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1

LA POLÍTICA DE GESTIÓN DE RESIDUOS: LOS ACEITES USADOS  

Microsoft Academic Search

Los aceites usados son un residuo peligroso cuya gestión inadecuada puede provocar graves daños al medio ambiente. Además, tienen un in- dudable valor económico debido a que conservan gran parte de los hi- drocarburos que los aceites lubricantes contenían originalmente. La reco- gida de los aceites usados constituye la condición necesaria para conseguir una gestión adecuada de los mismos. La

ASUNCIÓN ARNER; RAMÓN BARBERÁN; JESÚS MUR

2006-01-01

2

Las políticas públicas de fomento del reciclaje: La regeneración de aceites usados  

Microsoft Academic Search

Los aceites usados son un residuo peligroso del que pueden derivarse graves daños medioambientales si su gestión es inadecuada; al mismo tiempo, tienen un indudable valor económico, ya que conservan gran parte de los hidrocarburos que los lubricantes contenían originalmente. La gestión de los aceites usados ofrece distintas alternativas, dirigidas principalmente al reciclaje, siendo de destacar la combustión y la

Asunción Arner Güerre; Ramón Barberán Ortí; Jesús Mur Lacambra

2003-01-01

3

Technical manual for the Augmented Computer Exercise for Inspection Training (ACE-IT) software  

SciTech Connect

The on-site inspection provisions in many current and proposed arms control agreements require extensive preparation and training on the part of both the Inspection Teams (inspectors) and Inspected Parties (host). Current training techniques include table-top inspections and practice inspections. The Augmented Computer Exercise for Inspection Training (ACE-IT), an interactive computer training tool, increases the utility of table-top inspections. ACE-IT has been designed to provide training for challenge inspections under the Chemical Weapons Convention (CWC); however, this training tool can be modified for other inspection regimes. Although ACE-IT provides training from notification of an inspection through post-inspection activities, the primary emphasis of ACE-IT is in the inspection itself--particularly with the concept of managed access. ACE-IT also demonstrates how inspection provisions impact compliance determination and the protection of sensitive information. This Technical Manual describes many of the technical aspects of the ACE-IT training software.

Dobranich, P.R. [Sandia National Labs., Albuquerque, NM (United States). Cooperative Monitoring Center and Regional Security; Horak, K.E.; Hagan, D.; Evanko, D.; Nelson, J.; Ryder, C.; Hedlund, D. [Ogden Environmental and Energy Services, Inc., Albuquerque, NM (United States)

1997-09-01

4

TOXICIDAD DE ACEITES, ESENCIAS Y EXTRACTOS VEGETALES EN LARVAS DE MOSQUITO CULEX QUINQUEFASCIATUS SAY (DIPTERA: CULICIDAE)  

Microsoft Academic Search

Se evaluaron 51 especies de plantas del estado de Oaxaca, México; 39 como extractos acuosos al 5 y 15% y 21 al 25%, y como extractos acetónicos tres especies con cinco dosis (0.1, 0.01, 0.001, 0.0001 y 0.00001%). Además de ocho aceites vegetales a tres dosis (0.1, 0.01 y 0.001%) y 11 esencias vegetales comerciales con cuatro dosis (0.1, 0.01,

Rafael PÉREZ-PACHECO; Cesáreo RODRÍGUEZ HERNÁNDEZ; Joel LARA-REYNA; Roberto MONTES BELMONT; Gustavo RAMÍREZ VALVERDE

5

Augmented Computer Exercise for Inspection Training (ACE-IT) - an interactive training tool for {open_quotes}challenge inspections{close_quotes} under the chemical weapons convention  

SciTech Connect

The on-site inspection provisions in many current and proposed arms control agreements require extensive preparation and training on the part of both the Inspection Teams and the Inspected Parties. Current training techniques include lectures, table-top inspections, and practice inspections. The Augmented Computer Exercise for Inspection Training (ACE-IT), an interactive computer training tool, increases the utility of table-top inspections. Under the Chemical Weapons Convention (CWC) challenge inspections are short-notice inspections that may occur anywhere, anytime, and with no right of refusal. The time interval between notice of intent to inspect a facility and the arrival of inspectors at the facility may be as short as 72 hours. Therefore, advance training is important. ACE-IT is used for training both the Inspection Team (inspector) and the Inspected Party (host) to conduct a hypothetical challenge inspection under the CWC. An exercise moderator controls the exercise. The training covers all of the events in the challenge inspection regime, from initial notification of an inspection through post-inspection activities. But the primary emphasis of the training tool is on conducting the inspection itself, and in particular, the concept of managed access. Managed access is used to assure the inspectors that the facility is in compliance with the CWC, while protecting sensitive information that is not related to the CWC.

Dobranich, P.R.

1997-08-01

6

Alergias a los alimentos  

Center for Food Safety and Applied Nutrition (CFSAN)

Text VersionPage 1. August 2010 1 Alergias a los alimentos Lo que usted debe saber ... Alergias a los alimentos: ¿Qué se debe hacer si aparecen síntomas? ... More results from www.fda.gov/downloads/food/resourcesforyou

7

Los Alamos Spheromak program  

SciTech Connect

The Los Alamos Spheromak has two experimental facilities. The confinement properties of sustained and decaying spheromaks are being studied in CTX. Electrodes for the production of clean sustained spheromaks are being developed on the Electrode Studies Facility.

Jarboe, T.R.

1985-01-01

8

Los Ref ige ios!  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... Las Guías Alimentarias para las Personas que Viven en los Estados Unidos recomiendan que escoja leche baja en grasa o sin grasa, yogur o ... More results from www.fda.gov/downloads/food/ingredientspackaginglabeling

9

Dateline Los Alamos  

NSDL National Science Digital Library

_Dateline Los Alamos_ is a monthly publication (Adobe Acrobat [.pdf] format only), provided by the Los Alamos National Laboratory in New Mexico. It covers recent research and product development at the laboratory. Newsletters dating from December 1995 to the present can be downloaded. A special issue from 1995 detailing the past and future of the laboratory is also available. Documents range in size from 545 Kb to 1.9 Mb.

10

Taxquake in Los Angeles  

ERIC Educational Resources Information Center

|Outlines educational, personnel, legal, and political considerations facing the Los Angeles Community College District contingency planning committee in their efforts to develop plans to meet budgetary limitations foreseen in the passage of the Jarvis-Gann property tax limitation initiative. (TP)|

Koltai, Leslie

1978-01-01

11

The Los Alamos primer  

Microsoft Academic Search

This book contains the 1943 lecture notes of Robert Serber. Serber was a protege of J. Robert Oppenheimer and member of the team that built the first atomic bomb - reveal what the Los Alamos scientists knew, and did not know, about the terrifying weapon they were building.

Serber

1992-01-01

12

The Los Angeles Times  

NSDL National Science Digital Library

The Los Angeles Times debuts its Internet edition April 8. It is slated to include daily news and features, coverage of movies and entertainment, a computers and technology section, a special section devoted to Southern California sights and events, classified advertising, and chat boards. The site will be free. A fee based site will also be available, with access to Times' archives, as well as educational and research services. http://www.latimes.com

13

Hechos Sobre Los Medicamentos Genericos  

Center for Drug Evaluation (CDER)

Text VersionPage 1. Nombre de su medicina ¿Cuantos debo cojer? ¿Cuando los cojo? ¿Para que los uso? xxx (Ejemplo) 1 tableta 400mg La mañana Artritis ... More results from www.fda.gov/downloads/drugs/emergencypreparedness

14

Earthquakes: Los Angeles  

NSDL National Science Digital Library

Although the San Andreas Fault is the longest and one of the most active fault zones in California, it is not responsible for every earthquake in the state. This video segment describes the geologic setting of the San Andreas fault and a network of other active faults, particularly thrust faults, closer to Los Angeles, and explains why these may present a greater danger to the city than the San Andreas Fault. The segment is five minutes fifteen seconds in length. A background essay and discussion questions are included. Running time for the video is 5:15.

2012-08-28

15

Earthquakes: Los Angeles  

NSDL National Science Digital Library

Although the San Andreas Fault is the longest and one of the most active fault zones in California, it is not responsible for every earthquake in the state. This video segment describes the geologic setting of the San Andreas fault and a network of other active faults, particularly thrust faults, closer to Los Angeles, and explains why these may present a greater danger to the city than the San Andreas Fault. The segment is five minutes fifteen seconds in length. A background essay and discussion questions are included.

16

Los Alamos Spheromak Program  

SciTech Connect

The Los Alamos Spheromak Program consists of two experimental facilities. The confinement physics of sustained and decaying spheromaks are being studied in CTX, which has an extensive array of diagnostics. Experiments are directed towards extending the physics understanding of the spheromak as a magnetic confinement concept. Electrodes for the production of clean sustained spheromaks are developed on the Electrode Facility, which is more flexible in terms of experimental modifications. Improvements to helicity sources and elecrodes which are proven on the Electrode Facility are then considered for incorporation onto CTX.

Knox, S.O.; Barnes, C.W.; Fernandez, J.C.; Henins, I.; Hoida, H.W.; Klingner, P.L.; Platts, D.A.; Sherwood, A.R.; Wright, B.L.; Jarboe, T.R.

1985-01-01

17

Korean Immigrants in Los Angeles  

Microsoft Academic Search

A large number of Koreans have been admitted to the United States as legal immigrants since the change in the immigration law in 1965. A significant proportion of the new Korean immigrants have settled in Los Angeles. As a result, the Los Angeles Korean community, the home of some 200,000 Koreans, has become not only the largest Korean center in

Pyong Gap Min

1990-01-01

18

Custo de bombas centrífugas funcionando como turbinas em microcentrais hidrelétricas  

Microsoft Academic Search

RESUMO: A implantação de microcentrais hidrelétricas é uma das alternativas para suprir com energia comunidades pequenas e isoladas, situadas normalmente na área rural. O aproveitamento de potenciais hidráulicos de pequeno porte é uma alternativa cada vez mais viável devido não só à falta de recursos financeiros para os grandes empreendimentos, mas também pelo imenso potencial de geração em centrais de

Carlos R. Balarim; Luiz A. Targa; Jorim S. Virgens Filho; Alceu G. Andrade Filho; Giovana K. Wiecheteck

2004-01-01

19

Manipulación segura de los alimentos  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... Hay tres maneras seguras de descongelar los ali- mentos: en el refrigerador, en agua fría y en el horno de microondas. ... More results from www.fda.gov/downloads/food/foodborneillnesscontaminants

20

Mitos De Los Ostiones Crudos  

Center for Food Safety and Applied Nutrition (CFSAN)

... que el agua. Sólo la exposición prolongada al calor a una temperatura suficiente matará a las bacterias. MITO: Evite los ... More results from www.fda.gov/food/foodborneillnesscontaminants/buystoreservesafefood

21

Los Angeles Mass Transit Strike  

NSDL National Science Digital Library

Beginning on Saturday, September 16, 2000, the drivers of the Los Angeles city buses launched a strike, stopping the 2,000 buses, subway, and rail lines that cover the 1,400 square miles of Los Angeles County, and stranding nearly half a million bus riders. The 4,300 members of the United Transportation Union (UTU) are on strike over wages and overtime. The Mass Transit Authority (MTA) of Los Angeles will face a $438 million deficit by 2010 if it does not manage to cut costs. Rather than raise fares, the MTA suggested cutting the cost of drivers's overtime pay by fifteen percent over the next three years, for a saving of $23 million. To do this, the MTA proposed that 400 drivers accept a four-day-a-week work schedule, in which they would be on duty twelve hours a day, but would only be paid for ten hours. Overtime would start only after twelve hours. The strike has already proven itself difficult for the people of Los Angeles. Traffic increased nearly five percent, and those Los Angelenos who depend on public transportation to get to work and school, have been forced to walk, carpool, or ride bikes. According to the MTA, 68 percent of MTA riders have household incomes under $15,000 a year. Talks between the UTU and the MTA were to have resumed on Tuesday morning.

22

Upper Los Alamos canyon fact sheet  

Microsoft Academic Search

Los Alamos National Laboratory is planning to make environmental assessments in portions of Upper Los Alamos Canyon. Upper Los Alamos Canyon is one of the areas included in the 2005 Consent Order agreed to by Los Alamos National Laboratory, the National Nuclear Security Administration, and the New Mexico Environment Department. As such, it must be evaluated for potential contamination. The

Jeffrey H

2007-01-01

23

Palace Revolt in Los Angeles?  

ERIC Educational Resources Information Center

|Antonio Villaraigosa, the mayor of Los Angeles, comes alive when recalling his start in local politics--as a labor organizer agitating for reform inside decrepit and overcrowded schools. In his quest to turn around the schools, the mayor has united working-class Latino parents, civil rights leaders, and big-money Democrats to challenge union…

Fuller, Bruce

2010-01-01

24

Stunted Desegregation in Los Angeles.  

ERIC Educational Resources Information Center

Despite the 1978 implementation of a new desegregation plan, analysts have found that Los Angeles schools are still segregated. This is the case because the master desegregation plan has a false definition of segregated schools, a protective covenant shielding the White schools, and a focus on their pretended desegregation. (Author/GC)

Caughey, John

1979-01-01

25

The Los Alamos ICF program  

Microsoft Academic Search

The funding and manpower levels for the Los Alamos CO2 laser-inertial confinement fusion program are examined along with the specifications of the future 100 kJ Antares laser. The operational characteristics of the Helios laser facility are described along with current experiments; new diagnostics for measuring the performance of high-density targets are emphasized.

R. P. Godwin

1980-01-01

26

Los Alamos Science: Number 16.  

National Technical Information Service (NTIS)

It was an unusually stimulating day and a half at Los Alamos when two Nobel Laureates in physiology, a leading paleontologist, and a leading bio-astrophysicist came together to discuss ''Unsolved Problems in the Science of Life,'' the topic of the second ...

N. G. Cooper

1988-01-01

27

Establishment of Armed Forces Reserve Center, Los Alamitos. City of Los Alamitos, California.  

National Technical Information Service (NTIS)

The impact statement discusses the establishment of an Armed Forces Reserve Center, Los Alamitos, California, at the Naval Air Station, Los Alamitos through the relocation to Los Alamitos of certain Reserve Component personnel, non-aviation units and avia...

1972-01-01

28

Satellites monitor Los Alamos fires  

NASA Astrophysics Data System (ADS)

A man-made fire that was intended to be a “controlled burn” for clearing brush and wilderness at the Bandelier National Monument, New Mexico, became an inferno that devastated significant portions of Los Alamos during the first week of May 2000. Now known as the Cerro Grande fire, it was not confined to Los Alamos alone. The fire spread to 15% of the Santa Clara Indian Reservation and a substantial area of the surrounding national parks and U.S. forests.The National Weather Service estimates that more than 100,000 fires occur in the natural environment each year within the United States alone, of which about 90% are manmade. Remote sensing images from satellites could be used to detect and monitor these active fires and biomass burning. Forest fires have a significant environmental and economic impact, and timely information about their location and magnitude is essential to contain them.

Kalluri, Satya; White, Benjamin

29

Los Alamos Critical Assemblies Facility  

SciTech Connect

The Critical Assemblies Facility of the Los Alamos National Laboratory has been in existence for thirty-five years. In that period, many thousands of measurements have been made on assemblies of /sup 235/U, /sup 233/U, and /sup 239/Pu in various configurations, including the nitrate, sulfate, fluoride, carbide, and oxide chemical compositions and the solid, liquid, and gaseous states. The present complex of eleven operating machines is described, and typical applications are presented.

Malenfant, R.E.

1981-06-01

30

Muon Project At Los Alamos  

NASA Astrophysics Data System (ADS)

We are working on designing a next-generation muon facility for LANSCE at Los Alamos National Laboratory. The use of muon accelerators is the key feature to generate a muon micro beam of tunable energy. The muon micro beam will realize a beam luminocity of 109 ?+/cm2 s which is 4 orders or more higher than present muon facilities. Some designs and results of simulations, especially a high-collection muon radio-frequency quadrupole, are described in this paper.

Miyadera, H.; Jason, A. J.; Nagamine, K.

2008-02-01

31

Los Angeles and Its Mistress Machine  

ERIC Educational Resources Information Center

|Los Angeles city has acute air pollution problems because of lack of an adequate mass transit system and the type of local industries. Air pollution in Los Angeles has affected agricultural production, vegetation, and public health in nearby areas. (PS)|

Marx, Wesley

1973-01-01

32

27 CFR 9.32 - Los Carneros.  

Code of Federal Regulations, 2010 CFR

...2009-04-01 2009-04-01 false Los Carneros. 9.32 Section 9.32 ...American Viticultural Areas § 9.32 Los Carneros. (a) Name . The name of...viticultural area described in this section is âLos Carnerosâ. âCarnerosâ may also...

2009-04-01

33

Los Alamos Science: Number 16  

SciTech Connect

It was an unusually stimulating day and a half at Los Alamos when two Nobel Laureates in physiology, a leading paleontologist, and a leading bio-astrophysicist came together to discuss ''Unsolved Problems in the Science of Life,'' the topic of the second in a series of special meetings sponsored by the Fellows of the Laboratory. Just like the first one on ''Creativity in Science,'' this colloquium took us into a broader arena of ideas and viewpoints than is our usual daily fare. To contemplate the evolution and mysteries of intelligent life from the speakers' diverse points of view at one time, in one place was indeed a rare experience.

Cooper, N.G. (ed.)

1988-01-01

34

Los Alamos intense neutron source  

SciTech Connect

The intense neutron source is an inertial electrostatic confinement (IEC) fusion device currently under construction at Los Alamos National Laboratory. It is designed to produce 10{sup 11} n/s steady state and will be used for nuclear assay applications. It is being built in a hot cell and will operate with a deuterium-tritium fuel mixture. This device is a three-grid IEC ion focus device. Expected performance has been predicted by scaling from a previous IEC device. In this paper we describe the physics principles of operation of this device, the engineering design parameters, and the empirical scaling used to determine the design parameters.

Nebel, R.A.; Pickrell, M.M.; Barnes, D.C. [Los Alamos National Lab., NM (United States)] [and others

1997-12-01

35

Los Alamos racquetball contamination incident  

SciTech Connect

Several employees of the Los Alamos Plutonium Facility were found to have low levels of radioactivity on their hands and clothing when they arrived for work one morning. The initial concern was that the stringent contamination or material controls at the facility had failed, and that one or more of the employees had either accidentally or intentionally removed plutonium from the Laboratory premises. Fortunately, however, an investigation revealed that the source of the radioactivity was radon daughters electrostatically collected upon the surface of the racquetball and transferred by physical contact to the employees during an early morning racquetball game. This paper describes the events leading to the discovery of this phenomenon. 1 figure.

McAtee, J.L.; Stafford, R.G.; Dowdy, E.J.; Prestwood, R.J.

1985-01-01

36

Significado de los cambios en los senos: Guía para la salud de la mujer  

Cancer.gov

E-book que describe los cambios o padecimientos específicos de los senos e incluye información sobre cómo se detectan, diagnostican y tratan estos cambios. Aquí se explica que si bien la mayoría de los cambios en los senos no son cancerosos, estos deben ser examinados por un médico. También se ofrece información sobre los pasos a seguir después de un resultado anormal de una mamografía y se incluye una lista de preguntas para el doctor.

37

Los Alamos opacity web page  

SciTech Connect

The Los Alamos opacity data base is now available on the World Wide Web at http://t4.lanl.gov. The data base contains both the original Astrophysical Opacity Library distributed worldwide in the 1980`s (for historical reference) and the new improved opacities from the Light Element Detailed Configuration OPacity (LEDCOP) code. Users can access the opacity data using the multigroup opacity code TOPS to obtain Rosseland and Planck gray opacities, group mean opacities over selected energy ranges, the monochromatic absorption coefficients and the average ionization over a wide range of temperatures and densities. As described in this paper, these quantities are available for all of the elements presently on the data base and TOPS will provide the same quantities for any arbitrary mixture of these elements.

Magee, N.H. Jr.; Clark, R.E.H.

1998-02-01

38

Los Alamos PC estimating system  

SciTech Connect

The Los Alamos Cost Estimating System (QUEST) is being converted to run on IBM personal computers. This very extensive estimating system is capable of supporting cost estimators from many different and varied fields. QUEST does not dictate any fixed method for estimating. QUEST supports many styles and levels of detail estimating. QUEST can be used with or without data bases. This system allows the estimator to provide reports based on levels of detail defined by combining work breakdown structures. QUEST provides a set of tools for doing any type of estimate without forcing the estimator to use any given method. The level of detail in the estimate can be mixed based on the amount of information known about different parts of the project. The system can support many different data bases simultaneously. Estimators can modify any cost in any data base.

Stutz, R.A.; Lemon, G.D.

1987-01-01

39

Bruce D. Judd, FAIA, Photographer August 1997. VIEW OF LOS ...  

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

Bruce D. Judd, FAIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL TWENTIETH FLOOR JUDGE'S TOILET ROOM, FACING NORTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

40

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FOURTEENTH FLOOR SOUTHWEST TOILET ROOM, FACING NORTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

41

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FOURTEENTH FLOOR NORTHWEST TOILET ROOM, FACING NORTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

42

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL SEVENTH FLOOR SOUTH TOILET ROOM OFF ELEVATOR LOBBY, FACING SOUTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

43

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FOURTEENTH FLOOR SOUTHWEST TOILET ROOM, FACING SOUTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

44

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL FIRST FLOOR SHOWING EAST ELEVATOR LOBBY EXPRESS ELEVATOR DOORS, FACING NORTH. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

45

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL FIFTH FLOOR, ELEVATOR LOBBY SHOWING ELEVATOR DOORS, FACING SOUTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

46

Bruce D. Judd, FAIA, Photographer August 1997. DETAIL OF LOS ...  

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

Bruce D. Judd, FAIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL NORTH ENTRANCE SHOWING STAIRS, DOORS AND WINDOW CONFIGURATION, FACING SOUTH. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

47

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL ROOM 900 SHOWING WOOD AND GLASS PARTITIONS, FACING SOUTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

48

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL THIRD FLOOR MAYOR'S OFFICE CHAMBER SHOWING WOOD PANELED DOOR AND BOOKCASES, FACING NORTH. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

49

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL ROOM 900 EAST OF ELEVATOR LOBBY SHOWING WOOD AND GLASS PARTITIONS, FACING SOUTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

50

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FIFTH FLOOR BREAK ROOM OFF OF ORIGINAL ART COMMISSION ROOMS, FACING SOUTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

51

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FIFTH FLOOR BREAK ROOM OFF OF ORIGINAL ART COMMISSION ROOMS, FACING NORTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

52

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL NINETEENTH FLOOR MAIN OFFICE AREA SHOWING DEMOLITION OF SOUTH WALL, FACING SOUTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

53

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FIFTH FLOOR WEST OFFICE AREA THAT WAS ORIGINAL ART COMMISSION ROOMS, FACING NORTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

54

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL NINETEENTH FLOOR MAIN OFFICE AREA SHOWING DEMOLITION OF WEST WALL, FACING WEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

55

Bruce D. Judd, FAIA, Photographer August 1997. DETAIL OF LOS ...  

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

Bruce D. Judd, FAIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL SIXTH FLOOR NORTH OFFICE AREA WINDOW, FACING NORTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

56

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FIFTH FLOOR WEST OFFICE AREA THAT WAS ORIGINAL ART COMMISSION ROOMS, FACING NORTHWEST. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

57

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL NINETEENTH FLOOR MAIN OFFICE AREA SHOWING BEAM AND COLUMN CONNECTION NEAR SOUTHEAST CORNER, FACING SOUTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

58

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL SEVENTH FLOOR SOUTH OFFICE AREA SHOWING WOOD AND GLASS PARTITIONS, FACING SOUTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

59

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FIFTH FLOOR NORTH OFFICE AREA, FACING NORTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

60

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL SEVENTH FLOOR SOUTH OFFICE AREA SHOWING RADIATOR AND WINDOWS, FACING EAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

61

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL NINETEENTH FLOOR MAIN OFFICE AREA, FACING NORTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

62

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL SEVENTH FLOOR SOUTH OFFICE AREA SHOWING STRUCTURAL PIERS AND FLORESCENT LIGHTS, FACING NORTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

63

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FOURTEENTH FLOOR, SERVICE AREA DOOR NEAR ELEVATOR LOBBY, FACING SOUTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

64

Bruce D. Judd, FAIA, Photographer August 1997. VIEW OF LOS ...  

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

Bruce D. Judd, FAIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL SIXTH FLOOR NORTH OFFICE AREA, FACING NORTH - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

65

Bruce D. Judd, FAIA, Photographer August 1997. VIEW OF LOS ...  

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

Bruce D. Judd, FAIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL ELEVENTH FLOOR KITCHEN OF EXECUTIVE DINING AREA SHOWING ARCHED STRUCTURE, FACING NORTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

66

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL NINETEENTH FLOOR MAIN OFFICE AREA, FACING NORTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

67

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. VIEW OF LOS ANGELES CITY HALL FIFTH FLOOR NORTH OFFICE AREA, FACING NORTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

68

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL NINETEENTH FLOOR MAIN OFFICE AREA SHOWING BEAM AND COLUMN CONNECTION NEAR NORTHWEST CORNER, FACING NORTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

69

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL THIRD FLOOR SHOWING ROTUNDA STANDING LIGHT FIXTURE, FACING NORTHEAST. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

70

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL THIRD FLOOR SHOWING ROTUNDA COLUMN CAPITALS AND LIGHT FIXTURES, FACING SOUTHEAST. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

71

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES ...  

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

John Ash, AIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL TENTH FLOOR SOUTH WING CAFETERIA LIGHT FIXTURE, FACING SOUTHWEST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

72

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL SOUTH ENTRY SHOWING DOORS AND LIGHT FIXTURES, FACING NORTH. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

73

Bruce D. Judd, FAIA, Photographer August 1997. DETAIL OF LOS ...  

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

Bruce D. Judd, FAIA, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL NORTH ENTRANCE SHOWING DOORS AND LIGHT FIXTURES, FACING SOUTH. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

74

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL EAST ENTRANCE PORCH SHOWING VAULTS AND LIGHT FIXTURE, FACING UP. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

75

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL THIRD FLOOR SHOWING ROTUNDA COLUMN CAPITALS AND LIGHT FIXTURES, FACING SOUTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

76

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL WEST ENTRANCE COURTYARD SHOWING BRONZE DOORS, LIGHT FIXTURES AND GRILLS, FACING EAST. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

77

DERECHOS FUNDAMENTALES DE LOS ANCIANOS -POLÍTICA Y ECONOMÍA  

Microsoft Academic Search

RESUMEN: Este trabajo aborda el problema de los derechos de los ancianos, como parte de los Derechos Económicos, Sociales y Culturales. En primer lugar se sigue la perspectiva del Derecho, caracterizando formalmente a los Derechos Fundamentales y sus relaciones con la democracia cons- titucional. Se desarrolla luego el tema de las garantías de los derechos de los ancianos en Argentina,

Jorge Bellina Yrigoyen

2006-01-01

78

Los cambios en la velocidad de rotación terrestre y los fenómenos geomagnéticos  

NASA Astrophysics Data System (ADS)

Uno de los aspectos importantes relativos a la geodinámica del interior terrestre es la correlación entre los eventos de cambio en la velocidad de rotación terrestre y los determinados en los elementos del campo geomagnético por ejemplo, la Declinación Magnética, o los coeficientes de los modelos matemáticos de representación global de dicho campo. En este trabajo se presentan los resultados de las características espectrales de los cambios observados en la longitud del día (ldd), y su relación con la estructura espectral de las coeficientes de los modelos matemáticos de campo denominados Campo Internacional Geomagnético de Referencia (CIGR). El intervalo estudiado comprende los últimos 100 años. Los resultados muestran una correlación en las bandas de 60 y 30 años, con posibles períodos mucho mayores que no son posibles determinar a partir de los modelos de CIRG. Se efectúa una simulación a partir de los resultados obtenidos por la aplicación del método de máxima entropía con longitudes del filtro predictor de error comprendida entre el 10% y el 95% de la longitud de la serie analizada. Se observan procesos sicrónicos y asincrónicos que, en muy largos intervalos de tiempos, podrían suponerse como caóticos.

Gianibelli, J. C.

79

Significado de los cambios en los senos: Guía para la salud de la mujer  

Cancer.gov

Información sobre cambios o padecimientos específicos de los senos y cómo se detectan, diagnostican y tratan estos cambios. Aquí se explica que si bien la mayoría de los cambios en los senos no son cancerosos, estos deben ser examinados por un médico. También se ofrece información sobre los pasos a seguir después de un resultado anormal de una mamografía y se incluye una lista de preguntas para el doctor.

80

Significant Silence in Elena Garro's "Los Perros"  

ERIC Educational Resources Information Center

|Elena Garro's one-act play "Los perros" (1958) confronts the difficult issue of sexual violence in rural Mexico, a problem that persists today. The characters struggle with the social reality of rape, alluding to the threat of sexual violence while avoiding addressing it directly. While words are granted an almost magical power in "Los perros",…

Burke, Jessica

2010-01-01

81

The Los Angeles Rebellion: A Retrospective View  

Microsoft Academic Search

The Los Angeles rebellion of 1992 is evaluated from an urban political economy perspective. After discussing the anatomy of the rebellion and assessing retrospectively the outcome of the police brutality trial; the civil unrest is situated within the broader context of the recent demographic, social, and economic changes occurring in Los Angeles society. This is followed by a critical review

James H. Johnson; Cloyzelle K. Jones; Walter C. Farrell; Melvin L. Oliver

1992-01-01

82

The Los Alamos Neutron Science Center (LANSCE)  

Microsoft Academic Search

In October 1995, with the closeout of the nuclear physics user program and the increased national need for neutrons, Los Alamos National Laboratory refocused the mission of its linear accelerator complex. The new mission called for the development and use of spallation neutron sources for research and applications. As a result, the accelerator complex formerly known as the Los Alamos

J. A. Roberts

1999-01-01

83

LOS CAMBIOS EN EL CONSUMO ALIMENTARIO: REPERCUSIÓN EN LOS PRODUCTOS MEDITERRÁNEOS  

Microsoft Academic Search

Introducción El consumo de productos alimentarios en España se ha modificado notablemente en las últimas décadas. Con datos de la Organización de las Naciones Unidas para la Agricultura y la Alimentación (FAO), los niveles de consumo de energía en España son similares al promedio de los países desarrollados (3.470 calorías), pero los niveles de consumo de proteína y de grasa

José María García Álvarez-Coque; Teresa López-García Usach

84

Los Angeles at Work: 1920-1939  

NSDL National Science Digital Library

An online photo gallery from the Los Angeles Public Library, Los Angeles at Work is a collection of captioned photographs documenting different jobs held by the men and women of LA from 1920 to 1939. The photographs were chosen from an archive of thousands of pictures taken by the staff of the Los Angeles Chamber of Commerce. The pithy captions describe the circumstances of the photos, highlight some of the details, and give the dates and locations of the photos. Click on the thumbnails of the pictures in order to enlarge them.

85

Underground science initiatives at Los Alamos  

SciTech Connect

Recently, the Los Alamos National Laboratory has proposed two major new initiatives in underground science. Following the dissolution of the original gallium solar neutrino collaboration, Los Alamos has formed a new North American collaboration. We briefly review the rationale for solar neutrino research, outline the proposal and new Monte Carlo simulations, and describe the candidate locations for the experiment. Because there is no dedicated deep underground site in North America suitable for a wide range of experiments, Los Alamos has conducted a survey of possible sites and developed a proposal to create a new National Underground Science Facility. This paper also reviews that proposal.

Simmons, L.M. Jr.

1985-01-01

86

Virtual instruments -- A Los Alamos experiment.  

National Technical Information Service (NTIS)

Changing priorities, shrinking budgets, reduced personnel, and collapsed time schedules in post-Cold War Los Alamos have forced project managers to face software ''time-to-market'' issues similar to their commercial counterparts. Programs that are funded ...

N. S. Khalsa

1995-01-01

87

Publications of Los Alamos research 1988  

SciTech Connect

This bibliography lists unclassified publications of work done at the Los Alamos National Laboratory for 1988. The entries, which are subdivided by broad subject categories, are cross-referenced with an author index and a numeric index.

Varjabedian, K.; Dussart, S.A.; McClary, W.J.; Rich, J.A. (comps.)

1989-12-01

88

New Rad Lab for Los Alamos  

ScienceCinema

The topping out ceremony for a key construction stage in the Los Alamos National Laboratory's newest facility, the Radiological Laboratory Utility & Office Building. This is part of the National Nu...  

89

COMPOSITION OF AEROSOLS OVER LOS ANGELES FREEWAYS  

EPA Science Inventory

In October of 1976, aerosol particulate samples were collected while driving on Los Angeles freeways and were analyzed for sulfate, nitrate, and elemental composition. The measurements indicate that neither nitrate nor sulfate concentrations increased significantly over the roadw...

90

Multimodal Arterial LOS Modeling and Testing.  

National Technical Information Service (NTIS)

The Highway Capacity and Quality and Service Committee has extensively deliberated the multimodal level of service (LOS) models resulting from the recently completed NCHRP 3-70 project, and has tentatively approved the bus, bicycle, and pedestrian models ...

B. Landis B. Perez J. Barrios P. McLeod S. S. Washburn

2009-01-01

91

Environmental surveillance at Los Alamos during 1994  

SciTech Connect

This report describes environmental monitoring activities at Los Alamos National Laboratory for 1994. Data were collected to assess external penetrating radiation, airborne emissions, liquid effluents, radioactivity of environmental materials and food stuffs, and environmental compliance.

NONE

1996-07-01

92

Los Alamos National Laboratory's Find a Job  

NSDL National Science Digital Library

This page offers a considerable listing of positions available at the Los Alamos National Laboratory (LANL). Subheadings for employment include Regular, Limited-Term, Postdoctoral, Graduate Student, Undergraduate Student, High school Student, and Contract/ Secretarial Pool.

93

Los Angeles Electricity Rate Study. Final Report.  

National Technical Information Service (NTIS)

This volume contains the following reports (with their publication dates noted): Design of the Los Angeles Peak-Load Pricing Experiment for Electricity, November 1974; Peak-Load Pricing in Selected European Electric Utilities, July 1977; Lessons to be lea...

J. P. Acton B. M. Mitchell

1980-01-01

94

Seguridad de los alimentos: Es especialmente importante ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... por los alimentos durante el embarazo son graves y pueden llevar a un aborto espontáneo, a un parto prematuro, que el bebé nazca muerto, a ... More results from www.fda.gov/food/foodborneillnesscontaminants/peopleatrisk

95

Volcanology at the Los Alamos Scientific Laboratory.  

National Technical Information Service (NTIS)

This mini-review briefly describes the research conducted at Los Alamos Scientific Laboratory (LASL) on various areas in volcanology. Areas of research include volcanic hazard analysis, the climatic effects of volcanic eruptions, young volcanic fields as ...

G. Heiken

1980-01-01

96

Publications of Los Alamos Research 1980.  

National Technical Information Service (NTIS)

This bibliography is a compilation of unclassified publications of work done at the Los Alamos National Laboratory for 1980. Papers published in 1980 are included regardless of when they were actually written. Publications received too late for inclusion ...

C. A. Salazar J. K. Willis

1981-01-01

97

Internship at Los Alamos National Laboratory  

SciTech Connect

Los Alamos National Laboratory (LANL) is located in Los Alamos, New Mexico. It provides support for our country's nuclear weapon stockpile as well as many other scientific research projects. I am an Undergraduate Student Intern in the Systems Design and Analysis group within the Nuclear Nonproliferation division of the Global Security directorate at LANL. I have been tasked with data analysis and modeling of particles in a fluidized bed system for the capture of carbon dioxide from power plant flue gas.

Dunham, Ryan Q. [Los Alamos National Laboratory

2012-07-11

98

82. FIRST AND SECOND AQUEDUCTS LOOKING NORTHEAST Los Angeles ...  

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

82. FIRST AND SECOND AQUEDUCTS LOOKING NORTHEAST - Los Angeles Aqueduct, From Lee Vining Intake (Mammoth Lakes) to Van Norman Reservoir Complex (San Fernando Valley), Los Angeles, Los Angeles County, CA

99

47. LINED SECTION OF AQUEDUCT LOOKING NORTHWEST, COTTONWOOD Los ...  

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

47. LINED SECTION OF AQUEDUCT LOOKING NORTHWEST, COTTONWOOD - Los Angeles Aqueduct, From Lee Vining Intake (Mammoth Lakes) to Van Norman Reservoir Complex (San Fernando Valley), Los Angeles, Los Angeles County, CA

100

78. SECOND AQUEDUCT LOOKING SOUTH NEAR PINETREE SIPHON Los ...  

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

78. SECOND AQUEDUCT LOOKING SOUTH NEAR PINETREE SIPHON - Los Angeles Aqueduct, From Lee Vining Intake (Mammoth Lakes) to Van Norman Reservoir Complex (San Fernando Valley), Los Angeles, Los Angeles County, CA

101

84. LA AQUEDUCT CROSSING CALIFORNIA AQUEDUCT LOOKING NORTH Los ...  

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

84. LA AQUEDUCT CROSSING CALIFORNIA AQUEDUCT LOOKING NORTH - Los Angeles Aqueduct, From Lee Vining Intake (Mammoth Lakes) to Van Norman Reservoir Complex (San Fernando Valley), Los Angeles, Los Angeles County, CA

102

87. AQUEDUCT IN COVERED CONDUIT LOOKING NORTHWEST Los Angeles ...  

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

87. AQUEDUCT IN COVERED CONDUIT LOOKING NORTHWEST - Los Angeles Aqueduct, From Lee Vining Intake (Mammoth Lakes) to Van Norman Reservoir Complex (San Fernando Valley), Los Angeles, Los Angeles County, CA

103

Estados que requieren cobertura de los costos de estudios clínicos  

Cancer.gov

Una lista de búsqueda y el mapa de los estados de EE.UU. requieren que los planes de salud para pagar los costos de la atención del paciente asociados con ensayos clínicos. Las principales disposiciones se resumen.

104

The Effects of Los Angeles Universal Preschool on Quality Preschool Teacher Retention in Los Angeles County  

ERIC Educational Resources Information Center

|The purpose of this study was to determine if the implementation of Los Angeles Universal Preschool (LAUP) programs has a positive effect on the retention of quality preschool teachers in Los Angeles County. In prior work, preschool teacher retention is associated with wages, program structure, program process, professional development, and…

Lopez Stevens, Holly Anne

2010-01-01

105

Publications of Los Alamos research 1980  

SciTech Connect

This bibliography is a compilation of unclassified publications of work done at the Los Alamos National Laboratory for 1980. Papers published in 1980 are included regardless of when they were actually written. Publications received too late for inclusion in earlier compilations have also been listed. Declassification of previously classified reports is considered to constitute publication. All classified issuances are omitted-even those papers, themselves unclassified, which were published only as part of a classified document. If a paper was pubished more than once, all places of publication are included. The bibliography includes Los Alamos National Laboratory reports, papers released as non-laboratory reports, journal articles, books, chapters of books, conference papers published either separately or as part of conference proceedings issued as books or reports, papers published in congressional hearings, theses, and US patents. Publications by Los Alamos authors that are not records of Laboratory-sponsored work are included when the Library becomes aware of them.

Salazar, C.A.; Willis, J.K. (comps.) [comps.

1981-09-01

106

Status of Monte Carlo at Los Alamos  

SciTech Connect

At Los Alamos the early work of Fermi, von Neumann, and Ulam has been developed and supplemented by many followers, notably Cashwell and Everett, and the main product today is the continuous-energy, general-purpose, generalized-geometry, time-dependent, coupled neutron-photon transport code called MCNP. The Los Alamos Monte Carlo research and development effort is concentrated in Group X-6. MCNP treats an arbitrary three-dimensional configuration of arbitrary materials in geometric cells bounded by first- and second-degree surfaces and some fourth-degree surfaces (elliptical tori). Monte Carlo has evolved into perhaps the main method for radiation transport calculations at Los Alamos. MCNP is used in every technical division at the Laboratory by over 130 users about 600 times a month accounting for nearly 200 hours of CDC-7600 time.

Thompson, W.L.; Cashwell, E.D.

1980-01-01

107

Publications of Los Alamos Research, 1983  

SciTech Connect

This bibliography is a compilation of unclassified publications of work done at the Los Alamos National Laboratory for 1983. Papers published in 1982 are included regardless of when they were actually written. Publications received too late for inclusion in earlier compilations have also been listed. Declassification of previously classified reports is considered to constitute publication. All classified issuances are omitted - even those papers, themselves unclassified, which were published only as part of a classified document. If a paper was published more than once, all places of publication are included. The bibliography includes Los Alamos National Laboratory reports, papers released as non-Laboratory reports, journal articles, books, chapters of books, conference papers either published separately or as part of conference proceedings issued as books or reports, papers publishd in congressional hearings, theses, and US patents. Publications by Los Alamos authors that are not records of Laboratory-sponsored work are included when the Library becomes aware of them.

