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1

Una alternativa terapéutica para micosis superficiales An alternative therapy to superficial mycosis  

Microsoft Academic Search

RESUMEN: se realizaron ensayos in-vivo e in-vitro de una solución saturada de sacarosa, eugenol (0.4%v\\/v) y polietilenglicol 400 (0.4%v\\/v) para determinar su acción fungicida sobre cepas productoras de micosis superficiales y su genotoxicidad. A suspensiones de Microsporum canis, Trichophyton rubrum, Trichophyton mentagrophytes y Epidermophyton flocosum, se les agregó la solución de ensayo y se hicieron cultivos en agar Sabouraud para

2

Apporto di azoto al suolo e alle acque di scorrimento superficiale nelle aree forestali del progetto CONECOFOR  

Microsoft Academic Search

RIASSUNTO - Apporto di azoto al suolo e alle acque di scorrimento superficiale nelle aree forestali del progetto CONECOFOR - Nell'ambito del progetto CONECOFOR lo studio della chimica delle deposizioni atmosferiche nei siti forestali mira a valutare l'apporto di ioni depositati dall'atmosfera alla vegetazione, al suolo e alle acque superfi- ciali. Le aree forestali sono rappresentative di diverse condizioni geografiche

Silvia ARISCI; Rosario MOSELLO; Maria Cristina BRIZZIO; Andrea CARCANO

2003-01-01

3

Las Vegas  

NASA Technical Reports Server (NTRS)

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

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

2001-01-01

4

Estudiar las redes sociales: Aportes y perspectivas para las  

E-print Network

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

Paris-Sud XI, Université de

5

Las Posadas on Television  

E-print Network

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

1976-04-01

6

Las Vegas Strip History  

NSDL National Science Digital Library

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

DeMatteo, Deanna.

7

History: Las Vegas  

NSDL National Science Digital Library

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

8

The Las Campanas Redshift Survey  

Microsoft Academic Search

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

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

1996-01-01

9

EMPACT: THE LAS VEGAS INTERAGENCY PILOT PROGRAM  

EPA Science Inventory

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

10

todasuvida: Las personas con diabetes son ms  

E-print Network

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

11

Cadenas productivas y productividad de las Mipymes  

Microsoft Academic Search

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

Danielle Tomta; Cèsaire Chiatchoua

2010-01-01

12

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

Microsoft Academic Search

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

Carlos Kirby; Nicolau Brosa

2011-01-01

13

Las Vegas: An Unconventional History  

NSDL National Science Digital Library

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

2005-01-01

14

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

Microsoft Academic Search

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

Adel Ben Youssef; Ludovic Ragni

2008-01-01

15

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

Microsoft Academic Search

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

Lya Adlih Oros Méndez

2011-01-01

16

Las Vegas bets on a sure winner  

Microsoft Academic Search

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

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

1980-01-01

17

Incendio latente bajo las Tablas de Daimiel   

E-print Network

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

Rein, Guillermo

18

University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas  

E-print Network

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

Walker, Lawrence R.

19

University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas  

E-print Network

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

Hemmers, Oliver

20

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

Microsoft Academic Search

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

Lucía Isabel García Cebrián; Antonio Muñoz Porcar

2010-01-01

21

Premios Literarios Casa de las Américas, 1980  

E-print Network

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

1980-04-01

22

Investigacin La creciente amenaza de las invasiones biolgicas  

E-print Network

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

Espigares, Tíscar

23

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

Microsoft Academic Search

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

Luis Fernando Valenzuela

2011-01-01

24

University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas  

E-print Network

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

Hemmers, Oliver

25

University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas  

E-print Network

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

Hemmers, Oliver

26

University Libraries University of Nevada, Las Vegas University of Nevada, Las Vegas  

E-print Network

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

Hemmers, Oliver

27

El diseño y las industrias manufactureras irlandesas  

Microsoft Academic Search

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

Jordi Berrio

2005-01-01

28

Las culturas políticas del republicanismo histórico español  

Microsoft Academic Search

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

Román Miguel González

2004-01-01

29

Las Vegas bets on a CETA pair  

Microsoft Academic Search

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

Stevenson

1976-01-01

30

Evidencia sobre las Desinflaciones: Experiencia Internacional  

Microsoft Academic Search

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

Carlos Humberto Cardona; Adriana Pontón; Eduardo Sarmiento

1998-01-01

31

LAS Language Arts Supplement, English. Revised Edition.  

ERIC Educational Resources Information Center

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

DeAvila, Edward A.; Duncan, Sharon E.

32

AN IMPLEMENTATION OF THE ASPRS LAS STANDARD  

Microsoft Academic Search

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

Andre Samberg

2007-01-01

33

Optimal Speedup of Las Vegas Algorithms  

Microsoft Academic Search

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

Michael Luby; Alistair Sinclair; David Zuckerman

1993-01-01

34

Las proyecciones de población como método estadístico  

Microsoft Academic Search

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

F. J. C. Willekens

2012-01-01

35

Alcoholism and Drug Abuse in Las Juntas  

Microsoft Academic Search

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

Suzanne Wasserman

36

Premio Casa de las Américas 1995  

E-print Network

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

1995-10-01

37

New American Home 2004: Las Vegas, Nevada  

SciTech Connect

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

Not Available

2003-12-01

38

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

PubMed Central

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

MARZÁN-RODRÍGUEZ, Melissa; VARAS-DÍAZ, Nelson

2009-01-01

39

Regulation of las and rhl Quorum Sensing in Pseudomonas aeruginosa  

Microsoft Academic Search

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

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

1997-01-01

40

?Cuales son las amenazas o peligros volcanicos?  

USGS Publications Warehouse

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

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

2000-01-01

41

Nuevas tecnologías, democracia y eficiencia de las instituciones políticas  

Microsoft Academic Search

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

Joan Oriol Prats

2006-01-01

42

LANDSCAPE CHANGE OF THE LAS VEGAS VALLEY, 1972 TO 1998  

EPA Science Inventory

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

43

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

Microsoft Academic Search

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

Arnau Gonzàlez i Vilalta

2004-01-01

44

ESTADO DEL ARTE DE CREENCIAS Y ACTITUDES HACIA LAS MATEMÁTICAS  

Microsoft Academic Search

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

Genaro Hernández Salazar

2011-01-01

45

Advanced Airborne CO2 LAS System  

NASA Astrophysics Data System (ADS)

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

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

2009-12-01

46

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

E-print Network

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

Escolano, Francisco

47

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

E-print Network

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

Escolano, Francisco

48

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

E-print Network

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

Paris-Sud XI, Université de

49

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

E-print Network

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

Ruiz, Jesús M.

50

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

Microsoft Academic Search

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

Tito Yepes

2011-01-01

51

Las Cumbres Observatory Global Telescope Network  

NSDL National Science Digital Library

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

Las Cumbres Observatory

2007-07-02

52

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

NASA Astrophysics Data System (ADS)

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

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

2002-12-01

53

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2012-12-31

54

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2013-10-31

55

Relevamiento de HI en las Nubes de Magallanes  

NASA Astrophysics Data System (ADS)

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

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

56

Compact Groups of Galaxies in the Las Campanas Redshift Survey  

Microsoft Academic Search

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

S. S. Allam; D. L. Tucker

2000-01-01

57

Fingerprint Indexing Based on LAS Registration , Chao Zhang1  

E-print Network

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

Hao, Pengwei

58

LAS NUEVAS TECNOLOGÍAS PARA EL APOYO DE LOS PROCESOS EDUCATIVOS  

Microsoft Academic Search

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

Francisco Morfín

59

Integración de la enseñanza de las tic en la educación  

Microsoft Academic Search

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

Osmany Aguilera Almaguer; Madelín Aguilera Borja; Eduardo Peña Cruz

2011-01-01

60

Calidad del aire interior y salud en las viviendas  

E-print Network

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

61

Translational genomics of Vegetable Crops Las Vegas, NV  

E-print Network

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

Douches, David S.

62

EL TURISMO ELECTRÓNICO, UNA NECESIDAD PARA LAS EMPRESAS DEL SECTOR  

Microsoft Academic Search

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

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

2011-01-01

63

Chasing Pokemon - in pursuit of the LAS ideal  

Microsoft Academic Search

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

Chris Orsmond

64

Impacto de las tic en la enseñanza universitaria  

Microsoft Academic Search

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

Pere Marquès Graells

2008-01-01

65

Trazabilidad y Unificación de las escalas de Dureza en México  

Microsoft Academic Search

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

Alfredo Esparza Ramírez

66

Determinantes de las importaciones en Colombia: un análisis econométrico  

Microsoft Academic Search

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

Leonardo Villar

1985-01-01

67

University of Nevada, Las Vegas Faculty Senate Constitution  

E-print Network

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

Hemmers, Oliver

68

NIU 2014 LA&S Summer Academic Camps APPLICATION FORM  

E-print Network

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

Kostic, Milivoje M.

69

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

Microsoft Academic Search

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

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

2008-01-01

70

LAS - LAND ANALYSIS SYSTEM, VERSION 5.0  

NASA Technical Reports Server (NTRS)

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

Pease, P. B.

1994-01-01

71

El fenotipo de las mucinas en el esófago de Barrett  

PubMed Central

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

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

2011-01-01

72

Airborne Validation of Active CO2 LAS Measurements  

NASA Astrophysics Data System (ADS)

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

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

2009-12-01

73

The Land Analysis System (LAS) for multispectral image processing  

USGS Publications Warehouse

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

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

1988-01-01

74

Wintertime aerosol in Las Vegas, Nevada  

NASA Astrophysics Data System (ADS)

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

Brown, Steven G.

