear Science & Engineering Directorate  

E-print Network

-Battellefor the U.S. Department of Energy ORNL re-establishing DOE capability to produce 238Pu for NASA space thermal flux nuclear reactor. ORNL's High Flux Isotope Reactor and INL's Advanced Test Reactor on several methods for generating electricity in space. For missions operating between the Sun and Mars

Pennycook, Steve

363

A nuclear magnetometer  

Microsoft Academic Search

The basic principles of the nuclear free precession magnetometer are briefly described, and full details given of the coils, switching circuits and transistorized amplifying equipment of such a magnetometer. Accuracy of absolute measurement of the earth's total field is ±10 ?G, and even better when only relative measurements are required. Setting-up of the instrument, which requires no calibration, and taking

G. S. Waters; P. D. Francis

1958-01-01

364

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

365

Nuclear Structure and Chromosome Evolution  

NSDL National Science Digital Library

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

Dr. Lindsay Shopland (The Jackson Laboratory)

2010-05-19

366

Germany Phases Out Nuclear Power  

NSDL National Science Digital Library

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

WGBH Educational Foundation

2012-08-31

367

India's Nuclear Arms Control Quandary  

Microsoft Academic Search

While the international community seems ready to move forward on the CTBT, FMCT, and achieving nuclear zero, New Delhi's participation likely will be limited until its leaders believe that they possess a nuclear arsenal capable of minimal deterrence.

Ramamurti Rajaraman

2010-01-01

368

Nuclear Proliferation and Grand Challenges  

SciTech Connect

Nuclear engineer Dr. Kathy McCarthy leads systems analysis. She talks about proliferation and the grand challenges of nuclear R&D. For more information about INL energy research, visit http://www.facebook.com/idahonationallaboratory.

McCarthy, Kathy

2009-01-01

369

Adventures in scientific nuclear diplomacy  

NASA Astrophysics Data System (ADS)

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

Hecker, Siegfried S.

2014-05-01

370

The Nuclear Debate in Film  

ERIC Educational Resources Information Center

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

Dowling, John

1977-01-01

371

Operational nuclear deterrence. Final report  

SciTech Connect

During the Cold War the superpower rivalry between the United States and the Soviet Union produced nuclear strategy based upon a now familiar concept, strategic nuclear deterrence. As we adjust to a remarkably different global security environment, one characteristic of which is the proliferation of weapons of mass destruction, a natural question arises: can deterrence play a part in nuclear strategies focused on regional foes possessing small nuclear arsenals. The paper examines the viability of 'operational' nuclear deterrence employed in the resolution of regional conflicts. The object of operational nuclear deterrence is to persuade an adversary not to use nuclear weapons. To be effective, a deterrent strategy must be credible; the enemy must perceive that we possess the means, will, and commitment to severely retaliate.... Nuclear deterrence, Regional conflict, Strategic deterrence, Operational deterrence.

Bedey, D.F.

1993-01-01

372

Problematic Aspects of Nuclear Education.  

ERIC Educational Resources Information Center

Reviewing research on children's understanding of nuclear war, Tizard suggests that educators and researchers have yet to understand the factors influencing children's attitudes, anxieties, and knowledge of nuclear issues. (Author/SK)

Tizard, Barbara

1984-01-01

373

Adventures in scientific nuclear diplomacy  

SciTech Connect

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

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

2014-05-09

374

Nuclear thermal propulsion program overview  

NASA Technical Reports Server (NTRS)

Nuclear thermal propulsion program is described. The following subject areas are covered: lunar and Mars missions; national space policy; international cooperation in space exploration; propulsion technology; nuclear rocket program; and budgeting.

Bennett, Gary L.

1991-01-01

375

Psychoanalysis and the nuclear threat  

SciTech Connect

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

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

1988-01-01

376

A Career in Nuclear Energy  

SciTech Connect

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

Lambregts, Marsha

2009-01-01

377

Nuclear Fuel Reprocessing  

SciTech Connect

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

Harold F. McFarlane; Terry Todd

2013-11-01

378

Nuclear Propulsion in Space (1968)  

ScienceCinema

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

None

2014-06-17

379

Nuclear Propulsion in Space (1968)  

SciTech Connect

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

None

2012-06-23

380

Persisten las diferencias de cáncer de seno en hispanas con el mismo acceso a la atención médica  

Cancer.gov

Con el mismo acceso a servicios médicos, persisten las diferencias en cuanto al tamaño, el estadio y el grado del cáncer de seno en las mujeres hispanas en comparación con las mujeres blancas no hispanas.

381

Handbooks in radiology: Nuclear medicine  

Microsoft Academic Search

This series of handbooks covers the basic facts, major concepts and highlights in seven radiological subspecialties. ''Nuclear Medicine'' is a review of the principles, procedures and clinical applications that every radiology resident and practicing general radiologist should know about nuclear medicine. Presented in an outline format it covers all of the organ systems that are imaged by nuclear medicine.

Datz

1988-01-01

382

Nuclear Technology: Making Informed Decisions.  

ERIC Educational Resources Information Center

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

Altshuler, Kenneth

1989-01-01

383

Game Imaging Meets Nuclear Reality  

ScienceCinema

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

Michel, Kelly; Watkins, Adam

2014-08-12

384

Game Imaging Meets Nuclear Reality  

SciTech Connect

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

Michel, Kelly; Watkins, Adam

2011-03-21

385

Job Prospects for Nuclear Engineers.  

ERIC Educational Resources Information Center

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

Basta, Nicholas

1985-01-01

386

Nuclear Organization and Genome Function  

E-print Network

Nuclear Organization and Genome Function Kevin Van Bortle and Victor G. Corces Department-range interactions and have proposed roles in nuclear organization. In this review, we explore recent findings for the roles of insulators in nuclear organization. 163 Annu.Rev.CellDev.Biol.2012.28:163-187.Downloadedfromwww

Corces, Victor G.

387

Nuclear energy law after Chernobyl  

Microsoft Academic Search

This work examines the legal issues surrounding the possibility of accidents at nuclear installations in Europe. Contents include: Regulations and control by international organizations in the context of a nuclear accident; The role of Euratom; Border installations: the interaction of administrative, European community and public international law; and Border installations: the experience of Wackersdorf. Concepts of nuclear liability and the

P. Cameron; L. Harcher

1988-01-01

388

Report Card on Nuclear Power  

ERIC Educational Resources Information Center

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

Novick, Sheldon

1974-01-01

389

Job Prospects for Nuclear Engineers.  

ERIC Educational Resources Information Center

Discusses trends in job opportunities for nuclear engineers. Lists some of the factors influencing increases and decreases in the demand for nuclear engineers. Describes the effects on career opportunities from recent nuclear accidents, military research and development, and projected increases of demand for electricity. (TW)

Basta, Nicholas

1987-01-01

390

Nuclear power and public perception  

Microsoft Academic Search

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

Levenson

1976-01-01

391

Educators and the Nuclear Threat.  

ERIC Educational Resources Information Center

Discusses education's long-term role in preventing nuclear war and reports on a three-state survey of 118 high school seniors on their knowledge of nuclear war issues. Describes educational groups' activities around the issues and recounts the author's personal experiences at Hiroshima (Japan) and growing awareness of nuclear problems. (RW)

Elam, Stanley M.

1983-01-01

392

Overview paper on nuclear power  

SciTech Connect

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

Spiewak, I.; Cope, D.F.

1980-09-01

393

U.S. Nuclear Regulatory Commission: What Is Nuclear Energy?  

NSDL National Science Digital Library

This is a web page for secondary students designed to acquaint them with the basics of nuclear energy, nuclear reactors, dangers of radiation, and radioactive waste. It is easy to read, and filled with age-appropriate diagrams, photos, and illustrations of reactors, waste disposal facilities, and nuclear containment vessels. It would be a solid addition to a unit on nuclear reactions and/or impacts to society of nuclear energy generation. This resource is part of the NRC's free library of teaching resources. See Related Materials for a link to the full collection.

2011-07-22

394

Nuclear Power - Operation, Safety and Environment  

E-print Network

and tsunami events in Japan resulted in the nuclear accident that forced us to rethink our approach to nuclear safety, design requirements and facilitated growing interests in advanced nuclear energy systems, next generation nuclear reactors, which...

395

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.

396

Nuclear matrins: identification of the major nuclear matrix proteins.  