Sheridan, C.J.; McClary, W.J.; Rich, J.A.; Rodriguez, L.L. (comps.)

1984-10-01

108

SEDs at Los Alamos: A Personal Memoir  

NASA Astrophysics Data System (ADS)

I have written this personal memoir approximately 55 years after the events I describe. It is based almost exclusively on memory, since apart from the diary I kept while on Tinian, I have few documents concerning it. It covers my service in the U.S. Army's Special Engineering Detachment (SED) in Oak Ridge and Los Alamos in 1944-45, on Tinian island, the launching pad for the bombing raids on Japan, in the summer and fall of 1945, and my return to Los Alamos until my discharge in January 1946.

Bederson, Benjamin

2001-03-01

109

Los Angeles Community Colleges Student Characteristics, Fall 1997.  

ERIC Educational Resources Information Center

This report documents Los Angeles Community Colleges' student characteristics. It begins with a glossary providing specific definitions for the student characteristic criteria. Descriptive summaries and tables of student characteristic data are provided for the Los Angeles Community College District, Los Angeles City College, East Los Angeles…

Tillberg, Rebecca; Crespo, Sarah P.; Lagrimas, Joseph

110

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL THIRD FLOOR SESSION ROOM OF THE BOARD OF PUBLIC WORKS SHOWING COLUMNS, CAPITALS, CEILING AND LIGHTS, FACING NORTHEAST - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

111

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY ...  

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

Monica Griesbach, Photographer August 1997. DETAIL OF LOS ANGELES CITY HALL THIRD FLOOR SESSION ROOM OF THE BOARD OF PUBLIC WORKS SHOWING COLUMNS, CAPITALS, CEILING AND LIGHTS, FACING NORTHEAST. - Los Angeles City Hall, 200 North Spring Street, Los Angeles, Los Angeles County, CA

112

CALIDAD DE LOS ANÁLISIS DE RIESGO E INSEGURIDAD DE LOS TRANSGÉNICOS PARA LA SALUD AMBIENTAL Y HUMANA  

Microsoft Academic Search

RESUMEN Las plantas transgénicas, en general, cargan genes de resistencia a antibióticos y secuencias que favorecen la transferencia de genes y la inestabilidad. Además es imprevisible el sitio de inserción del transgene, los efectos colaterales y los efectos a los organismos no blancos o en la cadena alimentaria. Tampoco es posible controlar la expresión de los transgenes insertados o la

Rubens Onofre Nodari

2009-01-01

113

La política brasileña para los residuos sólidos urbanos. Los planteamientos de catadores y empresarios en sus páginas electrónicas  

Microsoft Academic Search

El gobierno brasileño señala la posibilidad de aprobar la política nacional para los residuos sólidos urbanos (PNRS). La propuesta del Proyecto de Ley 1991\\/07 está en trámite en la cámara de los diputados desde el año 1991. Los senadores mantuvieron una charla con los catadores, empresarios del reciclaje y empresarios de servicios de gestión de residuos sólidos urbanos para conocer

Fábio Fonseca Figueiredo

2008-01-01

114

La malnutrición en los países desarrollados  

Microsoft Academic Search

ResumenEn las sociedades desarrolladas se ha constatado repetidamente que la desnutrición es común en pacientes hospitalizados. A pesar de contribuir a desenlaces adversos, puede pasar inadvertida a menos que se emprenda sistemáticamente una evaluación formal. El equipo de apoyo nutricional desempeña papeles importantes en la formación del personal con respecto a la importancia de la nutrición para todos los pacientes

John W. L. Puntis

2009-01-01

115

Los Alamos upgrade in metallographic capabilities  

SciTech Connect

The Los Alamos Wing 9 hot cell metallographic sample preparation and examination capability is being upgraded. The present capability to grind, polish, and etch samples from reactor fuels and materials has been in operation for 18 years. Upgraded capabilities in the sodium distillation unit and the grinding and polishing facilities and innovations in blister design for microstructural examinations are described in the paper.

Ledbetter, J.M.; Dowler, K.E.; Cook, J.H.

1985-11-01

116

Recent Development in Pyrochemistry at Los Alamos.  

National Technical Information Service (NTIS)

Recent developments in pyrochemical processing at Los Alamos include the recovery of plutonium from anodes and impure metal by pyroredox and new molten salt handling and purification techniques. The anode is dissolved in a ZnCl sub 2 KCl salt to form PuCl...

J. A. McNeese K. W. Fife J. D. Williams

1984-01-01

117

Hot Dry Rock Overview at Los Alamos  

Microsoft Academic Search

The Hot Dry Rock (HDR) geothermal energy program is a renewable energy program that can contribute significantly to the nation's balanced and diversified energy mix. Having extracted energy from the first Fenton Hill HDR reservoir for about 400 days, and from the second reservoir for 30 days in a preliminary test, Los Alamos is focusing on the Long Term Flow

Michael Berger; Robert H. Hendron

1989-01-01

118

Counting the homeless in Los Angeles County  

Microsoft Academic Search

Over the past two decades, a variety of methods have been used to count the homeless in large metropolitan areas. In this paper, we report on an effort to count the homeless in Los Angeles County, one that employed the sampling of census tracts. A number of complications are discussed, including\\\\^{E} the need to impute homeless counts to areas of

Richard Berk; Brian Kriegler; Donald Ylvisaker

2008-01-01

119

Publications of Los Alamos research 1988.  

National Technical Information Service (NTIS)

This bibliography lists unclassified publications of work done at the Los Alamos National Laboratory for 1988. The entries, which are subdivided by broad subject categories, are cross-referenced with an author index and a numeric index. (ERA citation 15:0...

K. Varjabedian S. A. Dussart W. J. McClary J. A. Rich

1989-01-01

120

Los Alamos National Laboratory computer benchmarking 1988  

Microsoft Academic Search

This report summarizes the results of computer performance evaluations as measured by the Computer Research and Applications Group of the Los Alamos National Laboratory. The benchmarks were conducted between December 1986 and July 1988. Important characteristics of the machines tested are given, and execution times or megaflop rates for a set of portable Fortran 77 benchmark codes are listed. A

H. J. Wasserman

1988-01-01

121

Los Alamos Forest Fire Impact Modeling  

NASA Astrophysics Data System (ADS)

A controlled burn at Bandelier National Monument got out of control and burned about 43,000 acres (17,400 hectares) near Los Alamos, New Mexico, in May 2000. The wildfire caused dramatic changes in infiltration capacity and wettability of soils in many of the watersheds above Los Alamos National Laboratory (LANL) and destroyed the "duff" layer, dramatically reducing the interception and infiltration capacity of the formerly forested watersheds. These sudden changes in basin hydrology necessitated a rapid assessment of hydrology and hydraulics for the canyons running through LANL property to evaluate flood risk, plan emergency flood protection measures, and assess potential sediment and actinide transport. This paper presents the results of hydrologic and hydraulic modeling of Los Alamos Canyon following the wildfire. The large scale modeling effort, with over 13,000 cross sections for the hydraulic model (5,000 for Los Alamos Canyon, 8,000 for Guaje Canyon), relied heavily on a geographic information system (GIS) for model input and floodplain delineation. The HEC-geoRAS model provided good integration between the hydraulic model (HEC-RAS, Version 3.0.1) and the GIS (ArcView, v. 3.3). These modeling results are being used in drainage master planning efforts at LANL and in the development of sediment transport models using HEC-6T. Sediment transport modeling results will be used to develop actinide transport models for the canyons at LANL.

Earles, T. Andrew; Wright, Kenneth R.; Brown, Christopher; Langan, Thomas E.

2004-04-01

122

Los Alamos National Laboratory solar program  

SciTech Connect

Progress is reported for passive solar tasks performed at the Los Alamos National Laboratory during FY 1982. Results on test cell experiments for the 1981-1982 winter are reported, as are Class A performance monitoring, passive cooling, both residential and commercial economic cooling assessments, and thermal effects of distributed mass in passive buildings.

Reisfeld, S.K.; Neeper, D.A.

1982-01-01

123

Los Alamos Science, Number 23, 1995.  

National Technical Information Service (NTIS)

Contents: Radiation, Cancer, and Risk--Three Primers; Ionizing Radiation--It's Everywhere; Radiation, Cell Cycle, and Cancer; Radiation and Risk: A Hard Look at the Data; On the Front Lines--A Rountable with Los Alamos Plutonium Workers Past and Present; ...

N. G. Cooper

1995-01-01

124

EL ESTADO EN LOS MONTES DE MARIA  

Microsoft Academic Search

Se pretende en el presente trabajo, mostrar las carcatristicas que presenta el Estado en los Montes de María (1) (departamentos de Sucre y Bolívar, republica de Colombia), en el cual se resalta la naturaleza mafiosa y politiquera de un Estado que ya no existe como tal y que se ha convertido en feudos de la politiquería local. Igualmente, se hace

Daniel Menco Rivera

2009-01-01

125

Microfiltration goes Hollywood: the Los Angeles experience  

Microsoft Academic Search

Faced with the need for additional treatment of its finished water stored in the Hollywood Reservoirs, the Los Angeles Department of Water and Power evaluated the efficacy of microf iltration (MF) to meet the requirements of the Surface Water Treatment Rule. This evaluation included a pilot test to assess the MF process and to define the design parameters (flux and

Ali A. Karimi; James C. Vickers; Richard F. Harasick

1999-01-01

126

Optics Code Development at Los Alamos.  

National Technical Information Service (NTIS)

This paper is an overview of part of the beam optics code development effort in the Accelerator Technology Division at Los Alamos National Laboratory. The aim of this effort is to improve our capability to design advanced beam optics systems. The work rep...

C. T. Mottershead W. P. Lysenko

1988-01-01

127

Los Compadres: ESL Student Mentor Program.  

ERIC Educational Resources Information Center

Los Compadres is a program that pairs advanced high school Spanish students with elementary English-as-a-Second-Language native Spanish speakers. Teachers prepare lessons based upon authentic literature, written in English and Spanish, which include vocabulary review and literature response activities. The high school students prepare for the…

Coryell, Joellen; Gonzales, Edna; Claudia, Cary; Cisneros, Joe

128

Los Compadres: ESL Student Mentor Program.  

ERIC Educational Resources Information Center

|Los Compadres is a program that pairs advanced high school Spanish students with elementary English-as-a-Second-Language native Spanish speakers. Teachers prepare lessons based upon authentic literature, written in English and Spanish, which include vocabulary review and literature response activities. The high school students prepare for the…

Coryell, Joellen; Gonzales, Edna; Claudia, Cary; Cisneros, Joe

129

Los Alamos National Laboratory Waste Management Program  

Microsoft Academic Search

Los Alamos National Laboratory's (LANL) waste management program is responsible for disposition of waste generated by many of the LANL programs and operations. LANL generates liquid and solid waste that can include radioactive, hazardous, and other constituents. Where practical, LANL hazardous and mixed wastes are disposed through commercial vendors; low-level radioactive waste (LLW) and radioactive asbestos-contaminated waste are disposed on

G. M. Lopez-Escobedo; K. M. Hargis; C. R. Douglass

2007-01-01

130

CALDERÓN'S LOS CABELLOS DE ABSALÓN: A REAPPRAISAL  

Microsoft Academic Search

Calderón's Los cabellos de Absalón, based on the Biblical story of King David and his eldest son Amnon who rapes his half-sister, Thamar, and who is murdered in consequence by her brother Absalom, has generally been acknowledged as a moving tragedy, but no one has yet made a successful attempt to define its tragic character in any detail or to

Gwynne Edwards

1971-01-01

131

Clasificación de los herbicidas  

NSDL National Science Digital Library

Esta lección se enfoca en entender el sistema de clasificación en el cual están organizados los herbicidas. Terminología como clasificación, jerarquía de clasificación, ejemplos de clasificación y un breve resumen de los ocho modos de acción, se discuten en esta lección. Una vez que esto se entiende, es mucho más fácil comprender herbicidas similares y saber por qué estos pueden exhibir ciertos síntomas en malezas y cultivos. Objetivos:Entender la forma en que se clasifican los herbicidas y su importancia en el manejo de la resistencia herbicidaEntender la importancia de la clasificación de los herbicidas por modo de acción, en vez de familiasSer capaz de entender la diferencia entre modo de acción y sitio de acciónSer capaz de diferenciar entre familias de herbicidas, modos de acción, y sitios de acciónEntender nombre común, nombres comerciales y sitios de absorción

132

Proceedings of the Los Alamos Neutrino Workshop.  

National Technical Information Service (NTIS)

A workshop on neutrino physics was held at Los Alamos from June 8 to 12, 1981. The material presented has been provided in part by the organizers, in part by the chairmen of the working sessions. Closing date for contributions was October 1981. (ERA citat...

F. Boehm G. J. Stephenson

1982-01-01

133

Latina Adolescent Childbearing in East Los Angeles.  

ERIC Educational Resources Information Center

|This book is about teenage pregnancy among Latina teenagers in East Los Angeles (California). It focuses on teenage pregnancy and motherhood among economically disadvantaged Latinas aged 17 and under. The young mothers in this study were participants in a series of intervention efforts to prevent repeat pregnancy at a family planning clinic. This…

Erickson, Pamela I.

134

New Management Thrust at Los Rios  

ERIC Educational Resources Information Center

|Describes the management practices adopted by the Los Rios Community College District (California) as a result of the passage of the Jarvis-Gann tax initiative. Alterations included reorganization of upper management structure, full budget disclosures, collective bargaining, merit pay concept for administrative staff, and the creation of a…

Klapstein, Earl L.

1978-01-01

135

Induction inserts at the Los Alamos PSR  

SciTech Connect

Ferrite-loaded induction tuners installed in the Los Alamos Proton Storage Ring have been successful in compensating space-charge effects. However, the resistive part of the ferrite introduces unacceptable microwave instability and severe bunch lengthening. An effective cure was found by heating the ferrite cores up to {approx} 130 C. An understanding of the instability and cure is presented.

King-Yuen Ng

2002-09-30

136

Powering Los Angeles with renewable energy  

NASA Astrophysics Data System (ADS)

The City of Los Angeles is nearly two thirds of the way towards its goal of generating a third of its electricity from renewable sources by 2020; cities around the world can glean valuable technical, economic and political lessons from its experience.

Villaraigosa, Mayor Antonio R.; Sivaram, Varun; Nichols, Ron

2013-09-01

137

Derechos de propiedad intelectual y los OGM  

Microsoft Academic Search

Tradicionalmente los agricultores han accedido a las semillas que usan en sus campos (ya sea porque la compran, la intercambian o la heredan de sus ante- pasados), y las guardan para sus siguientes cose- chas. Por eso es que ha sido difÌcil para las empresas transformarla en una mercancÌa, pues a diferencia de otras productos, la semilla es un ser

Por Elizabeth Bravo

138

Nuclear Forensics at Los Alamos National Laboratory  

SciTech Connect

The overview of this presentation is: (1) Introduction to nonproliferation efforts; (2) Scope of activities at Los Alamos National Laboratory; (3) Facilities for radioanalytical work at LANL; (4) Radiochemical characterization capabilities; and (5) Bulk chemical and materials analysis capabilities. Some conclusions are: (1) Analytical chemistry measurements on plutonium and uranium matrices are critical to numerous defense and non-defense programs including safeguards accountancy verification measurements; (2) Los Alamos National Laboratory operates capable actinide analytical chemistry and material science laboratories suitable for nuclear material forensic characterization; (3) Actinide analytical chemistry uses numerous means to validate and independently verify that measurement data quality objectives are met; and (4) Numerous LANL nuclear facilities support the nuclear material handling, preparation, and analysis capabilities necessary to evaluate samples containing nearly any mass of an actinide (attogram to kilogram levels).

Podlesak, David W [Los Alamos National Laboratory; Steiner, Robert E. [Los Alamos National Laboratory; Burns, Carol J. [Los Alamos National Laboratory; LaMont, Stephen P. [Los Alamos National Laboratory; Tandon, Lav [Los Alamos National Laboratory

2012-08-09

139

Water Supply at Los Alamos during 1997  

SciTech Connect

Production of potable municipal water supplies during 1997 totaled about 1,285.9 million gallons from wells in the Guaje, Pajarito, and Otowi well fields. There was no water used from the spring gallery in Water Canyon or from Guaje Reservoir during 1997. About 2.4 million gallons of water from Los Alamos Reservoir was used to irrigate public parks and recreational lands. The total water usage in 1997 was about 1,288.3 million gallons, or about 135 gallons per day per person living in Los Alamos County. Groundwater pumpage was down about 82.2 million gallons in 1997 compared with the pumpage in 1996. Four new replacement wells were drilled and cased in Guaje Canyon between October 1997 and March 1998. These wells are currently being developed and aquifer tests are being performed. A special report summarizing the geological, geophysical, and well construction logs will be issued in the near future for these new wells.

M. N. Maes; S. G. McLin; W. D. Purtymun

1998-12-01

140

Recent development in pyrochemistry at Los Alamos  

Microsoft Academic Search

Recent developments in pyrochemical processing at Los Alamos include the recovery of plutonium from anodes and impure metal by pyroredox and new molten salt handling and purification techniques. The anode is dissolved in a ZnClâ KCl salt to form PuClâ and a zinc and impurities button. Calcium reduction of the PuClâ yields 95 to 98% pure plutonium. New techniques for

J. A. McNeese; K. W. Fife; J. D. Williams

1984-01-01

141

Los Alamos synchronous orbit data set  

SciTech Connect

Energetic electron (30-15000 keV) and proton 145 keV to 150 MeV) measurements made by Los Alamos National Laboratory sensors at geostationary orbit (6.6 R/sub E/) are summarized. The instrumentation employed and the satellite positions are described. The spacecraft have been variously located, but in their present configuration the Los Alamos satellites designated 1976-059, 1977-007, and 1979-053 are located, respectively, at approx. 70/sup 0/W, approx. 70/sup 0/E, and approx. 135/sup 0/W longitude. Several examples of the high temporal and full three-dimensional spatial measurement capabilities of these instruments are illustrated by examples from the published literature. Discussion is also given for the Los Alamos Synoptic Data Set (SDS) which gives a broad overview of the Los Alamos geostationary orbit measurements. The SDS data are plotted in terms of daily average spectra, 3-hour local time averages, and in a variety of statistical formats. The data summarize conditions from mid-1976 through 1978 (S/C 1976-059) and from early 1977 through 1978 (S/C 1977-007). The SDS compilations presented correspond to measurements at 35/sup 0/W, 70/sup 0/W, and 135/sup 0/W geographic longitude and thus are indicative of conditions at 9/sup 0/, 11/sup 0/, and 4.8/sup 0/ geomagnetic latitude, respectively. The bulk of the SDS report presents data plots which are organized according to Carrington solar rotations and, as such, the data are readily comparable to solar rotation-dependent interplanetary conditions. Potential applications of the Synoptic Data Set (available to all interested users in June 1981) are discussed.

Baker, D.N.; Higbie, P.R.; Belian, R.D.; Hones, E.W.; Klebesadel, R.W.

1981-01-01

142

Neustonic Plastic in the Los Angeles River  

Microsoft Academic Search

The characterization of neustonic plastic found in the Los Angeles River was completed in this study. 3 water samples were collected from the river on April 30, 2011 in Long Beach, CA using a 0.5 mm manta trawl. The plastic was separated from organic material, divided into 3 class sizes (0.5 mm, 1.4 mm, and 2.44 mm), and identified and

Annie M Tran

2012-01-01

143

Amphibians and Reptiles of Los Alamos County  

SciTech Connect

Recent studies have shown that amphibians and reptiles are good indicators of environmental health. They live in terrestrial and aquatic environments and are often the first animals to be affected by environmental change. This publication provides baseline information about amphibians and reptiles that are present on the Pajarito Plateau. Ten years of data collection and observations by researchers at Los Alamos National Laboratory, the University of New Mexico, the New Mexico Department of Game and Fish, and hobbyists are represented.

Teralene S. Foxx; Timothy K. Haarmann; David C. Keller

1999-10-01

144

Los Alamos constant-Q spectrometer  

SciTech Connect

A constant-Q spectrometer, which has been installed on the pulsed source of the Los Alamos Neutron Scattering Center, is described. It features a number of innovations that ease sample and analyser alignment and a novel composite crystal analyzer which exploits the mosaic properties of plastically deformed germanium in a new way. Observations of phonon dispersion in aluminium and of incoherent scattering in ZrH/sub 2/ are reported, along with background measurements. 11 refs., 5 figs., 1 tab.

Robinson, R.A.; Pynn, R.; Eckert, J.; Goldstone, J.A.

1985-01-01

145

The Los Alamos advanced hadron facility  

SciTech Connect

A brief discussion of the plans for the Los Alamos Advanced Hadron Facility (AHF) will be presented. The plans include a 60-GeV proton main ring and two intense lower energy proton beams (1.6 GeV) for a pulsed-neutron source and low duty factor neutrino source. Brief remarks will be made about the physics program and funding status. 10 refs., 3 figs., 6 tabs.

Garvey, G.T.

1989-01-01

146

NIST--Los Alamos racetrack microtron status  

Microsoft Academic Search

The NIST-Los Alamos Racetrack Microtron (RTM) is designed to deliver a low-emittance electron beam of up to 0.5 mA cw over an energy range of 17 MeV to 185 MeV. Fed by a 5 MeV injector, the RTM contains two 180\\/degree\\/ end magnets that recirculate the beam up to 15 times through a 12 MeV RF linac. The linac, which

M. A. Wilson; R. L. Ayres; R. I. Cutler; P. H. Debenham; E. R. Lindstrom; D. L. Mohr; S. Penner; J. E. Rose; L. M. Young

1988-01-01

147

The Los Alamos accelerator code group  

SciTech Connect

The Los Alamos Accelerator Code Group (LAACG) is a national resource for members of the accelerator community who use and/or develop software for the design and analysis of particle accelerators, beam transport systems, light sources, storage rings, and components of these systems. Below the authors describe the LAACG`s activities in high performance computing, maintenance and enhancement of POISSON/SUPERFISH and related codes and the dissemination of information on the INTERNET.

Krawczyk, F.L.; Billen, J.H.; Ryne, R.D.; Takeda, Harunori; Young, L.M.

1995-05-01

148

Critical partnerships: Los Alamos, universities, and industry  

SciTech Connect

Los Alamos National Laboratory, situated 35 miles northwest of Santa Fe, NM, is one of the Department of Energy`s three Defense Programs laboratories. It encompasses 43 square miles, employees approximately 10,000 people, and has a budget of approximately $1.1B in FY97. Los Alamos has a strong post-cold war mission, that of reducing the nuclear danger. But even with that key role in maintaining the nation`s security, Los Alamos views partnerships with universities and industry as critical to its future well being. Why is that? As the federal budget for R&D comes under continued scrutiny and certain reduction, we believe that the triad of science and technology contributors to the national system of R&D must rely on and leverage each others capabilities. For us this means that we will rely on these partners to help us in 5 key ways: We expect that partnerships will help us maintain and enhance our core competencies. In doing so, we will be able to attract the best scientists and engineers. To keep on the cutting edge of research and development, we have found that partnerships maintain the excellence of staff through new and exciting challenges. Additionally, we find that from our university and corporate partners we often learn and incorporate {open_quotes}best practices{close_quotes} in organizational management and operations. Finally, we believe that a strong national system of R&D will ensure and enhance our ability to generate revenues.

Berger, C.L.

1997-04-01

149

Exploration geochemistry: The Los Alamos experience  

SciTech Connect

Los Alamos National Laboratory became actively involved in geochemical exploration in 1975 by conducting a reconnaissance-scale exploration program for uranium as part of the National Uranium Resource Evaluation program. Initially, only uranium and thorium were analyzed. By 1979 Los Alamos was analyzing a multielement suite. The data were presented in histograms and as black and white concentration plots for uranium and thorium only. Data for the remaining elements were presented as hard copy data listings in an appendix to the report. In 1983 Los Alamos began using exploration geochemistry for the purpose of finding economic mineral deposits to help stimulate the economies of underdeveloped countries. Stream-sediment samples were collected on the Caribbean island of St. Lucia and a geochemical atlas of that island was produced. The data were statistically smoothed and presented as computer-generated color plots of each element of the multielement suite. Studies for the US Bureau of Land Management in 1984 consisted of development of techniques for the integration of several large data sets, which could then be used for computer-assisted mineral resource assessments. A supervised classification technique was developed which compares the attributes of grid cells containing mines or mineral occurrences with attributes of unclassified cells not known to contain mines or occurrences. Color maps indicate how closely unclassified cells match in attributes the cells with mines or occurrences. 20 refs., 1 fig., 1 tab.

Maassen, L.W.; Bolivar, S.L.

1989-01-01

150

Los Angeles County Poor Farm, Patient Ward Nos. 210 & ...  

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

Los Angeles County Poor Farm, Patient Ward Nos. 210 & 211 - Type B Plan, 7601 Imperial Highway; bounded by Esperanza Street, Laurel Street, Flores Street, and Descanso Street, Downey, Los Angeles County, CA

151

Los Angeles County Poor Farm, Patient Wards 201, 202, 203, ...  

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

Los Angeles County Poor Farm, Patient Wards 201, 202, 203, 204, 205, 206, 207, 208 & 209 - Type A Plan, 7601 Imperial Highway; bounded by Esperanza Street, Hawthorn Avenue, Laurel Street, and Descanso Street, Downey, Los Angeles County, CA

152

Los Alamos Personnel and Area Criticality Dosimeter Systems.  

National Technical Information Service (NTIS)

Fissionable materials are handled and processed at the Los Alamos National Laboratory. Although the probability of a nuclear criticality accident is very remote, it must be considered. Los Alamos maintains a broad spectrum of dose assessment capabilities....

D. G. Vasilik R. W. Martin

1981-01-01

153

El problema de estabilidad de los sistemas Hamiltonianos multidimensionales  

NASA Astrophysics Data System (ADS)

Se revisarán los aspectos básicos del problema de estabilidad de sistemans Hamiltonianos N-dimensionales, haciendo especial énfasis en los posibles mecanismos que dan lugar a la aparición de ``caos": overlap de resonancias, difusión de Arnol'd y otros procesos difusivos alternativos. Se mencionarán los aspectos aún no resueltos sobre la estabilidad de los sistemas con N > 2. Finalmente, se discutirá cuáles de estos mecanismos podrían tener alguna relevancia en la dinámica de sistemas estelares y planetarios.

Cincotta, P. M.

154

Decommissioning the Los Alamos Molten Plutonium Reactor Experiment (LAMPRE I).  

National Technical Information Service (NTIS)

The Los Alamos Molten Plutonium Reactor Experiment (LAMPRE I) was decommissioned at the Los Alamos National Laboratory, Los Alamos, New Mexico, in 1980. The LAMPRE I was a sodium-cooled reactor built to develop plutonium fuels for fast breeder application...

J. R. Harper R. Garde

1981-01-01

155

Decommissioning the Los Alamos Molten Plutonium Reactor Experiment (LAMPRE I)  

Microsoft Academic Search

The Los Alamos Molten Plutonium Reactor Experiment (LAMPRE I) was decommissioned at the Los Alamos National Laboratory, Los Alamos, New Mexico, in 1980. The LAMPRE I was a sodium-cooled reactor built to develop plutonium fuels for fast breeder applications. It was retired in the mid-1960s. This report describes the decommissioning procedures, the health physics programs, the waste management, and the

J. R. Harper; R. Garde

1981-01-01

156

Los Alamos National Laboratory passive solar program  

SciTech Connect

Progress in passive solar tasks performed at the Los Alamos National Laboratory for FY-81 is documented. A third volume of the Passive Solar Design Handbook is nearly complete. Twenty-eight configurations of sunspaces were studied using the solar load ratio method of predicting performance; the configuration showing best performance is discussed. The minimum level of insolation needed to generate convective flow in the thermosiphon test rig is noted and measured. Information is also included on test room performance, off-peak auxiliary electric heating for a passive home, free convection experiment, monitored buildings, and technical support to the US Department of Energy.

Neeper, D.A.

1981-01-01

157

The Los Alamos foil implosion project  

SciTech Connect

The goal of the Los Alamos foil implosion project is to produce an intense (>100 TW), multi-megajoule, laboratory soft x-ray source for material studies and fusion experiments. The concept involves the implosion of annular, current-carrying, cylindrical metallic plasmas via their self-magnetic forces. The project features inductive storage systems using both capacitor banks and high explosive-driven flux compression generators as prime energy sources. Fast opening switches are employed to shorten the electrical pulses. The program will be described and activities to date will be summarized.

Brownell, J.H.; Parker, J.V.; Bartsch, R.R.; Benage, J.F.; Bowers, R.L.; Cochrane, J.C.; Forman, P.R.; Goforth, J.H.; Greene, A.E.; Kruse, H.W.; Ladish, J.S; Oona, H.; Peterson, D.L.; Reinvosky, R.E.; Trainor, J.R. (Los Alamos National Lab., NM (United States)); Roderick, N. (New Mexico Univ., Albuquerque, NM (United States)); Turchi, P. (Ohio State Univ., Columbus, OH (United States))

1992-01-01

158

The Los Alamos foil implosion project  

SciTech Connect

The goal of the Los Alamos foil implosion project is to produce an intense (>100 TW), multi-megajoule, laboratory soft x-ray source for material studies and fusion experiments. The concept involves the implosion of annular, current-carrying, cylindrical metallic plasmas via their self-magnetic forces. The project features inductive storage systems using both capacitor banks and high explosive-driven flux compression generators as prime energy sources. Fast opening switches are employed to shorten the electrical pulses. The program will be described and activities to date will be summarized.

Brownell, J.H.; Parker, J.V.; Bartsch, R.R.; Benage, J.F.; Bowers, R.L.; Cochrane, J.C.; Forman, P.R.; Goforth, J.H.; Greene, A.E.; Kruse, H.W.; Ladish, J.S; Oona, H.; Peterson, D.L.; Reinvosky, R.E.; Trainor, J.R. [Los Alamos National Lab., NM (United States); Roderick, N. [New Mexico Univ., Albuquerque, NM (United States); Turchi, P. [Ohio State Univ., Columbus, OH (United States)

1992-08-01

159

Fluctuations in three Los Alamos experiments  

SciTech Connect

We review results from three magnetic fusion experiments at Los Alamos: the ZT-40M, a reversed-field toroidal pinch; the CTX, a spheromak produced by a magnetized coaxial source; and the FRX-C, a field-reversed configuration generated by theta-pinch techniques. These experiments share the common feature that a major fraction of the confining magnetic field is associated with currents carried by the plasma. We emphasize here the important role that fluctuations play in the maintenance and evolution of these configurations.

Wright, B.L.

1983-01-01

160

Optics code development at Los Alamos  

SciTech Connect

This paper is an overview of part of the beam optics code development effort in the Accelerator Technology Division at Los Alamos National Laboratory. The aim of this effort is to improve our capability to design advanced beam optics systems. The work reported is being carried out by a collaboration of permanent staff members, visiting consultants, and student research assistants. The main components of the effort are building a new framework of common supporting utilities and software tools to facilitate further development. research and development on basic computational techniques in classical mechanics and electrodynamics, and evaluation and comparison of existing beam optics codes, and support for their continuing development.

Mottershead, C.T.; Lysenko, W.P.

1988-12-01

161

Los Alamos National Laboratory computer benchmarking 1982  

SciTech Connect

Evaluating the performance of computing machinery is a continual effort of the Computer Research and Applications Group of the Los Alamos National Laboratory. This report summarizes the results of the group's benchmarking activities performed between October 1981 and September 1982, presenting compilation and execution times as well as megaflop rates for a set of benchmark codes. Tests were performed on the following computers: Cray Research, Inc. (CRI) Cray-1S; Control Data Corporation (CDC) 7600, 6600, Cyber 73, Cyber 825, Cyber 835, Cyber 855, and Cyber 205; Digital Equipment Corporation (DEC) VAX 11/780 and VAX 11/782; and Apollo Computer, Inc., Apollo.

Martin, J.L.

1983-06-01

162

Ultraprecision machining of optics at Los Alamos  

SciTech Connect

Ultraprecision machine tools are used at Los Alamos for single point diamond turning of optics and other precision parts. Measurements of a 50-mm-dia copper flat are used to illustrate the quality of a part which can be machined on the Moore No. 3 lathe. Measurements of a 0.4-m-dia aluminum mirror with a 20-m radius-of-curvature are presented as an example of a part machined on the Moore No. 5 lathe. A varying frequency sine wave grating is used to show a type of special optical grating which can be produced using the Pneumo lathe.

Rhorer, R.L.; Gauler, A.L.; Colston, E.W.; Ruhe, J.R.

1981-01-01

163

Los Alamos free-electron laser  

SciTech Connect

During the past year the Los Alamos free-electron laser (FEL) oscillator has demonstrated high peak and average power (10 MW and 6 kW), broad-wavelength tunability (9 to 35 ..mu..m), and near-ideal optical quality (0.9 Strehl ratio). An electron energy-extraction efficiency of 1% was measured. The predicted production of synchrotron sidebands also was observed in the broadened optical spectrum. As shorter wavelengths and higher powers are pursued, higher currents with improved beam quality will be required. Advanced injectors and energy-recovery systems are being developed to meet these demands. 17 refs., 6 figs., 3 tabs.

Watson, J.M.

1985-01-01

164

Materials accounting at Los Alamos National Laboratory  

SciTech Connect

The materials accounting system at Los Alamos has evolved from an ''80-column'' card system to a very sophisticated near-real-time computerized nuclear material accountability and safeguards system (MASS). The present hardware was designed and acquired in the late 70's and is scheduled for a major upgrade in fiscal year 1986. The history of the system from 1950 through the DYMAC of the late 70's up to the present will be discussed. The philosophy of the system along with the details of the system will be covered. This system has addressed the integrated problems of management, control, and accounting of nuclear material successfully. 8 refs., 3 figs., 1 tab.

Roberts, N.J.; Erkkila, B.H.; Kelso, H.F.

1985-07-20

165

Environmental Programs at Los Alamos National Laboratory  

SciTech Connect

Summary of this project is: (1) Teamwork, partnering to meet goals - (a) Building on cleanup successes, (b) Solving legacy waste problems, (c) Protecting the area's environment; (2) Strong performance over the past three years - (a) Credibility from four successful Recovery Act Projects, (b) Met all Consent Order milestones, (c) Successful ramp-up of TRU program; (3) Partnership between the National Nuclear Security Administration's Los Alamos Site Office, DOE Carlsbad Field Office, New Mexico Environment Department, and contractor staff enables unprecedented cleanup progress; (4) Continued focus on protecting water resources; and (5) All consent order commitments delivered on time or ahead of schedule.

Jones, Patricia [Los Alamos National Laboratory

2012-07-11

166

Experience with confirmation measurement at Los Alamos  

SciTech Connect

Confirmation measurements are used at Los Alamos in support of incoming and outgoing shipment accountibility and for support of both at /sup 235/U and Pu inventories. Statistical data are presented to show the consistency of measurements on items of identical composition and on items measured at two facilitis using similar instruments. A description of confirmation measurement techniques used in support of /sup 235/U and Pu inventories and a discussion on the ability of the measurements to identify items with misstated SNM are given.

Marshall, R.S.; Wagner, R.P.; Hsue, F.

1985-01-01

167

Los efectos de la estructura monopolística de los mercados en la evaluación de las empresas privatizadas en Colombia  

Microsoft Academic Search

Este estudio pretende evaluar si las empresas que fueron privatizadas en Colombia durante los años noventa mejoraron sustancialmente su productividad y rentabilidad, como consecuencia de los cambios gerenciales que se debieron dar, o si por el contrario, continuaron en niveles similares, contrariando la hipótesis de que los nuevos dueños propiciarían cambios sustanciales en su estrategia, como lo demuestra la experiencia

Jaime Andrés Collazos R; Héctor Ochoa D

2005-01-01

168

Los Alamos National Laboratory Waste Management Program  

SciTech Connect

Los Alamos National Laboratory's (LANL) waste management program is responsible for disposition of waste generated by many of the LANL programs and operations. LANL generates liquid and solid waste that can include radioactive, hazardous, and other constituents. Where practical, LANL hazardous and mixed wastes are disposed through commercial vendors; low-level radioactive waste (LLW) and radioactive asbestos-contaminated waste are disposed on site at LANL's Area G disposal cells, transuranic (TRU) waste is disposed at the Waste Isolation Pilot Plant (WIPP), and high-activity mixed wastes are disposed at the Nevada Test Site (NTS) after treatment by commercial vendors. An on-site radioactive liquid waste treatment facility (RLWTF) removes the radioactive constituents from liquid wastes and treated water is released through an NPDES permitted outfall. LANL has a very successful waste minimization program. Routine hazardous waste generation has been reduced over 90% since 1993. LANL has a DOE Order 450.1-compliant environmental management system (EMS) that is ISO 14001 certified; waste minimization is integral to setting annual EMS improvement objectives. Looking forward, under the new LANL management and operating contractor, Los Alamos National Security (LANS) LLC, a Zero Liquid Discharge initiative is being planned that should eliminate flow to the RLWTF NPDES-permitted outfall. The new contractor is also taking action to reduce the number of permitted waste storage areas, to charge generating programs directly for the cost to disposition waste, and to simplify/streamline the waste system. (authors)

Lopez-Escobedo, G.M.; Hargis, K.M.; Douglass, C.R. [Los Alamos National Laboratory, NM (United States)

2007-07-01

169

A Vadose Zone Flow and Transport Model for Los Alamos Canyon, Los Alamos, New Mexico  

Microsoft Academic Search

To gain an integrated understanding of flow and trans- port in the vadose zone and its role in transmitting con- A vadose zone flow and transport model for Los Alamos Canyon tamination to the regional aquifer, conceptual flow and is presented that demonstrates that a comprehensive understanding transport models must be combined with site-specific of vadose zone hydrologic processes can

Bruce A. Robinson; Gregory Cole; James W. Carey; Marc Witkowski; Carl W. Gable; Zhiming Lu; Robert Gray

2005-01-01

170

"Los Ninos y los Libros": Noteworthy Books in Spanish for the Very Young.  

ERIC Educational Resources Information Center

Reviews 15 children's books in Spanish. Titles reviewed include: "Perro y gato [Dog and Cat]" (Ricardo Alcantara); "Baldomero va a la escuela [Baldomero goes to School]" (Alain Broutin); "Duerme bien, pequeno oso [Sleep well, Little Bear]" (Quint Buchholz); "El mas bonito de todos los regales del mundo [The Most Beautiful Gift in the World]…

Schon, Isabel

2001-01-01

171

LAMPF II workshop, Los Alamos National Laboratory, Los Alamos, New Mexico, February 1-4, 1982  

SciTech Connect

This report contains the proceedings of the first LAMPF II Workshop held at Los Alamos February 1 to 4, 1982. Included are the talks that were available in written form. The conclusion of the participants was that there are many exciting areas of physics that will be addressed by such a machine.

Thiessen, H.A. (comp.)

1982-01-01

172

Biological assessment for the effluent reduction program, Los Alamos National Laboratory, Los Alamos, New Mexico  

SciTech Connect

This report describes the biological assessment for the effluent recution program proposed to occur within the boundaries of Los Alamos National Laboratory. Potential effects on wetland plants and on threatened and endangered species are discussed, along with a detailed description of the individual outfalls resulting from the effluent reduction program.

Cross, S.P.

1996-08-01

173

Los Angeles-Long Beach Harbor Areas Cultural Resource Survey, Los Angeles County, California.  

National Technical Information Service (NTIS)

The purpose of the survey was to locate and identify cultural resources at the Los Angeles and Long Beach Harbors that might ultimately be affected by a project. The report is comprised of historical and archeological overviews of the project area, an ide...