75

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

NASA Astrophysics Data System (ADS)

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

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

1991-03-01

76

School of ALLIED HEALTH UNIVERSITY OF NEVADA, LAS VEGAS  

E-print Network

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

Hemmers, Oliver

77

Wastewater treatment in Las Vegas, Santa Barbara, Honduras  

E-print Network

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

Hodge, Matthew M

2008-01-01

78

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

Microsoft Academic Search

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

Joaquin Viloria de la Hoz

2011-01-01

79

An overview of the Land Analysis System (LAS)  

NASA Technical Reports Server (NTRS)

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

Lu, Yun-Chi

1986-01-01

80

Compact Groups of Galaxies in the Las Campanas Redshift Survey  

E-print Network

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

S. S. Allam; D. L. Tucker

2000-06-12

81

LAS VEGAS--A SHOWCASE FOR AUTOMATED PEOPLE MOVER TECHNOLOGY  

Microsoft Academic Search

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

E S Neumann

1999-01-01

82

Las neuronas de la conciencia Rodrigo Quian Quiroga  

E-print Network

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

83

Las últimas obras de Usigli: Efebocracia o gerontocracia.  

E-print Network

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

Rodrí guez-Seda, Asela

1974-10-01

84

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

E-print Network

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

Dixon, Juan

85

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

E-print Network

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

Catholic University of Chile (Universidad Católica de Chile)

86

Teatro de las Bellas Artes de la Ciudad de México  

E-print Network

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

Mendoza Ló pez, Margarita

1985-04-01

87

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

Cancer.gov

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

88

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

Microsoft Academic Search

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

Mercedes Zaghi

2006-01-01

89

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

Microsoft Academic Search

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

Del Río Araújo

2005-01-01

90

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

E-print Network

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

Garcia-Alfaro, Joaquin

91

Compact Groups of Galaxies in the Las Campanas Redshift Survey  

Microsoft Academic Search

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

S. S. Allam; D. L. Tucker

1998-01-01

92

Las Rocas Nos Cuentan (Rocks Tell Their Stories)  

ERIC Educational Resources Information Center

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

Llerandi-Roman, Pablo A.

2012-01-01

93

Computando lo aspero Por que se cuelgan las computadoras?  

E-print Network

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

Figueira, Santiago

94

NEVADA UNIVERSITY TRANSPORTATION CENTER UNIVERSITY OF NEVADA, LAS VEGAS  

E-print Network

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

Hemmers, Oliver

95

Introduction Las Vegas is a place of continual reinvention. Due  

E-print Network

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

Hemmers, Oliver

96

Aprendizaje de las matemáticas utilizando una herramienta distribuida  

Microsoft Academic Search

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

Everth Rocha; Gabriel Gerónimo; Francisco Hernández

2005-01-01

97

Descubriendo el código digital de las levaduras vínicas  

Microsoft Academic Search

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

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

98

ESTRUCTURA DE LAS ACTITUDES HACIA EL CONSUMO ELECTRÓNICO  

Microsoft Academic Search

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

Cruz García Lirios

2011-01-01

99

Castelldefels Salut: Las redes sociales y la Atención Primaria  

Microsoft Academic Search

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

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

2012-01-01

100

Accesibilidad en las Aulas de la Web 2.0  

Microsoft Academic Search

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

Juan Gabriel; Sáenz Espitia

101

La educación en las matemáticas bajo un entorno tecnológico  

Microsoft Academic Search

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

Juan Carlos Briceño

2011-01-01

102

Efectos de las fusiones sobre el mercado financiero colombiano  

Microsoft Academic Search

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

Dairo Estrada

2005-01-01

103

University of Nevada Las Vegas School of Life Sciences  

E-print Network

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

Hemmers, Oliver

104

Selección de los principales problemas de seguridad de las vacunas  

Microsoft Academic Search

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

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

2008-01-01

105

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

ERIC Educational Resources Information Center

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

Ortuno, Marian

2012-01-01

106

CONCENTRACION INDUSTRIAL EN LAS REGIONES ESPAÑOLAS Y EUROPEAS  

Microsoft Academic Search

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

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

2010-01-01

107

UNIVERSIDAD DE LAS AM ERICAS PUEBLA Escuela de Ingenieria  

E-print Network

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

Navarro Pérez, Juan

108

UNIVERSIDAD DE VALLADOLID EDIFICIO DE LAS TECNOLOGIAS DE LA  

E-print Network

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

Palop del Río, Belén

109

Impacto de las regalías petroleras en el Departamento del Meta  

Microsoft Academic Search

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

Germán Humberto Hernández Leal

2004-01-01

110

Tree-Killing Las Conchas Fire in New Mexico  

USGS Multimedia Gallery

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

111

Las igualas médicas frente al seguro social (República Dominicana)  

Microsoft Academic Search

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

Isidoro Santana

1997-01-01

112

ALTERNATIVAS PARA LA OPTIMIZACIÓN DE LAS CAPACIDADES DE ALMACENAMIENTO  

Microsoft Academic Search

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

Daynier Marzo Cervera; Elsa Delgado Pérez; Clara Marrero Fornaris

2010-01-01

113

Control del dolor: Apoyo para las personas con cáncer  

Cancer.gov

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

114

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

Microsoft Academic Search

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

Ines Küster Boluda; Natalia Vila López; Asunción Hernández Fernández

2012-01-01

115

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

E-print Network

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

Hemmers, Oliver

116

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

Microsoft Academic Search

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

Francisco Perdomo N

2011-01-01

117

Geophysical Studies of the Las Vegas Urban Corridor  

NSDL National Science Digital Library

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

118

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

Microsoft Academic Search

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

Sydney A. Hare

2012-01-01

119

ATLAS DE LAS AVES EN INVIERNO Servicio de Vida Silvestre  

E-print Network

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

Carrascal, Luis M.

120

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

E-print Network

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

Rey Juan Carlos, Universidad

121

UNIVERSITY OF NEVADA, LAS VEGAS School of Social Work  

E-print Network

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

Ahmad, Sajjad

122

Solar hot water system installed at Las Vegas, Nevada  

NASA Technical Reports Server (NTRS)

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

1981-01-01

123

Chemistry and kinetics of LAS acid thermal decomposition  

Microsoft Academic Search

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

David W. Roberts; Séverine Lejeune

2002-01-01

124

GIS methodology for quantifying channel change in Las Vegas, Nevada  

USGS Publications Warehouse

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

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

2007-01-01

125

Source Water Assessment for the Las Vegas Valley Surface Waters  

NASA Astrophysics Data System (ADS)

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

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

2003-12-01

126

Comprehensive Analysis of Broadband Seismic Data in Las Vegas Valley  

NASA Astrophysics Data System (ADS)

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

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

2003-12-01

127

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

Code of Federal Regulations, 2010 CFR

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

2010-07-01

128

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

E-print Network

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

Ahmad, Sajjad

129

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

Federal Register 2010, 2011, 2012, 2013, 2014

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

2011-06-17

130

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

E-print Network

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

Escolano, Francisco

131

TDRSS ground terminal located in Las Cruces, New Mexico  

NASA Technical Reports Server (NTRS)

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

1988-01-01

132

El libro del Relogio del Palacio de las Horas  

NASA Astrophysics Data System (ADS)

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

Morales, J. D.

2009-08-01

133

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

E-print Network

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

Escolano, Francisco

134

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

Microsoft Academic Search

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

Paul Preston

2004-01-01

135

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

Microsoft Academic Search

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

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

2008-01-01

136

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

ERIC Educational Resources Information Center

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

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

137

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

Microsoft Academic Search

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

Carlos Manuel Abella Vázquez

2007-01-01

138

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

Microsoft Academic Search

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

Josep M. Duart; Francisco Lupiáñez

2008-01-01

139

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

Microsoft Academic Search

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

Manoel Baña Castro; Isabel Novo Cortí; Beatríz López González

2010-01-01

140

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

E-print Network

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

Ahmad, Sajjad

141

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

Microsoft Academic Search

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

Eva Aguayo; M. Carmen Guisan

2001-01-01

142

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

Microsoft Academic Search

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

Ligia Melo B; Nestor Espinosa

143

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

Microsoft Academic Search

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

Ligia Melo; Néstor Espinosa

2005-01-01

144

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

Microsoft Academic Search

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

Fernando Collantes

2003-01-01

145

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

Microsoft Academic Search

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

Cristina Gómez; Paola Valero

146

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

PubMed Central

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

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

1995-01-01

147

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

E-print Network

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

Escolano, Francisco

148

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

Microsoft Academic Search

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

Ernesto Torres; José Maria Rincón; Edinson Lozano

2011-01-01

149

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

Microsoft Academic Search

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

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

150

ROSAT Public PSPC Observations in the Las Campanas Redshift Survey  

E-print Network

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

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

1997-04-22

151

LAS homolog distribution shift during wastewater treatment and composting ecological implications  