PubMed Central

A preparative two-dimensional polyacrylamide gel system was used to separate and purify the major Coomassie blue-stained proteins from the isolated rat liver nuclear matrix. Approximately 12 major proteins were consistently found. Of these, 5 proteins represented identified proteins, including nuclear lamins A, B, and C, the nucleolar protein B-23, and residual components of core heterogeneous nuclear ribonucleoproteins. The remaining eight major proteins termed the nuclear matrins consisted of matrin 3 (125 kDa, slightly acidic), matrin 4 (105 kDa, basic), matrins D-G (60-75 kDa, basic), and matrins 12 and 13 (42-48 kDa, acidic). Peptide mapping and two-dimensional immunoblot studies indicate that matrins D-G compose two pairs of related proteins (matrins D/E and F/G) and that none of the matrins resemble the nuclear lamins or any of the other major proteins detected on our two-dimensional gels. Subfractionation immunoblot experiments demonstrated the nearly exclusive localization of matrins F/G and other matrins to the nuclear matrix fraction of the cell. These results were further supported by indirect immunofluorescence microscopy that showed a strictly interior nuclear localization of the matrins in intact cells in contrast to the peripherally located nuclear lamins. We conclude that the nuclear matrins are a major class of proteins of the nuclear matrix interior and are distinct from the nuclear lamins. Images PMID:1946450

Nakayasu, H; Berezney, R

1991-01-01

397

Historical civilian nuclear accident based Nuclear Reactor Condition Analyzer  

NASA Astrophysics Data System (ADS)

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

McCoy, Kaylyn Marie

398

Las tecnologías de información geográfica y su aplicación al análisis urbano. El caso del estudio de los espacios residenciales cerrados en las áreas metropolitanas de Santiago y Valparaíso  

Microsoft Academic Search

El artículo centra su atención en los aspectos metodológicos relacionados con el diseño y confección de una base de datos georeferenciada que detalla los espacios residenciales cerrados edificados en las áreas metropolitanas de Santiago y Valparaíso. En la elaboración de dicho instrumento desempeñan un papel relevante las tecnologías de información geográfica (TIG), entendidas como los Sistemas de Información Geográfica (SIG)

Ma. Luisa Rodrigo Hidalgo; Lily Álvarez Correa; Alejandro Salazar Barrows; Rodrigo Lazcano; Francisco Roa; Daniela Fuentes

2007-01-01

399

Teaching Activities on Horizontal Nuclear Proliferation.  

ERIC Educational Resources Information Center

Provides learning activities concerning the horizontal proliferation of nuclear weapons. Includes step-by-step directions for four activities: (1) the life cycle of nuclear weapons; (2) nuclear nonproliferation: pros and cons; (3) the nuclear power/nuclear weapons connection; and (4) managing nuclear proliferation. (NL)

Zola, John

1990-01-01

400

The NUCLEONICA Nuclear Science Portal  

NASA Astrophysics Data System (ADS)

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

Magill, Joseph; Dreher, Raymond

2009-08-01

401

Materials in Nuclear Waste Disposition  

NASA Astrophysics Data System (ADS)

Commercial nuclear energy has been used for over 6 decades; however, to date, none of the 30+ countries with nuclear power has opened a repository for high-level waste (HLW). All countries with nuclear waste plan to dispose of it in metallic containers located in underground geologically stable repositories. Some countries also have liquid nuclear waste that needs to be reduced and vitrified before disposition. The five articles included in this topic offer a cross section of the importance of alloy selection to handle nuclear waste at the different stages of waste processing and disposal.

Rebak, Raul B.

2014-03-01

402

Advanced Nuclear Fuel Cycle Options  

SciTech Connect

A systematic evaluation has been conducted of the potential for advanced nuclear fuel cycle strategies and options to address the issues ascribed to the use of nuclear power. Issues included nuclear waste management, proliferation risk, safety, security, economics and affordability, and sustainability. The two basic strategies, once-through and recycle, and the range of possibilities within each strategy, are considered for all aspects of the fuel cycle including options for nuclear material irradiation, separations if needed, and disposal. Options range from incremental changes to today’s implementation to revolutionary concepts that would require the development of advanced nuclear technologies.

Roald Wigeland; Temitope Taiwo; Michael Todosow; William Halsey; Jess Gehin

2010-06-01

403

The NUCLEONICA Nuclear Science Portal  

SciTech Connect

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

Magill, Joseph; Dreher, Raymond [European Commission, Joint Research Centre, Institute for Transuranium Elements, Postfach 2340, 76125 Karlsruhe (Germany)

2009-08-19

404

The nuclear connection: A reassessment of nuclear power and nuclear proliferation  

SciTech Connect

This book presents papers on nuclear power. Topics considered include prospects for commercial nuclear power and proliferation, the front end of the fuel cycle, the back end of the fuel cycle, national policy issues, non-proliferation policy, safeguards, controls, sanctions, and nuclear energy and proliferation (a longer perspective).

Weinberg, A.; Alonso, M.; Barkenbus, J.N.

1985-01-01

405

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

ERIC Educational Resources Information Center

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

Hull, Daniel M.

406

Endless generations of nuclear weapons  

SciTech Connect

The author feels that pursuit of Star Wars and continued US nuclear testing is blocking progress toward the eventual worldwide elimination of nuclear weapons. It is also bound to reveal new ways to attack military or civilian targets that will, in turn, stimulate further searches for new types of offensive and defensive nuclear weapons. Some of these developments could intensify the belief that limited nuclear wars can be fought and won. In short, development of new generations of nuclear weapons will provide the kind of positive feedback to the nuclear arms race that will greatly expand its dangers and its costs. Further proliferation of new types of nuclear weapons will increase the already extreme complexity of military planning and response, and the attendant dangers of nuclear war occurring by accident or through misinterpretation of information. Assessments of possible new military threats will become more uncertain as the complexities increase. Uncertainty can lead to catastrophic mistakes. Real or mistakenly perceived gaps in nuclear preparedness are likely to be used as further arguments for vast new military expenditures. We may all come to long for the relative simplicity of military nuclear issues during the first decade or so following the end of World War II. For these reasons, the author is convinced that there should be a halt to all nuclear tests, worldwide, as soon as possible. 2 references.

Taylor, T.B.

1986-11-01

407

Rutherford's Nuclear Model  

NASA Astrophysics Data System (ADS)

Rutherford's nuclear model originally was a theory of scattering that represented both the incoming alpha particles and their targets as point charges. The assumption that the apha particle, which Rutherford knew to be a doubly ionized helium atom, was a bare nucleus, and the associated assumption that the electronic structure of the atom played no significant role in large-angle scattering, had immediate and profound consequences well beyond the special problem for which Rutherford introduced them. The group around him in Manchester in 1911/12, which included Niels Bohr, Charles Darwin, Georg von Hevesy, and Henry Moseley, worked out some of these consequences. Their elucidation of radioactivity, isotopy, atomic number, and quantization marked an epoch in microphysics. Rutherford's nuclear model was exemplary not only for its fertility and picturability, but also for its radical simplicity. The lecturer will not undertake to answer the baffling question why such simple models work.

Heibron, John

2011-04-01

408

American Nuclear Society  

NSDL National Science Digital Library

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

409

Cryogenic nuclear gyroscope  

SciTech Connect

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

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

1980-09-30

410

Third generation nuclear plants  

NASA Astrophysics Data System (ADS)

After the Chernobyl accident, a new generation of Light Water Reactors has been designed and is being built. Third generation nuclear plants are equipped with dedicated systems to insure that if the worst accident were to occur, i.e. total core meltdown, no matter how low the probability of such occurrence, radioactive releases in the environment would be minimal. This article describes the EPR, representative of this "Generation III" and a few of its competitors on the world market.

Barré, Bertrand

2012-05-01

411

Post detonation nuclear forensics  

SciTech Connect

The problem of working backwards from the debris of a nuclear explosion to attempt to attribute the event to a particular actor is singularly difficult technically. However, moving from physical information of any certainty through the political steps that would lead to national action presents daunting policy questions as well. This monograph will outline the operational and physical components of this problem and suggest the difficulty of the policy questions that remain.

Davis, Jay [The Hertz Foundation, 2300 First Street, Suite 250, Livermore, California (United States)

2014-05-09

412

Nuclear spectroscopic studies  

SciTech Connect

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

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

1993-02-08

413

Nuclear Physics Review  

SciTech Connect

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

Walker-Loud, Andre

2014-11-01

414

Nuclear Regulatory Commission issuances  

SciTech Connect

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

NONE

1996-04-01

415

Nuclear arms control  

Microsoft Academic Search

Limited success in arms-control negotiations has left many in the national defense community frustrated and even pessimistic about the viability of nuclear treaties. Particularly frustrated are arms-control specialists who lack a simplified method for developing clear, defensible negotiating positions. The author thought the problems of arms-control negotiation stemmed from two sources: unclear national security policy, and vague methodologies for formulating

1986-01-01

416

Nuclear grade steels  

SciTech Connect

This patent describes a stainless steel suited for use as a component in nuclear installations consisting essentially of, in weight percent, 15 to less than 25 chromium, 5 to 15 nickel, 2.7 to 5.5 silicon, 1 to 3 carbon, niobium plus vanadium 5 to 15, up to 0.15 nitrogen, up to 1.5 cobalt and the balance iron plus impurities wherein niobium is at least 3.77.

Crook, P.; Zordan, R.D.

1987-02-17

417

Nuclear waste management  

Microsoft Academic Search

The status of the following programs is reported: high-level waste immobilization; alternative waste forms; nuclear waste materials characterization; TRU waste immobilization; TRU waste decontamination; krypton solidification; thermal outgassing; iodine-129 fixation; monitoring and physical characterization of unsaturated zone transport; well-logging instrumentation development; mobility of organic complexes of fission products in soils; waste management system studies; waste management safety studies; assessment of

A. M. Platt; J. A. Powell

1980-01-01

418

Rationality in nuclear deterrence  

SciTech Connect

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

Park, J.