E. G. Stickel L. J. Weinman

1978-01-01

174

Los Angeles: A tale of two stones  

NASA Astrophysics Data System (ADS)

We compare and contrast the mineralogy and petrology of the 2 stones of the extremely ferroan and Cr-poor martian meteorite, Los Angeles. The 2 stones are similar in many characteristics, strongly suggesting that they originated from a single flow or shallow intrusion. However, stone 2 is more ferroan and enriched in late-stage materials than its larger, and more widely studied, sibling. Stone 2 has a far higher abundance (~25 vol%) than stone 1 (10 vol%) of combined "opaques," meaning not only conventional opaque minerals but also, and more abundantly, fine-grained symplectitic intergrowths of fayalite + ferroan augite + silica (interpreted as pyroxferroite breakdown material, PBM). The bulk composition of the PBM is close to that of stoichiometric pyroxferroite, with roughly 45 wt% FeO. Extensive zonation within the pyroxenes of both stones is consistent with origin by closed-system fractional crystallization of the parent basaltic melt(s). However, the compositional and modal disparity between the two stones suggests that they formed in an environment where at least mild multi-cm-scale differentiation occurred. Probably, in both stones, crystallization began from similar melts with mg ~27-28 mol%, but during crystallization, significant migration of the melt component occurred, perhaps by crystal settling and/or filter pressing. Stone 2 acquired an enhanced proportion of residual melt and, thus, higher proportions of late-stage materials such as PBM, oxides, and phosphates. Within the PBM, clinopyroxene poikiloblastically encloses fayalite and silica. At least some of the PBM had already formed by decomposition of pyroxferroite before the major shock that caused the very scarce brecciation within Los Angeles. However, the low abundance of fractures within PBM, in comparison to pyroxene and some other minerals, may be an indication that the textures of PBM regions typically did not assume their final detailed configuration until after the last major shock. The steep slope of a pyroxene mg-Cr correlation suggests that igneous crystallization occurred at higher fO2 in Los Angeles than in otherwise similar shergottites such as QUE 94201, Shergotty, and Zagami.

Warren, Paul H.; Greenwood, James P.; Rubin, Alan E.

2004-01-01

175

Los Alamos test-room results  

SciTech Connect

Fourteen Los Alamos test rooms have been operated for several years; this paper covers operation during the winters of 1980-81 and 1981-82. Extensive data have been taken and computer analyzed to determine performance parameters such as efficiency, solar savings fraction, and comfort index. The rooms are directly comparable because each has the same net coefficient and solar collection area and thus the same load collector ratio. Configurations include direct gain, unvented Trombe walls, water walls, phase change walls, and two sunspace geometries. Strategies for reducing heat loss include selective surfaces, two brands of superglazing windows, a heat pipe system, and convection-suppression baffles. Significant differences in both backup heat and comfort are observed among the various rooms. The results are useful, not only for direct room-to-room comparisons, but also to provide data for validation of computer simulation programs.

McFarland, R.D.; Balcomb, J.D.

1982-01-01

176

Prediction and synthesis efforts at Los Alamos  

SciTech Connect

One important aspect of an organic synthesis effort related to the development of new explosives, is the ability to estimate the properties of proposed molecules. In most cases, the detonation velocity and C-J pressure are estimated for the proposed explosive using any number of existing predictive methods. Novel explosives are being proposed, at Los Alamos and elsewhere, that are qualitatively different in their molecular makeup than most of the existing conventional ones. These explosives include, highly strained cage molecules, heterocyclic molecules, low hydrogen-containing molecules, and high nitrogen-containing molecules. This paper describes alternate ways of viewing detonation velocities and a new method for estimating detonation velocity of a proposed compound. 10 refs., 2 figs., 4 tabs.

Stine, J.R.; Coburn, M.D.

1988-01-01

177

The Los Alamos FEL photoinjector drive laser  

SciTech Connect

The drive laser system of the photoelectric injector for the Los Alamos free -- electron laser (FEL) is described. the bright electron beams required for high performance FELs demand stringnt specifications on drive laser output levels, beam quality, and stability. The laser system generates 7--15 ps (FWHM) Gaussian pulses of 527 nm light at a repetition rate of 21.67 MHz. These micropulses'' are contained within a < 200 microsec long macropulse'' envelope which is emitted from the drive laser at a 1 Hz rate. Micropulse energies as large as 12 microjoules are obtained. The design specifications, laser architecture, and operating performance following the most recent round of upgrades are presented. 10 refs., 15 figs., 1 tab.

Early, J.; Barton, J.; Busch, G.; Wenzel, R.; Remelius, D.

1991-01-01

178

Information about Practicums at Los Alamos  

SciTech Connect

The Los Alamos Neutron Science Center is the premier facility for neutron science experiments ranging from cross section measurements, neutron scattering experiments, proton radiography, cold neutrons, actinide neutronic properties, and many other exciting topics. The National High Magnetic Field Laboratory is home to several powerful magnets, including the one that created the first non-destructive 100 Tesla field in March 2012. They probe the electronic structure of superconductors, magnetic properties of materials (including magneto-quantum effects). Research is also conducted in correlated materials, thermoacoustics, and magnetic properties of actinides. The Trident Laser has a unique niche with very high power, short pulse experiments, with a peak power of 10{sup 20} W in short pulse mode. Discoveries range from production of monoenergetic MeV ion beam, nonlinear kinetic plasma waves, the transition between kinetic and fluid nonlinear behavior and other laser-plasma interaction processes.

Bradley, Paul A. [Los Alamos National Laboratory

2012-07-24

179

Los Alamos controlled-air incineration studies  

SciTech Connect

Current regulations of the Environmental Protection Agency (EPA) require that PCBs in concentrations greater than 500 ppM be disposed of in EPA-permitted incinerators. Four commercial incineration systems in the United States have EPA operating permits for receiving and disposing of concentrated PCBs, but none can accept PCBs contaminated with nuclear materials. The first section of this report presents an overview of an EPA-sponsored program for studying PCB destruction in the large-scale Los Alamos controlled-air incinerator. A second major FY 1983 program, sponsored by the Naval Weapons Support Center, Crane, Indiana, is designed to determine operating conditions that will destroy marker smoke compounds without also forming polycyclic aromatic hydrocarbons (PAHs), some of which are known or suspected to be carcinogenic. We discuss the results of preliminary trial burns in which various equipment and feed formulations were tested. We present qualitative analyses for PAHs in the incinerator offgas as a result of these tests.

Koenig, R.A.; Warner, C.L.

1983-01-01

180

Performance of the Los Alamos expanding telescope  

NASA Astrophysics Data System (ADS)

An expanding telescope can produce a very low divergence particle beam, provided that the beam optics have sufficient quality in order not to introduce large aberrations. Even as late as two years ago there were no theoretical beamline codes, and little experimental work that could describe the third-order aberrations introduced by an expanding telescope. A project was undertaken at Los Alamos National Laboratory to perform these calculations, and to build a telescope to confirm the predictions. It was installed at Argonne National Laboratory during the summer of 1987 and tested in a 50 MeV H(-) beam. The telescope consisted of a singlet eyepiece and triplet objective lens with a twenty times magnification. It performed to the design specifications of twenty-five micro-radians beam divergence with a parallel beam focus. The measured geometric aberrations were found to be in agreement with the computer calculations.

Dombeck, T. W.

181

Environmental surveillance at Los Alamos during 1995  

SciTech Connect

This report describes the environmental surveillance program at Los Alamos National Laboratory (LANL or the Laboratory) during 1995. The Laboratory routinely monitors for radiation and for radioactive and nonradioactive materials at (or on) Laboratory sites as well as in the surrounding region. LANL uses the monitoring result to determine compliance with appropriate standards and to identify potentially undesirable trends. Data were collected in 1995 to assess external penetrating radiation; quantities of airborne emissions and liquid effluents; concentrations of chemicals and radionuclides in ambient air, surface waters and groundwaters, municipal water supply, soils and sediments, and foodstuffs; and environmental compliance. Using comparisons with standards, regulations, and background levels, this report concludes that environmental effects from Laboratory operations are small and do not pose a demonstrable threat to the public, Laboratory employees, or the environment.

NONE

1996-10-01

182

Recent development in pyrochemistry at Los Alamos  

SciTech Connect

Recent developments in pyrochemical processing at Los Alamos include the recovery of plutonium from anodes and impure metal by pyroredox and new molten salt handling and purification techniques. The anode is dissolved in a ZnCl/sub 2/ KCl salt to form PuCl/sub 3/ and a zinc and impurities button. Calcium reduction of the PuCl/sub 3/ yields 95 to 98% pure plutonium. New techniques for transferring molten salt from a purification or regeneration vessel to molds has been successfully developed and demonstrated. Additional salt work involving recycle of direct oxide reduction salts using anhydrous hydrogen chloride, phosgene, and chlorine gases is under way. 13 figures, 1 table.

McNeese, J.A.; Fife, K.W.; Williams, J.D.

1984-01-01

183

Los Alamos free electron laser: accelerator performance  

SciTech Connect

The Los Alamos free electron (FEL) laser oscillator has successfully operated over a wavelength range from 9 to 11 ..mu..m with a peak output power of 5 MW and an average output power of 6 kW over a 70-..mu..s pulse length. The FEL is driven by a conventional rf linear accelerator operating at 1.3 GHz with a nominal energy of 20 MeV. Particularly important parts of the beamline are the electron gun, the subharmonic and fundamental-bunching systems, the accelerator, the feedback controllers, the steering and focusing systems, the Cherenkov radiators used as beam-position monitors, and the slow and fast deflectors used with the diagnostic spectrometer at the exit of the beamline. We will discuss problems and present the performance of these components. 10 references, 12 figures, 2 tables.

Warren, R.W.; Stein, W.E.; Lynch, M.T.; Sheffield, R.L.; Fraser, J.S.

1984-01-01

184

The Los Alamos Intense Neutron Source  

SciTech Connect

The Intense Neutron Source (INS) is an Inertial Electrostatic Confinement (IEC) fusion device presently under construction at Los Alamos National Laboratory. It is designed to produce 10{sup 11} neutrons per second steady-state using D-T fuel. Phase 1 operation of this device will be as a standard three grid IEC ion focus device. Expected performance has been predicted by scaling from a previous IEC device. Phase 2 operation of this device will utilize a new operating scheme, the Periodically Oscillating Plasma Sphere (POPS). This scheme is related to both the Spherical Reflect Diode and the Oscillating Penning Trap. With this type of operation the authors hope to improve plasma neutron production to about 10{sup 13} neutrons/second.

Nebel, R.A.; Barnes, D.C.; Bollman, R.; Eden, G.; Morrison, L.; Pickrell, M.M.; Reass, W.

1997-10-01

185

Polvo en la Región de los Troyanos  

NASA Astrophysics Data System (ADS)

La posible existencia de un anillo de polvo en la resonancia 1:1 con Júpiter formado por partículas provenientes de colisiones de asteroides fue propuesta por Liou and Zook (Icarus 113, 403, 1995) y estudiada extensamente por Vieira Martins and Gomes (VIII Reunión Regional Latinoamericana de Astronomía, Montevideo,1995). Si bien las partículas quedarían atrapadas sólo por períodos de algunos miles de años, el proceso colisional continuo en el cinturón de asteroides mantendría constante la densidad, presentándose una mayor concentración en la región de los troyanos. En el presente trabajo se presentan resultados preliminares sobre observaciones polarimétricas realizadas desde CASLEO de la región de L5 que confirmarían la existencia y variaciones de densidad en el anillo de polvo.

Gilhutton, R.; Brunini, A.; Coldwell, G.

186

Environmental surveillance at Los Alamos during 1987  

SciTech Connect

This report describes the environmental surveillance program conducted by Los Alamos National Laboratory during 1987. Routine monitoring for radiation and radioactive or chemical materials is conducted on the Laboratory site as well as in the surrounding region. Monitoring results are used to determine compliance with appropriate standards and to permit early identification of potentially undesirable trends. Results and interpretation of data for 1987 cover: external penetrating radiation; quantities of airborne emissions and liquid effluents; concentrations of chemicals and radionuclides in ambient air, surface and ground waters, municipal water supply, soils and sediments, and foodstuffs; and environmental compliance. Comparisons with appropriate standards, regulations, and background levels provide the basis for concluding that environmental effects from Laboratory operations are insignificant and do not pose a threat to the public, Laboratory employees, or the environment. 113 refs., 33 figs., 120 tabs.

Not Available

1988-05-01

187

Performance of the Los Alamos expanding telescope  

SciTech Connect

An expanding telescope can produce a very low divergence particle beam, provided that the beam optics have sufficient quality in order not to introduce large aberrations. Even as late as two years ago there were no theoretical beamline codes, and little experimental work that could describe the third-order aberrations introduced by an expanding telescope. A project was undertaken at Los Alamos National Laboratory to perform these calculations, and to build a telescope to confirm the predictions. It was installed at Argonne National Laboratory during the summer of 1987 and tested in a 50 MeV H/sup /-// beam. The telescope consisted of a singlet eyepiece and triplet objective lens with a twenty times magnification. It performed to the design specifications of twenty-five micro-radians beam divergence with a parallel beam focus. The measured geometric aberrations were found to be in agreement with the computer calculations.

Dombeck, T.W.

1988-01-01

188

Los Alamos Plutonium Facility Waste Management System  

SciTech Connect

This paper describes the new computer-based transuranic (TRU) Waste Management System (WMS) being implemented at the Plutonium Facility at Los Alamos National Laboratory (LANL). The Waste Management System is a distributed computer processing system stored in a Sybase database and accessed by a graphical user interface (GUI) written in Omnis7. It resides on the local area network at the Plutonium Facility and is accessible by authorized TRU waste originators, count room personnel, radiation protection technicians (RPTs), quality assurance personnel, and waste management personnel for data input and verification. Future goals include bringing outside groups like the LANL Waste Management Facility on-line to participate in this streamlined system. The WMS is changing the TRU paper trail into a computer trail, saving time and eliminating errors and inconsistencies in the process.

Smith, K.; Montoya, A.; Wieneke, R.; Wulff, D.; Smith, C.; Gruetzmacher, K.

1997-02-01

189

Security Lapses Continue at Los Alamos  

NSDL National Science Digital Library

Despite Energy Secretary Bill Richardson's previous assertions that security at the Los Alamos National Laboratory had been improved, the Laboratory revealed on June 12 that two hard drives which contain "encyclopedic" amounts of information about Russian and Chinese nuclear weapon design, as well as weapons of American allies, had been missing since May 7, the day before the lab was evacuated because of the wildfire. The Lab Director and Energy Department officials, however, were not informed until May 31. Despite the sensitivity of the information on the drives, they were not classified at the highest level, and the vault where they were stored is accessible to apparently dozens of employees, none of whom are required to log in or log out. Without these records, there is no way of knowing whether the drives went missing the day the loss was discovered or at some point in the previous weeks. Richardson, who failed to appear at a Senate Intelligence Committee hearing on Wednesday, has placed six laboratory managers, including the head of the nuclear weapons programs, on paid leave. He also asked two highly respected former members of Congress, Howard Baker and Lee Hamilton, to conduct an independent investigation and recommend security improvements. In a related development, the Senate voted 97-0 to confirm Air Force Gen. John Gordon, the deputy director of the CIA, to take on a new post of security czar at the Department of Energy. In the meantime, the investigation continues at Los Alamos, where FBI agents plan to give polygraph tests to scientists who had access to the vault.

De Nie, Michael W.

190

DETERMINISTIC TRANSPORT METHODS AND CODES AT LOS ALAMOS  

SciTech Connect

The purposes of this paper are to: Present a brief history of deterministic transport methods development at Los Alamos National Laboratory from the 1950's to the present; Discuss the current status and capabilities of deterministic transport codes at Los Alamos; and Discuss future transport needs and possible future research directions. Our discussion of methods research necessarily includes only a small fraction of the total research actually done. The works that have been included represent a very subjective choice on the part of the author that was strongly influenced by his personal knowledge and experience. The remainder of this paper is organized in four sections: the first relates to deterministic methods research performed at Los Alamos, the second relates to production codes developed at Los Alamos, the third relates to the current status of transport codes at Los Alamos, and the fourth relates to future research directions at Los Alamos.

J. E. MOREL

1999-06-01

191

Lecturas sobre Locke: Los dilemas de la propiedady la libertad  

Microsoft Academic Search

This presentation is part of the Conceptions of Autonomy track.\\u000aEste trabajo interroga por los sentidos del argumento según el cual la primera propiedad de un individuo es su cuerpo a la luz de los debates feministas del presente. Interroga también por las transformaciones que las condiciones históricas, sociales y los horizontes de comprensión marcados por las lenguas y las

Alejandra Ciriza

2010-01-01

192

Sima de los Huesos (Sierra de Atapuerca, Spain). The site  

Microsoft Academic Search

In this article a topographical description of the Cueva Mayor–Cueva de Silo cave system is provided, including a more detailed topography of the Sala de los C??clopes–Sala de las Oseras–Sima de los Huesos sector. The history of the excavations and discoveries of human and carnivore fossils in Sima de los Huesos and adjacent passages is briefly reported, as well as

J. L. Arsuaga; I. Mart??nez; A. Gracia; J. M. Carretero; C. Lorenzo; N. Garc??a; A. I. Ortega

1997-01-01

193

Patrones de migración México-Estados Unidos en los noventa: Datos de cuatro encuestas mexicanas  

Microsoft Academic Search

Este artículo analiza los patrones de migración internacional de los mexicanos, con destino a Estados Unidos, en los noventa, a partir de los datos que arrojan cuatro encuestas mexicanas. Este artículo se insiere en una discusión reciente en la literatura de migraciones sobre los supuestos cambios estructurales del patrón migratorio procedente de México y con destino a los Estados Unidos.

Cristóbal Mendoza

194

Los sistemas financieros a través de la teoría algebraica de autómatas  

Microsoft Academic Search

En este artículo se describen los sistemas financieros como familias de leyes financieras indizadas en el conjunto de los números enteros positivos, utilizando como herramienta el concepto algebráico de autómata. Se introducen dos tipos de sistemas financieros: los sistemas simplemente compuestos, que son una generalización de los sistemas simplemente multiplicativos, y los sistemas simplemente sumativos que también generalizan los sistemas

Salvador Cruz Rambaud

1995-01-01

195

Power evaluation of the Los Angeles oxygen-fed ozone system. [LOS ANGELES  

Microsoft Academic Search

The Los Angeles Department of Water and Power (LADWP) operates a 600 mgd (2,270 ML\\/day) direct filtration water treatment plant which includes a 7,900 lb\\/day (149 kg\\/hr) ozonation system. Ozone is applied as a preoxidant for the purposes of disinfection and microflocculation. The ozonation system is unique in that high purity oxygen is generated on-site and is used as the

K. L. Rakness; G. F. Stolarik

2009-01-01

196

Environmental analysis of Lower Pueblo/Lower Los Alamos Canyon, Los Alamos, New Mexico  

SciTech Connect

The radiological survey of the former radioactive waste treatment plant site (TA-45), Acid Canyon, Pueblo Canyon, and Los Alamos Canyon found residual contamination at the site itself and in the channel and banks of Acid, Pueblo, and lower Los Alamos Canyons all the way to the Rio Grande. The largest reservoir of residual radioactivity is in lower Pueblo Canyon, which is on DOE property. However, residual radioactivity does not exceed proposed cleanup criteria in either lower Pueblo or lower Los Alamos Canyons. The three alternatives proposed are (1) to take no action, (2) to construct a sediment trap in lower Pueblo Canyon to prevent further transport of residual radioactivity onto San Ildefonso Indian Pueblo land, and (3) to clean the residual radioactivity from the canyon system. Alternative 2, to cleanup the canyon system, is rejected as a viable alternative. Thousands of truckloads of sediment would have to be removed and disposed of, and this effort is unwarranted by the low levels of contamination present. Residual radioactivity levels, under either present conditions or projected future conditions, will not result in significant radiation doses to persons exposed. Modeling efforts show that future transport activity will not result in any residual radioactivity concentrations higher than those already existing. Thus, although construction of a sediment trap in lower Pueblo Canyon is a viable alternative, this effort also is unwarranted, and the no-action alternative is the preferred alternative.

Ferenbaugh, R.W.; Buhl, T.E.; Stoker, A.K.; Becker, N.M.; Rodgers, J.C.; Hansen, W.R.

1994-12-01

197

Los Angeles: Past, Present, & Future  

NSDL National Science Digital Library

One of the most unique and famous cities in this country, Los Angeles (LA) has an invigorating persona that attracts people from all over the world. For this reason, its media images and portrayals are ubiquitous and incessant. However, LA, also known as the "Queen of the Angels", is much more than what one sees on the evening news or views on the movie screen. It is a lively city drenched in art and ethnic culture, with a rich past, an exciting present, and a promising future. The basis for this Web site was started in 1996 by the late Dennis Thomison, a Reference Librarian at the University of Southern California, and is now maintained by members of USC's Information Services Division. This online collection utilizes the extensive archival resources available at the University of Southern California and takes viewers on a journey that explores various dynamics of LA's past, present, and future. Each category provides Internet links that opens a window into the world of LA and offers users the opportunity to broaden their horizons regarding LA's diversity and richness. Viewers have access to information such as LA's discovery and settlement, its historical cemeteries, images, and personalities, as well as ideas and visions of what the future may hold for the city. Current LA residents, as well as those looking to one day visit or relocate to the area, may want to bookmark this site.

Thomison, Dennis, 1937-

1996-01-01

198

Epidemiology of pancreas cancer in Los Angeles  

SciTech Connect

The characteristics of the 3614 Los Angeles County residents in whom cancer of the exocrine pancreas was diagnosed during the period 1972-1977 were compared with those of all county residents and patients in whom any cancer was diagnosed during the same period. Seventy-nine percent of the diagnoses had been pathologically verified. This disease still preferentially afflicts the old, the black, and men, although the differences in risk with factors other than age are modest. The disease is not evenly distributed by social class, or over time, although it is not clear that the observed differences reflect etiology. The distributions with respect to important categories of occupation and industry, religion, marital status, geography of residence, and birthplace were rather uniform. Although there is no obvious explanation for any of several unexpected minor inequities in the pattern of incidence, there is no compelling evidence to support any specific environmental cause. There is substantial evidence which is inconsistent with those environmental hypotheses that have been proposed previously.

Mack, T.M.; Paganini-Hill, A.

1981-03-15

199

The Los Alamos high-brightness photoinjector  

SciTech Connect

For a number of years Los Alamos National Laboratory has been developing photocathode RF guns for high-brightness electron beam applications such as free-electron lasers (FELs). Previously thermionic high-voltage guns have been the source of choice for the electron accelerators used to drive FELs. The performance of such FELs is severely limited by the emittance growth produced by the subharmonic bunching process and also by the low peak current of the source. In a photoinjector, a laser driven photocathode is placed directly in a high-gradient RF accelerating cavity. A photocathode allows unsurpassed control over the current, and the spatial and temporal profile of the beam. In addition the electrodeless emission'' avoids many of the difficulties associated with multi-electrode guns, i.e. the electrons are accelerated very rapidly to relativistic energies, and there are no electrodes to distort the accelerating fields. For the past two years we have been integrating a photocathode into our existing FEL facility by replacing our thermionic gun and subharmonic bunchers with a high-gradient 1.3 GHz photoinjector. The photoinjector, which is approximately 0.6 m in length, produces 6 MeV, 300 A, 15 ps linac, and accelerated to a final energy of 40 MeV. We have recently begun lasing at wavelengths near 3 {mu}m. 16 refs., 2 figs., 5 tabs.

O'Shea, P.G.

1991-01-01

200

Intense ion beam research at Los Alamos  

SciTech Connect

Two new interdisciplinary programs are underway at Los Alamos involving the physics and technology of intense light ion beams. In contrast to high-power ICF applications, the LANL effort concentrates on the development of relatively low-voltage (50 to 800 kV) and long-pulsewidth (0.1 to 1 {mu}s) beams. The first program involves the 1.2 MV, 300-kJ Anaconda generator which has been fitted with an extraction ion diode. Long pulsewidth ion beams have been accelerated, propagated, and extracted for a variety of magnetic field conditions. The primary application of this beam is the synthesis of novel materials. Initial experiments on the congruent evaporative deposition of metallic and ceramic thin films are reported. The second program involves the development of a 120-keV, 50-kA, 1-{mu}s proton beam for the magnetic fusion program as an ion source for an intense diagnostic neutral beam. Ultra-bright, pulsed neutral beams will be required to successfully measure ion temperatures and thermalized alpha particle energy distributions in large, dense, ignited tokamaks such as ITER.

Rej, D.J.; Bartsch, R.R.; Davis, H.A.; Faehl, R.J.; Gautier, D.C.; Greenly, J.B.; Henins, I.; Linton, T.W.; Muenchausen, R.E.; Waganaar, W.J.

1992-07-01

201

Intense ion beam research at Los Alamos  

SciTech Connect

Two new interdisciplinary programs are underway at Los Alamos involving the physics and technology of intense light ion beams. In contrast to high-power ICF applications, the LANL effort concentrates on the development of relatively low-voltage (50 to 800 kV) and long-pulsewidth (0.1 to 1 {mu}s) beams. The first program involves the 1.2 MV, 300-kJ Anaconda generator which has been fitted with an extraction ion diode. Long pulsewidth ion beams have been accelerated, propagated, and extracted for a variety of magnetic field conditions. The primary application of this beam is the synthesis of novel materials. Initial experiments on the congruent evaporative deposition of metallic and ceramic thin films are reported. The second program involves the development of a 120-keV, 50-kA, 1-{mu}s proton beam for the magnetic fusion program as an ion source for an intense diagnostic neutral beam. Ultra-bright, pulsed neutral beams will be required to successfully measure ion temperatures and thermalized alpha particle energy distributions in large, dense, ignited tokamaks such as ITER.

Rej, D.J.; Bartsch, R.R.; Davis, H.A.; Faehl, R.J.; Gautier, D.C.; Greenly, J.B.; Henins, I.; Linton, T.W.; Muenchausen, R.E.; Waganaar, W.J.

1992-01-01

202

The Los Alamos Neutron Science Center  

NASA Astrophysics Data System (ADS)

The Los Alamos Neutron Science Center, or LANSCE, uses the first truly high-current medium-energy proton linear accelerator, which operated originally at a beam power of 1 MW for medium-energy nuclear physics. Today LANSCE continues operation as one of the most versatile accelerator-based user facilities in the world. During eight months of annual operation, scientists from around the world work at LANSCE to execute an extraordinarily broad program of defense and civilian research. Several areas operate simultaneously. The Lujan Neutron Scattering Center (Lujan Center) is a moderated spallation source (meV to keV), the Weapons Neutron Research Facility (WNR) is a bare spallation neutron source (keV to 800 MeV), and a new ultra-cold neutron source will be operational in 2005. These sources give LANSCE the ability to produce and use neutrons with energies that range over 14 orders of magnitude. LANSCE also supplies beam to WNR and two other areas for applications requiring protons. In a proton radiography (pRad) area, a sequence of narrow proton pulses is transmitted through shocked materials and imaged to study dynamic properties. In 2005, LANSCE began operating a facility that uses 100-MeV protons to produce medical radioisotopes. To sustain a vigorous program beyond this decade, LANSCE has embarked on a project to refurbish key elements of the facility and to plan capabilities beyond those that presently exist.

Lisowski, Paul W.; Schoenberg, Kurt F.

2006-06-01

203

NIST--Los Alamos racetrack microtron status  

SciTech Connect

The NIST-Los Alamos Racetrack Microtron (RTM) is designed to deliver a low-emittance electron beam of up to 0.5 mA cw over an energy range of 17 MeV to 185 MeV. Fed by a 5 MeV injector, the RTM contains two 180/degree/ end magnets that recirculate the beam up to 15 times through a 12 MeV RF linac. The linac, which operates in a standing-wave mode at 2380 MHz, has been tested to nearly full RF power. At present, the injector has undergone beam tests, and the beam transport system is complete through the 12 MeV linac. A temporary beam line has been installed at the exit of one end magnet to measure the beam energy, energy spread, and emittance after one pass through the accelerator. Preliminary results indicate that the accelerated beam energy spread and emittance are within design goals. 4 refs., 7 figs.

Wilson, M.A.; Ayres, R.L.; Cutler, R.I.; Debenham, P.H.; Lindstrom, E.R.; Mohr, D.L.; Penner, S.; Rose, J.E.; Young, L.M.

1988-01-01

204

Los Alamos upgrade in metallographic capabilities  

SciTech Connect

The Los Alamos Wing 9 Hot Cell Facility is in the process of upgrading their metallographic sample preparation and examination capability. The present capability to grind, polish and etch samples from reactor fuels and materials has been in operation for 18 years. Macro photography and alpha and beta-gamma autoradiography are an important part of this capability. Some of the fast breeder reactor experiments have contained sodium as a coolant. Therefore, the capability to distill sodium from some samples scheduled for microstructural examinations is a requirement. Since the reactor fuel samples are highly radioactive and contain plutonium, either as fabricated or as a result of breeding during reactor service, these samples must be handled in shielded hot cells containing alpha boxes to isolate the plutonium and hazardous fission products from personnel and the environment. The present equipment that was designed and built into those alpha boxes has functioned very well for the past 18 years. During that time the technicians have thought of ways to improve the equipment to do the work faster and safer. These ideas and ideas that have been developed during the design of new alpha boxes and new equipment for microstructural sample preparation have provided the concepts for the capability to perform the work faster and maintain the equipment in a safer manner.

Ledbetter, J.M.; Dowler, K.E.; Cook, J.H.

1985-01-01

205

Expanded recycling at Los Alamos National Laboratory  

SciTech Connect

The Pollution Prevention Program Office has increased recycling activities, reuse, and options to reduce the solid waste streams through streamlining efforts that applied best management practices. The program has prioritized efforts based on volume and economic considerations and has greatly increased Los Alamos National Laboratory`s (LANL`s) recycle volumes. The Pollution Prevention Program established and chairs a Solid Waste Management Solutions Group to specifically address and solve problems in nonradioactive, Resource Conservation and Recovery Act (RCRA), state-regulated, and sanitary and industrial waste streams (henceforth referred to as sanitary waste in this paper). By identifying materials with recycling potential, identifying best management practices and pathways to return materials for reuse, and introducing the concept and practice of {open_quotes}asset management,{open_quotes} the Group will divert much of the current waste stream from disposal. This Group is developing procedures, agreements, and contracts to stage, collect, sort, segregate, transport and process materials, and is also garnering support for the program through the involvement of upper management, facility managers, and generators.

Betschart, J.F.; Malinauskas, L.; Burns, M.

1996-07-01

206

URBAN PLANNING MANAGEMENT SYSTEM IN LOS ANGELES: AN OVERVIEW  

Microsoft Academic Search

This paper gives an overview of the urban planning management system in Los Angeles, United States. This system consists of institutional subsystem, legal subsystem, operational subsystem, and technical subsystem. The City of Los Angeles Planning Department carries out its urban planning responsibilities in accordance with the General Plan Guidelines promulgated by the Governor’s Office of Planning and Research. The planning

Xueming Chen

2009-01-01

207

Lessons in Leadership: Robert Oppenheimer and the Los Alamos Laboratory  

Microsoft Academic Search

The leadership of Robert Oppenheimer, Director of the Los Alamos Laboratory during WWII, serves as a vivid lesson in leadership. The recollections of those who worked with Oppenheimer at Los Alamos clearly attribute much of the success of the laboratory to Oppenheimer's leadership. Of specific interest are: Oppenheimer's efforts in recruiting, his ability to create a sense of meaning and

RICHARD C. RINGER

2007-01-01

208

Los Angeles Tries Luring Back Dropouts via Social Networks  

ERIC Educational Resources Information Center

|This article reports that education leaders in Los Angeles, faced with unrelenting pressure to raise anemic high school graduation rates, are turning to YouTube, MySpace, text messaging, and the radio waves to reach students at risk of dropping out of school and lure back thousands who have already left. The Los Angeles Unified School…

Maxwell, Lesli A.

2007-01-01

209

Roberto Gutierrez and the Art of Mapping Latino Los Angeles  

ERIC Educational Resources Information Center

|Chicano artist Roberto Gutierrez is one of the most important artists to come out of the East Los Angeles artistic boom of the early 1970s. Gutierrez's life and the significance of his work to the evolving Chicano artistic narrative about Latino life and aesthetics in Los Angeles are discussed.|

Orozco, Jose

2004-01-01

210

Envisioning a Public Research Agenda in Los Angeles  

ERIC Educational Resources Information Center

|The University of California, Los Angeles is an institution founded on a public mission and positioned as a world-renowned research university. This article describes the successes, challenges and future directions of a concerted institutional effort to engage with the broader Los Angeles community to address pressing social issues and needs. The…

Vogelgesang, Lori J.; Gilliam, Franklin D., Jr.; O'Byrne, Kathy; Leal-Sotelo, Margaret

2006-01-01

211

Glitches in Los Angeles Payroll System Spark Furor  

ERIC Educational Resources Information Center

|Thousands of Los Angeles teachers have not been paid properly for months because of errors in a corporate-style payroll system that was introduced in January as part of a sweeping, $95 million computer modernization. The Los Angeles Unified School District acknowledges that the payroll system's rollout was rushed and tainted by numerous…

Trotter, Andrew

2007-01-01

212

The Los Alamos Space Science Outreach (LASSO) Program  

Microsoft Academic Search

The Los Alamos Space Science Outreach (LASSO) program features summer workshops in which K-14 teachers spend several weeks at LANL learning space science from Los Alamos scientists and developing methods and materials for teaching this science to their students. The program is designed to provide hands-on space science training to teachers as well as assistance in developing lesson plans for

P. L. Barker; R. M. Skoug; R. J. Alexander; M. F. Thomsen; S. P. Gary

2002-01-01

213

Occupational Status Attainment Among Ethnic Groups in Los Angeles  

Microsoft Academic Search

In a nation of immigrants Los Angeles is increasingly a city of new immigrants. As of 1980,which is the most recent date for which good data are available, 20 percent of the population of the Los Angeles metropolitan area had been born abroad, mostly in Latin America and various Asian countries. Whereas New York historically has been the major port

Donald J. Treiman; Vivian Lew; Hye-Kyung Lee; Thad A. Brown

1986-01-01

214

Coca-Cola Hispanic Education Fund: Los Angeles Program Description.  

ERIC Educational Resources Information Center

|The Coca-Cola Hispanic Education Fund was created in response to the high school dropout problem in Los Angeles. The Fund enables the Coca-Cola Bottling Company of Los Angeles to build upon the successful relationship it has developed in the Hispanic community and maximizes the effectiveness of existing student support programs by directing needy…

Coca Cola Bottling Co. of Los Angeles, CA.

215

La deforestación y los derechos de propiedad en América Latina  

Microsoft Academic Search

En el presente documento se analiza la vinculación entre los derechos de propiedad y la deforestación en América Latina. Según ese análisis, hay dos esferas separadas en que las cuestiones relacionadas con la tenencia inciden sobre el interés en el desmonte, a saber, la seguridad de los derechos de propiedad individual sobre las tierras agrícolas establecidas y sus efectos sobre

Carlos Felipe Jaramillo; Thomas Kelly

1999-01-01

216

Contributions of chemistry in early day Los Alamos  

Microsoft Academic Search

During 1943--1945, the premier physics laboratory in the world was at Los Alamos, but chemistry contributions were vital. Major chemical impacts on the success of the Los Alamos wartime mission included electrochemistry, which found the true melting point of plutonium metal to be hundreds of degrees lower than anticipated. This discovery had profound simplifying effects regarding crucibles to contain molten

R. A. Penneman; R. A. Meade

1990-01-01

217

Analysis of Los Angeles Photochemical Smog Data: A Statistical Overview  

Microsoft Academic Search

A research project has been under way to investigate air pollution problems in Los Angeles County with the help of the data supplied by the Los Angeles County Air Pollution Control District. These data consist of measurements of primary pollutants such as nitric oxide, hydrocarbons, carbon monoxide, sulfur dioxide and particu-lates, and secondary pollutants such as ozone and nitrogen dioxide,

G. C. Tiao; G. E. P. Box; W. J. Hamming

1975-01-01

218

Virtual instruments -- A Los Alamos experiment  

SciTech Connect

Changing priorities, shrinking budgets, reduced personnel, and collapsed time schedules in post-Cold War Los Alamos have forced project managers to face software ``time-to-market`` issues similar to their commercial counterparts. Programs that are funded over a period of several years are now the exception rather than the norm. Projects are much more diverse and have more clearly defined goals and termination points compared with the previous objective of incremental improvements through a series of developmental efforts. Software development and support for such projects has to be less costly than before, since the software is a ``throwaway`` when the project is over. The authors came up with a wish list for a software development system that would meet their needs. The list includes: (1) higher productivity, faster turnaround than the present approach of starting from scratch in C or FORTRAN; (2) flexibility--able to make moderate changes in program flow without significant setbacks in the development schedule; (3) high-level focus--spending more time on the algorithms and less time on GUI or driver issues; (4) greater code reusability, and good mechanisms for documenting code flow and code modifications; (5) multiplatform implementations--IBM-PC, Sun, Mac, not so much for code porting but for user training issues; (6) reasonable code execution speeds--able to keep up with data acquisition rates required for the project; (7) ability to link-in external code when necessary; (8) sufficient debugging tools; (9) satisfactory product support and response times to questions (hours, not days); and (10) vital life signs from the vendor`s R and D department--upgrades, bug fixes, enhancements, response to customer feedback.

Khalsa, N.S.

1995-10-01

219

Beam funneling studies at Los Alamos  

SciTech Connect

Funneling two ion beams by interlacing their bunches can reduce the cost and complexity of systems producing intense beams. Applications of funneling could include accelerators for heavy ion inertial fusion, electronuclear breeding, and fusion materials irradiation. Funneling in an RFQ-like structure is an elegant solution at low energy where electric fields are needed to provide strong focusing. Discrete-element funnels, with separate focusing elements, bending magnets, rebunchers and if deflectors, are more flexible. At sufficiently high energies, magnetic-quadrupole lenses can provide strong focusing in a discrete-element funnel. Such a funnel has been designed as a preliminary example of a second funnel in the HIBALL-II accelerator system. In a simulation, two Bi/sup +1/ (mass = 209 amu) beams at 0.5 MeV/A, 20 MHz, 40-mA, separated by 55 cm and angled at +-6/degree/ were combined into a single 80-mA beam at 40 MHz. Emittance growth was calculated, by a modified version of the PIC (particle-in-cell) code PARMILA, to be about 1%. Funnel design experience at Los Alamos has evolved rules-of-thumb that reduce emittance growth. Some of these are to maintain focusing periodicity and strength in both transverse and longitudinal directions; use strong focusing so that the bunch will be small; minimize angles of bend and rf deflection; adjust longitudinal focusing to produce a short bunch at the rf deflector; and design rf deflectors for a uniform electrical field. 4 refs., 3 figs., 2 tabs.

Stovall, J.E.; Guy, F.W.; Stokes, R.H.; Wangler, T.P.

1988-01-01

220

Waste characterization at Los Alamos National Laboratory  

SciTech Connect

Most industries generate limited types of solid wastes of a result of their manufacturing processes. The Los Alamos National Laboratory (LANL), a research and development facility, generates a large variety of solid wastes, some exotic. Over 50,000 distinct waste streams are currently generated in the 43 square mile area defining LANL. These wastes include refuse, medical, infectious, hazardous, radioactive, and mixed wastes. LANL is subject to federal and State oversight on matters concerning management of solid wastes. In order to assure regulatory agencies such as the New Mexico Environment Department (NMED) and the US Environmental Protection Agency (EPA) that the Laboratory is properly managing and disposing all solid wastes. LANL has undertaken an extensive waste characterization program to identify sources and ultimate disposition of all solid wastes. Given the number of solid waste streams expected, LANL has taken a two-pronged approach to characterizing wastes: (a) physical identification of all sources of solid wastes including interviews with waste generators; and (b) characterization of wastes from the point of generation. The former approach consists of canvassing all structures within the LANL complex, interviewing waste generators, and identifying sources of waste generation. Data gathered by these interviews are compiled in a database in order to identify the types and rates of waste generation and correct mismanagement of wastes identified during the interviews. The latter approach consists of characterizing all solid wastes which are controlled administratively or subject to stricter controls than municipal solid wastes (i.e., infectious, hazardous, radioactive, and mixed wastes). This characterization forms the basis by which LANL will manage solid waste in accordance to NMED/EPA regulations and US Department of Energy Orders. 8 refs., 3 figs.

Corpion, J.C.; Grieggs, A.R.

1991-01-01

221

Recent UCN source developments at Los Alamos  

SciTech Connect

The most intense sources of ultra cold neutrons (UCN) have bee built at reactors where the high average thermal neutron flux can overcome the low UCN production rate to achieve usable densities of UCN. At spallation neutron sources the average flux available is much lower than at a reactor, though the peak flux can be comparable or higher. The authors have built a UCN source that attempts to take advantage of the high peak flux available at the short pulse spallation neutron source at the Los Alamos Neutron Science Center (LANSCE) to generate a useful number of UCN. In the source UCN are produced by Doppler-shifted Bragg scattering of neutrons to convert 400-m/s neutrons down into the UCN regime. This source was initially tested in 1996 and various improvements were made based on the results of the 1996 running. These improvements were implemented and tested in 1997. In sections 2 and 3 they discuss the improvements that have been made and the resulting source performance. Recently an even more interesting concept was put forward by Serebrov et al. This involves combining a solid Deuterium UCN source, previously studied by Serebrov et al., with a pulsed spallation source to achieve world record UCN densities. They have initiated a program of calculations and measurements aimed at verifying the solid Deuterium UCN source concept. The approach has been to develop an analytical capability, combine with Monte Carlo calculations of neutron production, and perform benchmark experiments to verify the validity of the calculations. Based on the calculations and measurements they plan to test a modified version of the Serebrov UCN factory. They estimate that they could produce over 1,000 UCN/cc in a 15 liter volume, using 1 {micro}amp of 800 MeV protons for two seconds every 500 seconds. They will discuss the result UCN production measurements in section 4.