SciTech Connect

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

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

1993-09-01

152

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

SciTech Connect

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

None

2013-12-31

153

mAJoR NeWSPAPeRS las Vegas Review-Journal  

E-print Network

Sports Radio 8755 W. Flamingo Rd. Las Vegas, NV 89147 (702) 876-1460 werlv.com KSoS-fm 90.5 Format 89119 (702) 735-8644 www.1057theoasis.com KomP-fm 92.3 Format: Rock 8755 W. Flamingo Rd. Las Vegas, NV-7300 lasvegas.cbslocal.com KXPt-fm 97.1 Format: Classic Rock 8755 W. Flamingo Rd. Las Vegas, NV 89147 (702) 876

Hemmers, Oliver

154

Las regiones Objetivo 1 españolas en la sociedad de la información: el comercio electrónico como elemento de desarrollo  

Microsoft Academic Search

RESUMEN Las tecnologías de la información y comunicación (TIC) constituyen una de las principales fuerzas de la globalización. El comercio electrónico aprovecha Internet para mejorar la competitividad de las empresas y territorios. En un escenario como el actual, este canal, por un lado, abre posibilidades de desarrollo para las regiones Objetivo 1, pero, por otro, refuerza los factores de crecimiento

Enrique Bernal Jurado; Juan Carlos Rodríguez Cohard

2003-01-01

155

La desigualdad en las intensidades energéticas y la composición de la producción. Un análisis para los países de la OCDE  

Microsoft Academic Search

Esta investigación analiza las desigualdades de las intensidades energéticas entre países de la OCDE, su evolución y sus causas. Estas intensidades constituyen uno de los principales factores determinantes de las emisiones per cápita y, por tanto, de las diferencias que se dan entre países y grupos de países. Se desarrolla una metodología que permite la descomposición de la desigualdad en

Juan Antonio Duro Moreno; Vicent Alcantara Escolano; Emilio Padilla Rosa

2009-01-01

156

La Transpiración - Movimiento del Agua a Través de las Plantas  

NSDL National Science Digital Library

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

157

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

PubMed Central

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

Cabeen, Matthew T.

2014-01-01

158

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

PubMed

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

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

2009-02-01

159

UN MODELO DE EVALUACIN DE LA CALIDAD DE LAS BIBLIOTECAS UNIVERSITARIAS DIGITALES BASADO EN TCNICAS DIFUSAS  

E-print Network

) están revolucionando las pautas de convivencia en la sociedad actual, afectando tanto a instituciones y revistas digitales, los tradicionales depósitos, reemplazados por los repositorios electrónicos de

Granada, Universidad de

160

Tcnicas de Investigacin y Manejo para la Conservacin de las Tortugas Marinas 199 Tcnicas de Investigacin y Manejo para la Conservacin de las Tortugas Marinas  

E-print Network

instalaciones y que se dispone de suficientes recursos financieros para el mantenimiento. Además deberán considerarse las siguientes advertencias: 1. Los viveros son muy costosos tanto en recursos financieros como

Prestwich, Ken

161

Atmospheric Radioxenon Measurements in North Las Vegas, NV  

SciTech Connect

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

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

2006-07-31

162

Assembly Bias of Dark Matter Halos in LasDamas  

NASA Astrophysics Data System (ADS)

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

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

2015-01-01

163

Identification of methyl triclosan and halogenated analogues in male common carp ( Cyprinus carpio) from Las Vegas Bay and semipermeable membrane devices from Las Vegas Wash, Nevada  

Microsoft Academic Search

Methyl triclosan and four halogenated analogues have been identified in extracts of individual whole-body male carp (Cyprinus carpio) tissue that were collected from Las Vegas Bay, Nevada, and Semipermeable Membrane Devices (SPMD) that were deployed in Las Vegas Wash, Nevada. Methyl triclosan is believed to be the microbially methylated product of the antibacterial agent triclosan (2, 4, 4'-trichloro-4-hydroxydiphenyl ether, Chemical

Thomas J. Leiker; Sonja R. Abney; Steven L. Goodbred; Michael R. Rosen

2009-01-01

164

Managing Floods and Resources at the Arroyo Las Positas  

SciTech Connect

Engineers and water resource professionals are challenged with protecting facilities from flood events within environmental resource protection, regulatory, and economic constraints. One case in point is the Arroyo Las Positas (ALP), an intermittent stream that traverses the Lawrence Livermore National Laboratory (LLNL) in Livermore, California. Increased runoff from post-drought rainfall, upstream development, and new perennial discharges from LLNL activities have resulted in increased dry weather flows and wetland vegetation. These new conditions have recently begun to provide improved habitat for the federally threatened California red-legged frog (Rana aurora draytonii; CRLF), but the additional vegetation diminishes the channel's drainage capacity and increases flood risk. When LLNL proposed to re-grade the channel to reestablish the 100-year flood capacity, traditional dredging practices were no longer being advocated by environmental regulatory agencies. LLNL therefore designed a desilting maintenance plan to protect LLNL facility areas from flooding, while minimizing impacts to wetland resources and habitat. The result was a combination of structural upland improvements and the ALP Five Year Maintenance Plan (Maintenance Plan), which includes phased desilting in segments so that the entire ALP is desilted after five years. A unique feature of the Maintenance Plan is the variable length of the segments designed to minimize LLNL's impact on CRLF movement. State and federal permits also added monitoring requirements and additional constraints on desilting activities. Two years into the Maintenance Plan, LLNL is examining the lessons learned on the cost-effectiveness of these maintenance measures and restrictions and reevaluating the direction of future maintenance activities.

Sanchez, L; Van Hattem, M; Mathews, S

2002-03-05

165

La Noche de las Brujas Module. Nivel Primario. [The Night of the Witches Module. Primary Level.  

ERIC Educational Resources Information Center

La Noche de las Brujas (Halloween) is the topic of this primary level unit. The objectives are to enable the child to: (1) draw scenery, using his imagination, about witches, castles, and devils; (2) write compositions on witches, devils, and Halloween; (3) explain the story "La Noche de las Brujas"; (4) tell about any adventures or incidents he…

Espinoza, Delia

166

Comunidades de partidarios en redes sociales: estudio de las elecciones catalanas de 2010 y 2012  

E-print Network

Comunidades de partidarios en redes sociales: estudio de las elecciones catalanas de 2010 y de reclutamiento de un movimiento social en redes sociales (Lotan, 2011; Grossman, 2009; Choudhary como fluye la información de los partidos/organizaciones en las redes sociales y la formación de

Moro, Esteban

167

Qu cientficos deben responder a las preguntas de la sociedad? ANTONIO HERNANDO  

E-print Network

. Sólo un experimento nuevo puede hacer tambalear el estado del arte. Ante estas consideraciones surge o el efecto de los campos electromagnéticos producidos por las líneas de alta tensión. Para no ser social' relativa al efecto que pudiera tener sobre la salud el campo electromagnético producido por las

Bilbao Arrese, Jesús Mario

168

Análisis financiero de la empresa de diseño e ingeniería. Las Tunas  

Microsoft Academic Search

La elevación de la eficiencia del trabajo en las empresas constituye el objetivo central de la política económica del Partido y el Estado, por cuanto la suma del trabajo de todas las empresas garantiza la eficiencia de la Economía Nacional. Al elevar la eficiencia de la producción se logran mejores resultados, con un mínimo de gastos la sociedad mejora la

Niulvis Barrero Maury; Marisol Ávila Gómez; Xiomara Batista Batista; Osmanys González Figueredo

2011-01-01

169

Las operadoras de cables submarinos y su papel en unas telecomunicaciones mundiales liberalizadas  

Microsoft Academic Search

Puede que esta revista y los que colaboramos en este informe especial dedicado a los cables submarinos hayamos esperado demasiado para explicar las características de un nicho o subsector de las telecomunicaciones, interesante y atractivo por muy diversos motivos, pero algo atribulado hoy por la fuerte ralentización en la que ha entrado el sector en su conjunto. Hasta hace unos

T. R. Murcia; Café Redacción; Portal Ingeniería

2005-01-01

170

Análisis de laudos arbitrales en Derecho de las Telecomunicaciones (incluye CD)  

Microsoft Academic Search

El Departamento de Derecho de las Telecomunicaciones de la Universidad Externado de Colombia, con el apoyo del Centro de Arbitraje y Conciliación de la Cámara de Comercio de Bogotá, ofrece con la presente publicación una aproximación a los principales laudos de telecomunicaciones entre los años 2000 y 2011, identificando los principales problemas jurídicos planteados y las tesis. Se trata de

Édgar González López; Luz Mónica Zapata

171

Problem-Solving in Las Vegas: Students Are Building Skills and a Global Network.  

ERIC Educational Resources Information Center

Describes a project initiated at Silverado High School in Las Vegas, where students from Las Vegas and schools across the United States monitor the levels of radon in the atmosphere. Enables students to learn first hand about the collection, analysis, and interpretation of scientific data and to network with other students from the United States…

Budd, Gregory; Curry, Don

1995-01-01

172

A Total Water Management Analysis of the Las Vegas Wash Watershed, Nevada  

EPA Science Inventory

Climate change, land use change, and population growth are fundamental factors affecting future hydrologic conditions in streams, especially in arid regions with scarce water resources. Located in the arid southwest, Las Vegas Valley located within the Las Vegas Wash watershed is...