1991-01-01

419

Nuclear Tests in India  

NSDL National Science Digital Library

This Week's In the News discusses the recent nuclear tests in India and the world's reaction to those tests. The ten resources discussed offer analysis, commentary, and background information from a variety of perspectives. On May 11, 1998, India confirmed what the world already knew by conducting three underground nuclear tests in the Pokhran Mountain Range in the Rajasthan Province. On May 13 two more sub-kiloton devices were exploded and the government announced that the planned series of tests was complete. Although India has indicated it may now be ready to sign on to the Comprehensive Test Ban Treaty (CTBT), reaction from the world community has been extremely negative. In the vanguard of this chorus of dissaproval has been the US, which announced over $20 billion in economic sanctions against India on May 13. The strongest critic of the tests, however, has been India's neighbor and rival Pakistan, which has fought three wars with India since 1947. Domestic pressure on Pakistani Prime Minister Nawaz Sharif to respond has been enormous and many commentators believe a Pakistani nuclear test is imminent. In India, however, the BJP-dominated government has been widely lauded. Many Indians have expressed pride and dismiss foreign criticism as a hypocritical holdover of colonial mentalities. While US sanctions are unlikely to have any large-scale effect on India, the end results of these tests on Indo-Pakistani relations and their ongoing missile race is yet to be seen.

De Nie, Michael W.

1998-01-01

420

Nuclear and particle astrophysics  

SciTech Connect

We discuss the physics of matter that is relevant to the structure of compact stars. This includes nuclear, neutron star matter and quark matter and phase transitions between them. Many aspects of neutron star structure and its dependance on a number of physical assumptions about nuclear matter properties and hyperon couplings are investigated. We also discuss the prospects for obtaining constraints on the equation of state from astrophysical sources. Neuron star masses although few are known at present, provide a very direct constraint in as much as the connection to the equation of state involves only the assumption that Einstein's general of theory of relativity is correct at the macroscopic scale. Supernovae simulations involve such a plethora of physical processes including those involved in the evolution of the precollapse configuration, not all of them known or understood, that they provide no constraint at the present time. Indeed the prompt explosion, from which a constraint had been thought to follow, is now believed not to be mechanism by which most, if any stars, explode. In any case the nuclear equation of state is but one of a multitude on uncertain factors, and possibly one of the least important. The rapid rotation of pulsars is also discussed. It is shown that for periods below a certain limit it becomes increasingly difficult to reconcile them with neutron stars. Strange stars are possible if strange matter is the absolute ground state. We discuss such stars and their compatibility with observation. 112 refs., 37 figs., 6 tabs.

Glendenning, N.K.

1990-10-31

421

Nuclear Power - Post Fukushima  

NASA Astrophysics Data System (ADS)

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

Reyes, Jose, Jr.

2011-10-01

422

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

423

Theoretical studies in nuclear reactions and nuclear structure  

SciTech Connect

Research in the Maryland Nuclear Theory Group focusses on problems in four basic areas of current relevance. Hadrons in nuclear matter; the structure of hadrons; relativistic nuclear physics and heavy ion dynamics and related processes. The section on hadrons in nuclear matter groups together research items which are aimed at exploring ways in which the properties of nucleons and the mesons which play a role in the nuclear force are modified in the nuclear medium. A very interesting result has been the finding that QCD sum rules supply a new insight into the decrease of the nucleon's mass in the nuclear medium. The quark condensate, which characterizes spontaneous chiral symmetry breaking of the late QCD vacuum, decreases in nuclear matter and this is responsible for the decrease of the nucleon's mass. The section on the structure of hadrons contains progress reports on our research aimed at understanding the structure of the nucleon. Widely different approaches are being studied, e.g., lattice gauge calculations, QCD sum rules, quark-meson models with confinement and other hedgehog models. A major goal of this type of research is to develop appropriate links between nuclear physics and QCD. The section on relativistic nuclear physics represents our continuing interest in developing an appropriate relativistic framework for nuclear dynamics. A Lorentz-invariant description of the nuclear force suggests a similar decrease of the nucleon's mass in the nuclear medium as has been found from QCD sum rules. Work in progress extends previous successes in elastic scattering to inelastic scattering of protons by nuclei. The section on heavy ion dynamics and related processes reports on research into the e{sup +}e{sup {minus}} problem and heavy ion dynamics.

Not Available

1992-05-01

424

Theoretical studies in nuclear reactions and nuclear structure. Progress report  

SciTech Connect

Research in the Maryland Nuclear Theory Group focusses on problems in four basic areas of current relevance. Hadrons in nuclear matter; the structure of hadrons; relativistic nuclear physics and heavy ion dynamics and related processes. The section on hadrons in nuclear matter groups together research items which are aimed at exploring ways in which the properties of nucleons and the mesons which play a role in the nuclear force are modified in the nuclear medium. A very interesting result has been the finding that QCD sum rules supply a new insight into the decrease of the nucleon`s mass in the nuclear medium. The quark condensate, which characterizes spontaneous chiral symmetry breaking of the late QCD vacuum, decreases in nuclear matter and this is responsible for the decrease of the nucleon`s mass. The section on the structure of hadrons contains progress reports on our research aimed at understanding the structure of the nucleon. Widely different approaches are being studied, e.g., lattice gauge calculations, QCD sum rules, quark-meson models with confinement and other hedgehog models. A major goal of this type of research is to develop appropriate links between nuclear physics and QCD. The section on relativistic nuclear physics represents our continuing interest in developing an appropriate relativistic framework for nuclear dynamics. A Lorentz-invariant description of the nuclear force suggests a similar decrease of the nucleon`s mass in the nuclear medium as has been found from QCD sum rules. Work in progress extends previous successes in elastic scattering to inelastic scattering of protons by nuclei. The section on heavy ion dynamics and related processes reports on research into the e{sup +}e{sup {minus}} problem and heavy ion dynamics.

Not Available

1992-05-01

425

Clusters and Superclusters in the Sloan and Las Campanas Surveys  

E-print Network

We generate the 2-dimensional high-resolution density field of galaxies of the Early Data Release of the Sloan Digital Sky Survey and the Las Campanas Redshift Survey with a smoothing length 0.8 Mpc/h to extract clusters and groups of galaxies, and a low-resolution field with a smoothing length 10 Mpc/h to extract superclusters of galaxies. We investigate properties of density field clusters and superclusters and compare the properties of these clusters and superclusters with those of Abell clusters, and superclusters found on the basis of Abell clusters. We found that clusters in a high-density environment have a luminosity a factor of 5 - 10 higher than in a low-density environment. Clusters and superclusters in the Northern slice of SDSS are much richer than those in the Southern slice.

J. Einasto

2004-01-16

426

The state of nuclear forensics  

NASA Astrophysics Data System (ADS)

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

Kristo, Michael J.; Tumey, Scott J.

2013-01-01

427

Climatic Consequences of Nuclear Conflict  

NASA Astrophysics Data System (ADS)

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

Robock, A.

2011-12-01

428

Nuclear symmetry energy at subnormal densities from measured nuclear masses  

E-print Network

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

Min Liu; Ning Wang; Zhuxia Li; Fengshou Zhang

2010-11-17

429

Fresh nuclear fuel measurements at Ukrainian nuclear power plants  

SciTech Connect

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

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

2009-01-01

430

Seismic Wave Amplification in Las Vegas: Site Characterization Measurements and Response Models  

NASA Astrophysics Data System (ADS)

As part of a multidisciplinary effort to understand seismic wave amplification in Las Vegas Valley, we conducted geotechnical and seismic refraction field studies, geologic and lithologic interpretation, and geophysical model building. Frequency-dependent amplifications (site response) and peak ground motions strongly correlate with site conditions as characterized by the models. The models include basin depths and velocities, which also correlate against ground motions. Preliminary geologic models were constructed from detailed geologic and fault mapping, logs of over 500 wells penetrating greater than 200 m depth, gravity-inversion results from the USGS, and USDA soil maps. Valley-wide refraction studies we conducted in 2002 and 2003 were inverted for constraints on basin geometry, and deep basin and basement P velocities with some 3-d control to depths of 5 km. Surface-wave studies during 2002-2004 characterized more than 75 sites within the Valley for shear velocity to depths exceeding 100 m, including all the legacy sites where nuclear-blast ground motions were recorded. The SASW and refraction-microtremor surface-surveying techniques proved to provide complementary, and coordinating Rayleigh dispersion-curve data at a dozen sites. Borehole geotechnical studies at a half-dozen sites confirmed the shear-velocity profiles that we derived from surface-wave studies. We then correlated all the geotechnical data against a detailed stratigraphic model, derived from drilling logs, to create a Valley-wide model for shallow site conditions. This well-log-based model predicts site measurements better than do models based solely on geologic or soil mapping.