Seestrom, S.J.; Anaya, J.M.; Bowles, T.J. [and others

1998-12-01

222

A través de los ojos de Carl Marx: reseña de los escritos de Marx sobre América Latina en Alberto Fillipi  

Microsoft Academic Search

La historia de las instituciones latinoamericanas es compleja, densa y ambivalente. Italiano de nacimiento, pero venezolano por opción; el profesor Alberto Fillipi es considerado como uno de los principales estudiosos de las instituciones latinoamericanas en el mundo. En su obra, Las Instituciones e Ideologías en la Independencia Hispanoamericana, Fillipi recoge un conjunto de ensayos los cuales fueron escritos en diferentes

Maximiliano Korstanje

2007-01-01

223

The Los Angeles Riots Revisited: The Changing Face of the Los Angeles Unified School District and the Challenge for Educators  

ERIC Educational Resources Information Center

|This article provides a brief history of the Los Angeles Unified School District (LAUSD), including an analysis of the demographic shifts and the tensions between the African American and Korean American communities at the time of the Los Angeles riots in 1992. The article includes my own experiences teaching high school English during the…

Davis, Donna M.

2007-01-01

224

SEISMIC DESIGN OF LOS QUILLAYES TAILINGS DAMS IN CHILE DISEÑO SISMICO DE LA PRESA DE RELAVES LOS QUILLAYES IN CHILE  

Microsoft Academic Search

The paper describes the characteristics of Los Quillayes high tailings dam currently in operation at Los Pelambres copper mine in Chile and also includes a description of the selected design earthquake, the geotechnical characterization of tailings sand including cyclic strength, and the stability analysis originally carried out, both 2D and 3D, and other design considerations. A description of the current

Luis Valenzuela

225

La Evolución de los Sistemas de Pagos de Bajo Valor en el Perú  

Microsoft Academic Search

El trabajo describe el desarrollo de los sistemas interbancarios de pago de bajo valor en el Perú en el período 2005-2010. Se destaca que las transferencias de crédito han tenido una alta tasa de crecimiento en los últimos cinco años, aunque los valores y volúmenes alcanzados son aún más bajos que los obtenidos en la región. Los bajos niveles de

Marylin Choy; Victor Roca

2010-01-01

226

Dating Desert Meteorites: The Los Angeles Experience  

NASA Astrophysics Data System (ADS)

The basaltic shergottite Los Angeles (LA) consists of two stones that are slightly to negligibly weathered. LA is petrologically similar to Shergotty and Zagami, both observed falls. We dated both stones by the Rb-Sr and Sm-Nd techniques. Our sample of LA#1 had visible patches of caliche on its surface. These were scraped away, and the sample coarsely crushed. A bulk sample was leached for 10 minutes in warm, 2N HCl, and the leachate and residue analysed. A second bulk sample was analysed without leaching. A third, more finely ground bulk sample also was analysed following 2N HCl leaching. Mineral separates of plagioclase and pyroxene were prepared by magnetic separation and handpicking, leached, and analysed. The Rb-Sr data showed the effects of terrestrial contamination, with data for the leachates forming a mixing line leading towards the Rb-Sr isotopic composition of plagioclase. The caliche was analysed and found to contain ~5260 ppm of Sr, but only ~34 ppm of Nd. A second set of mineral separates were leached more aggressively. The resultant data define a Rb-Sr isochron age of 165+/-11 Ma, in excellent agreement with previously determined Rb-Sr ages for Shergotty and Zagami. With one exception, Sm-Nd data for leachates of LA#1, combined with data for bulk samples and a plagioclase separate, give a Sm-Nd age of 172+/-8 Ma, in good agreement with the Rb-Sr age. A second plagioclase separate contained an isotopically distinct Nd contaminant, more radiogenic than caliche Nd. The sample of LA#2 was precleaned in 4N HCl and 4N HNO3 prior to crushing. About 30 mg of the sample dissolved during this procedure. Its Sr and Nd concentrations were ~170 and ~70 ppm, resp. The Rb-Sr data showed the presence of caliche, but the Sm-Nd isotopic data are colinear with other data on a Sm-Nd isochron diagram. This step extracted a large fraction of the REE, apparently from sample phosphates. Pyroxene mineral separates were further treated with (2N HCl + 5% HF), and the residues analysed. All the Sm-Nd data, including that for plagioclase (unleached), the preclean leachate, a leach/residue pair for a bulk sample, an unleached bulk sample, and the pyroxene residues, fall along the same isochron, defining a Sm-Nd age of 174+/-12 Ma. Chondrite normalized (Nd/Sm)CN = 1.7 for caliche, and ~0.45, ~0.85, and ~1.3 for LA pyroxene, bulk rock and leachates (phosphates), and plagioclase, respectively. These values for pyroxene and bulk rock are the same as for corresponding samples of Zagami; Zagami plagioclase separates were relatively impure, precluding comparison. Contributions from caliche to the Sr inventories of the LA samples varied from 0 to ~80%, as calculated from their measured 87Sr/86Sr ratios and the 87Sr/86Sr ratios of caliche and plagioclase. The (Nd/Sm)CN values for the samples do not vary with Sr contamination within this range, further suggesting that the Sm-Nd systematics of LA are virtually unaffected by the presence of caliche. The Sr isotopic data suggest that weathering of meteoritic plagioclase played a role in development of the caliche. A higher Nd/Sr ratio in caliche than in plagioclase may reflect some contribution from meteoritic phosphates as well.

Nyquist, L. E.; Reese, Y. D.

2001-12-01

227

Los Ácidos Grasos Trans Ahora Serán Listados Junto con las ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Qué es un Ácido Graso Trans? ¿Dónde se encuentran los ácidos grasos trans? ... Seleccione un producto para una respuesta! ... More results from www.fda.gov/food/ingredientspackaginglabeling/labelingnutrition

228

Los peligros de la leche cruda: La Leche sin Pasteurizar ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Los peligros de la leche cruda: La Leche sin Pasteurizar Puede Representar un Riesgo Grave Para la Salud. From the ... More results from www.fda.gov/food/foodborneillnesscontaminants/buystoreservesafefood

229

Comunicado de la FDA sobre la seguridad de los ...  

Center for Drug Evaluation (CDER)

... entonces, se han publicado varios estudios epidemiológicos enfocados en la relación entre los bifosfonatos por vía oral y el cáncer de esófago con ... More results from www.fda.gov/drugs/drugsafety

230

Explosive Flux Compression: 50 Years of Los Alamos Activities  

SciTech Connect

Los Alamos flux compression activities are surveyed, mainly through references in view of space limitations. However, two plasma physics programs done with Sandia National Laboratory are discussed in more detail.

Fowler, C.M.; Thomson, D.B.; Garn, W.B.

1998-10-18

231

Comunicado de la FDA sobre la seguridad de los ...  

Center for Drug Evaluation (CDER)

... historia de convulsiones o que tienen insuficiencia renal (de los riñones) moderada o severa (medida como depuración de creatinina [CrCl] inferior ... More results from www.fda.gov/drugs/drugsafety

232

Fine Pore Diffuser Fouling: The Los Angeles Studies.  

National Technical Information Service (NTIS)

This report describes five fine pore diffuser evaluations conducted at three different wastewater treatment plants located in the greater Los Angeles area. The overall goal of the study was to evaluate the performance of fine pore diffusers using selected...

M. K. Stenstrom G. Masutani

1994-01-01

233

Los Alamos Sferic Array: Ground Truth for the FORTE Satellite.  

National Technical Information Service (NTIS)

This paper describes the operation and performance of the Los Alamos National Laboratory (LANL) sferic array, providing an overview of the first two years of operation and highlighting some initial results. The geolocation performance has been evaluated t...

D. A. Smith K. B. Eack J. Harlin M. J. Heavener A. R. Jacobson R. S. Massey X. M. Shao K. C. Wiens

2000-01-01

234

Some Results of Applied Spallation Physics Research at Los Alamos.  

National Technical Information Service (NTIS)

At the Los Alamos National Laboratory, we have an active effort in the general area of Applied Spallation Physics Research. The main emphasis of this activity has been on obtaining basic data relevant to spallation neutron source development, accelerator ...

G. J. Russell J. S. Gilmore

1983-01-01

235

Los Angeles Library Fire--Learning the Hard Way.  

ERIC Educational Resources Information Center

Describes the damage and salvage efforts resulting from the burning of the Los Angeles Central Library in 1986, and makes several recommendations for fire and arson prevention measures and contingency salvage plans. (CLB)

Morris, John

1987-01-01

236

Manipulación segura de los alimentos: Lo que usted debe ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... Para evitar la contaminación cruzada, recuerde lo siguiente: ... El aire frío debe circular para ayudar a mantener los alimentos seguros. ... More results from www.fda.gov/food/foodborneillnesscontaminants/buystoreservesafefood

237

Ley de Modernización de la Inocuidad de los Alimentos ...  

Center for Food Safety and Applied Nutrition (CFSAN)

... transmitidas por los alimentos afectan a 48 millones de estadounidenses, causando la hospitalización de cien mil y la muerte de millares. ... More results from www.fda.gov/food/guidanceregulation/fsma

238

2011 Comunicaciones de la FDA sobre la seguridad de los ...  

Center for Drug Evaluation (CDER)

... Bifosfonatos - Continúa la revisión de seguridad de los medicamentos por vía oral para la osteoporosis (bifosfonatos) en relación con un probable ... More results from www.fda.gov/drugs/drugsafety

239

Spent-fuel verification with the Los Alamos fork detector  

SciTech Connect

The Los Alamos fork detector for the verification of spent-fuel assemblies has generated precise, reproducible data. The data analyses have now evolved to the point of placing tight restrictions on a diverter's actions.

Rinard, P.M.; Bosler, G.E.

1987-01-01

240

Impacts of Transportation Control Strategies on Los Angeles Air Quality.  

National Technical Information Service (NTIS)

A photochemical/diffusion simulation model is employed to evaluate four control strategies for reducing air pollution in Los Angeles. Three previously tested, representative air trajectories serve as baseline cases using 1969 emission levels. Transportati...

J. R. Martinez R. A. Nordsieck A. Q. Eschenroeder

1973-01-01

241

Collaborative Network Evolution: The Los Angeles Terrorism Early Warning Group.  

National Technical Information Service (NTIS)

This study bridges the narrow divide between collaboration theory and networking and views organizations as a source of collaborative processes. Social network analysis is applied to determine how the Los Angeles Terrorism Early Warning Group (TEW) evolve...

S. M. Rust

2006-01-01

242

1993 Northern goshawk inventory on portions of Los Alamos National Laboratory, Los Alamos, NM. Final report  

SciTech Connect

Northern goshawks (Accipiter gentilis) (hereafter referred to as goshawk) is a large forest dwelling hawk. Goshawks may be declining in population and reproduction in the southwestern United States. Reasons for the possible decline in goshawk populations include timber harvesting resulting in the loss of nesting habitat, toxic chemicals, and the effects of drought, fire, and disease. Thus, there is a need to determine their population status and assess impacts of management activities in potential goshawk habitat. Inventory for the goshawk was conducted on 2,254 ha of Los Alamos National Laboratory (LANL) to determine the presence of nesting goshawks on LANL lands. This information can be incorporated into LANL`s environmental management program. The inventory was conducted by Colorado State University personnel from May 12 to July 30, 1993. This report summarizes the results of this inventory.

Sinton, D.T.; Kennedy, P.L. [Colorado State Univ., Fort Collins, CO (United States). Dept. of Fishery and Wildlife Biology

1994-06-01

243

SBIRS high payload LOS attitude determination and calibration  

Microsoft Academic Search

This paper describes the space-based infrared sensor (SBIRS) payload line-of-sight (LOS) attitude determination and calibration algorithm required for both GEO and HEO missions. Included in the algorithm are three multi-state extended Kalman filters (EKFs) which correct the payload LOS attitude error as well as on-gimbal gyro bias error using celestial observations. For the GEO mission, the celestial observations are obtained

A. Wu

1998-01-01

244

Audit of consultant agreements at Los Alamos National Laboratory  

SciTech Connect

The Department of Energy`s (Department) Albuquerque Operations Office (Albuquerque) and Los Alamos National Laboratory (Los Alamos) are responsible for acquiring consulting services in a manner most advantageous to the Government by ensuring adequate competition. Although the Department prefers competitively awarding subcontracts, including consultant agreements, to ensure the lowest possible cost, it allows sole sourcing a subcontract if the sole source is fully justified. The objective of the audit was to determine whether Los Alamos` consultant agreements contained adequate sole source justifications. The audit showed that Los Alamos may not have acquired some of its consultant agreements at the lowest possible cost because it did not prepare adequate sole source justifications for 17 sole source consultant agreements valued at $842,900. This condition existed because: (1) requesters did not follow policies and procedures when preparing sole source justifications, (2) Los Alamos did not have an internal mechanism to reject consultant agreements that were not adequately justified, and (3) the Department did not review consultant agreements to evaluate the adequacy of sole source justifications. Without adequate justifications, the Department cannot be assured that consultant services were obtained at the lowest possible cost. We therefore recommended that the Manager, Albuquerque Operations Office require Los Alamos to ensure proper sole source justifications and enhance internal controls over consultant agreements. Management agreed to implement the recommendations.

NONE

1996-02-23

245

Los Alamos low-level waste performance assessment status  

SciTech Connect

This report reviews the documented Los Alamos studies done to assess the containment of buried hazardous wastes. Five sections logically present the environmental studies, operational source terms, transport pathways, environmental dosimetry, and computer model development and use. This review gives a general picture of the Los Alamos solid waste disposal and liquid effluent sites and is intended for technical readers with waste management and environmental science backgrounds but without a detailed familiarization with Los Alamos. The review begins with a wide perspective on environmental studies at Los Alamos. Hydrology, geology, and meteorology are described for the site and region. The ongoing Laboratory-wide environmental surveillance and waste management environmental studies are presented. The next section describes the waste disposal sites and summarizes the current source terms for these sites. Hazardous chemical wastes and liquid effluents are also addressed by describing the sites and canyons that are impacted. The review then focuses on the transport pathways addressed mainly in reports by Healy and Formerly Utilized Sites Remedial Action Program. Once the source terms and potential transport pathways are described, the dose assessment methods are addressed. Three major studies, the waste alternatives, Hansen and Rogers, and the Pantex Environmental Impact Statement, contributed to the current Los Alamos dose assessment methodology. Finally, the current Los Alamos groundwater, surface water, and environmental assessment models for these mesa top and canyon sites are described.

Wenzel, W.J.; Purtymun, W.D.; Dewart, J.M.; Rodgers, J.E. (comps.)

1986-06-01

246

40 CFR 52.227 - Control strategy and regulations: Particulate matter, Metropolitan Los Angeles Intrastate Region.  

Code of Federal Regulations, 2013 CFR

...strategy and regulations: Particulate matter, Metropolitan Los Angeles Intrastate...strategy and regulations: Particulate matter, Metropolitan Los Angeles Intrastate...the secondary standards for particulate matter in the Metropolitan Los Angeles...

2013-07-01

247

40 CFR 81.17 - Metropolitan Los Angeles Air Quality Control Region.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Metropolitan Los Angeles Air Quality Control Region. 81.17...Regions § 81.17 Metropolitan Los Angeles Air Quality Control Region. The Metropolitan Los Angeles Air Quality Control Region...

2010-07-01

248

40 CFR 52.227 - Control strategy and regulations: Particulate matter, Metropolitan Los Angeles Intrastate Region.  

Code of Federal Regulations, 2010 CFR

...Particulate matter, Metropolitan Los Angeles Intrastate Region. 52.227 Section...Particulate matter, Metropolitan Los Angeles Intrastate Region. (a) The requirements...particulate matter in the Metropolitan Los Angeles Intrastate Region. (b) The...

2009-07-01

249

40 CFR 52.227 - Control strategy and regulations: Particulate matter, Metropolitan Los Angeles Intrastate Region.  

Code of Federal Regulations, 2010 CFR

...Particulate matter, Metropolitan Los Angeles Intrastate Region. 52.227 Section...Particulate matter, Metropolitan Los Angeles Intrastate Region. (a) The requirements...particulate matter in the Metropolitan Los Angeles Intrastate Region. (b) The...

2010-07-01

250

40 CFR 81.17 - Metropolitan Los Angeles Air Quality Control Region.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 false Metropolitan Los Angeles Air Quality Control Region. 81.17...Regions § 81.17 Metropolitan Los Angeles Air Quality Control Region. The Metropolitan Los Angeles Air Quality Control Region...

2009-07-01

251

Los Angeles Department of Water and Power Electric and Hybrid Vehicle Program site operator program.  

National Technical Information Service (NTIS)

The Los Angeles Department of Water and Power (LADWP), a municipal utility serving the citizens of Los Angeles, marked its tenth year of involvement in testing and promoting electric vehicles as part of Los Angeles' overall air quality improvement program...

1998-01-01

252

83. FIRST AND SECOND AQUEDUCTS LOOKING EAST/NORTHEAST Los Angeles ...  

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

83. FIRST AND SECOND AQUEDUCTS LOOKING EAST/NORTHEAST - Los Angeles Aqueduct, From Lee Vining Intake (Mammoth Lakes) to Van Norman Reservoir Complex (San Fernando Valley), Los Angeles, Los Angeles County, CA

253

Wave Conditions for Proposed Harbor Development in Los Angeles Outer Harbor, Los Angeles, California, Supplemental Tests. Coastal Model Investigation.  

National Technical Information Service (NTIS)

A 1:100 scale (undistorted) hydraulic model of Los Angeles Outer Harbor, California, was used to investigate short-period storm and subsequent wave conditions for proposed harbor development located near the Angel's Gate entrance. The model reproduced the...

H. F. Acuff R. R. Bottin

1991-01-01

254

Environmental assessment for effluent reduction, Los Alamos National Laboratory, Los Alamos, New Mexico  

SciTech Connect

The Department of Energy (DOE) proposes to eliminate industrial effluent from 27 outfalls at Los Alamos National Laboratory (LANL). The Proposed Action includes both simple and extensive plumbing modifications, which would result in the elimination of industrial effluent being released to the environment through 27 outfalls. The industrial effluent currently going to about half of the 27 outfalls under consideration would be rerouted to LANL`s sanitary sewer system. Industrial effluent from other outfalls would be eliminated by replacing once-through cooling water systems with recirculation systems, or, in a few instances, operational changes would result in no generation of industrial effluent. After the industrial effluents have been discontinued, the affected outfalls would be removed from the NPDES Permit. The pipes from the source building or structure to the discharge point for the outfalls may be plugged, or excavated and removed. Other outfalls would remain intact and would continue to discharge stormwater. The No Action alternative, which would maintain the status quo for LANL`s outfalls, was also analyzed. An alternative in which industrial effluent would be treated at the source facilities was considered but dismissed from further analysis because it would not reasonably meet the DOE`s purpose for action, and its potential environmental effects were bounded by the analysis of the Proposed Action and the No Action alternatives.

NONE

1996-09-11

255

75 FR 24957 - Decision to Evaluate a Petition to Designate a Class of Employees From the Los Alamos National...  

Federal Register 2010, 2011, 2012, 2013

...Petition to Designate a Class of Employees From the Los Alamos National Laboratory, Los Alamos, NM, To Be Included in the Special Exposure...petition to designate a class of employees from the Los Alamos National Laboratory, Los Alamos, New...

2010-05-06

256

A progress report on UNICOS misuse detection at Los Alamos  

SciTech Connect

An effective method for detecting computer misuse is the automatic monitoring and analysis of on-line user activity. During the past year, Los Alamos enhanced its Network Anomaly Detection and Intrusion Reporter (NADIR) to include analysis of user activity on Los Alamos` UNICOS Crays. In near real-time, NADIR compares user activity to historical profiles and tests activity against expert rules. The expert rules express Los Alamos` security policy and define improper or suspicious behavior. NADIR reports suspicious behavior to security auditors and provides tools to aid in follow-up investigations. This paper describes the implementation to date of the UNICOS component of NADIR, along with the operational experiences and future plans for the system.

Thompson, J.L.; Jackson, K.A.; Stallings, C.A.; Simmonds, D.D.; Siciliano, C.L.B.; Pedicini, G.A. [Los Alamos National Lab., NM (United States). Computing, Information and Communications Div.

1995-10-01

257

Publications of Los Alamos research, 1977-1981  

SciTech Connect

This bibliography is a compilation of unclassified publications of work done at the Los Alamos National Laboratory for 1977-1981. Papers published in those years are included regardless of when they were actually written. Publications received too late for inclusion in earlier compilations have also been listed. Declassification of previously classified reports is considered to constitute publication. All classified issuances are omitted - even those papers, themselves unclassified, which were published only as part of a classified document. If a paper was published more than once, all places of publication are included. The bibliography includes Los Alamos National Laboratory reports, papers released as non-Laboratory reports, journal articles, books, chapters of books, conference papers either published separately or as part of conference proceedings issued as books or reports, papers published in congressional hearings, theses, and US patents. Publications by Los Alamos authors that are not records of Laboratory-sponsored work are included when the Library becomes aware of them.

Sheridan, C.J.; Garcia, C.A. (comps.)

1983-03-01

258

Water supply at Los Alamos during 1993. Progress report  

SciTech Connect

This report summarizes production and aquifer conditions for water wells in the Guaje, Pajarito, and Otowi Well Fields. These wells supplied all of the potable water used for municipal and some industrial purposes in Los Alamos County and the Los Alamos National Laboratory during 1993. The wells in the Los Alamos Well Field were transferred to San Ildefonso Pueblo in 1992. Four of the wells in the Los Alamos Well Field were plugged in 1993. One of the two new wells in the Otowi Well Field became operational in 1993. The spring gallery in Water Canyon supplied nonpotable water for industrial use, while surface water from the Los Alamos Reservoir was diverted for irrigation. In 1993 no water was used from the Guaje Reservoir. Due to the maintenance and operating cost of diverting water from the reservoirs, it is not economically feasible to continue their use for irrigation. This report fulfills some of the requirements of the Los Alamos Groundwater Protection Management Program by documenting use of the groundwater for water supply and providing information hydrologic characteristics of the main aquifer. This report is a joint effort between the Laboratory Water Quality and Hydrology Group and the Utilities Department of Johnson Controls World Services Inc. (JCI). The purpose of this report is to ensure a continuing historical record and to provide guidance for management of water resources in long-range planning for the water supply system. We have issued one summary report for the period of 1947 to 1971 and 22 annual reports that contain the results of our studies of these water supplies. An additional report summarized the hydrology of the main aquifer with reference to future development of groundwater supplies. A report was issued in 1988 that examined the status of wells and future water supply.

Purtymun, W.D.; Stoker, A.K.; McLin, S.G.; Maes, M.N.; Glasco, T.A.

1995-10-01

259

Los Alamos DP West Plutonium Facility decontamination project  

SciTech Connect

The DP West Plutonium Facility operated by the Los Alamos National Laboratory, Los Alamos, New Mexico, was decontaminated between April 1978 and April 1981. The facility was constructed in 1944 to 1945 to produce plutonium metal and fabricate parts for nuclear weapons. It was continually used as a plutonium processing and research facility until mid-1978. Decontamination operations included dismantling and removing gloveboxes and conveyor tunnels; removing process systems, utilities, and exhaust ducts; and decontaminating all remaining surfaces. This report describes glovebox and conveyor tunnel separations, decontamination techniques, health and safety considerations, waste management procedures, and costs of the operation.

Garde, R.; Cox, E.J.; Valentine, A.M.

1982-01-01

260

Los Pigmentos Vegetales y la Fotosíntesis  

NSDL National Science Digital Library

En esta lección se examinarán las dos principales clases de pigmentos fotosintéticos: las clorofilas y los carotenoides. Se analizarán sus estructuras bioquímicas y su biosíntesis, y se explicará además la organización de estos pigmentos en los sistemas fotosintéticos, que son complejos proteicos que colectan y convierten la energía luminosa en energía química.

261

Gang-related homicides in Los Angeles County.  

PubMed

The incidence of gang homicides in Los Angeles County has increased faster than that of non-gang homicides in the past decade. This study compares characteristics of gang homicide victims with those of non-gang homicide victims for the year 1987. In 1186 cases, gang members were more likely to be young Black men who died of gunshot wounds. Gang homicide victims were more likely to die of firearm injuries in the early evening, and were more likely to die in a relatively small area of Los Angeles County. Drive-by shooting was highly associated with gang homicide. PMID:8355004

Rogers, C

1993-07-01

262

Contributions of chemistry in early day Los Alamos  

SciTech Connect

During 1943--1945, the premier physics laboratory in the world was at Los Alamos, but chemistry contributions were vital. Major chemical impacts on the success of the Los Alamos wartime mission included electrochemistry, which found the true melting point of plutonium metal to be hundreds of degrees lower than anticipated. This discovery had profound simplifying effects regarding crucibles to contain molten plutonium and on its production. Other significant chemical contributions involved constant purification of plutonium for reuse, producing carrier-free gamma sources at unprecedented kilo-curie levels, and high polonium work. 8 refs.

Penneman, R.A.; Meade, R.A.

1990-01-01

263

The development of the atomic bomb, Los Alamos  

SciTech Connect

The historical presentation begins with details of the selection of Los Alamos as the site of the Army installation. Wartime efforts of the Army Corps of Engineers, and scientists to include the leader of Los Alamos, Robert Oppenheimer are presented. The layout and construction of the facilities are discussed. The monumental design requirements of the bombs are discussed, including but not limited to the utilization of the second choice implosion method of detonation, and the production of bomb-grade nuclear explosives. The paper ends with a philosophical discussion on the use of nuclear weapons.

Seidel, R.W.

1993-11-01

264

El comercio de los productos transgénicos: el estado del debate internacional  

Microsoft Academic Search

Los productos transgénicos mezclan aspectos contradictorios. La manipulación genética de cultivos permite desarrollar tanto productos con toxinas insecticidas, disminuyendo el uso de defensivos agrícolas que pueden dañar el medio ambiente, como alimentos con propiedades vitamínicas y proteicas, que pueden mejorar los indicadores sociales en los países en desa- rrollo. Por otra parte, se han abierto interrogantes acerca de los posibles

María Angélica Larach; División de Comercio Internacional

265

El dolor como terapia. La médula común de los campos de concentración nazis y franquistas  

Microsoft Academic Search

Los campos de concentración franquistas y los nazis evidencian un cuerpo común. En ambos se desarrollaba una terapia para los internos que tenía al cuerpo como vehículo de aprendizaje. El tratamiento político prescribía penalidades físicas — la suciedad, el hambre, la sed— y morales que debían conducir a los prisioneros a comprender la finalidad buscada por el Estado totalitario alemán

Mirta Núñez Díaz-Balart

2005-01-01

266

LOS MANTEROS DE LA CALLE FLORIDA: TEORÍA DE LA CAPITALIZACIÓN DEL VÍNCULO  

Microsoft Academic Search

El presente trabajo de revisión cuestiona de raíz la tesis de los no lugares y toma como objeto de estudio el conflicto acaecido en los últimos meses entre los manteros de la calle Florida y el Estado circunscripto a la ciudad de Buenos Aires. Para los primeros, existía un derecho a instalarse en un espacio público por motivos laborales mientras

Maximiliano Korstanje

2012-01-01

267

76 FR 53115 - Expansion of Foreign-Trade Zone 202; Los Angeles, CA  

Federal Register 2010, 2011, 2012, 2013

...Expansion of Foreign-Trade Zone 202; Los Angeles, CA Pursuant to its authority under the...Harbor Commissioners of the City of Los Angeles, grantee of Foreign-Trade Zone 202...expand FTZ 202 to include a site in Los Angeles, California, within the Los...

2011-08-25

268

77 FR 43656 - BNSF Railway Company-Abandonment Exemption-in Los Angeles County, CA  

Federal Register 2010, 2011, 2012, 2013

...Company--Abandonment Exemption--in Los Angeles County, CA BNSF Railway Company (BNSF...3-mile line of railroad owned by the Los Angeles County Metropolitan Transportation Authority...Line structure), in the City of Los Angeles, Los Angeles County, Cal. (the...

2012-07-25

269

MOVIMIENTOS SOCIALES PARA EL RECONOCIMIENTO DE LOS MOVIMIENTOS Y LA ECOLOGÍA POLÍTICA INDÍGENAS  

Microsoft Academic Search

Los movimientos sociales cortan a través de las clases sociales, lo étnico, niveles de educación, rural-urbana, etc., y a través de todos los niveles locales, regionales, estatales nacionales, internacionales y globales formando conexiones entre el medio ambiente y el desarrollo, la salud, los derechos civiles, derechos indígenas, etc. (KECK and SIKKINK 1992; BRECHER and COSTELLO 1994; CARRUTHERS 1995). Los movimientos

José G. Vargas-Hernández

270

LOS COMIT?S DE ?TICA DE INVESTIGACI?N BIOMEDICA Y PSICOSOCIAL EN BOLIVIA*  

PubMed Central

Este artículo reporta un estudio realizado en las ciudades de La Paz, Cochabamba, y Santa Cruz en Bolivia. Interesaba saber cuál era la situación de la bioética en Bolivia y cómo se estaba protegiendo a los sujetos de investigación. Luego de revisar algunos conceptos bioéticos, la legislación boliviana y los métodos del estudio, se dan a conocer los resultados del mismo, los cuales revelan gran desconocimiento respecto de cómo proteger los derechos de los sujetos, por la casi ausencia o el inadecuado funcionamiento de los comités de ética de la investigación.

Zwareva Mashiri, Elizabeth C.

2010-01-01

271

Ecosystem studies at the Los Medanos site, Eddy County, New Mexico. Volume I  

SciTech Connect

This report summarizes the results of biological studies conducted during 1980 at the Los Medanos site in southeastern New Mexico. The studies include: (1) densities and species composition of the avifauna of the Los Medanos site; (2) aquatic ecosystems of the lower Pecos drainage; (3) floristic studies at the Los Medanos site; (4) plant successional, grazing, trampling, and salt studies on the Los Medanos site; (5) soil and vegetation studies at the Los Medanos site; (6) arthropod and decomposition studies at the WIPP site; (7) amphibians, reptiles and mammals at the Los Medanos site; (8) vertebrate ecology at the Los Medanos site; and (9) statistical analysis and data management. 7 refs. (ACR)

Hart, J.S. (ed.)

1981-05-01

272

Needs assessment for fire department services and resources for the Los Alamos National Laboratory, Los Alamos, New Mexico. Final report  

SciTech Connect

This report has been developed in response to a request from the Los Alamos National Laboratory (LANL) to evaluate the need for fire department services so as to enable the Laboratory to plan effective fire protection and thereby: meet LANL`s regulatory and contractual obligations; interface with the Department of Energy (DOE) and other agencies on matters relating to fire and emergency services; and ensure appropriate protection of the community and environment. This study is an outgrowth of the 1993 Fire Department Needs Assessment (prepared for DOE) but is developed from the LANL perspective. Input has been received from cognizant and responsible representatives at LANL, DOE, Los Alamos County (LAC) and the Los Alamos Fire Department (LAFD).

NONE

1995-11-15

273

The toughness of living: The development and demise of the Los Angeles Actors' Theatre\\/Los Angeles Theatre Center, 1975--1991  

Microsoft Academic Search

In the history of The Los Angeles Actors' Theatre (LAAT) and in its 1985 metamorphosis into the Los Angeles Theatre Center (LATC), the company consistently served and reflect the concerns of its multicultural community: the city of Los Angeles. In addition to the mainstage productions, developmental outreach programming strategies included: a Latino Lab; a feminist workshop--the Women's Project and educational

Alan Wade Litsey

1993-01-01

274

NCI ofrece apoyo a quienes están necesitados después de los huracanes Katrina y Rita  

Cancer.gov

El Instituto Nacional del Cáncer (NCI), parte de los Institutos Nacionales de la Salud (NIH), está empeñado en ayudar a las miles de personas que han sido asoladas por los efectos de los huracánes Katrina y Rita. NCI está tratando de llegar a los públicos diversos para proporcionarles información relacionada con el cáncer que pueda ser compartida con exactitud y efectividad con quienes han sido afectados por los huracánes.

275

A survey of macromycete diversity at Los Alamos National Laboratory, Bandelier National Monument, and Los Alamos County; A preliminary report  

SciTech Connect

The authors have completed a 5-year survey (1991--1995) of macromycetes found in Los Alamos County, Los Alamos National Laboratory, and Bandelier National Monument. The authors have compiled a database of 1,048 collections, their characteristics, and identifications. The database represents 123 (98%) genera and 175 (73%) species reliably identified. Issues of habitat loss, species extinction, and ecological relationships are addressed, and comparisons with other surveys are made. With this baseline information and modeling of this baseline data, one can begin to understand more about the fungal flora of the area.

Jarmie, N.; Rogers, F.J. [Mycology Associates, Los Alamos, NM (United States)

1997-11-01

276

Dia de los Muertos: A Joyful Mexican Celebration  

ERIC Educational Resources Information Center

This brief article describes the history, traditions, and food of the Mexican holiday known as Dia de los Muertos, or the Day of the Day, and explores classroom and studio activities that teachers can do with their students. Teachers are urged to encourage students to explore the topic of the Day of the Dead, comparing it to other traditions and…

Markello, Carrie; Bean, Kathy

2005-01-01

277

Recent Earthquakes in California and Nevada: Los Angeles Special Map  

NSDL National Science Digital Library

This map of the Los Angeles, California area displays earthquake locations for the latest week, day, and hour. The user can click on map symbols and get information on time, date, magnitude, location, and depth. Earthquake information is updated within 5 minutes of an actual event or otherwise once an hour. The information is from the U. S. Geological Survey-Caltech Seismic Net.

278

Dia de los Muertos: A Joyful Mexican Celebration  

ERIC Educational Resources Information Center

|This brief article describes the history, traditions, and food of the Mexican holiday known as Dia de los Muertos, or the Day of the Day, and explores classroom and studio activities that teachers can do with their students. Teachers are urged to encourage students to explore the topic of the Day of the Dead, comparing it to other traditions and…

Markello, Carrie; Bean, Kathy

2005-01-01

279

Urban America: Policy Choices for Los Angeles and the Nation.  

ERIC Educational Resources Information Center

|This volume presents 13 essays on urban problems in the United States, particularly in Los Angeles (California) following the 1992 riots, and policy options for the future. Part 1 addresses policies of the past three decades; Part 2 looks at children, youth, and families; Part 3 discusses crime and criminal justice; and Part 4 examines public…

Steinberg, James B., Ed.; And Others

280

Los Alamos National Laboratory Weapons Neutron Research Facility  

SciTech Connect

The Weapons Neutron Research (WNR) spallation neutron source utilizes 800-MeV protons from the Los Alamos Meson Physics linac. The proton beam transport system, the target systems, and the data acquisition and control system are described. Operating experience, present status, and planned improvements are discussed.

Woods, R.

1981-01-01

281

Resource management technology: Los Alamos technical capabilities for emergency management  

SciTech Connect

This report examines FEMA mission requirements in the area of resource and emergency management. It reviews the experience of the Los Alamos National Laboratory in resource management technology consonant with FEMA's mission. This experience is presented in the form of internal appraisal of the following mission areas: Strategic Materials; Natural and Technological Disasters; Communications and Training; and Counterterrorism.

Killian, B.G.; Garner, S.D.; Mathews, K.L.; Wilson, M.G.; Planner, H.M.

1983-07-18

282

Los Alamos proton-storage-ring extraction system  

SciTech Connect

The unprecedented peak and average proton currents and extraction rates from the Proton Storage Ring (PSR) under construction at the Los Alamos National Laboratory present new problems in beam extraction. Activation caused by beam spill must be minimal to permit hands-on maintenance. Timing requirements are uncommonly stringent. Solutions to these problems are outlined below.

Hudgings, D.W.; Jason, A.J.

1981-01-01

283

Aristocracia fantástica: los moderados y la poética del gobierno representativo  

Microsoft Academic Search

La mayor parte de los ideólogos del moderantismo tras la implantación del régimen liberal fueron destacados teóricos de la estética que contribuyeron a fijar el canon del romanticismo en España. Este artículo investiga la influencia de las reflexiones estéticas de autores como Alberto Lista, Nicomedes Pastor Díaz y Alcalá Galiano en su teoría del gobierno representativo. El asunto de fondo

Pablo Sánchez León

2006-01-01

284

Sources of crime guns in Los Angeles, California  

Microsoft Academic Search

There is agreement in the literature that offenders often acquire guns through unregulated private encounters with friends, family members and petty criminals. Although anecdotes suggest that licensed gun dealers also play a role, most studies have ignored or discounted the possibility that dishonest retailers are a significant source of supply. This effort explores gun markets in Los Angeles by examining

Julius Wachtel

1998-01-01

285

Remedios urbanos: más allá de los debates teóricos  

Microsoft Academic Search

Los trabajos sobre globalización y espacio urbano se inscriben bajo dos corrientes. Una que apunta a mostrar las bondades de la globalización, y la necesidad de actuar sobre las ciudades para que se fortalezcan beneficiándose de sus efectos. Y otra que insiste en mostrar lo nocivo de este proceso, por ejemplo a través de crecientes indicadores de pobreza, exclusión y

Nubis Pulido; Delfina Trinca Fighera

2007-01-01

286

Food Buying Practices of Mexican Americans in East Los Angeles.  

ERIC Educational Resources Information Center

|As part of a pilot study of the nutritional status of Mexican American preschool children attending Head Start in East Los Angeles in the spring of 1969, questions were asked concerning their families' buying and food practices. This paper reports on the information obtained from the 21 questionnaires which were returned. Answers to the following…

Lewis, Jane S.; And Others

287

Los Angeles School Board Race Shatters Spending Records  

ERIC Educational Resources Information Center

|The price tag to win a seat in this week's primary election for the Los Angeles school board climbed to unprecedented levels, as a massive influx of outside cash has turned a local campaign into a national showdown pitting the long-standing influence of teachers' unions against the expanding imprint of deep-pocketed education activists. The high…

Maxwell, Lesli A.

2013-01-01

288

LOS ANGELES FIELD MODELING AND MEASUREMENT STUDY - 1976 (FIRST YEAR)  

EPA Science Inventory

In October 1976 a two-week field program was conducted in Los Angeles to evaluate in the field existing measurement methods for ambient concentrations of sulfuric acid aerosol and related sulfates, and to obtain preliminary data for the in-roadway concentrations of sulfates due t...

289

Smoking patterns among Los Alamos National Laboratory employees  

Microsoft Academic Search

Smoking patterns among 5507 employees at Los Alamos National Laboratory were investigated for those who underwent physical examinations by occupational physicians from 1978 to 1983. More male than female employees smoked, although differences in smoking rates between the sexes were not as large as differences observed for national smoking rates. Employees over 40 were more likely to smoke than younger

M. C. Mahoney; G. S. Wilkinson

1987-01-01

290

Annual Information Digest, Los Angeles Community Colleges, 1995-1997.  

ERIC Educational Resources Information Center

|Providing historical data up to 1996-97 on the nine colleges in the Los Angeles Community College District (LACCD), this statistical digest presents tables and graphs on student characteristics, enrollment trends, instructional programs, student performance and articulation, special services, and fiscal and personnel resources. Selected district…

Kelly, Dexter; And Others

291

Housing in Los Angeles: Affordable Housing for the Future.  

ERIC Educational Resources Information Center

|A 1988 mayoral committee assessed the seriousness of Los Angeles (California) housing problems and found that the city's housing efforts were sufficient in the 1960s, when the Federal Government took primary responsibility for housing and the average wage was adequate to support the cost of the average house or apartment. However, the following…

Los Angeles Blue Ribbon Committee for Affordable Housing, CA.