173

Las TIC como fuente primaria de información estadística: El caso del comercio electrónico  

Microsoft Academic Search

Este trabajo es una exploración del impacto que tienen las Tecnologías de Información y Comunicaciones (TIC), especialmente Internet, no sólo como medio de transmisión de información, sino como fuente primaria de información estadística. A partir de ello, se propone la medición y análisis de estas tecnologías como herramienta útil en las actividades que por ley, desempeña el Departamento Administrativo Nacional

Carlos A. Barrera Cuesta

174

Pluralidad teórica, metodológica y técnica en el abordaje de las redes sociales: hacia la \\  

Microsoft Academic Search

Discutiendo sobre algunos trabajos que se presentan en el volumen noveno de la Revista Redes. Revista Hispana para el análisis de las redes sociales, este artículo incorpora un conjunto de reflexiones sobre el análisis de las redes sociales argumentando que esta específica área de análisis se encuentra en un cruce de caminos interdisciplinarios que vienen aportando recientemente ideas adicionales para

Estrella Gualda Caballero

2006-01-01

175

Impacto de las redes sociales de pacientes en la práctica asistencial  

Microsoft Academic Search

Las redes sociales de pacientes son espacios virtuales donde pacientes con condiciones similares se ponen en contacto y comparten tratamientos y problemas de salud. Estas redes ofrecen a las personas con problemas específicos de salud la oportunidad de compartir experiencias, buscar, recibir y proveer información, consejos e incluso apoyo emocional online. Pero, ¿cuál es el impacto de estas redes en

Elena Torrente; Joan Escarrabill; Tino Martí

2010-01-01

176

Las raíces teóricas del conflicto economía\\/ecología y algunos desarrollos posteriores a Walras  

Microsoft Academic Search

Las formas de relación del hombre con la naturaleza han cambiado a lo largo de la historia y las modificaciones en la configuración del sistema económico parecen reflejar claramente estas mutaciones. Así, durante el feudalismo el núcleo de lo económico se instala en la producción agraria y el dominio, mas no la propiedad sobre la tierra genera poder social. En

Luis Jair Gómez G

1997-01-01

177

REMOTE SENSING OF PERCHLORATE EFFECTS ON SALT CEDAR PRELIMINARY RESULTS FROM THE LAS VEGAS WASH  

EPA Science Inventory

Sodium Perchlorate and ammonium Perchlorate, major components of solid rocket fuel, have been manufactured in the Las Vegas Valley immediately up gradient from the Las Vegas Wash, since 1945 and 1956, respectively. Measurements of emerging ground water quality in the vici...

178

Politicas de las ONGs Europeas para America Latina: Tendencias y Perspectives Recientes  

Microsoft Academic Search

Introducción: Durante la década pasada han tenido lugar en América latina algunos cambios que han afectado gradualmente las prioridades y las políticas de ayuda de la comunidad internacional de donantes. El impacto de la globalización, la crisis de la ortodoxia neoliberal (véase la crisis del peso en Argentina) y la respuesta popular a la privatización y al aumento de la

C. H. Biekart

2005-01-01

179

Las tecnologías de información y comunicación un recurso estratégico para la educación superior  

Microsoft Academic Search

Resumen El propósito de este artículo es relacionar el aspecto gerencial como recurso estratégico en el uso de las tecnologías de información y comunicación (TIC's) aplicadas a la educación superior, en correspondencia con las conformidades y desavenencias encontradas en estudios anteriores sobre los cambios producidos por la utilización de estas herramientas en la sociedad actual. En este sentido, se analiza

Maldonado López; Luz María

180

Las TIC y el profesorado. Retos ante la multiformidad de mediaciones en los escenarios escolares  

Microsoft Academic Search

El presente trabajo permite precisar algunas ideas de los problemas relativos a la incorporación de las TIC en la educación, como apoyo al proceso de enseñanza – aprendizaje. El mismo propone un acercamiento a la enseñanza en los diferentes niveles educativos con el objetivo de lograr que los estudiantes alcancen las habilidades necesarias para el uso eficiente de los sistemas

Jorge Mesa Vázquez

2011-01-01

181

La Drosophila de las alas manchadas Una nueva plaga invasora en los frutales de Michigan  

E-print Network

La Drosophila de las alas manchadas Una nueva plaga invasora en los frutales de Michigan Rufus Bulletin E-3140SP New · November 2010 Introducción La mosca Drosophila de alas manchadas (Drosophila mayoría de las moscas del vinagre atacan cuando la fruta esta dañada. A diferencia de estas, la Drosophila

182

Manejo estratégico de la calidad ambiental en las cadenas agroalimentarias. Aplicaciones a la arveja china guatemalteca  

Microsoft Academic Search

Desde la perspectiva de las cadenas globales de mercancías, considerando la secuencia de actividades insumo-producto (principalmente producción primaria, procesamiento, comercialización y uso final), este artículo analiza las interacciones (horizontales) entre productores agrícolas como un juego del tipo dilema del prisionero. El resultado esperado es un equilibrio Nash en el cual los productores se quedan atados al uso de tecnologías no

Gerardo Jiménez Porras; Wim Pelupessy

2006-01-01

183

La Gaceta de la RSME, Vol. 00 (0000), Num. 0, Pags. 117 1 Las Medallas Fields  

E-print Network

de Leovigildo Alonso Tarr´io y Ana Jerem´ias L´opez Este a~no el premio Abel ha reca´ido sobre el miembro extranjero de la Academia Nacional de las Ciencias de U.S., de la Academia Americana de las Artes

Guijarro, Luis

184

INTERNET 2 : Las nuevas redes del futuro Juan Manuel Torres Moreno  

E-print Network

INTERNET 2 : Las nuevas redes del futuro Juan Manuel Torres Moreno Laboratorio Nacional de más virtual) pero aún mas impactante: la revolución de las redes de computadoras. Internet ha supuesto vistas. Internet constituye al mismo tiempo un mecanismo de difusión mundial, de propagación, interacción

Avignon et des Pays de Vaucluse, Université de

185

Un estudio de las Cajas de Ahorros Andaluzas mediante el método multicriterio promethee  

Microsoft Academic Search

En este trabajo se hace un análisis económico y financiero de las cajas de ahorros andaluzas. Se abordan, por medio de un conjunto de ratios, los diferentes aspectos (estructura patrimonial, estructura de costes, rentabilidad, productividad y solvencia) de las seis cajas que configuran el sistema andaluz de cajas de ahorros, agrupadas en la Confederación Andaluza de Cajas de Ahorros.El gran

D. GÓMEZ DOMÍNGUEZ; A. ZAPATA REINA

2002-01-01

186

Octubre de 201110 Festival de Poesa Las lenguas de Amrica Carlos Montemayor  

E-print Network

nacionalidades distintas represen- tando a once idiomas, siete de los cuales tienen su origen en el continente plano de igualdad a los idiomas originarios del continente con las cuatro principales lenguas de origen especiales de televisión y dos de radio, que se publican íntegros en las lenguas originales con sus res

Islas, León

187

La competencia entre las unidades capitalistas campesinas en la producción agraria  

Microsoft Academic Search

En este corto ensayo se parte del presupuesto de que los precios de producción expresan las condiciones de la reproducción capitalista y por lo tanto de la competencia. Obviamente la utilización de esta categoría para plantear la competencia entre las unidades capitalistas y campesinas en la producción agraria no deja de ser problemático, pues estamos confrontando dos racionalidades y dos

Guillermo Maya Muñoz

1991-01-01

188

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

Federal Register 2010, 2011, 2012, 2013, 2014

...4 p.m. The public may send written comments to the RAC at the above address. FOR FURTHER INFORMATION CONTACT: Rena Gutierrez, BLM Las Cruces District, 1800 Marquess Street, Las Cruces, NM 88005, 575-525-4338. Persons who use a...

2012-09-07

189

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

Federal Register 2010, 2011, 2012, 2013, 2014

...4 p.m. The public may send written comments to the RAC at the above address. FOR FURTHER INFORMATION CONTACT: Rena Gutierrez, BLM Las Cruces District, 1800 Marquess Street, Las Cruces, NM 88005, 575-525-4338. Persons who use a...

2012-03-28

190

La potenciación del origen en las estrategias de marketing de productos agroalimentarios Objetivos, situación e implicaciones  

Microsoft Academic Search

El presente trabajo analiza la creciente importancia que actualmente se concede a la potenciación de los aspectos relacionados con el origen geográfico en los procesos de fabricación y comercialización de productos agroalimentarios, a través del uso de las Denominaciones de Origen. Haciendo hincapié en los beneficios que estos indicadores geográficos ofrecen, y en la importancia que el compromiso de las

María Pilar Martínez Ruiz; Ana Isabel Jiménez Zarco

191

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

Federal Register 2010, 2011, 2012, 2013, 2014

...Volume 78, Number 9 (Monday, January...Proposed Modification of Class B Airspace; Las Vegas...turbine-powered aircraft within Class B airspace. DATES...phone number) between 9:00 a.m. and 5...Proposed Modification of Class B Airspace; Las...