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

2004-12-01

431

Hadrons in the Nuclear Medium  

E-print Network

Quantum Chromodynamics, the microscopic theory of strong interactions, has not yet been applied to the calculation of nuclear wave functions. However, it certainly provokes a number of specific questions and suggests the existence of novel phenomena in nuclear physics which are not part of the the traditional framework of the meson-nucleon description of nuclei. Many of these phenomena are related to high nuclear densities and the role of color in nucleonic interactions. Quantum fluctuations in the spatial separation between nucleons may lead to local high density configurations of cold nuclear matter in nuclei, up to four times larger than typical nuclear densities. We argue here that experiments utilizing the higher energies available upon completion of the Jefferson Laboratory energy upgrade will be able to probe the quark-gluon structure of such high density configurations and therefore elucidate the fundamental nature of nuclear matter. We review three key experimental programs: quasi-elastic electro-dis...

Sargsian, M M; Bertozzi, W; Böglin, W; Carlson, C E; Day, D B; Frankfurt, L L; Egiyan, K; Ent, R; Gilad, S; Griffioen, K; Higinbotham, D W; Kuhn, S; Melnitchouk, W; Miller, G A; Piasetzky, E; Stepanyan, S; Strikman, M I; Weinstein, L B

2003-01-01

432

Nuclear receptors in neurodegenerative diseases.  

PubMed

Nuclear receptors have generated substantial interest in the past decade as potential therapeutic targets for the treatment of neurodegenerative disorders. Despite years of effort, effective treatments for progressive neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, Huntington's disease and ALS remain elusive, making non-classical drug targets such as nuclear receptors an attractive alternative. A substantial literature in mouse models of disease and several clinical trials have investigated the role of nuclear receptors in various neurodegenerative disorders, most prominently AD. These studies have met with mixed results, yet the majority of studies in mouse models report positive outcomes. The mechanisms by which nuclear receptor agonists affect disease pathology remain unclear. Deciphering the complex signaling underlying nuclear receptor action in neurodegenerative diseases is essential for understanding this variability in preclinical studies, and for the successful translation of nuclear receptor agonists into clinical therapies. PMID:24874548

Skerrett, Rebecca; Malm, Tarja; Landreth, Gary

2014-12-01

433

LAS homolog distribution shift during wastewater treatment and composting ecological implications  

SciTech Connect

The behavior of LAS (linear alkylbenzene sulfonate) in different environmental compartments was studied through wastewater treatment process steps in sewage treatment plants of Alicante and Benidorm (activated sludge type) as well as in Guardamar (lagoons). The fate of LAS, using a specific HPLC method, was monitored during treatment sludge compostage and soil amendment operations. Finally, the marine sediments close to a submarine wastewater sewer outfall were analyzed. The results show significant differences between distribution of LAS homologs in water and solids (sludges, sediments, and soils), as compared to the original distribution in detergent formulations, yielding a lower LAS average molecular weight in water samples. The change observed in the homolog distribution of LAS implies a reduction in the toxicity to Daphnia, because a lower average molecular weight of LAS is less toxic.

Prats, D.; Ruiz, F.; Vazquez, B.; Zarzo, D. (Univ. of Alicante (Spain). Div. Chemical Engineering); Berna, J.L.; Moreno, A. (Petresa, Madrid (Spain))

1993-09-01

434

Nuclear reactor reflector  

DOEpatents

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

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

1994-06-07

435

Nuclear reactor reflector  

DOEpatents

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

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

1994-01-01

436

Nuclear electric power sources  

NASA Technical Reports Server (NTRS)

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

Singh, J. J.

1978-01-01

437

Nuclear Magnetic Resonance Gyroscope  

NASA Astrophysics Data System (ADS)

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

Larsen, Michael

2011-06-01

438

Nuclear Energy: Radiation Exposure  

NSDL National Science Digital Library

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

Pratte, John

439

Intelligence Estimates of Nuclear Terrorism  

Microsoft Academic Search

Nuclear terrorism is not a post-9\\/11 or even post-cold war phenomenon. In fact, this review of declassified intelligence estimates spanning the past five decades reveals that the prospect of a clandestine nuclear attack on the United States—be it from the Soviet Union, China, or al Qaeda—has been a regular concern for U.S. officials since the advent of nuclear weapons. Although

Micah Zenko

2006-01-01

440

Psychological aspects of nuclear war  

SciTech Connect

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

Thompson, J.

1985-01-01

441

Swelling-resistant nuclear fuel  

DOEpatents

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

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

2011-12-27

442

Sustainable futures using nuclear energy  

Microsoft Academic Search

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

Romney B. Duffey

2005-01-01

443

Ethics and nuclear weapons research  

SciTech Connect

Nuclear weapons are the ultimate weapons. Hence, many believe that in the realm of military research and development, research on nuclear weapons represents the ultimate. Those of us involved in nuclear weapon research are frequently asked why we do what we do, rather than get involved in the more ''peaceful'' endeavors open to scientists and engineers. There is a variety of answers to this question. 15 refs.

Brown, P.S.

1989-01-20

444

Open Mitosis: Nuclear Envelope Dynamics  

Microsoft Academic Search

The nuclear envelope separating the cell nucleus from the cytoplasm is a common feature of all\\u000a eukaryotic cells, but its origin is still an enigma. Its early evolution appears closely linked with the\\u000a evolution of the mitotic spindle apparatus. Many regulatory proteins are playing critical dual roles in\\u000a spindle assembly as well as nuclear envelope and nuclear pore complex formation. During

Annkatrin Rose

445

Nuclear energy: a sensible alternative  

Microsoft Academic Search

This book presents in-depth articles on the main issues affecting the use and usefulness of nuclear energy for peaceful domestic purposes. Topics considered include energy futures (a world study), energy demand-energy supplies, an energy-deficient society, energy shortages, the economics of light water reactors (LWRs), fast breeder reactor economics, international cooperation in the nuclear field, nuclear recycling (costs, savings, safeguards), alternative

K. O. Ott; B. I. Spinrad

1985-01-01

446

Nuclear energy: a sensible alternative  

Microsoft Academic Search

This book presents information on energy futures; energy demand, energy supplies; exclusive paths and difficult choices--hard, soft, and moderate energy paths; an energy-deficient society; energy shortages; economics of light-water reactors; fast breeder reactor economics; international cooperation in the nuclear field; nuclear recycling; alternative fuels, fuel cycles, and reactors; the nuclear weapons proliferation issue; paths to a world with more reliable

K. O. Ott; B. I. Spinrad

1985-01-01

447

Effect of linear alkylbenzene sulphonates (LAS) on the anaerobic digestion of sewage sludge  

Microsoft Academic Search

Batch anaerobic biodegradation tests with different alkylbenzene sulphonates (LAS) at increasing concentrations were performed in order to investigate the effect of LAS homologues on the anaerobic digestion process of sewage sludge. Addition of LAS homologues to the anaerobic digesters increased the biogas production at surfactant concentrations ?5–10g\\/kg dry sludge and gave rise to a partial or total inhibition of the

M. T. Garcia; E. Campos; J. Sánchez-Leal; I. Ribosa

2006-01-01

448

Contribución al flujo infrarrojo de las estrellas Be de la recombinación dielectrónica del MgII  

NASA Astrophysics Data System (ADS)

Para evaluar la contribución del proceso de recombinación dielectrónica del átomo de MgII al exceso de flujo infrarrojo observado en las estrellas Be, calculamos la energía emitida en las líneas originadas por este proceso. Se evaluaron los efectos de las condiciones físicas del medio, como la temperatura electrónica y la densidad electrónica, sobre el flujo emitido. Se consideró también la influencia de una posible opacidad.

Cruzado, A.; di Rocco, H.; Ringuelet, A.

449

City of Las Vegas Plug-in Hybrid Electric Vehicle Demonstration Program  

SciTech Connect

The City of Las Vegas was awarded Department of Energy (DOE) project funding in 2009, for the City of Las Vegas Plug-in Hybrid Electric Vehicle Demonstration Program. This project allowed the City of Las Vegas to purchase electric and plug-in hybrid electric vehicles and associated electric vehicle charging infrastructure. The City anticipated the electric vehicles having lower overall operating costs and emissions similar to traditional and hybrid vehicles.

None

2013-12-31

450

Nuclear Structure at the Limits  

SciTech Connect

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

Nazarewicz, Witold

1997-12-31

451

Nuclear World Order and Nonproliferation  

SciTech Connect

The decision by India and Pakistan in May 1998 to conduct nuclear weapon tests and declare themselves as nuclear weapon states challenged South Asian regional stability calculations, US nonproliferation policy, and prevailing assumptions about international security. A decade later, the effects of those tests are still being felt and policies are still adjusting to the changed global conditions. This paper will consider non- and counter-proliferation policy options for the United States and Pakistan as they work as partners to prevent the transfer of nuclear technology and further nuclear proliferation.

Joeck, N

2007-02-05

452

Environmental Hazards of Nuclear Wastes  

ERIC Educational Resources Information Center

Present methods for storage of radioactive wastes produced at nuclear power facilities are described. Problems arising from present waste management are discussed and potential solutions explored. (JP)

Micklin, Philip P.