292

Los Alamos National Laboratory capability reviews - FY 2011 status  

Microsoft Academic Search

Capability reviews are the Los Alamos National Laboratory approach to assess the quality of its science, technology, and engineering (STE), and its integration across the Laboratory. There are seven capability reviews in FY 2011 reviews. The Weapons Science and Engineering review will be replaced by the National Nuclear Security Administration's Predictive Science Panel for 2011 . Beginning in 2011, third-year

Everett P

2011-01-01

293

Ozonation at the 900 cfs Los Angeles Water Purification Plant  

Microsoft Academic Search

In 1979. the California Safe Drinking Water Act established a new turbidity limit of 0.5 turbidity unit for drinking waters. To meet this new standard at the Owens River Aqueductplantin Los Angelesi aprocessinvolvingpreozonation and direct filtration was tested and selected. In addition to providing water which meets the required turbidity standard, the ozone process reduces THM levels by about 50%,

Paul W. Prendiville

1986-01-01

294

General Education at Los Medanos College: A Curricular Model.  

ERIC Educational Resources Information Center

Non-traditional courses recommended for the general education package at Los Medanos College are described. It is suggested that the core curriculum be six intra-disciplinary packages covering Behavioral Sciences, Social Sciences, Biological Sciences, Physical Sciences, Language Arts, and Humanistic Studies. Each semester, students would be…

Carhart, John I.; Collins, Charles C.

295

SCALE ECONOMIES AND POLICE DEPARTMENT CONSOLIDATION: EVIDENCE FROM LOS ANGELES  

Microsoft Academic Search

This paper tests for scale economies for police departments operating in Los Angeles County. Intergovernmental sharing in providing police services prevails within the county, suggesting that scale economies exist in producing this public good. Empirical analysis here rejects the hypothesis that police output is produced under increasing returns, which would be an efficiency explanation for the large degree of consolidation

MILES FINNEY

1997-01-01

296

Photoelectric injector designs at Los Alamos National Laboratory  

SciTech Connect

We will describe the photoelectric injector design philosophy and capabilities at Los Alamos National Laboratory. We will discuss our simulation ability and general considerations to minimize the space-charge and rf emittance growths. In particular, we will also outline a high frequency design without magnetic bunching and a low frequency design with magnetic bunching.

Carlsten, B.E.; Sheffield, R.L.; McVey, B.D.

1990-01-01

297

Linking Planning, Quality Improvement and IR: Los Angeles City College  

ERIC Educational Resources Information Center

|Stung by a negative accreditation review, Los Angeles City College established an administrative position and a planning process that is successfully creating a culture of continuous improvement. At the core of this success is a "plan-act-check" reinforcing systems loop that links planning, budgeting, and institutional research. (Contains 2…

Seymour, Daniel

2004-01-01

298

Los Alamos National Laboratory accelerated tru waste workoff strategies  

Microsoft Academic Search

During 1996, the Los Alamos National Laboratory (LANL) developed two transuranic (TRU) waste workoff strategies that were estimated to save $270 - 340M through accelerated waste workoff and the elimination of a facility. The planning effort included a strategy to assure that LANL would have a significant quantity (3000+ drums) of TRU waste certified for shipment to the Waste Isolation

S. T. Kosiewicz; I. R. Triay; P. Z. Rogers; D. V. Christensen

1997-01-01

299

General Education at Los Medanos College: A Curricular Model.  

ERIC Educational Resources Information Center

|Non-traditional courses recommended for the general education package at Los Medanos College are described. It is suggested that the core curriculum be six intra-disciplinary packages covering Behavioral Sciences, Social Sciences, Biological Sciences, Physical Sciences, Language Arts, and Humanistic Studies. Each semester, students would be…

Carhart, John I.; Collins, Charles C.

300

The Los Alamos Radiological Instrumentation and Calibration Facility  

Microsoft Academic Search

Los Alamos National Laboratory (LANL) has a rich history with respect to all health physics functions. The radiological calibration program has long been one of the pillars of the health physics programs at LANL. Because of the diversity of the hazards on the site, many health physics calibration capabilities are required. Some examples include beta-gamma calibrations, neutron remmeter calibrations, and

Eisele

1996-01-01

301

The Controlled-Air Incinerator at Los Alamos  

SciTech Connect

The Controlled-Air Incinerator (CAI) at Los Alamos is being modified and upgraded to begin routine operations treating low-level mixed waste (LLMW), radioactively contaminated polychlorinated biphenyl (PCB) wastes, low-level liquid wastes, and possibly transuranic (TRU) wastes. This paper describes those modifications. Routine waste operations should begin in late FY95.

Newmyer, J.N.

1994-04-01

302

Alternative transuranic waste management strategies at Los Alamos National Laboratory  

Microsoft Academic Search

As an integral part of the ongoing US Department of Energy waste management programs, several strategies have been identified and evaluated for the long-term management of defense transuranic (TRU) waste now buried or stored at the Los Alamos National Laboratory. The 14 alternatives evaluated are combinations of the following operations: (1) Continue present practices (CPP), (2) Engineered improvements (EI), (3)

L. J. Walker; W. R. Hansen; D. C. Nelson; G. Maestas; W. J. Wenzel; F. A. Guevara; J. L. Warren; J. C. Rodgers; J. M. Graf

1981-01-01

303

Post-Cold War Science and Technology at Los Alamos  

Microsoft Academic Search

Los Alamos National Laboratory serves the nation through the development and application of leading-edge science and technology in support of national security. Our mission supports national security by: ensuring the safety, security, and reliability of the U.S. nuclear stockpile; reducing the threat of weapons of mass destruction in support of counter terrorism and homeland defense; and solving national energy, environment,

John C. Browne

2002-01-01

304

Border City: Race and Social Distance in Los Angeles  

Microsoft Academic Search

It is fitting for the American Quarterly to inaugurate its move to USC with a special issue devoted to Los Angeles and the future of urban culture. Before the ink dried on the Treaty of Guadalupe Hidalgo, in truth before the United States expanded its national boundary through a land grab of Alta California and Mexico’s northern territory, Yankee boosters

Greg Hise

2004-01-01

305

Los indicadores de insustentabilidad urbana como indicadores de conflicto social  

Microsoft Academic Search

Las ciudades son ecológicamente insostenibles. Sus «huellas ecológicas» son muchos mayores que sus propios límites administrativos. Las ciudades procesan unas grandes cantidades de materiales y energía y excretan residuos de distintos tipos. Sin embargo, este artículo se pregunta de manera optimista si acaso no son las ciudades los lugares donde se producen las innovaciones tecnológicas ecoeficientes. Se pregunta también si

Joan Martínez Alier

2002-01-01

306

Los Angeles Street Kids: New Occupations for Life Program  

Microsoft Academic Search

In the same sense that health intervention focused on the daily occupations of the well?elderly can promote successful ageing, programs aimed at the daily occupations of at?risk youth may act as a potential deterrent to street gang activity. In the city of Los Angeles, thousands of young people come under the influence of gang culture and in turn, lead lifestyles

Carolyn Snyder; Florence Clark; Brian Young

1998-01-01

307

New 138Kv Cable Lines in Los Angeles  

Microsoft Academic Search

The first 138-kv underground transmission cables to be installed west of Chicago and the largest now in use at this voltage (except for short station runs) were placed in service during 1943 by the Los Angeles Department of Water and Power. While generally similar to 138-kv lines previously installed in the East this installation involves a number of novel design

Carroll G. Mansfield

1944-01-01

308

Risk Communication in Los Angeles: A Case Study  

Microsoft Academic Search

The communication program of the Los Angeles Department of Water and Power (LADWP) has been largely informational—messages have historically been passed from the utility to the public without citizens being involved in any substantive way in decisions about water quality issues. In 1985, however, when LADWP made plans to construct an aeration tower to strip contaminants from groundwater without notifying

Marjorie G. Shovlin; Sandra S. Tanaka

1990-01-01

309

The black community's reactions to the 1992 los angeles riot  

Microsoft Academic Search

This article is based on field (street) interviews with a sample of 227 black community members living and\\/or working in South Central Los Angeles at the time of the 1992 riot. The interview instrument comprises 20 questions designed to (1) ascertain the reactions and feelings of black community members to the riot; and (2) compare a sample of black participants

Komanduri S. Murty; Julian B. Roebuck; Gloria R. Armstrong

1994-01-01

310

Brief history of the Los Alamos laser programs  

SciTech Connect

The laser programs at Los Alamos began in 1969 to investigate the feasibility of laser-induced fusion. However, within a year they had been expanded to include a number of other applications including laser isotope separation. These programs now compose a substantial part of the Laboratory's research programs.

Boyer, K.

1983-01-01

311

SOFT FLOOR COVERING IN THE LOS ANGELES CITY SCHOOL DISTRICTS.  

ERIC Educational Resources Information Center

|A STUDY REGARDING THE INSTALLATION OF CARPET IN SCHOOLS IS DISCUSSED. THE PURPOSE OF THE STUDY WAS TO HAVE A CONSULTANT REVIEW UNDER THE DIRECTION OF THE DISTRICT BUILDING AND GROUNDS SERVICES ADMINISTRATOR OF THE LOS ANGELES CITY SCHOOL DISTRICTS, THE SOFT FLOOR COVERING INSTALLATIONS AT ARAGON AVENUE AND TWENTY-FOURTH STREET SCHOOLS. SECTIONS…

CUNLIFF, DONALD D.

312

Los Angeles Community College District Annual Report, 1993.  

ERIC Educational Resources Information Center

|This 1993 annual report provides information on student demographics, college programs, and educational finances in the Los Angeles Community College District (LACCD), which, with more than 117,000 students, is the largest community college district in the nation. The report begins with a statement from Donald Phelps, the outgoing chancellor of…

Los Angeles Community Coll. District, CA.

313

Los Angeles, California Tornado of March 1, 1983.  

National Technical Information Service (NTIS)

At 7:40 a.m. on March 1, 1983, the downtown metropolitan area of Los Angeles was struck by a tornado severe enough to cause significant structural damage to not only old buildings but also modern, engineered structures. The path of the tornado was such th...

1985-01-01

314

Dental Caries in Underprivileged Children of Los Angeles  

Microsoft Academic Search

:Objectives. The purpose of this study is to investigate the disease of dental caries among a population of poor, migrant, minority children in Los Angeles County. Methods. The study team developed an instrument to be completed by parents about their children's determinants of oral health, and adapted the Association of State and Territorial Dental Directors (ASTDD) protocol for conducting clinical

Hazam Seirawan; Conrado Barzaga; Roseann Mulligan; Sharon Faust

2011-01-01

315

Dental Caries in Underprivileged Children of Los Angeles  

Microsoft Academic Search

Objectives. The purpose of this study is to investigate the disease of dental caries among a population of poor, migrant, minority children in Los Angeles County. Methods. The study team developed an instrument to be completed by parents about their children's determinants of oral health, and adapted the Association of State and Territorial Dental Directors (ASTDD) protocol for conducting clinical

Hazam Seirawan; Conrado Barzaga; Roseann Mulligan; Sharon Faust

2011-01-01

316

Los Alamos free atomic tritium beta decay experiment  

SciTech Connect

An apparatus is under construction at Los Alamos to measure the beta spectrum of free tritium atoms and molecules. The tritium atoms decay in a gaseous windowless source and are analyzed by a Tret'yakov type toroidal field beta spectrometer. The ultimate sensitivity of the experiment to electron antineutrino mass is expected to be <10 eV.

Knapp, D.A.; Bowles, T.J.; Browne, J.C.; Burritt, T.H.; Cohen, J.S.; Helffrich, J.A.; Maley, M.P.; Martin, R.L.; Robertson, R.G.H.; Wilkerson, J.F.

1984-01-01

317

Diet and colon cancer in Los Angeles County, California  

Microsoft Academic Search

The diets of 746 colon cancer cases in Los Angeles County, California (USA) were compared with those of 746 controls matched on age, sex, race, and neighborhood. In both genders, total energy intake was associated with significantly increased risk, and calcium intake was associated with significantly decreased risk. These effects were reduced only slightly after adjustment for the nondietary risk

Ruth K. Peters; Malcolm C. Pike; David Garabrant; Thomas M. Mack

1992-01-01

318

[Los Alamos National Laboratory industrial applications and technology transfer  

SciTech Connect

In October 1989, the Los Alamos Economic Development Corporation (LAEDC) entered into a contract with the Industrial Applications office (IAO) of Los Alamos National Laboratory (LANL) whereby the LAEDC was to provide support services to IAO. More specifically, according to the Statement of Work in this contract The Los Alamos Economic Development Corporation shall assist the Los Alamos National Laboratory Industrial Applications Office in establishing and strengthening connections between potential entrepreneurs at the Laboratory and the business assistance community throughout New Mexico, directed toward enhancing the number, of successful start up businesses spinning off the Laboratory's technology base.'' As part of this contract and subsequent modifications thereof, the LAEDC was to perform seven tasks: 1. Provide business planning assistance to potential entrepreneurs. 2. (Assist IAO in preparing and distributing) informational materials on technology transfer. 3. (Organize and manage) meetings and seminars on technology transfer and entrepreneurship. 4. Identify new opportunities for technology transfer. 5. (Identify and implement programs for the) recognition of Laboratory Entrepreneurs. 6. Training Lab personnel, in the area of technology transfer and Laboratory industrial interactions. 7. Review and summarize prior New Mexico economic development studies. The purpose of this report, is to summarize the accomplishments of the LAEDC under its contract with IAO, and to fulfill its reporting requirements. This report covers the period from October 1989 to September 1992.

Not Available

1992-09-30

319

The Los Alamos Solid-State Optical Refrigerator  

Microsoft Academic Search

Optical refrigeration may provide the physical basis for solid-state cryocooling. Devices based on this physics would be vibrationless, compact, and free of electromagnetic interference. Having no moving parts and being pumped by a diode lasers, optical refrigerators would be rugged with operating lifetimes of years. Experiments at Los Alamos National Laboratory have demonstrated the basic physical principles of optical refrigeration.1

Richard I. Epstein; Bradley C. Edwards; Carl E. Mungan

320

Time Domain Survey of the Los Alamos Region, New Mexico.  

National Technical Information Service (NTIS)

A time domain electromagnetic sounding survey of the region surrounding the city of Los Alamos, New Mexico was carried out. The results show that a linear trough, trending northeast--southwest runs beneath the city. The southern boundary is somewhat to th...

1979-01-01

321

Mercury: The Los Alamos ICF KrF laser system  

Microsoft Academic Search

The Mercury KrF laser facility at Los Alamos is being built with the benefit of lessons learned from the Aurora system. An increased understanding of KrF laser engineering and the designed implementation of systems flexibility will permit Mercury to serve as a testbed for a variety of advanced KrF technology concepts.

S. J. Czuchlewski; G. W. York; I. J. Bigio; J. P. Brucker; D. E. Hanson; E. M. Honig; N. A. Kurnit; W. T. Leland; A. W. McCown; J. McLeod; E. Rose; S. Thomas; D. Thompson

1993-01-01

322

Nuevas infecciones emergentes: importancia en la salud de los niños  

Microsoft Academic Search

ResumenUna interacción compleja entre factores ambientales y humanos, incluyendo factores ecológicos, genéticos, políticos y socioeconómicos, es responsable de la emergencia y la resurgencia de enfermedades infecciosas. Estos factores poseen a menudo un efecto claro sobre los niños y, en consecuencia, las infecciones emergentes pueden ejercer impactos únicos sobre las poblaciones más jóvenes en términos de salud física y mental, así

Jean M. van Seventer; Amanda DeLoureiro; Davidson H. Hamer

2009-01-01

323

Turning Neighbors into Friends: The Los Angeles Camp Experience.  

ERIC Educational Resources Information Center

A camp for Los Angeles (California) children traumatized by war, community violence, and hatred gives them time to heal and feel safe. The camp's theme of reconciliation and nonviolence is expressed by an all-volunteer staff through community, teamwork, and cooperation. Nature's diversity is used to show how diverse groups can interact, thrive,…

Jenya, Judith

2002-01-01

324

Status of the ICF program at Los Alamos National Laboratory  

Microsoft Academic Search

In the Los Alamos program we are emphasizing the testing of targets uniquely designed for drive with the carbon dioxide (COâ) laser. The two major facilities for this study are the eight-beam Helios system and the Antares laser system. Some recent results to be discussed demonstrate the dominant effect of self-generated magnetic fields in controlling energy transport by hot electrons.

Rockwood

1982-01-01

325

ECONOMIC RESOURCES OF THE HOMELESS: EVIDENCE FROM LOS ANGELES  

Microsoft Academic Search

This paper examines the economic resources of homeless adults using a unique data set from Los Angeles. The homeless rely on a variety of sources for income; the two most common sources are the government and the family. Over 58% received government transfers in the 30 days prior to the interview, while one-third had received cash assistance from a family

ROBERT F. SCHOENI; PAUL KOEGEL

1998-01-01

326

Summary of environmental surveillance at Los Alamos during 1995  

SciTech Connect

Linking the Rio Grande Valley and the Jemez Mountains, New Mexico`s Pajarito Plateau is home to a world-class scientific institution. Los Alamos National Laboratory (or the Laboratory), managed by the Regents of the University of California, is a government-owned, Department of Energy-supervised complex investigating all areas of modern science for the purposes of national defense, health, conservation, and ecology. The Laboratory was founded in 1943 as part of the Manhattan Project, whose members assembled to create the first nuclear weapon. Occupying the campus of the Los Alamos Ranch School, American and British scientists gathered on the isolated mesa tops to harness recently discovered nuclear power with the hope of ending World War II. In July 1945, the initial objective of the Laboratory, a nuclear device, was achieved in Los Alamos and tested in White Sands, New Mexico. Today the Laboratory continues its role in defense, particularly in nuclear weapons, including developing methods for safely handling weapons and managing waste. For the past twenty years, the Laboratory has published an annual environmental report. This pamphlet offers a synopsis that briefly explains important concepts, such as radiation and provides a summary of the monitoring results and regulatory compliance status that are explained at length in the document entitled Environmental Surveillance at Los Alamos during 1995.

NONE

1996-10-01

327

Equilibrium and stability of the Los Alamos spheromak  

SciTech Connect

The open mesh flux conserver (MFC) on the Los Alamos spheromak (CTX) has been equipped with a large number of Rogowski loops measuring the current in the individual segments of the MFC, providing a complete picture of the surface current pattern induced by the equilibrium and oscillations of the confined plasma. An analysis was made of the data from these Rogowski loops.

Marklin, G.

1984-01-01

328

Deterministic charged-particle transport at Los Alamos: a survey  

SciTech Connect

A review of the application of S/sub n/ and diffusion to the transport of alpha particles and super-thermal electrons at Los Alamos is given. Emphasis is on solution techniques and numerical subtleties with numerous comparisons to analytic and Monte Carlo solutions.

Taggart, K.; Linnebur, E.; Wienke, B.; Cranfill, C.; Dana, A.

1982-01-01

329

SOFT FLOOR COVERING IN THE LOS ANGELES CITY SCHOOL DISTRICTS.  

ERIC Educational Resources Information Center

A STUDY REGARDING THE INSTALLATION OF CARPET IN SCHOOLS IS DISCUSSED. THE PURPOSE OF THE STUDY WAS TO HAVE A CONSULTANT REVIEW UNDER THE DIRECTION OF THE DISTRICT BUILDING AND GROUNDS SERVICES ADMINISTRATOR OF THE LOS ANGELES CITY SCHOOL DISTRICTS, THE SOFT FLOOR COVERING INSTALLATIONS AT ARAGON AVENUE AND TWENTY-FOURTH STREET SCHOOLS. SECTIONS…

CUNLIFF, DONALD D.

330

Potpourri of Los Alamos National Laboratory foam efforts  

SciTech Connect

This presentation provides an update on microcellular foam research efforts at Los Alamos. Topics include the influence of pressure on the phase separation of poly(4-methyl-1-pentene) from organic solution, a new concept of phase diagrams, physical testing of foams, and recent emulsion polymerization results.

Williams, J.M.; Wilkerson, M.H.; Wrobleski, D.A.

1986-01-01

331

Foci of Tuberculosis Transmission in Central Los Angeles  

Microsoft Academic Search

To identify sites of tuberculosis transmission and to determine the contribution of HIV-infected pa- tients to tuberculosis morbidity in an urban area, we prospectively evaluated 249 patients with cul- ture-proven tuberculosis in central Los Angeles. Restriction fragment length polymorphism (RFLP) analysis was performed on Mycobacterium tuberculosis isolates to identify patients infected with the same strain. Using RFLP and clinical and

PETER F. BARNES; ZHENHUA YANG; JANICE M. POGODA; SUSAN PRESTON-MARTIN; BRENDA E. JONES; MICHIKO OTAYA; LAURA KNOWLES; SYDNEY HARVEY; KATHLEEN D. EISENACH; M. DONALD CAVE

332

Hate Crime in Los Angeles County 1990. A Report to the Los Angeles County Board of Supervisors.  

ERIC Educational Resources Information Center

|A report on 1990 hate crimes in Los Angeles County (California) found 275 racially motivated hate crimes, 150 religiously motivated hate crimes, and 125 sexual orientation hate crimes. The data were collected primarily from law enforcement and community agencies. Of the racially motivated crimes, most were aimed at Blacks, followed by Asians.…

Hatcher, Bunny Nightwalker

333

Hate Crime in Los Angeles County 1990. A Report to the Los Angeles County Board of Supervisors.  

ERIC Educational Resources Information Center

A report on 1990 hate crimes in Los Angeles County (California) found 275 racially motivated hate crimes, 150 religiously motivated hate crimes, and 125 sexual orientation hate crimes. The data were collected primarily from law enforcement and community agencies. Of the racially motivated crimes, most were aimed at Blacks, followed by Asians. Jews…

Hatcher, Bunny Nightwalker

334

NEPA and NHPA- successful decommissioning of historic Manhattan Project properties at Los Alamos National Laboratory, Los Alamos, New Mexico  

Microsoft Academic Search

This paper describes experiences at Los Alamos National Laboratory during the process of planning and executing decommissioning and decontamination activities on a number of properties constructed as part of the Manhattan project. Many of these buildings had been abandoned for many years and were in deteriorating condition, in addition to being contaminated with asbestos, lead based paints and high explosive

E. D. McGehee; A. K. Pendergrass

1997-01-01

335

The Los Alamos Reservoir: A Gauge for Increased Erosion after the Cerro Grande Fire, Los Alamos, New Mexico  

Microsoft Academic Search

The Cerro Grande fire of May 2000 burned approximately 17,400 ha in the eastern Jemez Mountains in the vicinity of Los Alamos, New Mexico. Changes in surface characteristics caused by the fire, including the development of hydrophobic soils and the loss of vegetation and litter layers, resulted in major increases in runoff and erosion relative to pre-fire conditions. This study

A. Lavine; D. Katzman; S. L. Reneau; G. A. Kuyumjian; J. N. Gardner; D. V. Malmon

2001-01-01

336

Juventud y medios de comunicación. La televisión y los jóvenes: Aproximación estructural a la programación y los mensajes  

Microsoft Academic Search

RESUMEN La autora propone en este artículo un breve análisis sobre la relación que se establece entre los jóvenes y la televisión en cuanto a programación, contenidos y mensajes. Para ello parte del contexto en el que se desarrolla la programación actual, estrechamente vinculado a una determinada estructura informativa con su peculiar dinámica de mercado y sus propósitos, más o

Leticia García Reina

337

Tiger Team Assessment of the Los Alamos National Laboratory  

SciTech Connect

This report documents the Tiger Team Assessment of the Los Alamos National Laboratory (LANL) located in Los Alamos, New Mexico. LANL is operated for the US Department of Energy (DOE) by the University of California. The Tiger Team Assessment was conducted from September 23 to November 8, 1991, under the auspices of the DOE Office of Special Projects, Office of Assistant Secretary for Environment, Safety and Health. The assessment was comprehensive, encompassing environmental, safety, and health (ES H) disciplines; management; and contractor and DOE self-assessments. Compliance with applicable Federal, state, and local regulations; applicable DOE Orders; best management practices; and internal LANL site requirements was assessed. In addition, an evaluation of the adequacy and effectiveness of the DOE and the site contractors' management of ES H/quality assurance programs was conducted. This volume discusses findings concerning the environmental assessment.

Not Available

1991-11-01

338

Health insurance coverage among Chinese Americans in Los Angeles County.  

PubMed Central

OBJECTIVES: This paper examines the factors associated with health insurance coverage among Chinese Americans in Los Angeles County. METHODS: Data were obtained through interviews conducted in 1993 and 1994 with Chinese Americans (aged 18 through 65 years) residing in Los Angeles County. A multistage probability sample was used to select respondents. RESULTS: The final sample consisted of 1747 respondents, which represented an 82% response rate. Thirty-nine percent of the respondents in the survey were without health insurance at the time of the survey. CONCLUSIONS: Logistic regression analysis showed that marital status, length of residence in the United States, education, employment, and household income were associated with health insurance coverage among Chinese Americans.

Takeuchi, D T; Chung, R C; Shen, H

1998-01-01

339

Distributed processors and intelligent workstations at Los Alamos  

SciTech Connect

The Los Alamos National Laboratory is known for its interest in large-scale and scientific computation. However, since 1978, the Laboratory has developed distributed processing and is now developing a framework for support of microprocessor-based intelligent workstations. As practiced at Los Alamos, distributed processing means the distribution of minicomputers across a relatively large geographical area and the integration of them into a single network. Discussed in this paper are the motivations for the network, the communications technology used, some salient implementation factors, and advantages and disadvantages of distributed processing. Also discussed are the motivations for intelligent workstations, our categorization of workstations, the goals for each category, implementation plans, and some critical issues associated with them.

Buzbee, B.; Slocomb, C.

1983-01-01

340

Penetrating radiation: applications at Los Alamos National Laboratory  

NASA Astrophysics Data System (ADS)

Los Alamos has used penetrating radiography extensively throughout its history dating back to the Manhattan Project where imaging dense, imploding objects was the subject of intense interest. This interest continues today as major facilities like DARHT1 have become the mainstay of the US Stockpile Stewardship Program2 and the cornerstone of nuclear weapons certification. Meanwhile, emerging threats to national security from cargo containers and improvised explosive devices (IEDs) have invigorated inspection efforts using muon tomography, and compact x-ray radiography. Additionally, unusual environmental threats, like those from underwater oil spills and nuclear power plant accidents, have caused renewed interest in fielding radiography in severe operating conditions. We review the history of penetrating radiography at Los Alamos and survey technologies as presently applied to these important problems.

Watson, Scott; Hunter, James; Morris, Christopher

2013-09-01

341

Hazardous waste systems analysis at Los Alamos National Laboratory  

SciTech Connect

Los Alamos National Laboratory produces routine and non-routine hazardous waste as a by-product of mission operations. Hazardous waste commonly generated at the Laboratory includes many types of laboratory research chemicals, solvents, acids, bases, carcinogens, compressed gases, metals, and other solid waste contaminated with hazardous waste. The Los Alamos National Laboratory Environmental Stewardship Office has established a Hazardous Waste Minimization Coordinator to specifically focus on routine and non-routine RCRA, TSCA, and other administratively controlled wastes. In this process, the Waste Minimization Coordinator has developed and implemented a systems approach to define waste streams, estimate waste management costs and develop plans to implement avoidance practices, and develop projects to reduce or eliminate the waste streams at the Laboratory. The paper describes this systems approach.

Urioste, J.

1997-11-01

342

The Epidemiology of Thyroid Cancer in Los Angeles County  

PubMed Central

More than 300 new cases of thyroid cancer are diagnosed in Los Angeles County every year. The age-adjusted annual incidence rates of this disease for all races combined are 2.4 for males and 6.1 for females. Rates for women are more than twice rates for men in each major ethnic group. Blacks of both sexes have the lowest rates; Japanese, Chinese, other Asians and Spanish-surnamed whites all have rates that are as high as or higher than rates among non-Spanish-surnamed whites. Other demographic patterns include the excess of thyroid cancer among Jewish residents of Los Angeles. There have been an increase in thyroid cancer incidence and a decline in mortality for this disease in the United States over the past several decades. Several possible explanations can be made for these trends. Also, the risk factors for thyroid cancer deserve review. ImagesFigure 1.Figure 3.

Preston-Martin, Susan; Menck, Herman R.

1979-01-01

343

The engineering institute of Los Alamos National Laboratory  

SciTech Connect

Los Alamos National Laboratory (LANL) and the University of California, San Diego (UCSD) have taken the unprecedented step of creating a collaborative, multi-disciplinary graduate education program and associated research agenda called the Engineering Institute. The mission of the Engineering Institute is to develop a comprehensive approach for conducting LANL mission-driven, multidisciplinary engineering research and to improve recruiting, revitalization, and retention of the current and future staff necessary to support the LANL' s national security responsibilities. The components of the Engineering Institute are (1) a joint LANL/UCSD degree program, (2) joint LANL/UCSD research projects, (3) the Los Alamos Dynamic Summer School, (4) an annual workshop, and (5) industry short courses. This program is a possible model for future industry/government interactions with university partners.

Farrar, Charles R [Los Alamos National Laboratory; Park, Gyuhae [Los Alamos National Laboratory; Cornwell, Phillip J [Los Alamos National Laboratory; Todd, Michael D [UCSD

2008-01-01

344

Recent results in the Los Alamos compact torus program  

SciTech Connect

A Compact Toroid is a toroidal magnetic-plasma-containment geometry in which no conductors or vacuum-chamber walls pass through the hole in the torus. Two types of compact toroids are studied experimentally and theoretically at Los Alamos: spheromaks that are oblate in shape and contain both toroidal and poloidal magnetic fields, and field-reversed configurations (FRC) that are very prolate and contain poloidal field only.

Tuszewski, M.; Armstrong, W.T.; Barnes, C.W.

1983-01-01

345

Los Alamos National Laboratory's high-performance data system  

SciTech Connect

Los Alamos National Laboratory is designing a High-Performance Data System (HPDS) that will provide storage for supercomputers requiring large files and fast transfer speeds. The HPDS will meet the performance requirements by managing data transfers from high-speed storage systems connected directly to a high-speed network. File and storage management software will be distributed in workstations. Network protocols will ensure reliable, wide-area network data delivery to support long-distance distributed processing. 3 refs., 2 figs.

Mercier, C.; Chorn, G.; Christman, R.; Collins, B.

1991-01-01

346

Evolution of some Los Alamos flux compression programs  

SciTech Connect

When we were approached to give a general discussion of some aspects of the Los Alamos flux compression program, we decided to present historical backgrounds of a few topics that have some relevance to programs that we very much In the forefront of activities going on today. Of some thirty abstracts collected at Los Alamos for this conference, ten of them dealt with electromagnetic acceleration of materials, notably the compression of heavy liners, and five dealt with plasma compression. Both of these topics have been under investigation, off and on, from the time a formal flux compression program was organized at Los Alamos. We decided that a short overview of work done In these areas would be of some interest. Some of the work described below has been discussed in Laboratory reports that, while referenced and available, are not readily accessible. For completeness, some previously published, accessible work Is also discussed but much more briefly. Perhaps the most striking thing about the early work In these two areas is how primitive much of it was when compared to the far more sophisticated, related activities of today. Another feature of these programs, actually for most programs, Is their cyclic nature. Their relevance and/or funding seems to come land go. Eventually, many of the older programs come back into favor. Activities Involving the dense plasma focus (DPF), about which some discussions will be given later, furnish a classic example of this kind, coming Into and then out of periods of heightened interest. We devote the next two sections of this paper to a review of our work In magnetic acceleration of solids and of plasma compression. A final section gives a survey of our work In which thin foils are imploded to produce intense quantities of son x-rays. The authors are well aware of much excellent work done elsewhere In all of these topics, but partly because of space limitations, have confined this discussion to work done at Los Alamos.

Fowler, C.M.; Goforth, J.H.

1996-12-31

347

Automated medical information system of the Los Alamos Scientific Laboratory  

SciTech Connect

The Medical Information System (MIS) at the Los Alamos Scientific Laboratory automates the acquisition, storage, and retrieval of medical information concerning the nine thousand project-connected personnel. The MIS incorporates an on-line, interactive medical history questionnaire, mark sense form processing, and automated coronary risk assesment in the medical evaluation process. Also, MIS has created the ability for long-term study and comparison of employee health as well as made the physician's time more effective.

Eagan, G.D.; Grier, R.S.

1980-01-01

348

HTGR safety research at the Los Alamos National Laboratory  

SciTech Connect

This paper summarizes activities undertaken at the Los Alamos National Laboratory as part of the High-Temperature Gas-Cooled Reactor (HTGR) Safety Research Program sponsored by the US Nuclear Regulatory Commission. Technical accomplishments and analysis capabilities in six broad-based task areas are described. These tasks are: fission-product technology, primary-coolant impurities, structural investigations, safety instrumentation and control systems, accident delineation, and phenomena modeling and systems analysis.

Stroh, K.R.; Anderson, C.A.; Kirk, W.L.

1982-01-01

349

ACCELERATION OF LOS ALAMOS NATIONAL LABORATORY TRANSURANIC WASTE DISPOSITION  

Microsoft Academic Search

One of Los Alamos National Laboratory's (LANL's) most significant risks is the site's inventory of transuranic waste retrievably stored above and below-ground in Technical Area (TA) 54 Area G, particularly the dispersible high-activity waste stored above-ground in deteriorating facilities. The high activity waste represents approximately 50% (by activity) of the total 292,000 PE-Ci inventory remaining to be disposed. The transuramic

GERALD A

2007-01-01

350

Acceleration of Los Alamos National Laboratory transuranic waste disposition  

Microsoft Academic Search

One of Los Alamos National Laboratory's (LANL's) most significant risks is the site's inventory of transuranic waste retrievably stored above and below-ground in Technical Area (TA) 54 Area G, particularly the dispersible high-activity waste stored above-ground in deteriorating facilities. The high activity waste represents approximately 50% (by activity) of the total 292,000 PE-Ci inventory remaining to be disposed. The transuranic

G. A. OLeary; B. A. Palmer; T. P. Starke; A. K. Phelps

2007-01-01

351

Evaluation of the largest flotation cells at Minera Los Pelambres  

Microsoft Academic Search

The concentrator at Minera Los Pelambres currently processes 130,000tpd of Cu\\/Mo ore. The rougher circuit originally consisted of four flotation banks. In August 2006 the rougher circuit was enlarged adding two flotation banks, each one consisting of 5 cells of 250m3.This paper describes the metallurgical comparison between the new flotation banks and the old ones (130m3 cells) operating in parallel.

J. B. Yianatos; F. Henríquez; L. Tapia

2008-01-01

352

DAW structure for the NBS\\/Los Alamos racetrack microtron  

Microsoft Academic Search

The results of a testing program on the disk-and-washer (DAW) structure with tee supports are presented. These results have led to the design of a 2.4-m DAW linac for use as the preaccelerator section of the National Bureau of Standards (NBS)\\/Los Alamos racetrack microtron (RTM). This structure uses two tee supports for each pair of washers, instead of four, and

L. M. Young; J. M. Potter

1981-01-01

353

Los Alamos high-power proton linac designs  

Microsoft Academic Search

Proton accelerators for driving transmutation applications have beam power requirements in the range 40 MW to 400 MW, which corresponds to energy and current performance requirements in the range 800 MeV to 1600 MeV, and 50 mA to 250 mA. Linear accelerator designs aimed at providing these performance levels have been studied at Los Alamos for the past few years.

George P. Lawrence

1995-01-01

354

Los Alamos proton storage ring fast-extraction kicker system  

NASA Astrophysics Data System (ADS)

We describe the kicker system used by the Los Alamos Proton Storage Ring (PSR) for fast extraction of accumulated 800-MeV proton beam. The system has several severe constraints in terms of rise time, field quality, and magnet dimensions. These are, in turn, defined by characteristics of the stored beam, ring lattice, and the allowable activation of ring components. Design methods to meet the constraints are outlined here and we describe the novel modulators that produce the fast pulses required.

Power, J. F.; Blind, B.; Jason, A. J.

1985-05-01

355

Los Alamos x-ray characterization facilities for plasma diagnostics  

SciTech Connect

A summary is given of characteristics of x-ray sources used by Los Alamos National Laboratory to calibrate various x-ray diagnostic packages and components. Included are D.C. sourcs in electron impact and fluorescence modes, a pulsed laser source for soft x rays with 100 ps time resolution, Febetron pulsed electron impact sources, and both EUV and x-ray synchrotron beamlines.

Day, R.H.; Blake, R.L.; Stradling, G.L.; Trela, W.J.; Bartlett, R.J.

1986-01-01

356

Performance evaluation of LOS microwave radios using a channel simulator  

Microsoft Academic Search

This paper describes a line-of-sight (LOS) channel simulator that can be used for the laboratory evaluation of microwave radios. The simulator has a unique design, utilizes state-of-the-art microwave circuitry, and is completely under computer control. The hardware and software design concepts incorporated in the simulator are described. Results from tests conducted on a military microwave radio are presented. The results

J. A. Hoffmeyer; L. E. Pratt; T. J. Riley

1986-01-01

357

[Los Alamos National Laboratory industrial applications and technology transfer  

SciTech Connect

This report summarizes the accomplishments of the Los Alamos Economic Development Corporation (LAEDC) under its contract with the Industrial Applications Office (IAO). The LAEDC has: provided business planning assistance to potential entrepreneurs, assisted IAO in preparing and distributing informational materials on technology, organized and managed meetings and seminars on technology transfer and entrepreneurship, identified new opportunities for technology transfer, and identified and implemented programs for the recognition of Laboratory entrepreneurs.

Not Available

1991-10-31

358

Biomedical applications on laser technology at Los Alamos  

SciTech Connect

Los Alamos has a long history of research in laser technology, and over the past few years we have begun to build a program directing some of that technology to a variety of applications in biology and medicine. As examples, two of these activities will be described in this manuscript: the use of a laser interferometer to measure the microwave absorption spectrum of DNA, and spectral measurements of the secondary light produced during laser corneal ablation.

Bigio, I.J.; Loree, T.R.

1990-01-01

359

Development of the Los Alamos solid-state optical refrigerator  

Microsoft Academic Search

Laser-induced cooling of a solid by net anti-Stokes fluorescence, first experimentally demonstrated in 1995, can be the basis of a new type of cryocooler, an optical refrigerator. This article describes the physics and design issues of a practical optical refrigerator for operation at 77 K. In particular, the Los Alamos Solid-State Optical Refrigerator (LASSOR) which we are developing would have

Bradley C. Edwards; Melvin I. Buchwald; Richard I. Epstein

1998-01-01

360

The Los Alamos Solid-State Optical Refrigerator (LASSOR )Program  

Microsoft Academic Search

Recent work at Los Alamos National Laboratory has demonstrated the physical principles for a new type of solid- state cryocooler based on anti-Stokes fluorescence 1. From our laboratory work and computer simulations we estimate that a practical, first-generation, all-solid-state fluorescent cryocooler will have the following properties 2: • no vibrations • will not produce and is not susceptible to electromagnetic

B. C. Edwards; R. I. Epstein; T. R. Gosnell; C. E. Mungan

361

Unified GUI for the Los Alamos Radiation Transport Code System  

Microsoft Academic Search

Justine is a Unified Graphical User Interface (UGUI) which is used to define geometries using constructive solid geometric (CSG) operations on three-dimensional objects. These user defined geometries, along with other code specific parameters also controlled by Justine, are used by the Los Alamos Radiation Transport Code System (LARTCS), which includes the Radiation Transport Group`s (X-6) Monte Carlo and deterministic transport

S. R. Lee; D. G. Collins; J. Anderson

1994-01-01

362

Unified GUI for the Los Alamos Radiation Transport Code System  

Microsoft Academic Search

Justine is a unified graphical user interface (UGUI) used to define geometries using constructive solid geometric (CSG) operations on three-dimensional objects. These user-defined geometries, along with other code-specific parameters also controlled by Justine, are used by the Los Alamos Radiation Transport Code System (LARTCS). Justine enhances user productivity by aiding in problem setup and enhances the reliability of the LARTCS.