2013-01-14

192

QUÉ MEDIMOS Y CÓMO MEDIMOS. LA EVALUACIÓN DE LAS SECUELAS NEUROCOGNITIVAS  

Microsoft Academic Search

Resumen Los supervivientes de tumores cerebrales y leucemia sufren défi cit persistentes en una am- plia gama de funciones neuropsicológicas: aten- ción, velocidad de procesamiento, memoria, capacidad visoespacial y funciones ejecutivas. El propósito de este artículo es proporcio- nar información acerca de los procedimientos de evaluación y las técnicas que se utilizan en la actualidad para la evaluación de las

Isabel Calonge

2009-01-01

193

Las ganancias del comercio y el intercambio desigual en los modelos del comercio internacional  

Microsoft Academic Search

Se examina el problema del intercambio desigual de trabajo entre países desarrollados y en desarrollo y su vinculación con las condiciones del comercio de beneficio mutuo. Para ello se utilizan los principales modelos teóricos del comercio internacional basado en las ventajas comparativas, y se amplía al caso de dos factores el concepto de relación de intercambio de trabajo derivada del

Francisco Martínez Soler; Andrei Martínez Finkelshtein

2005-01-01

194

Medellín: una evaluación del comportamiento de las finanzas públicas municipales, 2000-2006  

Microsoft Academic Search

Resumen: desde el año 2000, el comportamiento de las finanzas públicas de Medellín ha venido mostrando una tendencia positiva escalando en la posición del ranking realizado por el Departamento Nacional de Planeación (DNP), lo que le ha permitido localizarse en el primer lugar dentro de las ciudades capitales del país en 2005 y 2006. El objetivo de este trabajo es

Jenifer González H; Amalia Rodríguez V

2009-01-01

195

JANET RUTH WHITE University of Nevada -Las Vegas School of Architecture  

E-print Network

JANET RUTH WHITE University of Nevada - Las Vegas School of Architecture Las Vegas, NV 89154-4018 janet.white@unlv.edu (702) 895 - 4431 EDUCATION Cornell University School of Architecture, Art and Planning Ph.D., May 2001, History of Architecture and Urbanism Dissertation title: "The Intersection

Ahmad, Sajjad

196

Logística Inversa: una herramienta de apoyo a la competitividad de las organizaciones  

Microsoft Academic Search

El desarrollo de la logística en la empresa durante las últimas décadas ha sido significativo debido a la posibilidad de lograr ventajas competitivas a través de ella. Hoy día existe la posibilidad de recuperar y aprovechar económicamente aquellos productos que dejan de satisfacer las necesidades del consumidor; esto genera un flujo de materiales y productos hacia el productor denominada Logística

Laila Cure Vellojín; Juan Carlos Meza González; René Amaya Mier

2006-01-01

197

Mejoramiento de la gestión logística de las empresas afi liadas a Acoplásticos: diagnóstico y recomendaciones  

Microsoft Academic Search

El artículo presenta los resultados, diagnóstico, conclusiones y recomendaciones correspondientes a la investigación sobre las principales actividades logísticas de las empresas afi liadas a Acoplásticos, con énfasis en el sector de empaques y envases. Se realizó un estudio durante cerca de 10 meses, aprobado por la Asociación Colombiana de Industrias Plásticas (Acoplásticos) y con el apoyo fi nanciero de la

Fabio Novoa Rojas; Pilar Sepúlveda Calderón

2008-01-01

198

Los centros de documentacin europea son bibliotecas depositarias de las publicaciones de la Unin Europea: reciben  

E-print Network

: repositorio institucional que contiene tesis doctorales leídas en la Universidad Revistas electrónicas a texto la Unión Europea: reciben regularmente fondos documentales publicados por las instituciones de la información y documentación sobre las instituciones europeas para facilitar el conocimiento y la investigación

Autonoma de Madrid, Universidad

199

Salt Mineralogy of Las Vegas Wash, Nevada: Morphology and Subsurface Evaporation  

Microsoft Academic Search

Las Vegas Wash drains the Las Vegas Basin in Nevada by capturing a series of tributaries and ending in Lake Mead and is being developed into an urban wetland. The soils are part of the Land series and con- tain high concentrations of pedogenic salts because of local sulfate-rich parent materials and high evapotranspiration rates. These salts cause damage to

Brenda J. Buck; Katherine Wolff; Douglas J. Merkler; Nancy J. McMillan

2006-01-01

200

LAS homolog distribution shift during wastewater treatment and composting ecological implications  

Microsoft Academic Search

The behavior of LAS (linear alkylbenzene sulfonate) in different environmental compartments was studied through wastewater treatment process steps in sewage treatment plants of Alicante and Benidorm (activated sludge type) as well as in Guardamar (lagoons). The fate of LAS, using a specific HPLC method, was monitored during treatment sludge compostage and soil amendment operations. Finally, the marine sediments close to

D. Prats; F. Ruiz; B. Vazquez; D. Zarzo; J. L. Berna; A. Moreno

1993-01-01

201

The La 2S 3-LaS 2 system: Thermodynamic and kinetic study  

NASA Astrophysics Data System (ADS)

A detailed thermodynamic study of the LaS 2-La 2S 3 system in the temperature range 350-1000 °C was performed, starting from high quality crystals LaS 2 as the highest polysulfide in the system, and using a sensitive static tensimetric method with a quartz Bourdon gauge and a membrane as a null-point instrument. The pS- T- x diagram obtained has shown that the phase region covering the composition between LaS 2 and La 2S 3, which was previously described as a single grossly nonstoichiometric phase, consists of three discrete stoichiometric phases, LaS 2.00, LaS 1.91, and LaS 1.76, where compositions could be determined with an accuracy of ±0.01 f.u. The thermodynamic characteristics of evaporation of the polysulfides as well as standard heat of LaS 2 formation were calculated. The role of kinetics in the formation of ordered superstructures of sulfur-poorer polysulfides with different formal concentration of vacancies is considered.

Vasilyeva, I. G.; Nikolaev, R. E.

2010-08-01

202

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

Federal Register 2010, 2011, 2012, 2013, 2014

...John Gough, Manager, Airspace and Procedures, and Bill Ruggiero, Support Manager Las Vegas, TRACON, 699 Wright Brothers...John Gough, Manager, Airspace and Procedures, and Bill Ruggiero, Support Manager Las Vegas, TRACON, 699 Wright...

2011-06-24

203

La Importancia De Las Ayudas Informáticas Para Los Análisis Ergonómicos En El Diseño Industrial. Caso: la implementación de la silla sit-stand para las cajeras de supermercado en el estado de Quebec - Canadá  

Microsoft Academic Search

El diseño industrial está estrechamente relacionado con las necesidades de los diferentes utilizadores (clientes) y con el desarrollo de nuevos productos; en este proceso para llegar a los resultados esperados, el diseñador debe establecer las soluciones que deben satisfacer las necesidades encontradas. Para llegar a los objetivos, el producto debe ser pasado por diversas validaciones y verificaciones. Los análisis ergonómicos

Alvaro Enrique Diaz

204

LAS ENTIDADES FINANCIERAS DE ECONOMÍA SOCIAL ANTE LA CRISIS FINANCIERA: UN ANÁLISIS DE LAS CAJAS RURALES \\/ THE SOCIAL FINANCIAL INSTITUTIONS IN A FRAME OF CRISIS: AN ANALYISIS OF SPANISH RURAL COOPERATIVE BANKS  

Microsoft Academic Search

Las cajas rurales, en su condición de entidades de crédito, al igual que los bancos y las cajas de ahorros, están experimentando las consecuencias derivadas de la actual crisis financiera internacional. Sin embargo, lejos de suponer un lastre para estas entidades, la actual situación ha de ser aprovechada como una oportunidad, lo que significa redefinir su modelo de negocio apostando

Ricardo PALOMO ZURDO; Joan Ramón SANCHIS PALACIO; Francisco SOLER TORMO

205

Investigaccion-accion en la sala de clases sobre las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios y su relacion reciproca con el aprendizaje de las ciencias biologicas  

Microsoft Academic Search

La investigacion---accion que se llevo a cabo en la sala de clases tenia como punto de partida las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios para luego examinar sus implicaciones en el proceso de aprendizaje de las Ciencias Biologicas. ¿Que se supone que hagan las creencias en relacion con el aprendizaje? ¿En que consiste

Lizzette Astrid Cordova-Santiago

2004-01-01

206

Roles of Pseudomonas aeruginosa las and rhl Quorum-Sensing Systems in Control of Elastase and Rhamnolipid Biosynthesis Genes  

Microsoft Academic Search

putative interaction between PAI-2 and RhlR, we demonstrated that (3H)PAI-2 binds to E. coli cells expressing RhlR and not to those expressing LasR. Finally, the specificity of the las and rhl systems was examined in E. coli bioassays. The las system was capable of mildly activating rhlA, and similarly, the rhl system partly activated lasB. However, these effects were much

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

1997-01-01

207

Pottery engineering in ancient Guerrero, Mexico : the site of Las Fundiciones  

E-print Network

This thesis examines ancient pottery from the site of Las Fundiciones, Guerrero, Mexico. Because this site provides the only documented evidence of prehispanic metal smelting in Mesoamerica it is critical to examine artifacts ...

Reitzel, Hannah Lynn

2007-01-01

208

Double star images taken by HST WFPC and Las Campanas Observatory  

NASA Technical Reports Server (NTRS)

Comparison of the same area of sky (a double star) taken by the Hubble Space Telescope (HST) wide field planetary camera (WFPC) and ground-based image taken from the Las Campanas Observatory, Carnegie Institute of Washington.