1974-01-01

453

Nuclear Physics of Neutron Stars  

E-print Network

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

J. Piekarewicz

2009-01-28

454

La Transpiración - Movimiento del Agua a Través de las Plantas  

NSDL National Science Digital Library

La transpiración es la pérdida de agua en forma de vapor por las plantas. El agua es absorbida del suelo por las raíces y transportada en forma líquida por el xilema hacia las hojas. En las hojas, unos pequeños poros permiten que el agua (H2O) escape a la atmósfera en forma de vapor, al tiempo que se permite la entrada de bióxido de carbono (CO2) para la fotosíntesis. De toda el agua absorbida por las plantas, menos del 5% es retenida y utilizada para crecimiento y almacenamiento. En esta lección se explicará porque las plantas pierden tanta agua, la ruta que ésta sigue dentro de la planta, como pudieran las plantas controlar la pérdida excesiva de agua y como las condiciones ambientales influyen en la pérdida de agua por las plantas.

455

Stationary Phase-Specific Virulence Factor Overproduction by a lasR Mutant of Pseudomonas aeruginosa  

PubMed Central

Secreted virulence factors of the human pathogen Pseudomonas aeruginosa are often under quorum sensing control. Cells lacking the quorum-sensing regulator LasR show reduced virulence factor production under typical laboratory conditions and are hypo-virulent in short-term animal infection models, yet lasR mutants are frequently associated with long-term infection in cystic fibrosis patients. Here, I show that in stationary-phase or slow-growth conditions, lasR cells continuously and strongly produce the important virulence factor pyocyanin while wild-type cells do not. Pyocyanin overproduction by lasR cells is permitted by loss of repression by RsaL, a LasR-dependent negative regulator. lasR cells also contribute pyocyanin in mixed cultures, even under “cheating” conditions where they depend on their wild-type neighbors for nutrients. Finally, some clinical P. aeruginosa isolates with lasR mutations can overproduce pyocyanin in the laboratory. These results imply that slow-growing clinical populations of lasR cells in chronic infections may contribute to virulence by producing pyocyanin under conditions where lasR+ cells do not. PMID:24533146

Cabeen, Matthew T.

2014-01-01

456

Nuclear reactor control column  

DOEpatents

The nuclear reactor control column comprises a column disposed within the nuclear reactor core having a variable cross-section hollow channel and containing balls whose vertical location is determined by the flow of the reactor coolant through the column. The control column is divided into three basic sections wherein each of the sections has a different cross-sectional area. The uppermost section of the control column has the greatest cross-sectional area, the intermediate section of the control column has the smallest cross-sectional area, and the lowermost section of the control column has the intermediate cross-sectional area. In this manner, the area of the uppermost section can be established such that when the reactor coolant is flowing under normal conditions therethrough, the absorber balls will be lifted and suspended in a fluidized bed manner in the upper section. However, when the reactor coolant flow falls below a predetermined value, the absorber balls will fall through the intermediate section and into the lowermost section, thereby reducing the reactivity of the reactor core and shutting down the reactor.

Bachovchin, Dennis M. (Plum Borough, PA)

1982-01-01

457

A nuclear Weyl algebra  

NASA Astrophysics Data System (ADS)

A bilinear form on a possibly graded vector space V defines a graded Poisson structure on its graded symmetric algebra together with a star product quantizing it. This gives a model for the Weyl algebra in an algebraic framework, only requiring a field of characteristic zero. When passing to R or C one wants to add more: the convergence of the star product should be controlled for a large completion of the symmetric algebra. Assuming that the underlying vector space carries a locally convex topology and the bilinear form is continuous, we establish a locally convex topology on the Weyl algebra such that the star product becomes continuous. We show that the completion contains many interesting functions like exponentials. The star product is shown to converge absolutely and provides an entire deformation. We show that the completion has an absolute Schauder basis whenever V has an absolute Schauder basis. Moreover, the Weyl algebra is nuclear iff V is nuclear. We discuss functoriality, translational symmetries, and equivalences of the construction. As an example, we show how the Peierls bracket in classical field theory on a globally hyperbolic spacetime can be used to obtain a local net of Weyl algebras.

Waldmann, Stefan

2014-07-01

458

Multinational underground nuclear parks  

SciTech Connect

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

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

2013-07-01

459

Nuclear reactor sealing system  

DOEpatents

A liquid metal-cooled nuclear reactor sealing system. The nuclear reactor includes a vessel sealed at its upper end by a closure head. The closure head comprises at least two components, one of which is rotatable; and the two components define an annulus therebetween. The sealing system includes at least a first and second inflatable seal disposed in series in an upper portion of the annulus. The system further includes a dip seal extending into a body of insulation located adjacent a bottom portion of the closure head. The dip seal comprises a trough formed by a lower portion of one of the components, and a seal blade pendently supported from the other component and extending downwardly into the trough. A body of liquid metal is contained in the trough which submerges a portion of the seal blade. The seal blade is provided with at least one aperture located above the body of liquid metal for providing fluid communication between the annulus intermediate the dip seal and the inflatable seals, and a body of cover gas located inside the vessel. There also is provided means for introducing a purge gas into the annulus intermediate the inflatable seals and the seal blade. The purge gas is introduced in an amount sufficient to substantially reduce diffusion of radioactive cover gas or sodium vapor up to the inflatable seals. The purge gas mixes with the cover gas in the reactor vessel where it can be withdrawn from the vessel for treatment and recycle to the vessel.

McEdwards, James A. (Calabasas, CA)

1983-01-01

460

Nuclear effects hardened shelters  

NASA Astrophysics Data System (ADS)

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

Lindke, Paul

1990-11-01

461

nuclear magnetic resonance gyroscope  

SciTech Connect

A nuclear magnetic resonance gyroscope which derives angular rotation thereof from the phases of precessing nuclear moments utilizes a single-resonance cell situated in the center of a uniform DC magnetic field. The field is generated by current flow through a circular array of coils between parallel plates. It also utilizes a pump and read-out beam and associated electronics for signal processing and control. Encapsulated in the cell for sensing rotation are odd isotopes of Mercury Hg/sup 199/ and Hg/sup 201/. Unpolarized intensity modulated light from a pump lamp is directed by lenses to a linear polarizer, quarter wave plate combination producing circularly polarized light. The circularly polarized light is reflected by a mirror to the cell transverse to the field for optical pumping of the isotopes. Unpolarized light from a readout lamp is directed by lenses to another linear polarizer. The linearly polarized light is reflected by another mirror to the cell transverse to the field and orthogonal to the pump lamp light. The linear light after transversing the cell strikes an analyzer where it is converted to an intensity-modulated light. The modulated light is detected by a photodiode processed and utilized as feedback to control the field and pump lamp excitation and readout of angular displacement.

Karwacki, F. A.; Griffin, J.

1985-04-02

462

Nuclear physics and cosmology  

NASA Technical Reports Server (NTRS)

Nuclear physics has provided one of two critical observational tests of all Big Bang cosmology, namely Big Bang Nucleosynthesis. Furthermore, this same nuclear physics input enables a prediction to be made about one of the most fundamental physics questions of all, the number of elementary particle families. The standard Big Bang Nucleosynthesis arguments are reviewed. The primordial He abundance is inferred from He-C and He-N and He-O correlations. The strengthened Li constraint as well as D-2 plus He-3 are used to limit the baryon density. This limit is the key argument behind the need for non-baryonic dark matter. The allowed number of neutrino families, N(nu), is delineated using the new neutron lifetime value of tau(n) = 890 + or - 4s (tau(1/2) = 10.3 min). The formal statistical result is N(nu) = 2.6 + or - 0.3 (1 sigma), providing a reasonable fit (1.3 sigma) to three families but making a fourth light (m(nu) less than or equal to 10 MeV) neutrino family exceedly unlikely (approx. greater than 4.7 sigma). It is also shown that uncertainties induced by postulating a first-order quark-baryon phase transition do not seriously affect the conclusions.

Schramm, David N.

1989-01-01

463

The Nuclear Astrophysics Explorer  

NASA Technical Reports Server (NTRS)

The Nuclear Astrophysics Explorer was proposed in 1986 for NASA's Explorer Concept Study Program by an international collaboration of 25 scientists from nine institutions. The one-year feasibility study began in June 1988. The Nuclear Astrophysics Explorer would obtain high resolution observations of gamma-ray lines, E/Delta E about 1000, at a sensitivity of about 0.000003 ph/sq cm s, in order to study fundamental problems in astrophysics such as nucleosynthesis, supernovae, neutron star and black-hole physics, and particle acceleration and interactions. The instrument would operate from 15 keV to 10 Mev and use a heavily shielded array of nine cooled Ge spectrometers in a very low background configuration. Its 10 deg FWHM field of view would contain a versatile coded mask system which would provide two-dimensional imaging with 4 deg resolution, one-dimensional imaging with 2 deg resolution, and efficiendt measurements of diffuse emission. An unshielded Ge spectrometer would obtain wide-field measurements of transient gamma-ray sources. The earliest possible mission would begin in 1995.