S. R. Lee; D. G. Collins; J. D. Fowler; H. G. Hughes; K. R. Koch; P. D. Soran; J. A. Takamine; K. A. Van Riper; J. W. Anderson; N. A. Hammar

1994-01-01

363

Los Alamos radiation transport code system on desktop computing platforms  

Microsoft Academic Search

The Los Alamos Radiation Transport Code System (LARTCS) consists of state-of-the-art Monte Carlo and discrete ordinates transport codes and data libraries. These codes were originally developed many years ago and have undergone continual improvement. With a large initial effort and continued vigilance, the codes are easily portable from one type of hardware to another. The performance of scientific work-stations (SWS)

J. F. Briesmeister; F. W. Brinkley; B. A. Clark; J. T. West

1990-01-01

364

Formaldehyde and other carbonyls in Los Angeles ambient air  

Microsoft Academic Search

From selective sampling and liquid chromatography analysis, ambient levels of carbonyl compounds as 2,4-dinitrophenylhydrazones have been measured in the Los Angeles area during severe photochemical pollution episodes. Gas-phase concentrations and diurnal profiles are presented for six carbonyls: formaldehyde (up to 48 ppb), acetaldehyde (less than or equal to 35 ppb), propanal (less than or equal to 14 ppb), butanal (less

Daniel Grosjean

1982-01-01

365

HIV Services Utilization in Los Angeles County, California  

Microsoft Academic Search

Recipients of HIV\\/AIDS prevention services in Los Angeles County California were surveyed in 2004 by 220 HIV prevention service\\u000a provider staff from 51 agencies funded by the Office of AIDS Programs and Policy. This resulted in 2,102 usable surveys for\\u000a cluster analysis purposes. This Countywide Risk Assessment Survey assessed demographics, sexual history, substance use, perceptions\\u000a regarding HIV\\/AIDS, and use of

Dennis G. Fisher; David Wishart; Grace L. Reynolds; Jordan W. Edwards; Lee M. Kochems; Michael A. Janson

2010-01-01

366

Climate Change and Adaptation Planning on the Los Angeles Aqueduct  

Microsoft Academic Search

This study provides an assessment of the potential impacts of climate change on the Eastern Sierra Nevada snowpack and snowmelt timing, using a combination of empirical (i.e., data-based) models, and computer simulation models forced by GCM-projected 21st century climatology (IPCC 2007 AR4 projections). Precipitation from the Eastern Sierra Nevada is one of the main water sources for Los Angeles' more

S. B. Roy; R. C. Bales; M. C. Costa-Cabral; L. Chen; E. P. Maurer; N. L. Miller; W. B. Mills

2009-01-01

367

Progress report on the NBS\\/Los Alamos RTM  

Microsoft Academic Search

The NBS-Los Alamos 200 MeV Racetrack Microtron (RTM) is being built under a program aimed at developing the technology needed for high-current intermediateenergy CW electron accelerators. In this report we give an overview of the present status of the project. Recent progress includes: complettion of testing of the 100 keV chopper-buncher system demonstrating a normalized emittance well under the design

S. Penner; R. L. Ayres; R. Biddle; R. I. Cutler; P. H. Debenham; E. R. Lindstrom; D. L. Mohr; J. E. Rose; M. P. Uterweger; M. A. D. Wilson; E. R. Martin; J. E. Stovall; P. J. Tallerico; L. Wilkerson; L. M. Young

1985-01-01

368

Water supply at Los Alamos during 1996. Progress report  

SciTech Connect

Production of potable municipal water supplies during 1996 totaled about 1,368.1 million gallons from wells in the Guaje, Pajarito, and Otowi well fields. There was no water used from either the spring gallery in Water Canyon or from Guaje Reservoir during 1996. About 2.6 million gallons of water from Los Alamos Reservoir was used for lawn irrigation. The total water usage in 1996 was about 1,370.7 million gallons, or about 131 gallons per day per person living in Los Alamos County. Groundwater pumpage was up about 12.0 million gallons in 1996 compared with the pumpage in 1995. This report fulfills requirements specified in US Department of Energy (DOE) Order 5400.1 (Groundwater Protection Management Program), which requires the Los Alamos National Laboratory (LANL) to monitor and document groundwater conditions below Pajarito Plateau and to protect the regional aquifer from contamination associated with Laboratory operations. Furthermore, this report also fulfills special conditions by providing information on hydrologic characteristics of the regional aquifer, including operating conditions of the municipal water supply system.

McLin, S.G.; Purtymun, W.D.; Maes, M.N.; Longmire, P.A.

1997-12-01

369

Overview of laser technology at Los Alamos National Laboratory  

SciTech Connect

Los Alamos National Laboratory has had a long history of involvement in laser sciences and has been recognized both for its large laser programs and smaller scale developments in laser technology and applications. The first significant program was with the Rover nuclear-based rocket propulsion system in 1968 to study laser initiated fusion. From here applications spread to programs in laser isotope separation and development of large lasers for fusion. These programs established the technological human resource base of highly trained laser physicists, engineers, and chemists that remain at the Laboratory today. Almost every technical division at Los Alamos now has some laser capability ranging from laser development, applications, studies on nonlinear processes, modeling and materials processing. During the past six years over eight R&D-100 Awards have been received by Los Alamos for development of laser-based techniques and instrumentation. Outstanding examples of technology developed include LIDAR applications to environmental monitoring, single molecule detection using fluorescence spectroscopy, a laser-based high kinetic energy source of oxygen atoms produced by a laser-sustained plasma, laser-induced breakdown spectroscopy (LIBS) for compositional, analysis, thin film high temperature superconductor deposition, multi-station laser welding, and direct metal deposition and build-up of components by fusing powder particles with a laser beam.

Lewis, G.K.; Cremers, D.A.

1994-09-01

370

Los Alamos Science: The Human Genome Project. Number 20, 1992  

SciTech Connect

This article provides a broad overview of the Human Genome Project, with particular emphasis on work being done at Los Alamos. It tries to emphasize the scientific aspects of the project, compared to the more speculative information presented in the popular press. There is a brief introduction to modern genetics, including a review of classic work. There is a broad overview of the Genome Project, describing what the project is, what are some of its major five-year goals, what are major technological challenges ahead of the project, and what can the field of biology, as well as society expect to see as benefits from this project. Specific results on the efforts directed at mapping chromosomes 16 and 5 are discussed. A brief introduction to DNA libraries is presented, bearing in mind that Los Alamos has housed such libraries for many years prior to the Genome Project. Information on efforts to do applied computational work related to the project are discussed, as well as experimental efforts to do rapid DNA sequencing by means of single-molecule detection using applied spectroscopic methods. The article introduces the Los Alamos staff which are working on the Genome Project, and concludes with brief discussions on ethical, legal, and social implications of this work; a brief glimpse of genetics as it may be practiced in the next century; and a glossary of relevant terms.

Cooper, N G; Shea, N [eds.

1992-01-01

371

Paleoenvironmental and paleoclimatic investigations on Isla de los Estados, Argentina  

NASA Astrophysics Data System (ADS)

The expedition in November-December 2005 to Isla de los Estados (Staten Island) off the southeastern tip of South America was a cooperative venture between Lund University (LU) and Stockholm University (SU) in Sweden and the CADIC-CONICET Institute in Ushuaia, Argentina. The aim of the expedition was threefold: (1) to extend the Swedish paleoclimatic "ATLANTIS"-project (Greenland, Iceland, Faroe Islands, Azores, Grenada, Tristan da Cunha; PI S Björck) to the southern part of the South American continent, (2) to connect earlier glacial and climate history reconstructions from the Antarctic Peninsula to equivalents north of the Drake Passage in southernmost South America, and (3) to complement paleo-information available from the Tierra del Fuego mainland with information from Isla de los Estados. Focus was on two areas in the northern and north-western part of the island, Bahía Colnett and Bahia Crossley. Detailed geomorphologic and stratigraphic mapping of glacial deposits were combined with sampling sediments for OSL dating. To reconstruct the paleoclimatic development of Isla de los Estados since the last ice retreat, four main peat bog/lake sites were cored and sampled. In addition, living trees of Nothofagus and old logs preserved in the peat were sampled for dendrochronological and dendroclimatological studies. Preliminary results show that the deglaciation of the study area occurred before 16500 cal yr BP. Detailed multi- proxy analyses of the four sequences are under way and first results will be presented.

Björck, S.; Fernandez, M.; Hjort, C.; Ljung, K.; Martinez, O.; Möller, P.; Ponce, F.; Rabassa, J.; Roig, F.; Unkel, I.; Wohlfarth, B.

2007-05-01

372

76 FR 28453 - Cesar Chavez Special Resource Study-Alameda, Fresno, Imperial, Kern, Los Angeles, Monterey...  

Federal Register 2010, 2011, 2012, 2013

...Imperial, Kern, Los Angeles, Monterey, Riverside, San Benito, San Diego, San Francisco, San Joaquin, Santa Barbara...Imperial, Kern, Los Angeles, Monterey, Riverside, San Benito, San Diego, San Francisco, San Joaquin, Santa...

2011-05-17

373

75 FR 65512 - Raleigh Film and Television Studios, LLC, Los Angeles, CA; Notice of Affirmative Determination...  

Federal Register 2010, 2011, 2012, 2013

...TA-W-72,587] Raleigh Film and Television Studios, LLC, Los Angeles, CA; Notice of Affirmative Determination Regarding Application...workers of Raleigh Film and Television Studios, LLC, Los Angeles, California (the subject firm). The Notice of...

2010-10-25

374

76 FR 70051 - Establishment of Class D and Amendment of Class E Airspace; Los Angeles, CA  

Federal Register 2010, 2011, 2012, 2013

...Airspace Docket No. 11-AWP-6] Establishment of Class D and Amendment of Class E Airspace; Los Angeles, CA AGENCY: Federal Aviation...SUMMARY: This action establishes Class D airspace at Los Angeles International...

2011-11-10

375

Ecosystem Studies at the Los Medanos Site, Eddy County, New Mexico. Volume I.  

National Technical Information Service (NTIS)

This report summarizes the results of biological studies conducted during 1980 at the Los Medanos site in southeastern New Mexico. The studies include: (1) densities and species composition of the avifauna of the Los Medanos site; (2) aquatic ecosystems o...

J. S. Hart

1981-01-01

376

4 Gestión de las prácticas de seguridad de los alimentos: El ...  

Center for Food Safety and Applied Nutrition (CFSAN)

Text Version... como control para los virus no sea efectiva debido a que muchos virus transmitidos por los alimentos parecen tener resistencia al calor que excede ... More results from www.fda.gov/downloads/food/guidanceregulation

377

Desarrollo y utilización de habilidades: el caso de los migrantes en León, Guanajuato, procedentes de la Ciudad de México  

Microsoft Academic Search

En este artículo se presenta una investigación sobre el desarrollo y el uso de habilidades de los migrantes provenientes de la Ciudad de México que radican en León, Guanajua- to. Los datos del Censo General de Población y Vivienda 2000 relativos a los habitantes de León revelan que los migrantes provenientes de los grandes centros urbanos tienen, en promedio, mayores

Ricardo Sabatés Aysa

378

Taxonomía de asteroides y cometas basada en los espectros de Lyapunov  

NASA Astrophysics Data System (ADS)

Estudiaremos dos familias de objetos que sufren encuentros cercanos con planetas, a saber: la familia de cometas de Júpiter (JF) y los asteroides cercanos a la Tierra (NEAs). El movimiento de estos objetos es caótico en una escala de tiempo corta. Más aún, debido a los cambios erráticos en los elementos orbitales, la comparación de los valores actuales da poca información acerca de la posible vinculación dinámica entre los objetos de una misma familia. Calculamos una estimación finita de los Exponentes Característicos de Lyapunov (LCE), los llamamos Indicadores Característicos de Lyapunov (LCI) para ambas familias y analizamos las características del espacio de fase donde tiene lugar el movimiento de estos objetos. Integrando en un período suficientemente largo (e.g. 20000 años), encontramos que el LCI alcanza un valor cuasi-constante. La mayoría de los miembros de ambas familias muestran una concentración de los tiempos de Lyapunov (inverso del LCI) de alrededor de 50-100 años (Tancredi, 1995, Astron & Astrop., 299, 288). La concentración de los tiempos de Lyapunov es mayor para la familia de Júpiter que para los NEAs. Entre estos últimos, la menor dispersión se da para aquellos que cruzan la órbita de la Tierra. Se demostró que el espectro de los `indicadores locales' (Froeschlé et. al., 1990, Cel. Mec. 56, 307) o ``números de estiramiento'' (Voglis and Contopoulos, 1994, J. Phys. A 26, 4899) (relacionados con el LCI) son invariantes y nos dan una información más completa sobre el comportamiento caótico. Mediante la comparación de espectros discutimos la similitud entre los objetos de una misma familia y analizamos las diferentes posibles rutas al caos. Los espectros se clasifican mediante la comparación de los momentos de las distribuciones de los `números de estiramiento'. Aplicamos un método de agrupamiento jerárquico (Zappala et. al., 1990, Astron. J. 100, 2030) para identificar ``familias'' de espectros (grupos de espectros similares). Mediante esta clasificación se discutirá la hipótesis del origen de la familia de Júpiter a través del splitting de un cometa gigante.

Tancredi, G.; Motta, V.; Froeschlé, C.

379

Manejo de los recursos costeros y marinos en América Latina y el Caribe  

Microsoft Academic Search

El presente documento (ENV-128) expone una estrategia de manejo de los recursos costeros y marinos para el Banco Interamericano de Desarrollo. El manejo costero integrado se presenta como una actividad amplia y polivalente encaminada por un lado a mejorar la calidad de vida de las comunidades que dependen de los recursos costeros y, por otro, a ayudar a los estados

Michele H. Lemay

1998-01-01

380

¿Los consumidores colombianos de combustibles reciben subsidios o, en neto, pagan impuestos?  

Microsoft Academic Search

El objetivo del documento es analizar los subsidios e impuestos al consumo de combustibles en Colombia y verificar si los primeros han sido mayores que los segundos. El marco conceptual es un modelo simple de equilibrio parcial donde existen sólo dos agentes: el sector público (paga subsidios y cobra impuestos) y el consumidor de combustibles (recibe subsidios y paga impuestos).

Hernán Rincón

2008-01-01

381

UN ANÁLISIS COMPARADO DE LOS MODELOS APLICADOS PARA LA FINANCIACIÓN DE LAS UNIVERSIDADES ANDALUZAS Y VALENCIANAS  

Microsoft Academic Search

Hasta fechas relativamente recientes los mecanismos de financiación de tipo incrementalista no suponían graves tensiones a la hora de distribuir fondos entre los diferentes servicios públicos. Pero en el actual contexto de persistente déficit de las Administraciones Públicas el diseño y utilización de sistemas de financiación que intenten racionalizar la asignacion de los recursos cobra un especial protagonismo, sobre todo

José Sánchez; Campillo Dolores; Moreno Herrero

382

Músico, Exilio y Memoria — La Lucha Por Los Restos De Manuel De Falla  

Microsoft Academic Search

En vísperas de la guerra civil, España era uno de los centros intelectuales más efervescentes de Europa. A partir de 1898, tras perder los últimos restos del Imperio en el Nuevo Mundo (Cuba y Puerto Rico), y particularmente en los años de la Segunda República (1931–1936), se llevaron a cabo apasionantes debates sobre cuestiones de identidad nacional y el sendero

Raanan Rein

1996-01-01

383

Movilizaciones étnicas y crítica civilizatoria. Un cuestionamiento a los proyectos estatales en América Latina  

Microsoft Academic Search

Resumen La exposición de la historia y las motivaciones occidentales en las coyunturas de expansión colonial, así como las lógicas políticas de los estados uninacionales que continuaron su dominio sobre los pueblos nativos, han sido abordadas desde muy distintos puntos de vista. Sin embargo, creo que no se ha insisti- do los suficiente sobre las transformaciones sufridas por las colectividades

MIGUEL ALBERTO BARTOLOMÉ

384

33 CFR 110.214 - Los Angeles and Long Beach harbors, California.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Los Angeles and Long Beach harbors, California... Anchorage Grounds § 110.214 Los Angeles and Long Beach harbors, California...directed by the Captain of the Port Los Angeles-Long Beach, the pilot stations...

2009-07-01

385

40 CFR 52.263 - Priority treatment for buses and carpools-Los Angeles Region.  

Code of Federal Regulations, 2010 CFR

...treatment for buses and carpools-Los Angeles Region. 52.263 Section 52.263...treatment for buses and carpoolsâLos Angeles Region. (a) Definitions: (1...regulation is applicable in the Metropolitan Los Angeles Intrastate Air Quality Control Region...

2010-07-01

386

75 FR 71455 - The Jewelry Stream, Los Angeles, CA; Notice of Affirmation Determination Regarding Application...  

Federal Register 2010, 2011, 2012, 2013

...TA-W-73,145] The Jewelry Stream, Los Angeles, CA; Notice of Affirmation Determination...Manufacturing, Inc. and The Jewelry Stream, Los Angeles, California. The termination notice...Manufacturing, Inc. and The Jewelry Stream, Los Angeles, California--is not one firm but...

2010-11-23

387

76 FR 35946 - BNSF Railway Company-Abandonment Exemption-in Los Angeles County, CA.  

Federal Register 2010, 2011, 2012, 2013

...Company--Abandonment Exemption--in Los Angeles County, CA. On May 31, 2011, BNSF...4.85 miles of rail line owned by Los Angeles County Metropolitan Transportation Authority...grade crossing, in Arcadia, in Los Angeles County, CA (the Line). The Line...

2011-06-20

388

76 FR 14103 - The Jewelry Stream; Los Angeles, CA, Notice of Negative Determination on Reconsideration  

Federal Register 2010, 2011, 2012, 2013

...TA-W-73,145] The Jewelry Stream; Los Angeles, CA, Notice of Negative Determination...former workers of The Jewelry Stream, Los Angeles, California. On November 23, 2010...Jewelry Stream, 2520 W. 6th Street, Los Angeles, California'') is not one firm...

2011-03-15

389

33 CFR 110.214 - Los Angeles and Long Beach harbors, California.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Los Angeles and Long Beach harbors, California... Anchorage Grounds § 110.214 Los Angeles and Long Beach harbors, California...directed by the Captain of the Port Los Angeles-Long Beach, the pilot stations...

2010-07-01

390

77 FR 66499 - Environmental Impact Statement: San Bernardino and Los Angeles Counties, CA  

Federal Register 2010, 2011, 2012, 2013

...Impact Statement: San Bernardino and Los Angeles Counties, CA AGENCY: Federal Highway...highway project in San Bernardino and Los Angeles Counties, California. DATES: The public...approximately 2 miles west of the Los Angeles/San Bernardino County line in the...

2012-11-05

391

40 CFR 52.263 - Priority treatment for buses and carpools-Los Angeles Region.  

Code of Federal Regulations, 2010 CFR

...treatment for buses and carpools-Los Angeles Region. 52.263 Section 52.263...treatment for buses and carpoolsâLos Angeles Region. (a) Definitions: (1...regulation is applicable in the Metropolitan Los Angeles Intrastate Air Quality Control Region...

2009-07-01

392

The Los Angeles Community Development Bank: The Possible Pitfalls of Public-Private Partnerships  

Microsoft Academic Search

In response to the 1992 Los Angeles riots, the federal government, city and county officials, commercial banks and community leaders established the nonprofit Los Angeles Community Development Bank (L ACDB). This public-private partnership was a new development model, designed to spur economic growth in some of Los Angeles' most disadvantaged areas. The L ACDB was capitalized with $435 million from

Julia Sass Rubin; Gregory M. Stankiewicz

2001-01-01

393

Direct conversion of LOS acceleration data to vertical gravity anomalies -A new approach  

Microsoft Academic Search

Lunar and planetary data in the form of line-of-sight (LOS) components cannot be used for conventional geophysical modelling, and current methods for the inversion of LOS data yield nonunique or poorly constrained results as well as results with low spatial resolution. An alternative method for the use of LOS data is presented which is predicated on the fact that three

A. W. G. Kunze

1983-01-01

394

Análisis de la Relevancia de los Activos Intangibles en las Empresas Españolas: Un Estudio Empírico  

Microsoft Academic Search

Resumen.- Sin duda, uno de los temas que se presenta más polémico en la empresa actual y que afecta a distintas áreas de la organización es el de los activos intangibles. Se ha pasado de una empresa considerada como un conjunto de recursos materiales a una empresa como conjunto de conocimientos en la que ya no solamente los activos intangibles

Isabel Gallego Álvarez; Luis Rodríguez Domínguez

395

Desarrollos recientes en los instrumentos para integrar la RSE a las operatorias de las empresas  

Microsoft Academic Search

El tema de la responsabilidad social empresaria (RSE) ha ido adquiriendo en los últimos años una impensada difusión en el mundo corporativo que, de alguna manera parecería estar vinculado con una generalizada aceptación de una concepción de una responsabilidad corporativa ampliada hacia los llamados stakeholders. A fin de poder evaluar los reales alcances que hoy tiene la RSE en el

Luisa Montuschi

2010-01-01

396

Los tratamientos psicológicos en la fobia social infantil y adolescente: una revisión cualitativa  

Microsoft Academic Search

Se presentan los resultados de un estudio cualitativo de revisión de la eficacia de los tratamientos psicológicos utilizados en la fobia social en niños y adolescentes. Se localizaron 26 investigaciones: 5 artículos son diseños de caso único, 6 presentan los datos de un solo grupo tratado y aportan medidas pretest-postest y 16 informes son grupos de comparación entre tratamientos psicológicos

Ana Isabel Rosa Alcázar; Pablo J. Olivares-Olivares; Marina Iniesta

2009-01-01

397

La evaluación como proceso de legitimidad: la opinión de los alumnos. Reporte de una experiencia  

Microsoft Academic Search

En este trabajo se presentan diversas consideraciones sobre la importancia de legitimar la operación social y la gestión institucional en las organizaciones educativas, considerando que uno de los elementos estriba en el derecho a opinar de los alumnos sobre el desempeño docente de sus profesores. En el trabajo se reporta el análisis de 26 010 cuestionarios contestados por los alumnos

FELIPE TIRADO SEGURA; ALEJANDRO MIRANDA DÍAZ; Y ANDRÉS SÁNCHEZ MOGUEL

2007-01-01

398

Reconnaissance of geothermal resources of Los Angeles County, California  

SciTech Connect

Thermal waters produced from large oil fields are currently the most important geothermal resources in Los Angeles County. Otherwise, the County does not appear to have any large, near-surface geothermal resources. The oil fields produce thermal water because of both the moderate depths of production and normal to above-normal geothermal gradients. Gradients are about 3.0-3.5/sup 0/C/100 meters in the Ventura Basin and range from that up to about 5.5-6.0/sup 0/C/100 meters in the Los Angeles Basin. The hottest fields in the County are west of the Newport-Inglewood Structural Zone. The Los Angeles Basin has substantially more potential for uses of heat from oil fields than does the Ventura Basin because of its large fields and dense urban development. Produced fluid temperatures there range from ambient air to boiling, but most are in the 100-150/sup 0/F range. Daily water production ranges from only a few barrels at some fields to over a million barrels at Wilmington Oil Field; nearly all fields produce less than 50,000 barrels/day. Water salinity generally ranges from about 15,000-35,000 mg/liter NaCl. Fields with the most promise as sources of heat for outside applications are Wilmington, Torrance, Venice Beach, and Lawndale. The centralized treatment facilities are the most favorable sites for extraction of heat within the oil fields. Because of the poor water quality heat exchangers will likely be required rather than direct circulation of the field water to users. The best sites for applications are commercial-industrial areas and possibly institutional structures occupied by large numbers of people.

Higgins, C.T.

1981-01-01

399

76 FR 14698 - Raleigh Film and Television Studios, LLC, Los Angeles, CA; Notice of Negative Determination on...  

Federal Register 2010, 2011, 2012, 2013

...Film and Television Studios, LLC, Los Angeles, CA; Notice of Negative Determination...Film and Television Studios, LLC, Los Angeles, California (the subject firm). The...Film and Television Studios, LLC, Los Angeles, California. Signed in...

2011-03-17

400

76 FR 35369 - Proposed Establishment of Class D and Amendment of Class E Airspace; Los Angeles, CA  

Federal Register 2010, 2011, 2012, 2013

...Class D and Amendment of Class E Airspace; Los Angeles, CA AGENCY: Federal Aviation Administration...proposes to establish Class D airspace at Los Angeles International Airport, Los Angeles, CA. Controlled airspace is necessary to...

2011-06-17

401

Los Alamos safeguards program overview and NDA in safeguards  

SciTech Connect

Over the years the Los Alamos safeguards program has developed, tested, and implemented a broad range of passive and active nondestructive analysis (NDA) instruments (based on gamma and x-ray detection and neutron counting) that are now widely employed in safeguarding nuclear materials of all forms. Here very briefly, the major categories of gamma ray and neutron based NDA techniques, give some representative examples of NDA instruments currently in use, and cite a few notable instances of state-of-the-art NDA technique development. Historical aspects and a broad overview of the safeguards program are also presented.

Keepin, G.R.

1988-01-01

402

Groundwater level status report for 2010, Los Alamos National Laboratory  

SciTech Connect

The status of groundwater level monitoring at Los Alamos National Laboratory in 2010 is provided in this report. This report summarizes groundwater level data for 194 monitoring wells, including 63 regional aquifer wells (including 10 regional/intermediate wells), 34 intermediate wells, 97 alluvial wells, and 12 water supply wells. Pressure transducers were installed in 162 monitoring wells for continuous monitoring of groundwater levels. Time-series hydrographs of groundwater level data are presented along with pertinent construction and location information for each well. The report also summarizes the groundwater temperatures recorded in intermediate and regional aquifer monitoring wells and seasonal responses to snowmelt runoff observed in intermediate wells.

Koch, Richard J.; Schmeer, Sarah

2011-03-01

403

Groundwater level status report for 2009, Los Alamos National Laboratory  

SciTech Connect

The status of groundwater level monitoring at Los Alamos National Laboratory in 2009 is provided in this report. This report summarizes groundwater level data for 179 monitoring wells, including 55 regional aquifer wells (including 11 regional/intermediate wells), 26 intermediate wells, 98 alluvial wells, and 12 water supply wells. Pressure transducers were installed in 161 monitoring wells for continuous monitoring of groundwater levels. Time-series hydrographs of groundwater level data are presented along with pertinent construction and location information for each well. The report also summarizes the groundwater temperatures recorded in intermediate and regional aquifer monitoring wells.

Koch, Richard J.; Schmeer, Sarah

2010-03-01

404

Superconducting RF Lab Facility Upgrades at Los Alamos  

SciTech Connect

Research and testing of multi-cell superconducting cavities demands extensive contamination control resources to achieve high-cavity fields. Facility upgrades at Los Alamos National Laboratory (LANL) included the modernization of test equipment, expanding and modernizing cleanroom facilities, improving safety, and expanding the high-pressure rinse cleaning process equipment. Each upgrade was integrated into the facility to enable users to assemble prototype cryomodules. The scope of the upgrades, the new installed capability, and budget and schedule for certain aspects of the project are discussed in this paper.

Katonak, D.J.; Rusnak, B.

1999-03-01

405

Groundwater level status report for 2008, Los Alamos National Laboratory  

SciTech Connect

The status of groundwater level monitoring at Los Alamos National Laboratory in 2008 is provided in this report. This report summarizes groundwater level data for 179 monitoring wells, including 45 regional aquifer wells, 28 intermediate wells, 8 regional/intermediate wells, 106 alluvial wells, and 12 water supply wells. Pressure transducers were installed in 166 monitoring wells for continuous monitoring of groundwater levels. Time-series hydrographs of groundwater level data are presented along with pertinent construction and location information for each well. The report also summarizes the groundwater temperatures recorded in intermediate and regional aquifer monitoring wells.

Koch, Richard J.; Schmeer, Sarah

2009-03-01

406

The Los Alamos National Laboratory Nuclear Vision Project  

SciTech Connect

Los Alamos National Laboratory has initiated a project to examine possible futures associated with the global nuclear enterprise over the course of the next 50 years. All major components are included in this study--weapons, nonproliferation, nuclear power, nuclear materials, and institutional and public factors. To examine key issues, the project has been organized around three main activity areas--workshops, research and analyses, and development of linkages with other synergistic world efforts. This paper describes the effort--its current and planned activities--as well as provides discussion of project perspectives on nuclear weapons, nonproliferation, nuclear energy, and nuclear materials focus areas.

Arthur, E.D.; Wagner, R.L. Jr.

1996-09-01

407

Auditing nuclear weapons quality programs at Los Alamos  

SciTech Connect

Some of the problems involved in introducing quality assurance on a broad scale in a national laboratory are discussed. A philosophy of how QA can be utilized beneficially in research and development activities is described briefly, and our experiences at Los Alamos in applying QA to nuclear weapons activities are outlines. The important role of audits is emphasized; audits are used not merely to determine the effectiveness of QA programs but also to explain and demonstrate the usefulness of QA to a generally sceptical body of engineers and scientists. Finally, some ways of easing the application of QA in the future are proposed. 1 ref.

Davis, A.H.

1988-01-01

408

Groundwater Level Status Report for 2005 Los Alamos National Laboratory  

SciTech Connect

The status of groundwater level monitoring at Los Alamos National Laboratory (LANL) in 2005 is provided in this report. The Groundwater Level Monitoring Project was instituted in 2005 to provide a framework for the collection and processing of quality controlled groundwater level data. This report summarizes groundwater level data for 137 monitoring wells, including 41 regional aquifer wells, 22 intermediate wells, and 74 alluvial wells. Pressure transducers were installed in 118 monitoring wells for continuous monitoring of groundwater levels. Time-series hydrographs of groundwater level data are presented along with pertinent construction and location information for each well.

S.P. Allen; R.J. Koch

2006-05-15

409

Benchmark assemblies of the Los Alamos Critical Assemblies Facility  

SciTech Connect

Several critical assemblies of precisely known materials composition and easily calculated and reproducible geometries have been constructed at the Los Alamos National Laboratory. Some of these machines, notably Jezebel, Flattop, Big Ten, and Godiva, have been used as benchmark assemblies for the comparison of the results of experimental measurements and computation of certain nuclear reaction parameters. These experiments are used to validate both the input nuclear data and the computational methods. The machines and the applications of these machines for integral nuclear data checks are described.

Dowdy, E.J.

1985-01-01

410

Text and graphics at Los Alamos: a system viewpoint  

SciTech Connect

At Los Alamos National Laboratory, a computerized document preparation system is being developed to produce publication-quality documents integrating text and graphics. Mixing text and graphics involves a combination of two different technologies; thus the project has presented numerous and interesting challenges. The requirements, issues, solutions, and continuing concerns of the system development are described. The particular challenges encountered in fitting the document system into the Laboratory's diverse computing network are explained. The paper itself is an example of the type of document the system can produce. 3 figs.

Vigil, M.; Bouchier, S.C.

1986-01-01

411

Statistical efforts for Los Alamos Crew Member Lethality Program  

SciTech Connect

To date the Crew Member Lethality Program at Los Alamos has involved 42 behind armor effects tests conducted at Kirkland Air Force Base, New Mexico. Data management for these tests has involved a series of activities ranging from experimental design to data file organization, with an objective of recording relevant test parameters and data and of providing the capability to perform theoretically sound statistical analyses in an efficient manner. This paper describes the approach that has been taken and anticipated future directions. 8 refs., 3 figs., 2 tabs.

Bement, T.R.; Picard, R.R.; Peck, C.E.; Moore, L.M.; Hemphill, G.M.

1988-01-01

412

Upgrade of the Los Alamos Plutonium Facility control system  

SciTech Connect

After 20 yrs service, the Los Alamos Plutonium Facility is undergoing an upgrade to its aging Facility Control System. The new system design includes a network of redundantly-paired programmable logic controllers that will interface with about 2200 field data points. The data communications network that has been designed includes a redundant, self-healing fiber optic data highway as well as a fiber optic ethernet. Commercially available human-machine interface software running on a UNIX-based system displays facility subsystem status operator X-terminals. Project design features, methods, costs, and schedule are discussed.

Pope, N.G.; Turner, W.J.; Brown, R.E.; Bibeau, R.A.; Davis, R.R.; Hogan, K.

1996-05-01

413

Recent results from the Los Alamos free-electron laser  

SciTech Connect

In this paper we review the most recent experimental results of the Los Alamos free-electron laser program. Three major effects will be described: lasing at improved efficiency over that previously attained, electron beam improvement, and energy recovery. An extraction efficiency of 2% was achieved with a wiggler having a 12% wavelength taper. The beam has been improved so that limits to its quality are now caused, not by injector performance, but by wake fields related to the high peak currents achieved. Limits to optical power are set by mirror damage. Experiments are described that demonstrate the successful operation of an energy recovery system. 17 refs., 10 figs., 3 tabs.

Feldman, D.W.; Warren, R.W.; Carlsten, B.E.; Stein, W.E.; Watson, J.M.; Brau, C.A.; Spalek, G.; Young, L.M.; Lumpkin, A.H.; Bender, S.C.

1988-01-01

414

Mac configuration management at the Los Alamos National Laboratory  

SciTech Connect

The Los Alamos National Laboratory (LANL) had a need for central configuration management of non-Windows computers. LANL has three to five thousand Macs and an equal number of Linux based systems. The primary goal was to be able to inventory all non-windows systems and patch Mc OS X systems. LANL examined a number of commercial and open source solutions and ultimately selected Puppet. This paper will discuss why we chose Puppet, how we implemented it, and some lessons we learned along the way.

Marcus, Allan B [Los Alamos National Laboratory

2010-01-01

415

The Los Alamos VXI-based modular RF control system  

SciTech Connect

This paper describes the design and implementation of the Los Alamos modular RF control system, which provides high-performance feedback and/or feedforward control of RF accelerator cavities. This is a flexible, modular control system which has been realized in the industry-standard VXI cardmodular format. A wide spectrum of system functionality can be accommodated simply by incorporating only those modules and features required for a particular application. The fundamental principles of the design approach are discussed. Details of the VXI implementation are given, including the system architecture and interfaces, performance capabilities, and available features.

Jachim, S.P.; Ziomek, C.; Natter, E.F.; Regan, A.H.; Hill, J.; Eaton, L.; Gutscher, W.D.; Curtin, M.; Denney, P.; Hansberry, E.; Brooks, T.

1993-01-01

416

The Los Alamos VXI-based modular RF control system  

SciTech Connect

This paper describes the design and implementation of the Los Alamos modular RF control system, which provides high-performance feedback and/or feedforward control of RF accelerator cavities. This is a flexible, modular control system which has been realized in the industry-standard VXI cardmodular format. A wide spectrum of system functionality can be accommodated simply by incorporating only those modules and features required for a particular application. The fundamental principles of the design approach are discussed. Details of the VXI implementation are given, including the system architecture and interfaces, performance capabilities, and available features.

Jachim, S.P.; Ziomek, C.; Natter, E.F.; Regan, A.H.; Hill, J.; Eaton, L.; Gutscher, W.D.; Curtin, M.; Denney, P.; Hansberry, E.; Brooks, T.

1993-06-01

417

Laser protective eyewear program at the Los Alamos Scientific Laboratory  

SciTech Connect

The proliferation of lasers at Los Alamos focused considerable attention on providing adequate eye protection for experimenters involved in the use of a wide variety of nonionizing radiation. Experiments with fast-pulsed lasers (Nd:YAG, HF, and CO/sub 2/) were performed to gain biological threshold data on ocular damage. In parallel, eye protection devices were evaluated, which resulted in the development of lightweight, comfortable spectacles of colored glass filters that can be ground to prescription specifications. Goggle styles are employed in specific applications.

Winburn, D.C.

1980-01-01

418

Development of the Los Alamos solid-state optical refrigerator  

NASA Astrophysics Data System (ADS)

Laser-induced cooling of a solid by net anti-Stokes fluorescence, first experimentally demonstrated in 1995, can be the basis of a new type of cryocooler, an optical refrigerator. This article describes the physics and design issues of a practical optical refrigerator for operation at 77 K. In particular, the Los Alamos Solid-State Optical Refrigerator (LASSOR) which we are developing would have an operating efficiency comparable to commercial small cryocoolers, be completely vibration-free and operate for years without maintenance.

Edwards, Bradley C.; Buchwald, Melvin I.; Epstein, Richard I.

1998-05-01

419

End magnets for the NBS-Los Alamos racetrack microtron  

SciTech Connect

Two end magnets have been designed and constructed for the 185 MeV NBS-Los Alamos racetrack microtron. The field has been measured in the first magnet and is uniform over a 0.62 m/sup 2/ area to within + or - 2 X 10/sup -4/ at 1 T. The magnet meets all performance specifications. Field measurements are underway on the second magnet. In this paper, design and construction details which play an important role in magnetic performance are described, and the measured fields are compared with calculations.

Debenham, P.H.; Lindstrom, E.R.; Mohr, D.L.

1985-10-01

420

Decommissioning of surplus facilities at Los Alamos National Laboratory  

SciTech Connect

Decommissioning Buildings 3 and 4 South at Technical Area 21, Los Alamos National Laboratory, involves the decontamination, dismantlement, and demolition of two enriched-uranium processing buildings containing process equipment and ductwork holdup. The Laboratory has adopted two successful management strategies to implement this project: Rather than characterize an entire site, upfront, investigators use the ``observational approach,`` in which they collect only enough data to begin decommissioning activities and then determine appropriate procedures for further characterization as the work progresses. Project leaders augment work packages with task hazard analyses to fully define specific tasks and inform workers of hazards; all daily work activities are governed by specific work procedures and hazard analyses.

Stout, D.S.

1995-03-01

421

Comparación entre los sitios de LLAMA y APEX  

NASA Astrophysics Data System (ADS)

A comparison among the meteorological condition prevailing at the location of APEX (Atacama Pathfinder Experiment) telescope and the site selected to deploy LLAMA (Long Latin American Millimeter Array) is carried out. The later is dubbed Alto Chorrillo, and is located 4800 m above sea level and around 16 km eastward from the town of San Antonio de los Cobres (province of Salta). This work is part of a long term monitoring campaign aim at selecting sites for millimeter and submillimeter radioastronomy that is being carried out by the Instituto Argentino de Radioastronomía (IAR) since 2002. FULL TEXT IN SPANISH

Bareilles, F. A.; Morras, R.; Hauscarriaga, F. P.; Guarrera, L.; Arnal, E. M.; Lepine, J. R. D.

422

Alterations in nitrogen biogeochemistry in Los Angeles, California (Invited)  

NASA Astrophysics Data System (ADS)

The biogeochemistry and ecology of the Los Angeles region have been heavily altered by humans. Irrigation and fertilization have changed the landscape dramatically, with concomitant changes in the regional N budget. Anthropogenic N additions to the region have resulted in increased losses of N. We studied two aspects of N cycling in Southern California: soil-atmosphere fluxes of nitrous oxide (N2O), a powerful greenhouse gas, and dissolved N losses to the coastal ocean in streams and urban runoff. Nitrous oxide fluxes from irrigated and fertilized lawns in the Los Angeles region are similar to results from agricultural fields in Southern California and elsewhere, indicating that urban landscapes may be a significant contributor to regional greenhouse gas budgets. Content of N-15 and O-18 in N2O from agricultural and urban land cover is highly variable, and isotope signatures are not useful indicators of urban versus agricultural N2O sources. We found that the isotopic signature of N2O was highly variable from soils, but very useful for distinguishing among sources of dissolved nitrate. Irrigation in urban areas has also increased the flux of fresh water to the coastal ocean, with concurrent increases in nutrient fluxes to coastal ecosystems. Wastewater and soil N are the major sources of N to Aliso Creek, an urban/suburban stream in the Los Angeles area, with atmospheric N only a small source during infrequent rain events. Inorganic fertilizers do not appear to be a large source of N to the stream. Concentrations of nitrate in this stream are much higher (~ 10 micromoles per liter) than streams in watersheds that are less impacted by humans. N-15 in nitrate in the stream increases along a longitudinal gradient downstream, indicating that denitrification along the stream channel and in riparian areas may be helping to reduce the total N loading to the coastal ocean, although this may also be associated with increases in N2O emissions. Irrigation with recycled wastewater helps conserve scarce water resources, but may also be adding to total gaseous and dissolved losses of N in the Los Angeles area.

Townsend-Small, A.; Pataki, D. E.

2009-12-01

423

Precision electroweak physics with neutrinos at Los Alamos  

SciTech Connect

We review the status of current efforts at Los Alamos to measure the mass of /bar /nu///sub e/ with tritium beta decay and to search for oscillation of /bar /nu///sub ..mu../ to /bar /nu///sub e/. A new proposal to carry out a precision measurement of the electroweak mixing angle, theta/sub W/, using neutrino-electron scattering measured in a 7000-ton water /hacek C/erenkov detector, the Large /hacek C/erenkov Detector (LCD), is described. 17 refs., 6 figs., 1 tab.

Sanders, G.H.

1989-01-01

424

Gamma-ray isotopic analysis development at Los Alamos  

SciTech Connect

This report describes the development history and characteristics of software developed in the Safeguards Science and Technology group at Los Alamos for gamma-ray isotopic analysis. This software analyzes the gamma-ray spectrum from measurements performed on actinide samples (principally plutonium and uranium) of arbitrary size, geometry, and physical and chemical composition. The results are obtained without calibration using only fundamental tabulated nuclear constants. Characteristics of the current software versions are discussed in some detail and many examples of implemented measurement systems are shown.