1990-01-01

209

Diario Financiero Conferencias y Formacin San Crescente 81, piso 5 Las Condes Metro El Golf Santiago  

E-print Network

Auspician: Diario Financiero Conferencias y Formación San Crescente 81, piso 5 · Las Condes · Metro Diario Financiero. $220.000 Público general. Pases corporativos por inscripciones de más de 5 asistentes

Rudnick, Hugh

210

DENTAL CLINIC PROPERTIES FOR SALE OFFERED BY THE UNIVERSITY OF NEVADA, LAS VEGAS  

E-print Network

DENTAL CLINIC PROPERTIES FOR SALE OFFERED BY THE UNIVERSITY OF NEVADA, LAS VEGAS PROPERTY ADDRESSES;818 East Sahara Avenue 864 East Sahara Avenue #12;UNLV School of Dental Medicine Faculty Practice Dental

Hemmers, Oliver

211

Como Mantienen la Competividad las Multinacionales de Economias Emergentes? El Case de CEMEX  

E-print Network

La creciente presencia de multinacionales de países emergentes (EMNEs) entre las empresas más importantes del mundo hace necesario entender cuáles son los factores que determinan la sostenibilidad de sus ventajas competitivas ...

Lucea, Rafael

212

Emisiones en el interior de las viviendas por la combustión de carbón en los hogares  

Cancer.gov

Quemar carbón dentro de las viviendas para calefacción o preparación de alimentos produce emisiones de partículas y gases que pueden contener una cantidad de sustancias químicas dañinas, como benceno, monóxido de carbono, formaldehído e hidrocarburo aromático policíclico.

213

ANÁLISIS DE LAS COMUNIDADES CIENTÍFICAS Y ACADÉMICAS DE LAS CIENCIAS BÁSICAS MÉDICAS Y DE LA SALUD PÚBLICA EN COLOMBIA ¿UNA DIFERENCIA?  

Microsoft Academic Search

El objetivo de este trabajo es caracterizar la dinámica de los recursos humanos en investigación y su producción científica al interior de las comunidades de salud pública y ciencias básicas biomédicas del país. El enfoque de este estudio articula la evaluación del comportamiento de los recursos humanos y el tránsito hacia comunidades científicas, vistos desde la teoría del capital conocimiento

Hernán Jaramillo Salazar; Carolina Lopera Oquendo

2008-01-01

214

Agier, Michel y Odile Hoffmann, 1999, Las tierras de las comunidades negras en el Pacfico colombiano: interpretaciones de la ley, estrategias de los actores. Territorios, Revista de estudios  

E-print Network

cuyos efectos directos es el de suscitar nuevas dinámicas sociales e incluso provocar el surgimiento de a los recursos, a los servicios, al juego político nacional y a las redes globales y supranacionales, sean económicas, sociales o políticas. El debate suscitado por la ley 70 es portador de nuevos esquemas

Paris-Sud XI, Université de

215

“Como pella a las dueñas, tomelo quien podiere”: anacronismo y representación en las adaptaciones cinemáticas del Libro de buen amor dirigidas por Tomás Aznar y Jaime Bayarri  

E-print Network

por un camino que serpentea hacia el fondo de la pintura. El pintor flamenco del siglo quince Memling también empleó esta técnica, aunque en una composición mucho más compleja y apasionante, en su Pasión de Cristo, en que distribuye todas las...

Drayson, E. A.

2015-01-01

216

Da 17/01/2014 -11.49h Identifican las sustancias qumicas que las reinas de especies como hormigas, abejas y  

E-print Network

como las abejas, avispas, abejorros y algunas hormigas utilizan la La reina del sexo: por qué solo una puede reproducirse - ABC.es http://www.abc.es/ciencia/20140117/abci-reina-sexo-solo-puede-201... 1 of 3 dificultades que encontró Darwin", La reina del sexo: por qu

Wenseleers, Tom

217

Diseño y análisis de escenarios a partir de la caracterización de las cadenas productivas mediante modelos de redes  

Microsoft Academic Search

La caracterización de las cadenas productivas aplicando el concepto de simulación mediante redes dinámicas, conlleva una descripción mucho más detallada de cada uno de los actores que intervienen en las cadenas, además de esbozar las relaciones entre los mismos a partir de variables de tipo cuantitativas, resultado de la esquematización de sus recursos compartidos. Este artículo es el derivado del

Juan Carlos Vergara Schmalbach; Julio Amézquita López; Francisco Javier Maza Ávila

2009-01-01

218

PROPUESTA METODOLÓGICA PARA LA PROGRAMACIÓN DE LA PRODUCCIÓN EN LAS PYMES DEL SECTOR ARTES GRÁFICAS, ÁREA PUBLI-COMERCIAL  

Microsoft Academic Search

La problemática de la programación de la producción en ambientes tipo taller (Job Shop) ha sido abordada por diferentes autores, desarrollando diversas alternativas de solución, de las cuales, muy pocas han podido ser implementadas por las pymes del sector artes gráfi cas debido a la alta complejidad de las propuestas, a los fuertes supuestos que se plantean y a la

JUAN PABLO OREJUELA CABRERA; JULIETH JULIANA OCAMPO CARRILLO; CAMILO ANDRÉS MICÁN RINCÓN

2010-01-01

219

Estrategia curricular infotecnológica para el uso de las redes sociales en la formación del profesional de la educación  

Microsoft Academic Search

Las Universidades de Ciencias Pedagógicas, tienen como encargo social la formación integral de los profesionales de la educación, en los contextos actuales con la gran diversidad de información cada vez más voluminosa y móvil, se precisa de un proceso formativo direccionado hacia la gestión del conocimiento mediante el empleo de las Tecnologías de la Información y las Comunicaciones (TIC). La

Rosa Lidia Martínez Cabrales; Miriam Roll Hechavarría

2011-01-01

220

PROPUESTA DE TRATAMIENTO CONTABLE PARA LAS AFECTACIONES AMBIENTALES PROVOCADAS POR LA EXPLOTACIÓN DE YACIMIENTOS MINERALES EN EMPRESAS PRODUCTORAS DE NÍQUEL  

Microsoft Academic Search

El medio ambiente es un recurso importante para las empresas y su gestión ha de ser eficiente en beneficio tanto de la entidad como de la sociedad. La necesidad de contabilizar los costos y las obligaciones ambientales de las cuestiones asociadas con la contabilidad ambiental ha cobrado cada vez más importancia, ya se trate de empresas privadas, de organizaciones sin

Clara Luz Reynaldo Argüelles

2011-01-01

221

Language Assessment Scales, Level 2, LAS II, for Grades 6 and Up, English/Spanish. Examiner's Manual.  

ERIC Educational Resources Information Center

Language Assessment Scales, Level 2 (LAS II) are used to assess the linguistic proficiency of limited-English-speaking or non-English-speaking adolescents. LAS II, like its predecessor, LAS I, provides a picture of oral linguistic proficiency based on a student's performance across four linguistic subsystems: phonemic, lexical, syntactic and…

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

222

78 FR 32644 - Las Vegas Wash Hydro LLC; Notice of Preliminary Permit Application Accepted for Filing and...  

Federal Register 2010, 2011, 2012, 2013, 2014

...Project No. 14468-000] Las Vegas Wash Hydro LLC; Notice of Preliminary Permit...Applications On November 16, 2012, Las Vegas Wash Hydro LLC, filed an application for a...study the feasibility of the Las Vegas Wash Hydroelectric Project (project) to...

2013-05-31

223

¿Es la coyuntura económica un resultado de las expectativas empresariales? Análisis de la EOIC 1990-2008  

Microsoft Academic Search

Resumen: Con la formulación de la teoría de las expectativas racionales, el análisis de las predicciones de los agentes económicos ha cobrado un papel muy importante en el desarrollo de la mayoría de teorías económicas. En este trabajo se estiman algunos tests de “No Causalidad” de Granger, Sims y Toda, y de Yamamoto, para determinar si las expectativas empresariales causan

Sebastián Gómez Cardona; Alberto Jaramillo

2009-01-01

224

V Festival Nacional del Nuevo Teatro: Las fuentes inagotables del arte  

E-print Network

Medellín: con mayor o menor intensidad los tres polos de desarrollo teatral más importantes de Colombia. Por supuesto, conjuntos teatrales de amplia trayectoria en el oficio han impulsado recientemente esta modalidad que sólo ahora en este festival se... siendo) un teatro comprometido con las luchas de las masas desprotegidas de Colombia y, para el efecto, se esmeraba por enfocar esta palpitante realidad mediante una escenografía sobria que enmarcaba imágenes sin mucho atractivo visual. Quizás bajo el...

Má rceles Daconte, Eduardo

1982-10-01

225

Depuración de las aguas residuales procedentes de la tintura con transportadores  

Microsoft Academic Search

En este trabajo, se describe la técnica de extracción-cromatografía de gases utilizada para la valoración cuantitativa de los carriers (transportadores de tintura) en las aguas residuales.\\u000aA continuación se determinan las cinéticas de biodegradación de seis transportadores de tintura. Utilizando dos de estos carriers se han preparado unos efluentes sintéticos, estudiándose su depuración en una planta piloto de fangos activados

Martí Crespi Rosell; José Cegarra Sánchez

1970-01-01

226

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

E-print Network

LA NATURALEZA CONTRADICTORIA DE LAS PEL?CULAS HECHAS EN M?XICO SOBRE LA REVOLUCI?N MEXICANA A Thesis by ALEX STEVE GARZA Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF ARTS August 2010 Major Subject: Modern Languages LA NATURALEZA CONTRADICTORIA DE LAS PEL?CULAS HECHAS EN M?XICO SOBRE LA REVOLUCI?N MEXICANA A Thesis by ALEX STEVE GARZA Submitted...