Matteson, J. L.; Teegarden, B. J.; Gehrels, N.; Mahoney, W. A.

1989-01-01

464

Nuclear chemistry progress report  

SciTech Connect

This is the annual progress report for the Indiana University nuclear chemistry program for the 1992/1993 year. Accomplishments include the construction, testing, and initial experimental runs of the Indiana Silicon Sphere (ISiS) 4{pi} charged particle detector. ISiS is designed to study energy dissipation and multifragmentation phenomena in light-ion-induced nuclear reactions at medium-to-high energies. Its second test run was to examine 3.6 GeV {sup 3}He beam reactions at Laboratoire National Saturne (LNS) in Saclay. The development and deployment of this system has occupied a great deal of the groups effort this reporting period. Additional work includes: calculations of isotopic IMF yields in the {sup 4}He + {sup 116,124}Sn reaction; cross sections for A = 6 - 30 fragments from the {sup 4}He + {sup 28}Si reaction at 117 and 198 MeV; charging effects of passivated silicon detectors; neck emission of intermediate-mass fragments in the fission of hot heavy nuclei.

Viola, V.E.; Kwiatkowski, K.

1993-08-01

465

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

ERIC Educational Resources Information Center

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

Hollander, Jack, Ed.

466

Nuclear proliferation today: The spread of nuclear weapons  

SciTech Connect

Announced as the first of a series of annual reports on the spread of nuclear weapons, this endeavor of the Carnegie Endowment for International Peace may stimulate increased public awareness of this critical topic. A good part of the book contains the historical setting of the nuclear issue in the eight most likely proliferators.

Spector, L.S.

1984-01-01

467

Nuclear winter: implications for US and Soviet nuclear strategy  

SciTech Connect

In November 1983 Dr. Carl Sagan and his colleagues reported to press on the results of their study of the atmospheric consequences of nuclear war. The TTAPS study found that for a wide range of possible U.S. -Soviet nuclear exchanges, including relatively small ones, the fires from nuclear detonations would inject into the stratosphere quantities of dust and soot that would obscure sunlight for months. Under the cloud, which would spread over most of the Northern Hemisphere, temperatures might drop scores of degrees, well below the freezing point of water; thus, nuclear winter. The TTAPS team's findings suggested that the consequences of a nuclear war might be even more gruesome than previously supposed, and the long-term climatic and biological results might be nearly as severe for a war of 100 megatons as for 5,000. From the point of view of informing policymakers and the public concerning the consequences of wars involving nuclear weapons, the politicization of the nuclear winter issue is unfortunate. We can hope that in the next few years the criticism and defense of the initial TTAPS work will give rise to significant additional analyses, to illuminate the question. Realistically, further study will probably include both confirmations and contradictions of the original findings, without necessarily resolving the issue. Sadly, the surrounding political atmosphere may obstruct sober consideration of the policy implications of the possibility of nuclear winter.

Romero, P.J.

1984-12-01

468

Nuclear phenomena in low-energy nuclear reaction research.  

PubMed

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

Krivit, Steven B

2013-09-01

469

Preparing Non-nuclear Engineers for the Nuclear Field  

E-print Network

. An understanding of power generation is important for all modern-day engineers, and nuclear energy serves as a good. Acting as a "grabber," nuclear power generation will be employed as the model application States of America should certainly contribute to energy technological education and development

Ervin, Elizabeth K.

470

The Nuclear War Age Barrier within the Nuclear Family.  

ERIC Educational Resources Information Center

This document notes that the literature addressing children's nuclear fears suggests that children are introduced to the nuclear threat by ways that do not provide dialogue and without regard to the age appropriate needs of the child, and that parents seem to be protecting their children from the horror of a holocaust by not talking about the…

McConnell, Stephen C.; And Others

471

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

E-print Network

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

Escolano, Francisco

472

MIT Nuclear Space Research Andrew C. Kadak  

E-print Network

SELENE MIT Nuclear Space Research Andrew C. Kadak Professor of the Practice Nuclear Science with Nuclear Energy ­ Selene - Sodium-Cooled Epithermal Long-term Exploration Nuclear Engine (MS thesis) ­ The Martian Surface Reactor: An Advanced Nuclear Power Station for Manned Extraterrestrial Exploration

473

Nuclear Reactions & Scaling Arguments 11 October 2011  

E-print Network

Nuclear Reactions & Scaling Arguments 11 October 2011 Goals · Review nuclear reaction rates · Practice using scaling arguments Nuclear Reactions 1. Consider the simple reaction A k1 ---- B k2 ---- C = 3. #12;nuclear reactions & scaling arguments 2 3. Frequently, we approximate nuclear reaction rates

Militzer, Burkhard

474

Nuclear Engineering Student Learning Outcome Assessment Report  

E-print Network

1 Nuclear Engineering Student Learning Outcome Assessment Report 1. Program mission The Nuclear and graduate education to tomorrow's leaders in nuclear engineering. The program provides well-educated nuclear engineering professionals and leaders to Missouri and the nation in the commercial nuclear industry, national

Missouri-Rolla, University of

475

Nuclear Power Trends Energy Economics and Sustainability  

E-print Network

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

476

The Nuclear Age: Context for Family Interaction.  

ERIC Educational Resources Information Center

Suggests that concerns regarding the nuclear threat are prevalent among family members; parents and children feel powerless in response to the nuclear threat; response to the nuclear threat is a family issue; responding to the nuclear threat requires empowering families and changing the social context; and nuclear concerns need to be addressed in…

Ptacek, Carmen

1988-01-01

477

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

NASA Technical Reports Server (NTRS)

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

1979-01-01

478

76 FR 17162 - Entergy Nuclear Operations, Inc.; Vermont Yankee Nuclear Power Station; Notice of Issuance of...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Entergy Nuclear Operations, Inc.; Vermont Yankee Nuclear Power Station; Notice...License No. DPR-28 to Entergy Nuclear Vermont Yankee, LLC (Entergy VY), and Entergy...licensee), the operator of the Vermont Yankee Nuclear Power Station...

2011-03-28

479

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

Federal Register 2010, 2011, 2012, 2013, 2014

...Nuclear Operations, Inc., James A. Fitzpatrick Nuclear Power Plant, Vermont Yankee...take action with regard to James A. Fitzpatrick Nuclear Power Plant, Vermont Yankee...take action with regard to James A. Fitzpatrick Nuclear Power Plant...

2013-08-19

480

Nuclear Data Needs for Generation IV Nuclear Energy Systems  

NASA Astrophysics Data System (ADS)

Nuclear data needs for generation IV systems. Future of nuclear energy and the role of nuclear data / P. Finck. Nuclear data needs for generation IV nuclear energy systems-summary of U.S. workshop / T. A. Taiwo, H. S. Khalil. Nuclear data needs for the assessment of gen. IV systems / G. Rimpault. Nuclear data needs for generation IV-lessons from benchmarks / S. C. van der Marck, A. Hogenbirk, M. C. Duijvestijn. Core design issues of the supercritical water fast reactor / M. Mori ... [et al.]. GFR core neutronics studies at CEA / J. C. Bosq ... [et al]. Comparative study on different phonon frequency spectra of graphite in GCR / Young-Sik Cho ... [et al.]. Innovative fuel types for minor actinides transmutation / D. Haas, A. Fernandez, J. Somers. The importance of nuclear data in modeling and designing generation IV fast reactors / K. D. Weaver. The GIF and Mexico-"everything is possible" / C. Arrenondo Sánchez -- Benmarks, sensitivity calculations, uncertainties. Sensitivity of advanced reactor and fuel cycle performance parameters to nuclear data uncertainties / G. Aliberti ... [et al.]. Sensitivity and uncertainty study for thermal molten salt reactors / A. Biduad ... [et al.]. Integral reactor physics benchmarks- The International Criticality Safety Benchmark Evaluation Project (ICSBEP) and the International Reactor Physics Experiment Evaluation Project (IRPHEP) / J. B. Briggs, D. W. Nigg, E. Sartori. Computer model of an error propagation through micro-campaign of fast neutron gas cooled nuclear reactor / E. Ivanov. Combining differential and integral experiments on [symbol] for reducing uncertainties in nuclear data applications / T. Kawano ... [et al.]. Sensitivity of activation cross sections of the Hafnium, Tanatalum and Tungsten stable isotopes to nuclear reaction mechanisms / V. Avrigeanu ... [et al.]. Generating covariance data with nuclear models / A. J. Koning. Sensitivity of Candu-SCWR reactors physics calculations to nuclear data files / K. S. Kozier, G. R. Dyck. The lead cooled fast reactor benchmark BREST-300: analysis with sensitivity method / V. Smirnov ... [et al.]. Sensitivity analysis of neutron cross-sections considered for design and safety studies of LFR and SFR generation IV systems / K. Tucek, J. Carlsson, H. Wider -- Experiments. INL capabilities for nuclear data measurements using the Argonne intense pulsed neutron source facility / J. D. Cole ... [et al.]. Cross-section measurements in the fast neutron energy range / A. Plompen. Recent measurements of neutron capture cross sections for minor actinides by a JNC and Kyoto University Group / H. Harada ... [et al.]. Determination of minor actinides fission cross sections by means of transfer reactions / M. Aiche ... [et al.] -- Evaluated data libraries. Nuclear data services from the NEA / H. Henriksson, Y. Rugama. Nuclear databases for energy applications: an IAEA perspective / R. Capote Noy, A. L. Nichols, A. Trkov. Nuclear data evaluation for generation IV / G. Noguère ... [et al.]. Improved evaluations of neutron-induced reactions on americium isotopes / P. Talou ... [et al.]. Using improved ENDF-based nuclear data for candu reactor calculations / J. Prodea. A comparative study on the graphite-moderated reactors using different evaluated nuclear data / Do Heon Kim ... [et al.].