Thomas E. Sampson

1999-11-01

425

The Los Alamos National Laboratory Neutron Source Reclamation Program  

SciTech Connect

Over the past fifty years, the Los Alamos National Laboratory has developed an extensive capability to handle significant quantities of nuclear materials as part of its role in support of DOE Defense Program activities. The goals and objectives of these activities are met through a base program in nuclear materials technology research, development, and demonstration as well as through additional programs (such as the Neutron Source Reclamation Program) aimed at specific, often near-term goals. This base program encompasses (1) plutonium process technology research, development and demonstration activities, (2) technology transfer and offsite technical support, (3) nuclear materials recycle and recovery, and (4) nuclear facility operations and maintenance.

Behrens, R.G.; Jones, S.W.

1994-05-01

426

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.

427

Inadvertent ingestion of marijuana - Los Angeles, California, 2009.  

PubMed

On April 8, 2009, the Los Angeles Police Department (LAPD) notified officials from the Los Angeles County Department of Public Health (DPH) in California about a group of preschool teachers with nausea, dizziness, headache, and numbness and tingling of fingertips after consumption of brownies purchased 3 days before from a sidewalk vendor. To characterize the neurologic symptoms and determine whether these symptoms were associated with ingestion of the brownies, the police and health departments launched a collaborative investigation. This report summarizes the results of that investigation, which detected cannabinoids in a recovered sample of the brownies. Two patients sought medical attention, and one patient's urine and serum tested positive for 11-nor-9-carboxy-delta 9-tetrahydrocannabinol (THC-COOH), a marijuana metabolite. The findings in this report demonstrate the utility of a collaborative investigation by public health and law enforcement.The findings also underscore the need to consider marijuana as a potential contaminant during foodborne illness investigations and the importance of identifying drug metabolites by testing of clinical specimens soon after symptom onset. PMID:19730407

2009-09-01

428

Summary of safeguards interactions between Los Alamos and Chinese scientists  

SciTech Connect

Los Alamos has been collaborating since 1984 with scientists from the Chinese Institute of Atomic Energy (CIAE) to develop nuclear measurement instrumentation and safeguards systems technologies that will help China support implementation of the nonproliferation treaty (NPT). To date, four Chinese scientists have visited Los Alamos, for periods of six months to two years, where they have studied nondestructive assay instrumentation and learned about safeguards systems and inspection techniques that are used by International Atomic Energy Agency (IAEA) inspectors. Part of this collaboration involves invitations from the CIAE to US personnel to visit China and interact with a larger number of Institute staff and to provide a series of presentations on safeguards to a wider audience. Typically, CIAE scientists, Beijing Institute of Nuclear Engineering (BINE) staff, and officials from the Government Safeguards Office attend the lectures. The BINE has an important role in developing the civilian nuclear power fuel cycle. BINE is designing a reprocessing plant for spent nuclear fuel from Chinese nuclear Power reactors. China signed the nonproliferation treaty in 1992 and is significantly expanding its safeguards expertise and activities. This paper describes the following: DOE support for US and Chinese interactions on safeguards; Chinese safeguards; impacts of US-China safeguards interactions; and possible future safeguards interactions.

Eccleston, G.W.

1994-04-20

429

Los Alamos Opacities: Transition from LEDCOP to ATOMIC  

SciTech Connect

This paper discusses the development of the ATOMIC code, a new low to mid Z opacity code, which will replace the current Los Alamos low Z opacity code LEDCOP. The ATOMIC code is based on the FINE code, long used by the Los Alamos group for spectral comparisons in local thermodynamic equilibrium (LTE) and for non-LTE calculations, utilizing the extensive databases from the atomic physics suite of codes based on the work of R. D. Cowan. Many of the plasma physics packages in LEDCOP, such as line broadening and free-free absorption, are being transferred to the new ATOMIC code. A new equation of state (EOS) model is being developed to allow higher density calculations than were possible with either the FINE or LEDCOP codes. Extensive modernization for both ATOMIC and the atomic physics code suites, including conversion to Fortran 90 and parallelization, are under way to speed up the calculations and to allow the use of expanded databases for both the LTE opacity tables and the non-LTE calculations. Future plans will be outlined, including considerations for new generation opacity tables.

Magee, N.H.; Abdallah, J.; Colgan, J.; Hakel, P.; Kilcrease, D.P.; Mazevet, S.; Sherrill, M. [Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Fontes, C.J.; Zhang, H.L. [Applied Theory Division, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2004-10-20

430

Performance programming with the Los Alamos macro accelerator  

SciTech Connect

The CCC macro facility, as extended by Version 2.0 of Softool's Change and Configuration Control Environment, offers many new and powerful features. Among these are a vastly extended suite of commands, error trapping, and structured constructs. In concert with previously existing Version 1.x features (notably the very powerful symbol substitution and parameter passage facilities), these features combine to transform the macro facility from a simple command language into an extremely flexible programming language which is suitable for developing very large and complex applications. This paper presents the results of a performance analysis of the CCC macro facility conducted at the Los Alamos National Laboratory Weapons Neutron Research Facility. The goal of this work was to identify and evaluate major factors that can contribute to the degradation of performance of the CCC macro facility, and to develop strategies for countering their effects. In particular, we report on the Los Alamos Macro Accelerator, which can produce dramatic increases in execution speed for many applications.

Cort, G.

1985-01-01

431

Industrial application for the Los Alamos Materials Modeling Platform  

SciTech Connect

This is the final report of a one-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). Casting and solidification of molten metals and metal alloys is a critical step in the production of high-quality metal stock and in the fabrication of finished parts. Control of the casting process can be the determining factor in both the quality and cost of the final metal product. Major problems with the quality of cast stock or finished parts can arise because of the difficulty of preventing variations in the alloy content, the generation of porosity or poor surface finish, and the loss of microstructure controlled strength and toughness resulting from the poor understanding and design of the mold filling and solidification processes. In this project, we sought to develop a new set of applications focused on adding the ability to accurately model solidification and grain growth to casting simulations. We implemented these applications within the Los Alamos Materials Modeling Platform, LAMMP, a graphical-based materials, and materials modeling environment being created at the Computational Testbed for Industry.

Lesar, R.; Charbon, C.; Kothe, D.; Wu, D.; Reddy, A.

1996-09-01

432

Exploding metallic foil fuse modeling at Los Alamos  

SciTech Connect

A ''first-principles'' computational model of exploding metallic foil behavior has been developed at Los Alamos. The model couples zero-dimensional magnetohydrodynamics with ohmic heating and electrical circuit equations and uses the Los Alamos SESAME atomic data base computer library to determine the foil material's temperature- and density-dependent pressure, specific energy, and electrical conductivity. The model encompasses many previously successful empirical models and offers plausible physical explanations of phenomena not treated by the empirical models. In addition to addressing the electrical circuit performance of an exploding foil, the model provides information on the temporal evolution of the foil material's density, temperature, pressure, electrical conductivity, and expansion and translational velocities. In this paper, we report the physical insight gained by computational studies of two opening switch concepts being developed for application in an FCG-driven 1-MJ-class imploding plasma z-pinch experiment. The first concept considered is a ''conventional'' electrically exploded fuse, which has been demonstrated to operate at 16 MA driven by the 15-MJ-class FCG to be used in the 1 MJ implosion experiment. The second concept considered is a Type 2 explosively formed fuse (EFF), which has been demonstrated to operate at the 8 MA level by a 1-MJ-class FCG.

Lindemuth, I.R.; Reinovsky, R.E.; Goforth, J.H.

1989-01-01

433

Solar pond research at the Los Alamos National Laboratory  

SciTech Connect

A description of solar pond research at Los Alamos National Laboratory is presented. The main issues in the theory of solar ponds are discussed. Among these are the interfacial-boundary-layer model, models for interface motion and pond performance, heat extraction, and ground heat loss. The core of the research effort at Los Alamos was the development of a one-dimensional computer program to accurately predict dynamic performance of a solar pond. The computer model and the experiments that were designed and performed to validate it are described. The experiments include two laboratory tanks wherein temperature, salinity, and flow visualization data were obtained and a 232 m/sup 2/ outdoor solar pond. Results from preliminary validation show good agreement between the pond's predicted dynamic behavior and that which actually occurred in the experiments. More validation using data from full-sized solar ponds is needed. A new correlation for the ratio of interfacial salt-flux to heat-flux is proposed which agrees well with our data. Recommendations for future research are given.

Jones, G.F.; Meyer, K.A.; Hedstrom, J.C.; Grimmer, D.P.

1984-01-01

434

Traumatic child death and documented maltreatment history, Los Angeles.  

PubMed Central

OBJECTIVES. Child abuse is a presumed but largely untested risk factor for child homicide. This research investigated the social and child protective service history of child homicide victims. METHODS. A pairwise matched case-control design was used to assess documented child maltreatment as a risk factor for homicide vs unintentional injury death. Homicide victims aged 0 to 14 years were identified through Los Angeles Police Department case summaries. Control subjects (children who died of an unintentional injury) were matched to case subjects (children who died from homicide) by age, sex, race/ethnicity, and date of death. Case and control subjects were linked with county service records to determine any known history of maltreatment. RESULTS. A total of 220 children were homicide victims during 1978 through 1987 in the city of Los Angeles. Only one in six children who died (of homicide or unintentional injury) or his/her family was known to county social or child protective services prior to the death. Recorded history of child protective services was associated with homicide victimization (adjusted odds ratio = 3.40, 95% confidence interval = 1.25, 9.27). CONCLUSIONS. Current service systems need assistance in identifying and protecting children at high risk of homicide.

Sorenson, S B; Peterson, J G

1994-01-01

435

An organizational survey of the Los Alamos Site  

SciTech Connect

An Organizational Survey (OS) was administered at the Los Alamos Site that queried employees on the subjects of organizational culture, various aspects of communications, employee commitment, work group cohesion, coordination of work, environmental, safety, and health concern, hazardous nature of work, safety and overall job satisfaction. The purpose of the OS is to measure in a quantitative and objective way the notion of culture;'' that is, the values, attitudes, and beliefs of the individuals working within the organization. In addition, through the OS, a broad sample of individuals can be reached that would probably not be interviewed or observed during the course of a typical assessment. The OS also provides a descriptive profile of the organization at one point in time that can then be compared to a profile taken at a different point in time to assess changes in the culture of the organization. While comparisons among groups are made, it is not the purpose of this report to make evaluative statements of which profile may be positive or negative. However, using the data presented in this report in conjunction with other evaluative activities, may provide useful insight into the organization. The OS administration at the Los Alamos Site was the ninth to occur at a Department of Energy (DOE) facility. All data from the OS is presented in group summaries, by organization, department or directorate within organization, supervisory level both overall and within organization, and staff classification within organization. Statistically significant differences between groups are identified and discussed. 9 refs., 94 figs., 11 tabs.

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

1991-11-01

436

An organizational survey of the Los Alamos Site  

SciTech Connect

An Organizational Survey (OS) was administered at the Los Alamos Site that queried employees on the subjects of organizational culture, various aspects of communications, employee commitment, work group cohesion, coordination of work, environmental, safety, and health concern, hazardous nature of work, safety and overall job satisfaction. The purpose of the OS is to measure in a quantitative and objective way the notion of ``culture;`` that is, the values, attitudes, and beliefs of the individuals working within the organization. In addition, through the OS, a broad sample of individuals can be reached that would probably not be interviewed or observed during the course of a typical assessment. The OS also provides a descriptive profile of the organization at one point in time that can then be compared to a profile taken at a different point in time to assess changes in the culture of the organization. While comparisons among groups are made, it is not the purpose of this report to make evaluative statements of which profile may be positive or negative. However, using the data presented in this report in conjunction with other evaluative activities, may provide useful insight into the organization. The OS administration at the Los Alamos Site was the ninth to occur at a Department of Energy (DOE) facility. All data from the OS is presented in group summaries, by organization, department or directorate within organization, supervisory level both overall and within organization, and staff classification within organization. Statistically significant differences between groups are identified and discussed. 9 refs., 94 figs., 11 tabs.

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

1991-11-01

437

Cleanup at Los Alamos National Laboratory - the challenges - 9493  

SciTech Connect

This paper provides an overview of environmental cleanup at the Los Alamos National Laboratory (LANL) and some of the unique aspects and challenges. Cleanup of the 65-year old Department of Energy Laboratory is being conducted under a RCRA Consent Order with the State of New Mexico. This agreement is one of the most recent cleanup agreements signed in the DOE complex and was based on lessons learned at other DOE sites. A number of attributes create unique challenges for LANL cleanup -- the proximity to the community and pueblos, the site's topography and geology, and the nature of LANL's on-going missions. This overview paper will set the stage for other papers in this session, including papers that present: Plans to retrieve buried waste at Material Disposal Area B, across the street from oen of Los Alamos' commercial districts and the local newspaper; Progress to date and joint plans with WIPP for disposal of the remaining inventory of legacy transuranic waste; Reviews of both groundwater and surface water contamination and the factors complicating both characterization and remediation; Optimizing the disposal of low-level radioactive waste from ongoing LANL missions; A stakeholder environmental data transparency project (RACER), with full public access to all available information on contamination at LANL, and A description of the approach to waste processing cost recovery from the programs that generate hazardous and radioactive waste at LANL.

Stiger, Susan G [Los Alamos National Laboratory; Hargis, Kenneth M [Los Alamos National Laboratory; Graham, Michael J [Los Alamos National Laboratory; Rael, George J [NNSL/LASO

2008-01-01

438

Fuels Inventories in the Los Alamos National Laboratory Region: 1997  

SciTech Connect

Fifty-four sites were surveyed for fuel levels, vegetational structures, and topographic characteristics. Most of the surveyed sites were on Los Alamos National Laboratory property, however, some surveys were also conducted on U.S. Forest Service property. The overall vegetation of these sites ranged from pinon-juniper woodlands to ponderosa pine forests to mixed conifer forests, and the topographic positions included canyons, mesas, and mountains. The results of these surveys indicate that the understory fuels are the greatest in mixed conifer forests and that overstory fuels are greatest in both mixed conifer forests and ponderosa pine forests on mesas. The geographic distribution of these fuels would suggest a most credible wildfire scenario for the Los Alamos region. Three major fires have occurred since 1954 and these fires behaved in a manner that is consistent with this scenario. The most credible wildfire scenario was also supported by the results of BEHAVE modeling that used the fuels inventory data as inputs. Output from the BEHAVE model suggested that catastrophic wildfires would continue to occur during any season with sufficiently dry, windy weather.

Balice, R.G.; Oswald, B.P.; Martin, C.

1999-03-01

439

Air pollution and daily hospital admissions in metropolitan Los Angeles.  

PubMed Central

We used daily time-series analysis to evaluate associations between ambient carbon monoxide, nitrogen dioxide, particulate matter [less than and equal to] 10 microm in aerodynamic diameter (PM(10)), or ozone concentrations, and hospital admissions for cardiopulmonary illnesses in metropolitan Los Angeles during 1992-1995. We performed Poisson regressions for the entire patient population and for subgroups defined by season, region, or personal characteristics, allowing for effects of temporal variation, weather, and autocorrelation. CO showed the most consistently significant (p<0.05) relationships to cardiovascular admissions. A wintertime 25th-75th percentile increase in CO (1.1-2.2 ppm) predicted an increase of 4% in cardiovascular admissions. NO(2), and, to a lesser extent, PM(10) tracked CO and showed similar associations with cardiovascular disease, but O(3) was negatively or nonsignificantly associated. No significant demographic differences were found, although increased cardiovascular effects were suggested in diabetics, in whites and blacks (relative to Hispanics and Asians), and in persons older than 65 years of age. Pulmonary disease admissions associated more with NO(2) and PM(10) than with CO. Pulmonary effects were generally smaller than cardiovascular effects and were more sensitive to the choice of model. We conclude that in Los Angeles, atmospheric stagnation with high primary (CO/NO(2)/PM(10)) pollution, most common in autumn/winter, increases the risk of hospitalization for cardiopulmonary illness. Summer photochemical pollution (high O(3)) apparently presents less risk. Images Figure 1 Figure 2

Linn, W S; Szlachcic, Y; Gong, H; Kinney, P L; Berhane, K T

2000-01-01

440

Seismic vulnerability study Los Alamos Meson Physics Facility (LAMPF)  

SciTech Connect

The Los Alamos Meson Physics Facility (LAMPF), located at TA-53 of Los Alamos National Laboratory (LANL), features an 800 MeV proton accelerator used for nuclear physics and materials science research. As part of the implementation of DOE Order 5480.25 and in preparation for DOE Order 5480.28, a seismic vulnerability study of the structures, systems, and components (SSCs) supporting the beam line from the accelerator building through to the ends of die various beam stops at LAMPF has been performed. The study was accomplished using the SQUG GIP methodology to assess the capability of the various SSCs to resist an evaluation basis earthquake. The evaluation basis earthquake was selected from site specific seismic hazard studies. The goals for the study were as follows: (1) identify SSCs which are vulnerable to seismic loads; and (2) ensure that those SSCs screened during die evaluation met the performance goals required for DOE Order 5480.28. The first goal was obtained by applying the SQUG GIP methodology to those SSCS represented in the experience data base. For those SSCs not represented in the data base, information was gathered and a significant amount of engineering judgment applied to determine whether to screen the SSC or to classify it as an outlier. To assure the performance goals required by DOE Order 5480.28 are met, modifications to the SQUG GIP methodology proposed by Salmon and Kennedy were used. The results of this study ire presented in this paper.

Salmon, M. [EQE International, Inc., Irvine, CA (United States); Goen, L.K. [Los Alamos National Lab., NM (United States)

1995-12-01

441

System requirements for the Los Alamos foil-implosion project  

SciTech Connect

The goal of the Los Alamos imploding foil project is the development of an intense source of soft x rays and hot plasma produced from the thermalization of 1 to 10 MJ of plasma kinetic energy. The source will be used for material studies and fusion experiments. Specifically, thin, current-carrying cylindrical metallic plasmas are imploded via their self-magnetic forces. Features of this project are the use of high-explosive-driven flux-compression generators as the prime power source to achieve very high energies and fast opening switches to shorten the electrical pulses. To reach a load kinetic energy of 10 MJ, it is expected that the foil-plasma must carry about 50 MA of current and must implode in less than 1/2 ..mu..sec. This imposes the requirements that switch opening times must be less than 1/2 ..mu..sec and the transmission line must withstand voltages of about 1 MV. The system being pursued at Los Alamos is described, and model calculations are presented.

Brownell, J.; Bowers, R.; Greene, A.; Lindemuth, I.; Nickel, G.; Oliphant, T.; Weiss, D.

1983-01-01

442

Los Alamos energetic particle sensor systems at geostationary orbit  

SciTech Connect

The Los Alamos National Laboratory has provided energetic particle sensors for a variety of spacecraft at the geostationary orbit (36,000 km altitude). The sensor system called the Charged Particle Analyzer (CPA) consists of four separate subsystems. The LoE and HiE subsystems measure electrons in the energy ranges 30 to 300 keV and 200 to 2000 keV, respectively. The LoP and HiP subsystems measure ions in the ranges 100 to 600 keV and 0.40 to 150 MeV, respectively. A separate sensor system called the spectrometer for energetic electrons (SEE) measures very high-energy electrons (2 to 15 MeV) using advanced scintillator design. In this paper we describe the relationship of operational anomalies and spacecraft upsets to the directly measured energetic particle environments at 6.6 R/sub E/. We also compare and contrast the CPA and SEE instrument design characteristics with the next generation of Los Alamos instruments to be flown at geostationary altitudes.

Baker, D.N.; Aiello, W.; Asbridge, J.R.; Belian, R.D.; Higbie, P.R.; Klebesadel, R.W.; Laros, J.G.; Tech, E.R.

1985-01-01

443

Electronic full-image reports at Los Alamos National Laboratory  

SciTech Connect

Los Alamos National Laboratory is a Department of Energy laboratory operated by the University of California. There are over 10,000 laboratory employees and contractors, many engaged in a variety of scientific and technical research. The laboratory covers forty-three square miles in northern New Mexico, one hundred miles from the nearest city which might reasonably be expected to meet the needs of the researchers. Because of the remoteness of the institution, the Research Library is a vital source for scientific and technical information. Due to the size of the institution, access to the physical library is difficult. These barriers, along with advances in technology, have led the Research Library to provide desktop access to all formal, unlimited Los Alamos reports. Older reports have been scanned and newer ones are received in electronic format. Currently over 10,000 reports are available in portable document format (PDF) via the World Wide Web (http://lib-www.lanl.gov). Researchers can search the library Web catalog (on a Z39.50 server), find a report, and click on a link to automatically bring up the report. This has been an extremely successful project as shown by the high usage, over 3,000 files retrieved per month in 1997 compared with around 100 for the hardcopy. This paper will discuss the reasons for, and the mechanics of, digitizing the reports, the results that have been observed, and plans for the future.

Mosier, M.L.

1998-03-02

444

The Los Alamos universe: Using multimedia to promote laboratory capabilities  

SciTech Connect

This project consists of a multimedia presentation that explains the technological capabilities of Los Alamos National Laboratory. It takes the form of a human-computer interface built around the metaphor of the universe. The project is intended promote Laboratory capabilities to a wide audience. Multimedia is simply a means of communicating information through a diverse set of tools--be they text, sound, animation, video, etc. Likewise, Los Alamos National Laboratory is a collection of diverse technologies, projects, and people. Given the ample material available at the Laboratory, there are tangible benefits to be gained by communicating across media. This paper consists of three parts. The first section provides some basic information about the Laboratory, its mission, and its needs. The second section introduces this multimedia presentation and the metaphor it is based on along with some basic concepts of color and user interaction used in the building of this project. The final section covers construction of the project, pitfalls, and future improvements.

Kindel, J.

2000-03-01

445

El valor de uso recreativo de los espacios naturales protegidos. Una aplicación de los métodos de valoración contingente y del coste del viaje  

Microsoft Academic Search

En este articulo se presenta una aplicación de dos de las metodologías desarrolladas para medir los beneficios que se derivan del uso recreativo de los bienes ambientales en ausencia de mercado, el método del coste del viaje (MCV) y el de valoración contingente (MVC). La zona objeto de estudio ha sido el Parque Nacional de “Aigüestortes y Estany de Sant

M. FARRÉ PERDIGUER

2003-01-01

446

XUV free-electron laser development at Los Alamos  

SciTech Connect

Free-electron lasers (FELs) for the vacuum-ultraviolet and soft x-ray spectral regions (together termed the XUV) are being developed at Los Alamos for integration into a proposed national UV/XUV FEL user facility for scientific experimentation. This facility would consist of a sequence of up to 15 FEL oscillators and amplifiers, driven by a single, rf-linear accelerator, that will generate broadly tunable, picosecond-pulse, coherent radiation over the range from 1 to 400 nm. Below 300 nm, the peak- and average-power output of these FEL devices should surpass the capabilities of any existing, continuously tunable photon sources by many orders of magnitude. We list the design parameters and predicted output of these FELs and make comparison with synchrotron radiation sources. Brief mention is given to our recent progress in developing the three primary components (electron beam, magnetic undulator, and resonator mirrors). 24 refs., 2 figs., 3 tabs.

Newnam, B.E.

1988-01-01

447

Pajarito Plateau archaeological survey and excavations. [Los Alamos Reservation  

SciTech Connect

Los Alamos Scientific Laboratory lands were surveyed to locate pre-Columbian Indian ruins. The survey results will permit future construction to be planned so that most of the ancient sites in the area can be preserved. Indian occupation of the area occurred principally from late Pueblo III times (late 13th century) until early Pueblo V (about the middle of the 16th century). There are evidences of sporadic Indian use of the area for some 10,000 years. One Folsom point has been found, as well as many other archaic varieties of projectile points. Continued use of the region well into the historic period is indicated by pictographic art that portrays horses. In addition to an account of the survey, the report contains summaries of excavations made on Laboratory lands between 1950 and 1975.

Steen, C.R.

1977-05-01

448

Smoking patterns among Los Alamos National Laboratory employees  

SciTech Connect

Smoking patterns among 5507 employees at Los Alamos National Laboratory were investigated for those who underwent physical examinations by occupational physicians from 1978 to 1983. More male than female employees smoked, although differences in smoking rates between the sexes were not as large as differences observed for national smoking rates. Employees over 40 were more likely to smoke than younger employees, males consumed more cigarettes than did females, and Anglo employees smoked more cigarettes than did Hispanic employees. Highly educated employees smoked less than did less-educated workers, and staff members exhibited the lowest rates of smoking. Smoking cessation programs for Laboratory employees should be directed toward those subpopulations with the highest rates of smoking. 31 refs., 8 figs., 1 tab.

Mahoney, M.C.; Wilkinson, G.S.

1987-06-01

449

Electrostatic sensitivity testing of explosives at Los Alamos  

SciTech Connect

An electrostatic sensitivity test for determining the handling hazards associated with both new and established explosives has been developed at Los Alamos and is now in routine use. The apparatus is a moving electrode device similar to that described by Kusler and Brown. The energy stored in selected capacitors of a capacitor bank is discharged through the sample of explosive. A unique system of confining the samples with lead foil allows one to measure various degrees of sample response to changes in the electrostatic stimulus. Varying the foil thickness provides information about both the ''sensitiveness'' and the ''explosiveness'' of the sample. The lead-foil-confinement technique eliminates the subjective description of the response of a secondary explosive to a marginal stimulus as is common in many explosives tests on secondaries. Variables studied included: particle size, sample weight, electrode material, series resistance, temperature, voltage, sample volume, and degree of confinement. 6 refs., 2 figs., 6 tabs.

Larson, T.E.; Dimas, P.; Hannaford, C.E.

1989-01-01

450

Misuse and intrusion detection at Los Alamos National Laboratory  

SciTech Connect

An effective method for detecting computer misuse is the automatic auditing and analysis of on-line user activity. This activity is reflected in system audit records, in system vulnerability postures, and in other evidence found through active system testing. Since 1989 we have implemented a misuse and intrusion detection system at Los Alamos. This is the Network Anomaly Detection and Intrusion Reporter, or NADIR. NADIR currently audits a Kerberos distributed authentication system, file activity on a mass, storage system, and four Cray supercomputers that run the UNICOS operating system. NADIR summarizes user activity and system configuration in statistical profiles. It compares these profiles to expert rules that define security policy and improper or suspicious behavior. It reports suspicious behavior to security auditors and provides tools to aid in follow-up investigations, As NADIR is constantly evolving, this paper reports its development to date.

Jackson, K.A.; Neuman, M.C.; Simmonds, D.D.; Stallings, C.A.; Thompson, J.L.; Christoph, G.G.

1995-04-01

451

Plans for an Ultra Cold Neutron source at Los Alamos  

SciTech Connect

Ultra Cold Neutrons (UCN) can be produced at spallation sources using a variety of techniques. To date the technique used has been to Bragg scatter and Doppler shift cold neutrons into UCN from a moving crystal. This is particularly applicable to short-pulse spallation sources. We are presently constructing a UCN source at LANSCE using this method. In addition, large gains in UCN density should be possible using cryogenic UCN sources. Research is under way at Gatchina to demonstrate technical feasibility of a frozen deuterium source. If successful, a source of this type could be implemented at future spallation source, such as the long pulse source being planned at Los Alamos, with a UCN density that may be two orders of magnitude higher than that presently available at reactors.

Seestrom, S.J.; Bowles, T.J.; Hill, R.; Greene, G.L.

1996-10-01

452

SurveyLA: Los Angeles Historic Resources Survey  

NSDL National Science Digital Library

If you mention "historic preservation" and "Los Angeles" in the same sentence, some people might raise their eyebrows. The City of Angeles has constantly reinvented itself during its relatively brief existence, and much of the city's urban fabric has been chewed up by bulldozers and ambitious developers over the past several decades. However, the J. Paul Getty Trust is providing financial backing for the very exciting and ambitious project known as "SurveyLA". The intent of SurveyLa is to complete a citywide survey that will identify and document historic resources representing significant themes in the city's history. Visitors to the site can learn about the survey's methods, read a FAQ section, and also locate historic properties. It's a very well-done website, and it's one that other historic preservation officials and persons with an interest in such matters may want to consult as they think about their own efforts in this area.

2008-01-01

453

XUV free-electron laser development at Los Alamos  

SciTech Connect

Free-electron lasers (FELs) for the vacuum-ultraviolet and soft x-ray spectral regions (together termed the XUV) are being designed at Los Alamos for integration into a future national UV/XUV FEL user facility for scientific experimentation. As proposed, this facility would consist of a sequence of up to 15 FEL oscillators and amplifiers, driven by a single, rf-linear accelerator, that will generate broadly tunable, picosecond-pulse, coherent radiation over the range from 1 to 400 nm. Below 300 nm, the peak- and average-power output of these FEL devices should surpass the capabilities of any existing, continuously tunable photon sources by many orders-of-magnitude. We describe the design parameters and predicted output of these FELs and make comparison with synchrotron radiation sources. Brief mention is given to our recent progress in developing the three primary components (electron beam, magnetic undulator, and resonator mirrors). 30 refs., 2 figs., 3 tabs.

Newnam, B.E.

1988-01-01

454

Status of the ICF program at Los Alamos National Laboratory  

SciTech Connect

In the Los Alamos program we are emphasizing the testing of targets uniquely designed for drive with the carbon dioxide (CO/sub 2/) laser. The two major facilities for this study are the eight-beam Helios system and the Antares laser system. Some recent results to be discussed demonstrate the dominant effect of self-generated magnetic fields in controlling energy transport by hot electrons. An understanding of this physics may permit the design of targets for CO/sub 2/ that are self-shielding in terms of hot electron preheat. Another consequence of the magnetic insulation is efficient energy conversion to ion motion. This occurs over a much largr surface than originally irradiated by the laser with in excess of 50 percent of the absorbed energy converted to ion motion in some experiments.

Rockwood, S.D.

1982-01-01

455

Progress report on the NBS/Los Alamos RTM  

NASA Astrophysics Data System (ADS)

The design and development of the National Bureau of Standards/Los Alamos Racetrack Microtron (RTM) are discussed. A description of the RTM and a listing of its subsystems and design parameters are provided. The components of the chopper-buncher system, the 5 MeV injection linac, and the rf power system are described. The construction, installation, and testing of the end magnets, which have a uniform field over a region of 1.2 x 0.6 sq m and a nonfocusing fringe field profile are examined. The functions of the control system, which is approximately 80 percent complete, are explained. The testing of several beam monitors and the development of a monitor system with two RF cavities are discussed.

Penner, S.; Ayres, R. L.; Cutler, R. I.; Debenham, P. H.; Lindstrom, E. R.

1985-10-01

456

Los Alamos National Laboratory Develops ''Quick to WIPP'' Strategy  

SciTech Connect

The Cerro Grande forest fire in May of 2000 and the terrorist events of September 11, 2001 precipitated concerns of the vulnerability of legacy contact-handled (CH), high-wattage transuranic (TRU) waste stored at Los Alamos National Laboratory (LANL). An analysis of the 9,100 cubic meters of stored CH-TRU waste revealed that 400 cubic meters or 4.5% of the inventory represented 61% of the risk. The analysis further showed that this 400 cubic meters was contained in only 2,000 drums. These facts and the question ''How can the disposition of this waste to the Waste Isolation Pilot Plant (WIPP) be accelerated?'' formed the genesis of LANL's Quick to WIPP initiative.

Jones, R.; Allen, G.; Kosiewicz, S.; Martin, B,; LANL; Nunz, J.; Biedscheid, J.; Sellmer, T.; Willis, J.; Orban, J.; Liekhus, K.; Djordjevic, S.

2003-02-25

457

Los Alamos National Laboratory: MegaMath for Elementary Students  

NSDL National Science Digital Library

MegaMath is a project of the Computer Research and Applications Group at Los Alamos National Laboratory that aims to make mathematics accessible to young children. The collaborative project represents the work of classroom teachers, mathematicians, students in education and computer science, elementary school and high school students, school administrators, computer scientists, and parents. An image map is used to invite viewers to explore topics in mathematics, try out games, and read about the project or browse the glossary and reference section. Teachers will find some interesting activities posted, along with related materials on: the Big Ideas and Key Concepts, Background Info, Vocabulary, NCTM Standards, Evaluation, Materials and Preparation, and information For Further Study. MegaMath invites others to join the collaboration via the Internet.

458

Decommissioning the UHTREX Reactor Facility at Los Alamos, New Mexico  

SciTech Connect

The Ultra-High Temperature Reactor Experiment (UHTREX) facility was constructed in the late 1960s to advance high-temperature and gas-cooled reactor technology. The 3-MW reactor was graphite moderated and helium cooled and used 93% enriched uranium as its fuel. The reactor was run for approximately one year and was shut down in February 1970. The decommissioning of the facility involved removing the reactor and its associated components. This document details planning for the decommissioning operations which included characterizing the facility, estimating the costs of decommissioning, preparing environmental documentation, establishing a system to track costs and work progress, and preplanning to correct health and safety concerns in the facility. Work to decommission the facility began in 1988 and was completed in September 1990 at a cost of $2.9 million. The facility was released to Department of Energy for other uses in its Los Alamos program.

Salazar, M.; Elder, J.

1992-08-01

459

Scheduling at the Los Alamos Neutron Science Center (LANSCE)  

SciTech Connect

The centerpieces of the Los Alamos Neutron Science Center (LANSCE) are a half-mile long 800-MeV proton linear accelerator and proton storage ring. The accelerator, storage ring, and target stations provide the protons and spallation neutrons that are used in the numerous basic research and applications experimental programs supported by the US Department of Energy. Experimental users, facility maintenance personnel, and operations personnel must work together to achieve the most program benefit within defined budget and resource constraints. In order to satisfy the experimental users programs, operations must provide reliable and high quality beam delivery. Effective and efficient scheduling is a critical component to achieve this goal. This paper will detail how operations scheduling is presently executed at the LANSCE accelerator facility.

Gallegos, F.R.

1999-02-01

460

Los Angeles air pollution and asthma in children  

SciTech Connect

Indices of air pollution, meteorological conditions and airborne allergens were correlated with emergency room census and hospitalizations for asthma at the Childrens Hospital of Los Angeles (CHLA) during a six-month period encompassing high and low periods of air pollution. In addition, patients in residence at the Sunair Home for Asthmatic Children (SHAC) were studied during a 10-day peak air pollution period. Increases in asthma emergency room visits and hospitalizations correlated significantly with increases in nitric oxide, coefficient of haze, hydrocarbons, Santa Ana wind conditions and total airborne allergen counts. Significant correlations were also found with decreases in ambient levels of O3, SO2, temperature and relative humidity. Among SHAC patients morning peak flow levels were significantly lower during the 10-day peak pollution period than during two control periods of low pollution. However, neither differences in clinical symptoms experienced by these patients nor their need for additional medication were observed.

Richards, W.; Azen, S.P.; Weiss, J.; Stocking, S.; Church, J.

1981-11-01

461

The Los ALamos Neutron Science Center Hydrogen Moderator System  

SciTech Connect

At the Los Alamos Neutron Science Center (LANSCE), spallation neutrons are produced by an 800-MeV proton beam interacting with tungsten targets. Gun-barrel-type penetrations through the heavy concrete and steel shielding that surround the targets collimate neutrons to form neutron beams used for scattering experiments. Two liquid hydrogen moderators of one-liter volume each are positioned adjacent to the neutron-production targets. Some of the neutrons that pass through a moderator interact with or scatter from protons in the hydrogen. The neutron-proton interaction reduces the energy or moderates neutrons to lower energies. Lower energy 'moderated' neutrons are the most useful for some neutron scattering experiments. We provide a description of the LANSCE hydrogen-moderator system and its cryogenic performance with proton beams of up to 125 micro-amp average current.

Jarmer, J. J.; Knudson, J. N. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)

2006-04-27

462

Neutron Capture Experiments Using the DANCE Array at Los Alamos  

SciTech Connect

The Detector for Advanced Neutron Capture Experiments (DANCE) is designed for neutron capture measurements on very small and/or radioactive targets. The DANCE array of 160 BaF{sub 2} scintillation detectors is located at the Lujan Center at the Los Alamos Neutron Science Center (LANSCE). Accurate measurements of neutron capture data are important for many current applications as well as for basic understanding of neutron capture. The gamma rays following neutron capture reactions have been studied by the time-of-flight technique using the DANCE array. The high granularity of the array allows measurements of the gamma-ray multiplicity. The gamma-ray multiplicities and energy spectra for different multiplicities can be measured and analyzed for spin and parity determination of the resolved resonances.

Dashdorj, D. [North Carolina State University, Raleigh, NC 27695 (United States); MonAme Scientific Research Center, Ulaanbaatar (Mongolia); Mitchell, G. E. [North Carolina State University, Raleigh, NC 27695 (United States); Triangle Universities Nuclear Laboratory, Durham, NC 27708 (United States); Baramsai, B.; Chyzh, A.; Walker, C. [North Carolina State University, Raleigh, NC 27695 (United States); Agvaanluvsan, U. [MonAme Scientific Research Center, Ulaanbaatar (Mongolia); Stanford University, Palo Alto, CA 94305 (United States); Becker, J. A.; Parker, W.; Sleaford, B.; Wu, C. Y. [Lawrence Livermore National Laboratory, Livermore, CA 9455 (United States); Bredeweg, T. A.; Couture, A.; Haight, R. C.; Jandel, M.; Rundberg, R. S.; Ullmann, J. L.; Vieira, D. J.; Wouters, J. M. [Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Krticka, M.; Becvar, F. [Charles University in Prague, CZ-180 00 Prague 8 (Czech Republic)

2009-03-31

463

Mushroom growing project at the Los Humeros, Mexico geothermal field  

SciTech Connect

There are several projects of direct (non-electrical) use of geothermal energy in Mexico. Personnel of the Comision Federal de Electricidad (CFE) have experience in various of these projects, like drying of timber and fruits, space heating, food processing, etc. Taking this in consideration, CFE built the Los Humeros mushroom plant using for heat source the geothermal steam from Well H-1. The main purpose of the project was to take advantage of residual geothermal energy in a food production operation and to develop the appropriate technology. In 1992, existing installations were renovated, preparing appropriate areas for pasteurization, inoculation and production. The mushroom Pleurotus ostreatus var. florida and columbinus was used. A year later, CFE proposed the construction of improved facilities for growing edible mushrooms. New materials and equipment, as well as different operation conditions, were proposed on the basis of the experience gained in the initial project. The construction and renovation activities were completed in 1994.

Rangel, M.E.R. [Comision Federal de Electricidad (Mexico)

1998-12-01

464

The Laser Safety Program at Los Alamos National Laboratory  

SciTech Connect

The Laser Safety Program at the Los Alamos National Laboratory was formalized in April, 1991, with the publication of a document, {open_quotes}Lasers,{close_quotes} modeled on the ANSIZ136.1 standard. This program has received such wide acceptance by the laser community and line managers that the original Laser Safety Program document has become a Laboratory standard on lasers. As a benchmark of the success of this program is that the Laboratory has experienced no disabling eye injuries because of laser operations since July, 1990, to be compared with a disabling laser eye injury that used to average one every eighteen months prior to the time the formal program was established. The Laboratory Laser Safety Program and program elements will be presented and discussed.

Hyer, R.

1997-02-01

465

The legacy and future of CFD at Los Alamos  

SciTech Connect

The early history is presented of the prolific development of CFD methods in the Fluid Dynamics Group (T-3) at Los Alamos National Laboratory in the years from 1958 to the late 1960`s. Many of the currently used numerical methods--PIC, MAC, vorticity-stream-function, ICE, ALE methods and the {kappa}-{var_epsilon} method for turbulence--originated during this time. The rest of the paper summarizes the current research in T-3 for CFD, turbulence and solids modeling. The research areas include reactive flows, multimaterial flows, multiphase flows and flows with spatial discontinuities. Also summarized are modern particle methods and techniques developed for large scale computing on massively parallel computing platforms and distributed processors.

Johnson, N.L. [Los Alamos National Lab., NM (United States). Theoretical Div.

1996-06-01

466

LANSCE (Los Alamos Neutron Scattering Center) target data collection system  

SciTech Connect

The Los Alamos Neutron Scattering Center (LANSCE) Target Data Collection System is the result of an effort to provide a base of information from which to draw conclusions on the performance and operational condition of the overall LANSCE target system. During the conceptualization of the system several purposes and goals were defined. A survey was made of custom as well as off the shelf hardware and software which was capable of meeting these goals. The first stage of this system was successfully implemented for the LANSCE run cycle 52. From the operational experience gained thus far with the LANSCE Target Data Collection System, it would appear as though this system will indeed meet all of the previously defined requirements that seem to develop after a new system is installed.