Garza, Alex Steve

2010-10-12

227

ANEXO 9.3. Anlisis MIR de las 9 UR operadoras. UR Operadoras  

E-print Network

ANEXO 9.3. Análisis MIR de las 9 UR operadoras. UR Operadoras 1 A2M FIN PROP�SITO COMPONENTES A CADA MIR DE LOS OPERADORES DEL Pp K009 - Esta alineado al objetivo 14 del PND 2013 - 2018. - Sin entre los operadores del K009. #12;ANEXO 9.3. Análisis MIR de las 9 UR operadoras. 2 A3Q FIN PROP�SITO

228

La UA se convierte en el primer campus cardioprotegido de Espaa Con la inauguracin de las torres desfibriladoras en el Da Europeo para la Prevencin del Riesgo  

E-print Network

, "una alteración que sólo se puede revertir si se tiene cerca un desfibrilador y los conocimientos el uso de los desfibriladores las 24 horas del día. Hábitos saludables Desde las 10:00 a las 18 horas

Escolano, Francisco

229

Preliminary Results From SILVVER '03 - Seismic Investigations of the Las Vegas Valley: Evaluating Risk  

NASA Astrophysics Data System (ADS)

In August 2003, the University of Nevada Las Vegas (UNLV) with the assistance of the several other institutions acquired seismic refraction data and broadband data across the Las Vegas basin, NV. The SILVVER '03 (Seismic Investigations of the Las Vegas Valley: Evaluating Risk) project is in part a continuing effort to characterize the Las Vegas basin for strong ground motion. The objectives of this phase of the Las Vegas Valley Seismic Response (LVVSR) project were to acquire 3-D seismic data across the basin to define the geometry and structure in the sub-surface; to identify sub-basins, which can focus energy in the basin; and test the current basin model, which shows that the northeastern portion of the basin is as deep as 5 km of unconsolidated basin fill and has increased amplification. The experiment consisted of two seismic refraction profiles of about 55 km in length each. One profile extended from the northeast, across the Las Vegas Valley Shear Zone and the transition from the deep to shallow portions of the basin to the southwest. The second profile extended from the southeast from Frenchman Mountain to the northwest towards the Nevada Test Site along a corridor that is thought to focus energy into the Las Vegas Valley. Station spacing along the profile was nominally 100 to 200 m and shot point spacing was on the order of 10 km. There were 8 shots that were successfully recorded ranging in size from 50 to 1000 lb. The overall quality of the data is very high, especially since the majority of the instruments were deployed in the urban area. Initial results show that the basin can be characterized by an average velocity of 4 km/s while the transition into the crust indicates there is a dramatic velocity increase to 6 km/s at the basin/bedrock contact. The data from this experiment will be used to produce a 3-D tomographic velocity model of the Las Vegas basin. In addition to the seismic refraction profiles, we set out 6 broadband stations across the Valley in an effort to record the chemical blasts. These instruments are currently deployed and recording continuously. Only the larger shots were captured by the broadband array. These data will be used to further our understanding of the Las Vegas basin and the potential seismic hazards that the region faces. In addition, these newly acquired datasets will be integrated into a 3-D community model that is being developed by the working group that will identify areas in the Valley where there could be an increase of amplification due to strong ground motion.

Snelson, C. M.; Sandru, J.; McEwan, D. J.; Hirsch, A.; Zaragoza, S. A.; Draa, A.; Hanson, A. D.; Kaip, G.; Harder, S. H.; Azevedo, S.; McKibben, W.; Rodgers, A.; Lewis, J. P.; Smith, D.; Rock, D.; McCallen, D.

2003-12-01

230

Identification of methyl triclosan and halogenated analogues in male common carp (Cyprinus carpio) from Las Vegas Bay and semipermeable membrane devices from Las Vegas Wash, Nevada  

USGS Publications Warehouse

Methyl triclosan and four halogenated analogues have been identified in extracts of individual whole-body male carp (Cyprinus carpio) tissue that were collected from Las Vegas Bay, Nevada, and Semipermeable Membrane Devices (SPMD) that were deployed in Las Vegas Wash, Nevada. Methyl triclosan is believed to be the microbially methylated product of the antibacterial agent triclosan (2, 4, 4'-trichloro-4-hydroxydiphenyl ether, Chemical Abstract Service Registry Number 3380-34-5, Irgasan DP300). The presence of methyl triclosan and four halogenated analogues was confirmed in SPMD extracts by comparing low- and high-resolution mass spectral data and Kovats retention indices of methyl triclosan with commercially obtained triclosan that was derivatized to the methyl ether with ethereal diazomethane. The four halogenated analogues of methyl triclosan detected in both whole-body tissue and SPMD extracts were tentatively identified by high resolution mass spectrometry. Methyl triclosan was detected in all 29 male common carp from Las Vegas Bay with a mean concentration of 596????g kg- 1 wet weight (ww) which is more than an order of magnitude higher than previously reported concentrations in the literature. The halogenated analogs were detected less frequently (21%-76%) and at much lower concentrations (< 51????g kg- 1 ww). None of these compounds were detected in common carp from a Lake Mead reference site in Overton Arm, Nevada.

Leiker, T.J.; Abney, S.R.; Goodbred, S.L.; Rosen, M.R.

2009-01-01

231

Identification of methyl triclosan and halogenated analogues in male common carp (Cyprinus carpio) from Las Vegas Bay and semipermeable membrane devices from Las Vegas Wash, Nevada.  

PubMed

Methyl triclosan and four halogenated analogues have been identified in extracts of individual whole-body male carp (Cyprinus carpio) tissue that were collected from Las Vegas Bay, Nevada, and Semipermeable Membrane Devices (SPMD) that were deployed in Las Vegas Wash, Nevada. Methyl triclosan is believed to be the microbially methylated product of the antibacterial agent triclosan (2, 4, 4'-trichloro-4-hydroxydiphenyl ether, Chemical Abstract Service Registry Number 3380-34-5, Irgasan DP300). The presence of methyl triclosan and four halogenated analogues was confirmed in SPMD extracts by comparing low- and high-resolution mass spectral data and Kovats retention indices of methyl triclosan with commercially obtained triclosan that was derivatized to the methyl ether with ethereal diazomethane. The four halogenated analogues of methyl triclosan detected in both whole-body tissue and SPMD extracts were tentatively identified by high resolution mass spectrometry. Methyl triclosan was detected in all 29 male common carp from Las Vegas Bay with a mean concentration of 596 microg kg(-1) wet weight (ww) which is more than an order of magnitude higher than previously reported concentrations in the literature. The halogenated analogs were detected less frequently (21%-76%) and at much lower concentrations (<51 microg kg(-1) ww). None of these compounds were detected in common carp from a Lake Mead reference site in Overton Arm, Nevada. PMID:19054547

Leiker, Thomas J; Abney, Sonja R; Goodbred, Steven L; Rosen, Michael R

2009-03-01

232

Una dulce bondad que atempera las crueldades: El campo de Griselda Gambaro  

E-print Network

SUMMER 1980 95 Una dulce bondad que atempera las crueldades: El campo de Griselda Gámbaro EVELYN PICON GARFIELD "The opposite of cruelty is freedom." El teatro de Griselda Gámbaro (Argentina, 1928) ha sido calificado de absurdo y cruel1 por... cuando la nombra "(como si soñara) Una dulce bondad que atempera las crueldades. . . " (p. 71). Ase gura que Franco la cuida "como a la niña de sus ojos" (p. 70). "Es mi guardián" (p.37). De los resultados del "dulce daño" que ejerce Franco, la...

Picó n Garfield, Evelyn

1980-07-01

233

After 58 years, an icon on the Las Vegas Strip closes  

NSDL National Science Digital Library

Las Vegas' Sahara Hotel and Casino closing after more than 58 yearshttp://news.blogs.cnn.com/2011/05/16/las-vegas-sahara-hotel-and-casino-closing-after-more-than-58-years/?hpt=C2Las Vegas Historyhttp://www.lasvegassun.com/history/Southern Nevada: The Boomtown Yearshttp://digital.library.unlv.edu/boomtown/Vegas Tripping: Implosionshttp://www.vegastripping.com/implosions/The Neon Museumhttp://neonmuseum.org/All that glitters is not gold, and when it comes to the glittering lights of the Vegas Strip, nothing is permanent. This weekend, the Sahara hotel saw its last guests leave as it ended its 58-year run on the Strip. The hotel was the brainchild of one Milton Prell, a former jewelry salesman who ran a bingo parlor in Montana. In 1952, he opened the Sahara, which he envisioned as a "jewel of the desert". The Sahara was the sixth hotel on the Strip, and with its fantastical Congo Room supper club and Casbar Lounge, it was a flourishing part of the "ring-a-ding-ding" 1950s and 1960s scene in Las Vegas. Characters who were part of the Strip's history included legendary entertainers Ray Bolger, Donald O'Connor, and Louis Prime, who performed there for years with his wife, Keely Smith. While plans for the site are in flux, it is hoped that some of the Sahara's iconic neon signs will end up in the nearby Neon Museum.The first link will take visitors to a nice article from this Saturday's Las Vegas Sun about the closing of the Sahara. The second link leads to piece from CNN's blog which also talks about the recent closing of this famed Strip stalwart. The third link will whisk users away to a terrific site from the Las Vegas Sun which chronicles the highs and lows of the Strip's history. Moving on, the fourth link leads to a nice digital collection from the University of Nevada, Las Vegas which documents the boom years of Southern Nevada through images, documents, and other archival items. The fifth link leads to a rather raucous and fun archive of Strip hotel implosions captured for posterity. Finally, the last link leads to the homepage of The Neon Museum in Las Vegas, which celebrates neon culture in all of its glory.