Rullhusen, Peter

2006-04-01

481

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

E-print Network

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

Escolano, Francisco

482

Fronteras del saber cientfico: reflexin epistemolgica sobre las investigaciones fundamentales y praxeolgicas en las ciencias de la educacin en torno al trabajo  

E-print Network

praxeológicas en las ciencias de la educación en torno al trabajo docente1 Javier NUNEZ MOSCOSO Doctorando en Ciencias de la Educación2 UMR ­ EFTS (Education, Formation, Travail, Savoirs) Université de Toulouse II le de Chile, Facultad de Educación Correspondencia: javier.nunez.m@gmail.com Resumen Las ciencias de la

Paris-Sud XI, Université de

483

Leading twist nuclear shadowing, nuclear generalized parton distributions and nuclear DVCS at small x  

E-print Network

We generalize the leading twist theory of nuclear shadowing and calculate quark and gluon generalized parton distributions (GPDs) of spinless nuclei. We predict very large nuclear shadowing for nuclear GPDs. In the limit of the purely transverse momentum transfer, our nuclear GPDs become impact-parameter-dependent nuclear parton distributions (PDFs). Nuclear shadowing induces nontrivial correlations between the impact parameter b and the light-cone fraction x. We make predictions for the deeply virtual Compton scattering (DVCS) amplitude and the DVCS cross section on Pb-208 at high energies. We calculate the cross section of the Bethe-Heitler (BH) process and address the issue of the extraction of the DVCS signal from the e A \\to e \\gamma A cross section. We find that the e A \\to e \\gamma A differential cross section is dominated by DVCS at the momentum transfer t near the minima of the nuclear form factor. We also find that nuclear shadowing leads to dramatic oscillations of the DVCS beam-spin asymmetry, A_{LU}, as a function of t. The position of the points where A_{LU} changes sign is directly related to the magnitude of nuclear shadowing.

K. Goeke; V. Guzey; M. Siddikov

2009-05-05

484

Optimization of linear alkylbenzene sulfonate (LAS) degradation in UASB reactors by varying bioavailability of LAS, hydraulic retention time and specific organic load rate.  

PubMed

Degradation of linear alkylbenzene sulfonate (LAS) in UASB reactors was optimized by varying the bioavailability of LAS based on the concentration of biomass in the system (1.3-16 g TS/L), the hydraulic retention time (HRT), which was operated at 6, 35 or 80 h, and the concentration of co-substrates as specific organic loading rates (SOLR) ranging from 0.03-0.18 g COD/g TVS.d. The highest degradation rate of LAS (76%) was related to the lowest SOLR (0.03 g COD/g TVS.d). Variation of the HRT between 6 and 80 h resulted in degradation rates of LAS ranging from 18% to 55%. Variation in the bioavailability of LAS resulted in discrete changes in the degradation rates (ranging from 37-53%). According to the DGGE profiles, the archaeal communities exhibited greater changes than the bacterial communities, especially in biomass samples that were obtained from the phase separator. The parameters that exhibited more influence on LAS degradation were the SOLR followed by the HRT. PMID:23196232

Okada, Dagoberto Y; Delforno, Tiago P; Esteves, Andressa S; Sakamoto, Isabel K; Duarte, Iolanda C S; Varesche, Maria B A

2013-01-01

485

Surveys, Temporal Variability, and the Las Cumbres Observatory Global Telescope  

NASA Astrophysics Data System (ADS)

Upcoming wide-field surveys such as Pan-STARRS, LSST, and Skymapper will detect large numbers of objects that vary photometrically, or that move. These objects will include small bodies in the solar systema, eclipsing binary stars, transiting extrasolar planets, pulsating stars, dwarf novae, novae, supernovae, active galactic nuclei, and quite possibly other transient phenomena for which we have no names as yet. Although they will be a fertile source of such transient detections, wide-field surveys themselves ordinarily will have neither the observing cadence nor the (e.g., spectroscopic) observing capabilities to perform adequate follow-up observations of these variable objects. The Las Cumbres Observatory Global Telescope (LCOGT) will be a global network of moderate-aperture (2m and smaller) telescopes, instrumented and interconnected so as to facilitate such in-depth variability studies. The LCOGT now operates the two 2m Faulkes Telescopes: FT North located on the island of Maui, and FT South at the Siding Spring site in Australia. These telescopes will anchor a network of about 7 clusters of 1m-class telescopes, each cluster containing 4 telescopes. First-light instruments will provide visible-light and NIR imaging; spectroscopic capabilities will come later, and will likely include both low- and high-resolution visible-light spectrographs. Scheduling and coordination of observations will be provided from a central site, in pursuit of a single set of scientific goals.

Brown, Tim; Rosing, W. E.; Baliber, N.; Hidas, M.; Street, R.

2007-05-01

486

Assembly Bias of Dark Matter Halos in LasDamas  

NASA Astrophysics Data System (ADS)

Assembly bias of dark matter halos refers to the phenomenon in which the clustering of dark matter halos of a fixed mass depends significantly on a second property, in particular: age, concentration or spin. This discovery suggests a challenge for halo occupation distribution and other models that connect galaxy properties solely to halo mass. To investigate assembly bias we use the Large Suite of Dark Matter Simulations (LasDamas) to calculate the large-scale clustering of distinct halos as a function of a variety of properties including mass. We first investigate whether some property other than mass is better able to single-handedly predict clustering, i.e., eliminate the need for a second parameter, but we find no such property. Noting that for many halos the current mass is significantly lower than the peak mass it attained over its history, we revisit assembly bias using only halos that have maintained a significant fraction of their peak mass. We find that the dependence of clustering on a second halo parameter is significantly reduced without the inclusion of these high mass-loss halos. This strongly suggests that part of the theoretical explanation for assembly bias may be that a large fraction of halos do not continually grow in mass, as assumed in spherical collapse models, but instead lose significant amounts of their mass at later times due to interactions with other halos.

Salcedo, Andres Nicolas; Berlind, Andreas A.; Maller, Ariyeh; Sinha, Manodeep

2015-01-01

487

Nuclear Diagnostics of ICF  

SciTech Connect

In inertial confinement fusion (ICF), a high temperature and high density plasma is produced by the spherical implosion of a small capsule. A spherical target capsule is irradiated uniformly by a laser beam (direct irradiation) or x-rays from a high Z enclosure (hohlraum) that is irradiated by laser or ion beams (indirect irradiation). Then high-pressure ablation of the surface causes the fuel to be accelerated inward. Thermonuclear fusion reactions begin in the center region of the capsule as it is heated to sufficient temperature (10 keV) by the converging shocks (hot spot formation). During the stagnation of the imploded shell, the fuel in the shell region is compressed to high density ({approx} 10{sup 3} times solid density in fuel region). When these conditions are established, energy released by the initial nuclear reactions in center ''hot-spot'' region can heat up the cold ''fuel'' region and cause ignition. They are developing advanced nuclear diagnostics for imploding plasmas of the ignition campaign on the National Ignition Facility (NIF). The NIF is a 1.8MJ, 192-beam glass laser system that is under construction at Lawrence Livermore National Laboratory. One objective of the NIF is to demonstrate ignition and gain in an inertial confinement fusion plasma. Extreme physical conditions characterize the imploded plasmas on the NIF. First, the thickness of the plasma, expressed by areal density (plasma density times radius), is large, up to {approx} 1 g/cm{sup 2}. Highly penetrating probes such as energetic neutrons, hard x-rays, or {gamma} rays are required to see deep inside the plasma. Second, the implosion time is quite short. The implosion process takes {approx} 20 ns and the duration of the fusion reaction is on the order of 100 picoseconds. To observe the time history of the nuclear reactions, time resolution better than 10 ps is required. Third, the size of the imploded plasma is quite small ({approx} 100 {micro}m). To see the shape of burning region, a spatial resolution of {approx} 5 {micro}m is required for imaging systems. Fourth, the diagnostics operate in a harsh background. In implosion experiments, strong bursts of electromagnetic pulses, x-rays, neutrons, and neutron-induced radioactivity are produced. Therefore the diagnostics have to be designed to survive in these backgrounds. In addition, to prevent materials ablated from diagnostic components close to the target from being deposited on the laser optics, these components are excluded from a zone around the target with a radius in the range of 0.5 m to 5 m. This exclusion zone has a large impact on diagnostic design.