Kernodle, A.K. (Los Alamos National Lab., NM (USA))

1988-01-01

467

Los Alamos National Laboratory support to IAEA environmental safeguards  

SciTech Connect

The nuclear and radiochemistry group provides sample preparation and analysis support to the International Atomic Energy Agency (IAEA) Network of Analytical Laboratories (NWAL). These analyses include both non-destructive (alpha and gamma-ray spectrometry) and destructive (thermal ionization mass spectrometry and inductively coupled plasma mass spectrometry) methods. On a bi-annual basis the NWAL laboratories are invited to meet to discuss program evolution and issues. During this meeting each participating laboratory summarizes their efforts over the previous two years. This presentation will present Los Alamos National Laboratories efforts in support of this program. Data showing results from sample and blank analysis will be presented along with capability enhancement and issues that arose over the previous two years.

Steiner, Robert E [Los Alamos National Laboratory; Dry, Don E [Los Alamos National Laboratory; Roensch, Fred R [Los Alamos National Laboratory; Kinman, Will S [Los Alamos National Laboratory; Roach, Jeff L [Los Alamos National Laboratory; La Mont, Stephen P [Los Alamos National Laboratory

2010-12-01

468

Status of the Los Alamos tritium beta decay experiment  

SciTech Connect

The Los Alamos tritium experiment employs a gaseous tritium source and a magnetic spectrometer to determine the mass of the electron antineutrino from the shape of the tritium beta spectrum. Since publication of the first result from this apparatus (m/sub nu/ < 27 eV at 95% confidence), work has concentrated on improving the data rates. A 96-element Si microstrip array detector has been installed to replace the single proportional counter at the spectrometer focus, resulting in greatly increased efficiency. Measurements of the 1s photoionization spectrum of Kr now obviate the need for reliance on the theoretical shakeup and shakeoff spectrum of Kr in determining the spectrometer resolution. 19 refs., 3 figs.

Robertson, R.G.H.; Bowles, T.J.; Wark, D.L.; Wilkerson, J.F.; Knapp, D.A.

1989-01-01

469

ACCELERATION OF LOS ALAMOS NATIONAL LABORATORY TRANSURANIC WASTE DISPOSITION  

SciTech Connect

One of Los Alamos National Laboratory's (LANL's) most significant risks is the site's inventory of transuranic waste retrievably stored above and below-ground in Technical Area (TA) 54 Area G, particularly the dispersible high-activity waste stored above-ground in deteriorating facilities. The high activity waste represents approximately 50% (by activity) of the total 292,000 PE-Ci inventory remaining to be disposed. The transuramic waste inventory includes contact-handled and remote-handled waste packaged in drums, boxes, and oversized containers which are retrievably stored both above and below-ground. Although currently managed as transuranic waste, some of the inventory is low-level waste that can be disposed onsite or at approved offsite facilities. Dispositioning the transuranic waste inventory requires retrieval of the containers from above and below-ground storage, examination and repackaging or remediation as necessary, characterization, certification and loading for shipment to the Waste Isolation Pilot Plant in Carlsbad New Mexico, all in accordance with well-defined requirements and controls. Although operations are established to process and characterize the lower-activity contact-handled transuranic waste containers, LAN L does not currently have the capability to repack high activity contact-handled transuranic waste containers (> 56 PE-Ci) or to process oversized containers with activity levels over 0.52 PE-Ci. Operational issues and compliance requirements have resulted in less than optimal processing capabilities for lower activity contact-handled transuranic waste containers, limiting preparation and reducing dependability of shipments to the Waste Isolation Pilot Plant. Since becoming the Los Alamos National Laboratory contract in June 2006, Los Alamos National Security (LANS) L.L.C. has developed a comprehensive, integrated plan to effectively and efficiently disposition the transuranic waste inventory, working in concert with the Department of Energy Los Alamos Site Office, Carlsbad Field Office and the Department of Energy Headquaeters. Rather than simply processing containers as retrieved, the plan places priority on efficient curie disposition, a direct correlation to reducing risk. Key elements of the approch include balancing inventory and operational risks, tailoring methods to meet requirements, optimizing existing facilities, equipment and staff, and incorporating best practices from other Department of Energy sites. With sufficient funding this will enable LANL to ship the above-ground high activity contact-handled transuranic waste offsite by the end of Fiscal Year (FY) 2007 and to disposition the remaining above- and below-ground contact-handled and remote-handled transuranic waste inventory by December 2010. Nearly 70% of the contact-handled transuranic waste containers, including the high activity waste, require processing and repackaging before characterization and certification for shipment to the Waste Isolation Pilot Plant. LANL is employing a balanced risk approach that accomplishes significant long-term risk reduction by accepting short-term increased facility operations risk under well-developed and justified interim controls. Reviews of facility conditions and additional analyses show that the Waste Characterization, Reduction and Repackaging Facility and the Radioassay and Nondestructive Testing Facility are the most appropriate facilities to safetly remediate, repackage, and ship lower activity and the remaining high activity drums. Updated safety documentation supporting limited Hazard Category 2 operations in these facilities has been developed. Once approved, limited-term operations to process the high activity drums can begin in early 2007, building upon the experience base established performing Hazard Category 3 operations processing lower activity waste in these facilities. LANL is also implementing a series of actions to improve and sustain operations for processing contact-handled transuranic waste inventory. Building 412 Decontamination and Volume Facility and Dom

O'LEARY, GERALD A. [Los Alamos National Laboratory

2007-01-04

470

Operational status of the Los Alamos neutron science center (LANSCE)  

SciTech Connect

The Los Alamos Neutron Science Center (LANSCE) accelerator and beam delivery complex generates the proton beams that serve three neutron production sources; the thermal and cold source for the Manuel Lujan Jr. Neutron Scattering Center, the Weapons Neutron Research (WNR) high-energy neutron source, and a pulsed Ultra-Cold Neutron Source. These three sources are the foundation of strong and productive multi-disciplinary research programs that serve a diverse and robust user community. The facility also provides multiplexed beams for the production of medical radioisotopes and proton radiography of dynamic events. The recent operating history of these sources will be reviewed and plans for performance improvement will be discussed, together with the underlying drivers for the proposed LANSCE Refurbishment project. The details of this latter project are presented in a separate contribution.

Jones, Kevin W [Los Alamos National Laboratory; Erickson, John L [Los Alamos National Laboratory; Schoenberg, Kurt F [Los Alamos National Laboratory

2010-01-01

471

Tiger Team Assessment of the Los Alamos National Laboratory  

SciTech Connect

The Management Subteam conducted a management and organization assessment of environment, safety, and health (ES H) activities performed by the Los Alamos National Laboratory (LANL) and onsite contractor personnel. The objectives of the assessment were to (1) evaluate the effectiveness of management systems and practices in terms of ensuring environmental compliance and the safety and health of workers and the general public, (2) identify key findings, and (3) identify root causes for all ES H findings and concerns. The scope of the assessment included examinations of the following from an ES H perspective: (1) strategic and program planning; (2) organizational structure and management configuration; (3) human resource management, including training and staffing; (4) management systems, including performance monitoring and assessment; (5) conduct of operations; (6) public and institutional interactions; and (7) corporate'' parent support.

Not Available

1991-11-01

472

A data automation system at Los Alamos National Laboratory.  

SciTech Connect

Idaho National Engineering and Environmental Laboratory (INEEL) has developed an automated computer program, Data Review Expert System (DRXS), for reviewing nondestructive assay (NDA) data. DRXS significantly reduces the data review time needed to meet characterization requirements for the Waste Isolation Pilot Plant (WIPP). Los Alamos National Laboratory (LANL) is in the process of developing a computer program, Software System Logic for Intelligent Certification (SSLIC), to automate other tasks associa ted with characterization of Transuranic Waste (TRU) samples. LANL has incorporated a version of DRXS specific to LANL's isotopic data into SSLIC. This version of SSLIC was audited by the National Transuranic Program on October, 24, 2001. This paper will present the results of the audit, and discuss future plans for SSLIC including the integration on the INEELLANL developed Rule Editor.

Betts, S. E. (Stephen E.); Schneider, C. M. (Connie M.); Pickrell, M. M. (Mark Manley)

2001-01-01

473

Neutron Capture Experiments Using the DANCE Array at Los Alamos  

NASA Astrophysics Data System (ADS)

The Detector for Advanced Neutron Capture Experiments (DANCE) is designed for neutron capture measurements on very small and/or radioactive targets. The DANCE array of 160 BaF2 scintillation detectors is located at the Lujan Center at the Los Alamos Neutron Science Center (LANSCE). Accurate measurements of neutron capture data are important for many current applications as well as for basic understanding of neutron capture. The gamma rays following neutron capture reactions have been studied by the time-of-flight technique using the DANCE array. The high granularity of the array allows measurements of the gamma-ray multiplicity. The gamma-ray multiplicities and energy spectra for different multiplicities can be measured and analyzed for spin and parity determination of the resolved resonances.

Dashdorj, D.; Mitchell, G. E.; Baramsai, B.; Chyzh, A.; Walker, C.; Agvaanluvsan, U.; Becker, J. A.; Parker, W.; Sleaford, B.; Wu, C. Y.; Bredeweg, T. A.; Couture, A.; Haight, R. C.; Jandel, M.; Rundberg, R. S.; Ullmann, J. L.; Vieira, D. J.; Wouters, J. M.; Krti?ka, M.; Be?vá?, F.

2009-03-01

474

Los Alamos National Laboratory TRU waste sampling projects  

SciTech Connect

The Los Alamos National Laboratory (LANL) has begun characterizing transuranic (TRU) waste in order to comply with New Mexico regulations, and to prepare the waste for shipment and disposal at the Waste Isolation Pilot Plant (WIPP), near Carlsbad, New Mexico. Sampling consists of removing some head space gas from each drum, removing a core from a few drums of each homogeneous waste stream, and visually characterizing a few drums from each heterogeneous waste stream. The gases are analyzed by GC/MS, and the cores are analyzed for VOC`s and SVOC`s by GC/MS and for metals by AA or AE spectroscopy. The sampling and examination projects are conducted in accordance with the ``DOE TRU Waste Quality Assurance Program Plan`` (QAPP) and the ``LANL TRU Waste Quality Assurance Project Plan,`` (QAPjP), guaranteeing that the data meet the needs of both the Carlsbad Area Office (CAO) of DOE and the ``WIPP Waste Acceptance Criteria, Rev. 5,`` (WAC).

Yeamans, D.; Rogers, P.; Mroz, E.

1997-02-01

475

Defense programs industrial partnerships at Los Alamos National Laboratory  

SciTech Connect

The US Department of Energy`s Defense Programs face unprecedented challenges of stewardship for an aging nuclear stockpile, cessation of nuclear testing, reduced federal budgets, and a smaller manufacturing complex. Partnerships with industry are essential in developing technology, modernizing the manufacturing complex, and maintaining the safety and reliability of the nation`s nuclear capability. The past decade of federal support for industrial partnerships has promoted benefits to US industrial competitiveness. Recent shifts in government policy have re-emphasized the importance of industrial partnerships in accomplishing agency missions. Nevertheless, abundant opportunities exist for dual-benefit, mission-driven partnerships between the national laboratories and industry. Experience at Los Alamos National Laboratory with this transition is presented.

Freese, K.B. [Los Alamos National Lab., NM (United States). Industrial Partnership Office

1996-10-01

476

Study of polyelectrolytes for Los Alamos National Laboratory. Final report  

SciTech Connect

To assess the safety of a potential radioactive waste repository, analysis of the fluid solution containing low levels of activity need to be performed. In some cases, the radioactivity would be so weak (3--30 pCi/L) that the solution must be concentrated for measurement. For this purpose, Los Alamos National Laboratory scientists are synthesizing some water soluble polyelectrolytes, which, because they are strong complexing agents for inorganic cations, can concentrate the radioelements in solution. To assist in characterization of these polyelectrolytes, the author has performed experiments to determine physico-chemical constants, such as pKa values and stability constants. The complexation constants between both polyelectrolytes and europium were determined by two methods: solvent extraction and ion exchange. Results are presented.

Labonne, N. [Florida State Univ., Tallahassee, FL (United States)

1994-11-01

477

Medical care capacity for influenza outbreaks, Los Angeles.  

PubMed

In December 1997, media reported hospital overcrowding and "the worst [flu epidemic] in the past two decades" in Los Angeles County (LAC). We found that rates of pneumonia and influenza deaths, hospitalizations, and claims were substantially higher for the 1997-98 influenza season than the previous six seasons. Hours of emergency medical services (EMS) diversion (when emergency departments could not receive incoming patients) peaked during the influenza seasons studied; the number of EMS diversion hours per season also increased during the seasons 1993-94 to 1997-98, suggesting a decrease in medical care capacity during influenza seasons. Over the seven influenza seasons studied, the number of licensed beds decreased 12%, while the LAC population increased 5%. Our findings suggest that the capacity of health-care systems to handle patient visits during influenza seasons is diminishing. PMID:12023911

Glaser, Carol A; Gilliam, Sabrina; Thompson, William W; Dassey, David E; Waterman, Stephen H; Saruwatari, Mitchell; Shapiro, Stanley; Fukuda, Keiji

2002-06-01

478

The performance of the Los Alamos Proton Storage Ring  

SciTech Connect

The Proton Storage Ring (PSR) now in operation at Los Alamos is a high-current accumulator that generates intense 800-MeV proton pulses for driving the Los Alamos Neutron Scattering Center (LANSCE) spallation source. The ring compresses up to 1000-..mu..s-long macropulses from the LAMPF linac into 250-ns bunches and ejects them to a neutron-production target, providing an output optimized for thermal-neutron-scattering research. The design pulse rate and peak pulse intensity of PSR are 12 Hz and 5.2 . 10/sup 13/ protons per pulse (ppp), yielding 100 ..mu..A average current when full performance is reached. This paper summarizes commissioning results and operational experience in the two years since first beam. The PSR has operated in production at average currents up to 30 ..mu..A and has reached a peak intensity of 3.4 . 10/sup 13/ ppp. These achievements represents 30% and 65% of the design objectives. Higher current production has been inhibited by beam losses during accumulation and extraction. Therefore, experiments to understand loss mechanisms have occupied a large fraction of the commissioning effort. Correction of an extraction-channel aperture restriction identified late in 1986 should dramatically reduce extraction losses, which will permit higher current production in 1987. Beam tests in the 10/sup 13/-ppp range have indicated the presence of a collective instability tentatively identified as transverse. However, by suitable parameter adjustments, the instability threshold can be pushed above the top charge-level attainable with the existing H /sup -/ source.

Lawrence, G.P.

1987-03-01

479

Post-Cold War Science and Technology at Los Alamos  

NASA Astrophysics Data System (ADS)

Los Alamos National Laboratory serves the nation through the development and application of leading-edge science and technology in support of national security. Our mission supports national security by: ensuring the safety, security, and reliability of the U.S. nuclear stockpile; reducing the threat of weapons of mass destruction in support of counter terrorism and homeland defense; and solving national energy, environment, infrastructure, and health security problems. We require crosscutting fundamental and advanced science and technology research to accomplish our mission. The Stockpile Stewardship Program develops and applies, advanced experimental science, computational simulation, and technology to ensure the safety and reliability of U.S. nuclear weapons in the absence of nuclear testing. This effort in itself is a grand challenge. However, the terrorist attack of September 11, 2001, reminded us of the importance of robust and vibrant research and development capabilities to meet new and evolving threats to our national security. Today through rapid prototyping we are applying new, innovative, science and technology for homeland defense, to address the threats of nuclear, chemical, and biological weapons globally. Synergistically, with the capabilities that we require for our core mission, we contribute in many other areas of scientific endeavor. For example, our Laboratory has been part of the NASA effort on mapping water on the moon and NSF/DOE projects studying high-energy astrophysical phenomena, understanding fundamental scaling phenomena of life, exploring high-temperature superconductors, investigating quantum information systems, applying neutrons to condensed-matter and nuclear physics research, developing large-scale modeling and simulations to understand complex phenomena, and exploring nanoscience that bridges the atomic to macroscopic scales. In this presentation, I will highlight some of these post-cold war science and technology advances including our national security contributions, and discuss some of challenges for Los Alamos in the future.

Browne, John C.

2002-04-01

480

SNM holdup assessment of Los Alamos exhaust ducts. Final report  

SciTech Connect

Fissile material holdup in glovebox and fume hood exhaust ducting has been quantified for all Los Alamos duct systems. Gamma-based, nondestructive measurements were used to quantify holdup. The measurements were performed during three measurement campaigns. The first campaign, Phase I, provided foot-by-foot, semiquantitative measurement data on all ducting. These data were used to identify ducting that required more accurate (quantitative) measurement. Of the 280 duct systems receiving Phase I measurements, 262 indicated less than 50 g of fissile holdup and 19 indicated fissile holdup of 50 or more grams. Seven duct systems were measured in a second campaign, called Series 1, Phase II. Holdup estimates on these ducts ranged from 421 g of {sup 235}U in a duct servicing a shut-down uranium-machining facility to 39 g of {sup 239}Pu in a duct servicing an active plutonium-processing facility. Measurements performed in the second campaign proved excessively laborious, so a third campaign was initiated that used more efficient instrumentation at some sacrifice in measurement quality. Holdup estimates for the 12 duct systems measured during this third campaign ranged from 70 g of {sup 235}U in a duct servicing analytical laboratories to 1 g of {sup 235}U and 1 g of {sup 239}Pu in a duct carrying exhaust air to a remote filter building. These quantitative holdup estimates support the conclusion made at the completion of the Phase I measurements that only ducts servicing shut-down uranium operations contain about 400 g of fissile holdup. No ventilation ducts at Los Alamos contain sufficient fissile material holdup to present a criticality safety concern.

Marshall, R.S.

1994-02-01

481

Recent advances in Neogene biostratigraphy of Los Angeles basin  

SciTech Connect

The stratigraphic record associated with continental margin basins represents, in varying degrees, the dynamic nature of the oceanographic, sedimentary and tectonic evolution of individual basins. With the high interest in the present and potential petroleum reserves contained in these deposits, there has been renewed interest in basinal correlations between known producing formations. The Los Angeles basin is one of the most prolific basins in California. It is one of the Neogene basins along the California continental margin that was formed by tensional mechanisms related to complex wrench tectonism. These tensional mechanisms caused the pull-apart tectonics which resulted in rapid deepening of many of the southern California margin basins. Deposition in these basins was controlled by local and regional tectonics, in conjunction with climatic and oceanographic events of the later Tertiary. For the last 60 years, the biostratigraphic framework for correlation between the oil fields of the Los Angeles basin has been based on benthic foraminiferal assemblages. These assemblages were used to correlate the Neogene clastic reservoirs across the basin. The reservoirs range in age from late middle Miocene to late Pliocene. The basic problem with intrabasinal correlations, based on the appearance and/or disappearance of benthic assemblages, is that the occurrence of the assemblage within a stratigraphic sequence may reflect the effect of local environmental variations rather than evolutionary changes. However, with the understanding of the tectonic, sedimentologic, and oceanographic history of the clastic reservoirs, correlations can be established using the benthic foraminiferal assemblages which will provide stratigraphic correlations in addition to environmental interpretations.

Blake, G.H.

1987-05-01

482

Analysis of rockfall hazards at Los Alamos National Laboratory  

SciTech Connect

In the early years at Los Alamos National Laboratory, rockfall hazards were intuitively recognized and avoided. Hence mesa tops were selected over canyon floors for construction sites, although some canyon bottoms were still used. The Omega West reactor site was located in a narrow portion of Los Alamos Canyon adjacent to 400 foot high vertical cliffs. In 1944, a quarter-mile long rock catcher was installed above the reactor to protect the facility from occasional rockfalls. In addition, an annual rock catcher inspection was initiated. Between 1944 and 1993, 24 separate rockfall events were documented; individual rocks trapped in the catcher ranged in size from 300 to 21,000 pounds. These rockfall inspection data were arranged into an annual exceedance series, and a frequency analysis was performed. This type of analysis is routinely employed in flood studies when stream gaging records are available. Prior to this study, however, such techniques had never been used with rockfall data. This analysis indicates that the annual rockfall series is approximately log-normally distributed, and that the 500-year rockfall event will probably exceed 187 tons. In addition, a Markov generation scheme, which preserves the statistics of observed logarithms from the historical data, was used to generate a synthetic rockfall series. These synthetic data suggest that the cliff face will retreat at an average rate approximating 2 to 3 centimeters per 1000 years. This rate is comparable to independently computed rates that range from 4 to 14 centimeters per 1000 years. These cliff-face erosion processes are important because they affect mesa-top trench burial operations of low-level radioactive wastes.

McLin, S.G.

1993-09-01

483

Public health impact of the 1992 Los Angeles civil unrest.  

PubMed

The Los Angeles civil unrest in April 1992 stunned the nation. The days of violence resulted in 53 deaths, 2,325 reported injuries, more than 600 buildings completely destroyed by fire, and approximately $735 million in total damages. The purpose of this paper is to give an overview of the activities of the Public Health Programs and Services Branch of the Los Angeles County Department of Health Services during and after the civil unrest and to illustrate the types of public health issues and problems that may result from large-scale civil disturbance. Public health agencies and jurisdictions should consider these issues in their disaster planning. Public Health Programs and Services Branch activities were directly affected by the violence and destruction. Women, Infants and Children Program vouchering sites and 20 drug program and alcohol recovery sites were damaged or burned and 15 county health centers closed during the unrest. At least 38 private medical and dental offices and 45 pharmacies were destroyed or damaged. County health authorities offered facilities to house relocated private care providers and filled prescriptions for medications where needed. The environmental health impact required the inspection of 2,827 burned and damaged sites for hazardous waste including asbestos; at 9 percent of the inspected sites, waste required special disposal. More than 1,000 food facilities suffered damage and required inspection before reopening. In the 3 months following the unrest, a 20-percent increase in disposal capacity was authorized at four county landfills to accommodate the disposal of debris. Violence was a public health issue of particular concern. The Centers for Disease Control and Prevention sent a team to study the violence from an epidemiologic perspective. The Federal agency also provided funding for televised children's talk shows dealing with reactions to the violence. PMID:8497562

Evans, C A

484

Los programas informáticos P2P y las nuevas perspectivas de la industria musical en Norteamérica y Europa  

Microsoft Academic Search

Internet puede calificarse como un verdadero catalizador social que avanza tendencias y comportamientos y que presenta constantes desafíos a los marcos jurídico-políticos y socioculturales de los países del mundo. En relación con la transmisión de datos por la red, uno de los problemas que ha ocasionado más controversia es el de los programas de intercambio de archivos en la red

Guillem Baladia Puche; Eduardo Riol Carvajal

2007-01-01

485

Ecological baseline studies in Los Alamos and Guaje Canyons County of Los Alamos, New Mexico. A two-year study  

SciTech Connect

During the summers of 1993 and 1994, the Biological Resource Evaluations Team (BRET) of the Environmental Protection Group (ESH-8) conducted baseline studies within two canyon systems, Los Alamos and Guaje Canyons. Biological data was collected within each canyon to provide background and baseline information for Ecological Risk models. Baseline studies included establishment of permanent vegetation plots within each canyon along the elevational gradient. Then, in association with the various vegetation types, surveys were conducted for ground dwelling insects, birds, and small mammals. The stream channels associated with the permanent vegetation plots were characterized and aquatic macroinvertebrates collected within the stream monthly throughout a six-month period. The Geographic Position System (GPS) in combination with ARC INFO was used to map the study areas. Considerable data was collected during these surveys and are summarized in individual chapters.

Foxx, T.S. [comp.

1995-11-01

486

NEPA and NHPA- successful decommissioning of historic Manhattan Project properties at Los Alamos National Laboratory, Los Alamos, New Mexico  

SciTech Connect

This paper describes experiences at Los Alamos National Laboratory during the process of planning and executing decommissioning and decontamination activities on a number of properties constructed as part of the Manhattan project. Many of these buildings had been abandoned for many years and were in deteriorating condition, in addition to being contaminated with asbestos, lead based paints and high explosive residues. Due to the age and use of the structures they were evaluated against criteria for the National Register of Historic Places. This process is briefly reviewed, along with the results, as well as actions implemented as a result of the condition and safety of the structures. A number of the structures have been decontaminated and demolished. Planning is still ongoing for the renovation of one structure, and the photographic and drawing records of the properties is near completion.

McGehee, E.D.; Pendergrass, A.K.

1997-05-21

487

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

Microsoft Academic Search

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

Rangan Gupta; Stephen M. Miller

2009-01-01

488

Radionuclide concentrations in pinto beans, sweet corn, and zucchini squash grown in Los Alamos Canyon at Los Alamos National Laboratory  

SciTech Connect

Pinto beans, sweet corn, and zucchini squash (Cucurbita pepo var. black beauty) were grown in a randomized complete-block field/pot experiment at a site that contained the highest observed levels of surface gross gamma radioactivity within Los Alamos Canyon (LAC) at Los Alamos National Laboratory. Soils as well as washed edible and nonedible crop tissues were analyzed for various radionuclides and heavy metals . Most radionuclides, with the exception of {sup 3}H and {sup tot}U, in soil from LAC were detected in significantly higher concentrations (p <0.01) than in soil collected from regional background (RBG) locations. Similarly, most radionuclides in edible crop portions of beans, squash, and corn were detected in significantly higher (p <0.01 and 0.05) concentrations than RBG. Most soil-to-plant concentration ratios for radionuclides in edible and nonedible crop tissues from LAC were within the default values given by the Nuclear Regulatory Commission and Environmental Protection Agency. All heavy metals in soils, as well as edible and nonedible crop tissues grown in soils from LAC, were within RBG concentrations. Overall, the total maximum net positive committed effective dose equivalent (CEDE)--the CEDE plus two sigma for each radioisotope minus background and then all positive doses summed--to a hypothetical 50-year resident that ingested 160 kg of beans, corn, and squash in equal proportions, was 74 mrem y{sup -1}. This dose was below the International Commission on Radiological Protection permissible dose limit (PDL) of 100 mrem y{sup -1} from all pathways; however, the addition of other internal and external exposure route factors may increase the overall dose over the PDL. Also, the risk of an excess cancer fatality, based on 74 mrem y{sup -1}, was 3.7 x 10{sup -5} (37 in a million), which is above the Environmental Protection Agency`s (acceptable) guideline of one in a million. 31 refs., 15 tabs.

Fresquez, P.R.; Mullen, M.A.; Naranjo, L. Jr.; Armstrong, D.R.

1997-05-01

489

The Los Alamos Science Pillars The Science of Signatures  

SciTech Connect

As a national security science laboratory, Los Alamos is often asked to detect and measure the characteristics of complex systems and to use the resulting information to quantify the system's behavior. The Science of Signatures (SoS) pillar is the broad suite of technical expertise and capability that we use to accomplish this task. With it, we discover new signatures, develop new methods for detecting or measuring signatures, and deploy new detection technologies. The breadth of work at Los Alamos National Laboratory (LANL) in SoS is impressive and spans from the initial understanding of nuclear weapon performance during the Manhattan Project, to unraveling the human genome, to deploying laser spectroscopy instrumentation on Mars. Clearly, SoS is a primary science area for the Laboratory and we foresee that as it matures, new regimes of signatures will be discovered and new ways of extracting information from existing data streams will be developed. These advances will in turn drive the development of sensing instrumentation and sensor deployment. The Science of Signatures is one of three science pillars championed by the Laboratory and vital to supporting our status as a leading national security science laboratory. As with the other two pillars, Materials for the Future and Information Science and Technology for Predictive Science (IS&T), SoS relies on the integration of technical disciplines and the multidisciplinary science and engineering that is our hallmark to tackle the most difficult national security challenges. Over nine months in 2011 and 2012, a team of science leaders from across the Laboratory has worked to develop a SoS strategy that positions us for the future. The crafting of this strategy has been championed by the Chemistry, Life, and Earth Sciences Directorate, but as you will see from this document, SoS is truly an Institution-wide effort and it has engagement from every organization at the Laboratory. This process tapped the insight and imagination of many LANL staff and managers and resulted in a strategy which focuses on our strengths while recognizing that the science of signatures is dynamic. This report highlights the interdependence between SoS, advances in materials science, and advances in information technology. The intent is that SoS shape and inform Los Alamos investments in nuclear forensics, nuclear diagnostics, climate, space, energy, and biosurveillence; the areas of leadership that you will read about in this strategy document. The Science of Signatures is still a relatively new strategic direction for the Laboratory. The primary purpose of this document is tell Laboratory staff how SoS is being managed and give them a chance to get involved. A second important purpose is to inform the Department of Energy and our customers of our capability growth in this important scientific area. Questions concerning the SoS strategy and input to it are welcomed and may be directed to any member of the SoS Leadership Council or to the Chemistry, Life, and Earth Science Directorate Office.

Smith, Joshua E. [Los Alamos National Laboratory; Peterson, Eugene J. [Los Alamos National Laboratory

2012-09-13

490

Groundwater quality in the Coastal Los Angeles Basin, California  

USGS Publications Warehouse

The Coastal Los Angeles Basin study unit is approximately 860 square miles and consists of the Santa Monica, Hollywood, West Coast, Central, and Orange County Coastal Plain groundwater basins (California Department of Water Resources, 2003). The basins are bounded in part by faults, including the Newport-Inglewood fault zone, and are filled with Holocene-, Pleistocene-, and Pliocene-age marine and alluvial sediments. The Central Basin and Orange County Coastal Plain are divided into a forebay zone on the northeast and a pressure zone in the center and southwest. The forebays consist of unconsolidated coarser sediment, and the pressure zones are characterized by lenses of coarser sediment divided into confined to semi-confined aquifers by lenses of finer sediments. The primary aquifer system in the study unit is defined as those parts of the aquifer system corresponding to the perforated intervals of wells listed in the California Department of Public Health (CDPH) database of public-supply wells. The majority of public-supply wells are drilled to depths of 510 to 1,145 feet, consist of solid casing from the land surface to a depth of about 300 to 510 feet, and are perforated below the solid casing. Water quality in the primary aquifer system may differ from that in the shallower and deeper parts of the aquifer systems.

Fram, Miranda S.; Belitz, Kenneth

2012-01-01

491

Organizational cultural survey of the Los Alamos Site  

SciTech Connect

An Organizational Survey (OS) was administered at the Los Alamos Site that queried employees on the subjects of organizational culture, various aspects of communications, employee commitment, work group cohesion, coordination of work, environmental, safety, and health concerns, hazardous nature of work, safety and overall job satisfaction. The purpose of the OS is to measure in a quantitative and objective way the notion of culture;'' that is, the values, attitudes, and beliefs of the individuals working within the organization. In addition, through the OS, a broad sample of individuals can be reached that would probably not be interviewed or observed during the course of a typical assessment. The OS also provides a descriptive profile of the organization at one point in time that can then be compared to a profile taken at a different point in time to assess changes in the culture of the organization. While comparisons among groups are made, it is not the purpose of this report to make evaluative statements of which profile may be positive or negative. However, using the data presented in this report in conjunction with other evaluative activities, may provide useful insight into the organization.

Not Available

1991-11-01

492

Organizational cultural survey of the Los Alamos Site  

SciTech Connect

An Organizational Survey (OS) was administered at the Los Alamos Site that queried employees on the subjects of organizational culture, various aspects of communications, employee commitment, work group cohesion, coordination of work, environmental, safety, and health concerns, hazardous nature of work, safety and overall job satisfaction. The purpose of the OS is to measure in a quantitative and objective way the notion of ``culture;`` that is, the values, attitudes, and beliefs of the individuals working within the organization. In addition, through the OS, a broad sample of individuals can be reached that would probably not be interviewed or observed during the course of a typical assessment. The OS also provides a descriptive profile of the organization at one point in time that can then be compared to a profile taken at a different point in time to assess changes in the culture of the organization. While comparisons among groups are made, it is not the purpose of this report to make evaluative statements of which profile may be positive or negative. However, using the data presented in this report in conjunction with other evaluative activities, may provide useful insight into the organization.

Not Available

1991-11-01

493

Lessons learned from decommissioning projects at Los Alamos National Laboratory  

SciTech Connect

This paper describes lessons learned over the last 20 years from 12 decommissioning projects at Los Alamos National Laboratory. These lessons relate both to overall program management and to management of specific projects during the planning and operations phases. The issues include waste management; the National Environmental Policy Act (NEPA); the Resource Conservation and Recovery Act (RCRA); the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA); contracting; public involvement; client/customer interface; and funding. Key elements of our approach are to be proactive; follow the observation method; perform field activities concurrently; develop strategies to keep reportable incidents from delaying work; seek and use programs, methods, etc., in existence to shorten learning curves; network to help develop solutions; and avoid overstudying and overcharacterizing. This approach results in preliminary plans that require very little revision before implementation, reasonable costs and schedules, early acquisition of permits and NEPA documents, preliminary characterization reports, and contracting documents. Our track record is good -- the last four projects (uranium and plutonium-processing facility and three research reactors) have been on budget and on schedule.

Salazar, M.

1995-09-01

494

Los Alamos National Laboratory 1995 self assessment report  

SciTech Connect

The Los Alamos National Laboratory (LANL) Safeguards and Security (S and S) Assurance Program (AP) is designed to ensure the adequacy and effectiveness of the LANL S and S program. The Assurance Program provides a mechanism for discovering deficiencies, determining causes, conducting risk assessments, implementing corrective actions, and documenting the assessment process. Selection of organizations for self assessments is based on the criteria established in the LANL S and S Assurance Program. For FY 1995, 12 organizations were selected for self assessments, these organizations are identified fin the schedule at Appendix A. The S and S topical areas selected for review in each organization varied depending on their security interests and included: Program Planning and Management (PPM); Protection Program Operations (PPO); Material Control and Accountability (MC and A); Computer and Communications Security (COMPSEC and COMSEC); Information Security (INFOSEC); Personnel Security (PERSEC); and Operational Security (OPSEC). The objective was to ascertain the effectiveness of S and S programs in each organization, its formality of operations, and its integration with the overall Laboratory S and S program. The goal was to meet both the DOE self-assessment requirements and the UC performance criteria and document the results.

NONE

1995-06-30

495

Building an artificial intelligence capability at Los Alamos  

SciTech Connect

In 1985, after three years of preliminary work, Management of the Los Alamos National Laboratory started an ambitious program to develop a strong technical capability in the rapidly emerging field of Artificial Intelligence/Knowledge Based Systems (AI/KBS). When this AI development program began, except for a few staff members doing basic AI research, AI was essentially nonexistent at the laboratory. The basics, including such things as AI computer hardware and software, literature, books, knowledgeable personnel, or even a general knowledge of what AI was, were most difficult if not impossible to find. For this reason, we had to approach the problem with a very broad perspective, which strongly addressed the basics while aiming toward more advanced AI program elements. Broad, intensive education was the ''bootstrapping'' tool used in this five year, multi-million dollar AI capability development program. Halfway through the program, our accomplishments indicate that the program is extremely successful. In terms of trained staff, active programs and ''state-of-the-art equipment,'' we have developed one of the strongest AI technical capabilities within the Department of Energy (DOE) and the Department of Defense(DOD). However, a great deal more must be done before the full potential of the program can be realized. 1 fig.

Marinuzzi, J.G.

1988-01-01

496

CCN, hygroscopicity, and activation kinetics of Los Angeles aerosol  

NASA Astrophysics Data System (ADS)

The CalNex field campaign was designed as a comprehensive regional air quality and climate assessment study with an emphasis on the interaction between air quality and climate change. The southern California region is an excellent location for the study of air quality and climate change due to the existence and interaction of biogenic, dust, and urban plumes. Research flights aboard the Center for Interdisciplinary Remotely-Piloted Aircraft Studies (CIRPAS) Twin Otter platform focused on the origin and evolution of the Los Angeles plume as it is advected across the basin and outflows into the Coachella valley and Mojave Desert. This study focuses on cloud condensation nuclei (CCN) measurements taken aboard the Twin Otter. A continuous flow streamwise thermal gradient chamber operating in scanning flow CCN analysis (SFCA) mode provided high resolution, in situ CCN spectra (0.4-0.8% supersaturation) once every 40 seconds. In conjuncture with other aerosol instrumentation aboard the Twin Otter, the data provide a comprehensive picture of the interaction of ambient aerosol with water vapor. The analysis presented then quantifies the relationship between aerosol size, chemical composition, mixing state, hygroscopicity, and activation kinetics of aerosol from the variety of sources sampled.

Lin, J. J.; Lathem, T. L.; Nenes, A.; Suski, K.; Cahill, J. F.; Prather, K. A.; Craven, J. S.; Metcalf, A. R.; Jonsson, H. H.; Flagan, R. C.; Seinfeld, J. H.

2010-12-01

497

Chemical decontamination technical resources at Los Alamos National Laboratory (2008)  

SciTech Connect

This document supplies information resources for a person seeking to create planning or pre-planning documents for chemical decontamination operations. A building decontamination plan can be separated into four different sections: Pre-planning, Characterization, Decontamination (Initial response and also complete cleanup), and Clearance. Of the identified Los Alamos resources, they can be matched with these four sections: Pre-planning -- Dave Seidel, EO-EPP, Emergency Planning and Preparedness; David DeCroix and Bruce Letellier, D-3, Computational fluids modeling of structures; Murray E. Moore, RP-2, Aerosol sampling and ventilation engineering. Characterization (this can include development projects) -- Beth Perry, IAT-3, Nuclear Counterterrorism Response (SNIPER database); Fernando Garzon, MPA-11, Sensors and Electrochemical Devices (development); George Havrilla, C-CDE, Chemical Diagnostics and Engineering; Kristen McCabe, B-7, Biosecurity and Public Health. Decontamination -- Adam Stively, EO-ER, Emergency Response; Dina Matz, IHS-IP, Industrial hygiene; Don Hickmott, EES-6, Chemical cleanup. Clearance (validation) -- Larry Ticknor, CCS-6, Statistical Sciences.

Moore, Murray E [Los Alamos National Laboratory

2008-01-01

498

Explorer at Los Alamos: A library for the future  

SciTech Connect

Since 1993, Los Alamos National Laboratory, has been developing World Wide Web (WWW) applications to facilitate access to vast quantities of information critical to the successful operation of a nuclear weapons facility Explorer is a web-based tool that integrates full-text search and retrieval technology, custom user in interface faces, user-friendly navigation tools, extremely large document collections, and data collection and workflow applications. Explorer`s first major thrust was to enable quick access to regulatory and policy information used by Department of Energy facilities throughout the country. Today, Explorer users can easily search document collections containing, millions of pages of information scattered across Web sites around the country. Over fifteen large applications containing multiple collections are searchable through Explorer, and the subject areas range from DOE regulations to quality management-related resources to technology transfer opportunities. Explorer has succeeded because it provides quick and easy access to stored data across the Web; it saves time and reduces costs in comparison with traditional information distribution, access, and retrieval methods.

Waters, M.; McDonald, J.

1998-03-01

499

High temperature efforts at Los Alamos National Laboratory  

SciTech Connect

With the potential for significant payoffs in chemical processing, separation science, and ``green technology``, inorganic membranes merit the increased attention they are currently receiving. Application of thin film deposition and characterization expertise at Los Alamos National Laboratory (LANL) to the fabrication of membranes has led to the development of two new membranes. The first is a zeolitic film formed by pulsed laser deposition (PLD). The material deposited is largely amorphous but yields an interesting microporous structure. The pores, roughly 10 to 15 A in diameter, run perpendicular to the substrate and, since the film is typically only a half micron thick, provide excellent flow rates. The PLD material has been deposited on quartz crystal microbalances (QCMS) to investigate its potential as a sensor. As such, it has shown discrimination of simple alcohol isomers. The second membrane, consisting of a composite metal structure, passes hydrogen exclusively. Currently, we are studying the possibility of incorporating the membrane in a hydrogen fuel cell using a methanol reformer.

Peachey, N.; Dye, R.

1995-12-01

500

Final Progress Report: Internship at Los Alamos National Laboratory  

SciTech Connect

Originally I was tasked fluidized bed modeling, however, I changed projects. While still working with ANSYS Fluent, I performed a study of particle tracks in glove boxes. This is useful from a Health-Physics perspective, dealing respirable particles that can be hazardous to the human body. I iteratively tested different amounts of turbulent particles in a steady-state flow. The goal of this testing was to discover how Fluent handles built-in Rosin-Rammler distributions for particle injections. I worked on the health physics flow problems and distribution analysis under the direction of two mentors, Bruce Letellier and Dave Decroix. I set up and ran particle injection calculations using Fluent. I tried different combinations of input parameters to produce sets of 500,000, 1 million, and 1.5 million particles to determine what a good test case would be for future experiments. I performed a variety of tasks in my work as an Undergraduate Student Intern at LANL this summer, and learned how to use a powerful CFD application in addition to expanding my skills in MATLAB. I enjoyed my work at LANL and hope to be able to use the experience here to further my career in the future working in a security-conscious environment. My mentors provided guidance and help with all of my projects and I am grateful for the opportunity to work at Los Alamos National Laboratory.

Dunham, Ryan Q. [Los Alamos National Laboratory

2012-08-10