Izumi, N; Ierche, R A; Moran, M J; Phillips, T W; Sangster, T C; Schmid, G J; Stoyer, M A; Disdier, L; Bourgade, J L; Rouyer, A; Fisher, R K; Gerggren, R R; Caldwen, S E; Faulkner, J R; Mack, J M; Oertel, J A; Young, C S; Glebov, V Y; Jaanimagi, P A; Meyerhofer, D D; Soures, J M; Stockel, C; Frenje, J A; Li, C K; Petrasso, R D

2001-10-18

488

Health Risks of Nuclear Power.  

ERIC Educational Resources Information Center

Deals with the wastes generated in nuclear power plants and the health risks involved as compared to those of wastes generated by coal-fired plants. Concludes that the risks of nuclear power plants are many times smaller than the risks from alternative energy resources. (GA)

Cohen, Bernard L.

1978-01-01

489

Video imaging for Nuclear Safeguards  

SciTech Connect

The field of Nuclear Safeguards has received increasing amounts of public attention since the events of the Iraq-UN conflict over Kuwait, the dismantlement of the former Soviet Union, and more recently, the North Korean resistance to nuclear facility inspections by the International Atomic Energy Agency (IAEA). The role of nuclear safeguards in these and other events relating to the world`s nuclear material inventory is to assure safekeeping of these materials and to verify the inventory and usage of these materials as reported by states that have signed the Nuclear Nonproliferation Treaty. Nuclear Safeguards are measures prescribed by domestic and international regulatory bodies and implemented by the nuclear facility or the regulatory body. These measures include destructive and nondestructive analysis of product materials and process by-products for materials control and accountancy purposes, physical protection for domestic safeguards, and containment and surveillance for international safeguards. In this presentation we will introduce digital video image processing and analysis systems that have been developed at Los Alamos National Laboratory for application to the nuclear safeguards problem. Of specific interest to this audience is the detector-activated predictive wavelet transform image coding used to reduce drastically the data storage requirements for these unattended, remote safeguards systems.

Bradley, J.N.; Brislawn, C.M.; Brown, J.E.; Rodriguez, C.A.; Stoltz, L.A.

1994-04-01

490

Selected topics in nuclear astrophysics  

SciTech Connect

In this lectures after a brief introduction to stellar reaction rates and its implementation in nuclear networks, I discuss the nuclear physics aspects of core collapse supernova and explosive nucleosynthesis and their significance for the production of heavy elements by the rapid neutron capture process and potentially also by the recently discovered {nu}p process.

Martinez-Pinedo, Gabriel [Institut fuer Kernphysik (Theoriezentrum), Technische Universitaet Darmstadt, Schlossgartenstrasse 2, 64289 Darmstadt, Germany and GSI Helmholtzzentrum fuer Schwerioneneforschung, Planckstrasse 1, 64291 Darmstadt (Germany)

2013-06-10

491

Hadrons in the Nuclear Medium  

E-print Network

Quantum Chromodynamics, the microscopic theory of strong interactions, has not yet been applied to the calculation of nuclear wave functions. However, it certainly provokes a number of specific questions and suggests the existence of novel phenomena in nuclear physics which are not part of the the traditional framework of the meson-nucleon description of nuclei. Many of these phenomena are related to high nuclear densities and the role of color in nucleonic interactions. Quantum fluctuations in the spatial separation between nucleons may lead to local high density configurations of cold nuclear matter in nuclei, up to four times larger than typical nuclear densities. We argue here that experiments utilizing the higher energies available upon completion of the Jefferson Laboratory energy upgrade will be able to probe the quark-gluon structure of such high density configurations and therefore elucidate the fundamental nature of nuclear matter. We review three key experimental programs: quasi-elastic electro-disintegration of light nuclei, deep inelastic scattering from nuclei at $x>1$, and the measurement of tagged structure functions. These interrelated programs are all aimed at the exploration of the quark structure of high density nuclear configurations. The study of the QCD dynamics of elementary hard processes is another important research direction and nuclei provide a unique avenue to explore these dynamics. We argue that the use of nuclear targets and large values of momentum transfer at would allow us to determine whether the physics of the nucleon form factors is dominated by spatially small configurations of three quarks.

M. M. Sargsian; J. Arrington; W. Bertozzi; W. Boeglin; C. E. Carlson; D. B. Day; L. L. Frankfurt; K. Egiyan; R. Ent; S. Gilad; K. Griffioen; D. W. Higinbotham; S. Kuhn; W. Melnitchouk; G. A. Miller; E. Piasetzky; S. Stepanyan; M. I. Strikman; L. B. Weinstein

2002-10-08

492

The future of nuclear deterrence  

SciTech Connect

Nuclear deterrence has been in existence for almost four decades. Yet, analysts from the left and the right keep reemphasizing the dangers and problems with deterrence without always remembering its purpose-the prevention of nuclear war or the prevention of all war. In this book. George Quester analyzes the future of nuclear deterrence in light of its past, and discovers that the fundamental tenets of nuclear deterrence remain unchanged. George Quester considers the overwhelming tensions present in a society threatened by the prospect of a nuclear holocaust and a lingering nuclear winter. But he also acknowledges that nuclear deterrence has prevented a great deal of global and local warfare that otherwise would have occurred. He spotlights the basic military problems facing the world today, including the shadow cast on all levels of strategic planning by the threat of nuclear war. Quester warns against charging forth with radical new alternatives, such as the Strategic Defense Initiative and deep-cut disarmament. He argues that initiatives such as these reflect a return to traditional military thinking about waging and winning wars that pose serious possibilities for a breakdown in deterrence policy.

Quester, G.H.

1986-01-01

493

Teaching in a Nuclear Age.  

ERIC Educational Resources Information Center

The study of the nuclear weapons culture and of disarmament must be made central to the curriculum in the humanities, the sciences, and other subject areas. After discussing the contradictions of the nuclear age, the author suggests using consciousness-raising techniques, readings, films, and student research projects as means of reaching…

Musil, Robert K.

1982-01-01

494

Another Side to Nuclear Education.  

ERIC Educational Resources Information Center

Education about nuclear arms should be balanced. Most of the supplementary materials dealing with nuclear war that are available to teachers are published by anti-war groups. Basic problems with these materials are discussed and information which can be used to present the other side of the story is provided. (RM)

Hogeboom, William L.

1984-01-01

495

Nuclear Physics with Electroweak Probes  

E-print Network

In recent years, the italian theoretical Nuclear Physics community has played a leading role in the development of a unified approach, allowing for a consistent and fully quantitative description of the nuclear response to electromagnetic and weak probes. In this paper I review the main achievements in both fields, point out some of the open problems, and outline the most promising prospects.

Omar Benhar

2009-02-26

496

Mitochondrial Control of Nuclear Apoptosis  

Microsoft Academic Search

Summary Anucleate cells can be induced to undergo programmed cell death (PCD), indicating the exist- ence of a cytoplasmic PCD pathway that functions independently from the nucleus. Cytoplas- mic structures including mitochondria have been shown to participate in the control of apop- totic nuclear disintegration. Before cells exhibit common signs of nuclear apoptosis (chromatin condensation and endonuclease-mediated DNA fragmentation), they

Naoufal Zamzami; Santos A. Susin; Philippe Marchetti

1996-01-01

497

Geologic disposal of nuclear waste  

Microsoft Academic Search

The natural and engineered barriers provided by geologic storage of nuclear wastes are the most likely choice of countries looking for a permanent solution. A review of the properties of nuclear wastes and the management strategies that will protect the public and the environment describes the isolation and disposal systems and their geologic requirements. These include a host-rock formation of

K. Stahlkopf; R. Williams; A. B. Carson

1982-01-01

498

Nuclear Energy: Promise or Peril?  

Microsoft Academic Search

This book represents the outcome of a Peer Review Workshop of the Pugwash Conferences on Science and World Affairs on `The Prospects of Nuclear Energy' held in Paris in December 1998. It is intended to address, in a manner accessible to the non-expert, the contribution that electricity production from nuclear power might make to resolving the dilemma in which an

D S Woodhead

2000-01-01

499

Anatomy of nuclear matter fundamentals  

E-print Network

The bridge between finite and infinite nuclear system is analyzed for the fundamental quantities like binding energy, density, compressibility, giant monopole excitation energy and effective mass of both nuclear matter and finite nuclei systems. It is shown quantitatively that by knowing one of the fundamental property of one system one can estimate the same in its counter part, only approximately

S. K. Patra; S. K. Biswal; S. K. Singh; M. Bhuyan

2014-02-05

500

Symmetry Energy in Nuclear Surface  

E-print Network

Interplay between the dependence of symmetry energy on density and the variation of nucleonic densities across nuclear surface is discussed. That interplay gives rise to the mass dependence of the symmetry coefficient in an energy formula. Charge symmetry of the nuclear interactions allows to introduce isoscalar and isovector densities that are approximately independent of the magnitude of neutron-proton asymmetry.

Pawel Danielewicz; Jenny Lee

2008-12-25