Grinnell, Max

2011-05-20

234

Bioconcentration of the anionic surfactant linear alkylbenzene sulfonate (LAS) in the marine shrimp Palaemonetes varians: a radiotracer study.  

PubMed

Uptake and depuration kinetics of dissolved [(14)C]C??-6-linear alkylbenzene sulfonate (LAS) were determined in the shrimp Palaemonetes varians using environmentally relevant exposure concentration. The shrimp concentrated LAS from seawater with a mean BCF value of 120 L kg(-1) after a 7-day exposure. Uptake biokinetics were best described by a saturation model, with an estimated BCFss, of 159 ± 34 L kg(-1), reached after 11.5 days. Shrimp weight influenced significantly BCF value with smaller individuals presenting higher affinity to LAS. To the light of a whole body autoradiography, major accumulation of LAS occurred in the cephalothorax circulatory system (gills, heart, hepatopancreas) and ocular peduncle, but not in the flesh, limiting potential transfer to human consumers. LAS depuration rate constant value of the shrimp was 1.18 ± 0.08 d(-1) leading to less than 1% of remaining LAS in its tissues after 8 days of depuration. PMID:25016418

Renaud, Florent; Warnau, Michel; Oberhänsli, François; Teyssié, Jean-Louis; Temara, Ali; Rouleau, Claude; Metian, Marc

2014-08-15

235

Estudio sobre las dosis de radiación y los riesgos de cáncer causados por la prueba atómica “Trinity” realizada en 1945  

Cancer.gov

El NCI tiene planeado realizar entrevistas en profundidad para determinar cuál era la alimentación característica de las poblaciones indígenas americanas, hispanas (latinas) y chicanas que vivían en New Mexico a mediados de 1940 y utilizar información fácilmente disponible sobre la alimentación y el estilo de vida de las poblaciones blancas. Estas entrevistas representan un paso importante para hacer estimaciones de las dosis de radiación generadas por la prueba Trinity.

236

14 de enero, martes, a las 20:00 h. La Concejala de Turismo como impulsora de "Orihuela  

E-print Network

#12;14 de enero, martes, a las 20:00 h. La Concejalía de Turismo como impulsora de "Orihuela enero, martes, a las 20:00 h. De patrimonio cultural a oferta cultural para Orihuela destino turístico D. Raúl Pérez Casado Director Hotel Meliá Palacio de Tudemir (Orihuela) 28 de enero, martes, a las 20:00 h

Escolano, Francisco

237

Visita cinco museos que formen parte de la Institucin Smithsonian para celebrar los 100 aos de las Girl Scouts.  

E-print Network

las Girl Scouts. Juliette Gordon Low de Edward Hughes, 1887 u Galería Nacional del Retrato, Americanos del Siglo XX: 1900-1930, 3er piso -- Juliette Gordon Low fundó las Girl Scouts en 1912 y creía en la. ¿Qué valores de las Girl Scouts pusiste en práctica? ¿Sabías qué...? Anna Maria Chávez es la líder de

Mathis, Wayne N.

238

De la mujer social a la mujer azul: la reconstrucción de la feminidad por las derechas españolas durante el primer tercio del siglo XX  

Microsoft Academic Search

Durante las décadas finales del siglo XIX y las primeras del XX, el acercamiento de las mujeres españolas hacia el espacio público y el ámbito de la política fue teorizado por los grupos derechistas y católicos, que se vieron impulsados por la necesidad de integrar en sus movimientos políticos nuevos sectores sociales, como las mujeres. El modelo de feminidad y

Rebeca Arce Pinedo

2005-01-01

239

XML como tecnología de componentes distribuidos: usos y posibilidades de las tecnologías estándares de Internet para el desarrollo de componentes software  

Microsoft Academic Search

Las modernas tecnologías de componentes distribuidos (COM\\/COM+, CCM, JavaBeans) conforman universos de interoperabilidad separados que requieren de puentes especializados para comunicarse, reduciendo así las posibilidades de reutilización, siendo éste, paradójicamente, el que debería ser objetivo fundamental de las mismas. Una posible alternativa a las \\

Eduardo González; Joyanes Luciano; Santiago Juárez; Miguel Ángel; Sicilia Urbán

240

Cloning and characterization of the Pseudomonas aeruginosa lasR gene, a transcriptional activator of elastase expression.  

PubMed Central

We report the discovery of the lasR gene, which positively regulates elastase expression in Pseudomonas aeruginosa PAO1. The lasR gene was cloned by its ability to restore a positive elastase phenotype in strain PA103, a strain which possesses the elastase structural gene (lasB) but fails to synthesize the enzyme. Nucleotide sequence analysis revealed an open reading frame of 716 nucleotides encoding a protein of approximately 27 kDa. A labeled LasR protein of 27 kDa was detected in Escherichia coli by using a T7 RNA polymerase expression system. A chromosomal deletion mutant of the lasR gene was constructed in PAO1 by gene replacement. This mutant (PAO-R1) is devoid of elastolytic activity and elastase antigen. The deduced amino acid sequence of LasR is 27% homologous to the positive activator LuxR of Vibrio fischeri and the suspected activator 28K-UvrC of E. coli. Northern (RNA) analysis of total cellular RNA from PAO1, PAO-R1, and PAO-R1 containing the lasR gene on a multicopy plasmid (pMG1.7) revealed that a functional lasR gene is required for transcription of the elastase structural gene (lasB). Images PMID:1902216

Gambello, M J; Iglewski, B H

1991-01-01

241

PENERBAHE 4 A1 20/04/12 a las 14:00h PENERBAHE  

E-print Network

/05/12 a las 15:45h SEMIFINALS FUTBOL - SALA 24-abr-12 15:45 PACHANGUITA UTD UE TATINHO PA 24-abr-12 16:30 TECNOCAMPUS DRINK TEAM PB FINALS FUTBOL - SALA 25-may-12 16:00 GANADOR PA GANADOR PB 25-may-12 16:00 PERDEDOR

242

Changes in the morphometry of Las Vegas Wash and the impact on water quality  

USGS Publications Warehouse

Las Vegas Wash, a natural wash east of Las Vegas, Nevada, carries stormwater, groundwater drainage, and sewage effluent from two sewage treatment plants to Lake Mean. Over 80 percent of the normal discharge of approximately 3.4 m3/s (120 ft3/s) consists of effluent from the City of Las Vegas and Clark County sewage treatment plants. Beginning in the 1950s, a large wetland area developed along the wash that supported waterfowl populations and contributed to some water quality transformations. Heavy rains and subsequent flooding in the area in 1983 and 1984 resulted in erosion and channelization that greatly reduced the wetland area within Las Vegas Wash. The reduction in wetland area shortened water travel time in the wash and affected water quality. The primary impacts on the water entering Lake Mead have been an increase in temperature, a decrease in dissolved oxygen concentration, and an increase in ammonia levels. Other physical-chemical parameters and changes in nutrient transformations are also discussed.

Roline, Richard A.; Sartoris, James J.

1988-01-01

243

LAND AND WATER USE EFFECTS ON GROUND-WATER QUALITY IN LAS VEGAS VALLEY  

EPA Science Inventory

The hydrogeologic study of the shallow ground-water zone in Las Vegas Valley, Nevada determined the sources and extent of ground-water contamination to develop management alternatives and minimize adverse effects. An extensive, computerized data base utilizing water analyses, wel...

244

Orion Launch Abort System (LAS) Propulsion on Pad Abort 1 (PA-1)  

NASA Technical Reports Server (NTRS)

This presentation provides a concise overview of the highly successful Orion Pad Abort 1 (PA-1) flight test, and the three rocket motors that contributed to this success. The primary purpose of the Orion PA-1 flight was to help certify the Orion Launch Abort System (LAS), which can be utilized in the unlikely event of an emergency on the launchpad or during mission vehicle ascent. The PA-1 test was the first fully integrated flight test of the Orion LAS, one of the primary systems within the Orion Multi-Purpose Crew Vehicle (MPCV). The Orion MPCV is part of the architecture within the Space Launch System (SLS), which is being designed to transport astronauts beyond low-Earth orbit for future exploration missions. Had the Orion PA-1 flight abort occurred during launch preparations for a real human spaceflight mission, the PA-1 LAS would have saved the lives of the crew. The PA-1 flight test was largely successful due to the three solid rocket motors of the LAS: the Attitude Control Motor (ACM); the Jettison Motor (JM); and the Abort Motor (AM). All three rocket motors successfully performed their required functions during the Orion PA-1 flight test, flown on May 6, 2010 at the White Sands Missile Range in New Mexico, culminating in a successful demonstration of an abort capability from the launchpad.

Jones, Daniel S.

2015-01-01

245

PROCEEDINGS: SYMPOSIUM ON FLUE GAS DESULFURIZATION HELD AT LAS VEGAS, NEVADA, MARCH 1979; VOLUME I  

EPA Science Inventory

The publication, in two volumes, contains the text of all papers presented at EPA's fifth flue gas desulfurization (FGD) symposium, March 5-8, 1979, at Las Vegas, Nevada. A partial listing of titles includes the following: Overview of control technology--the bridge between energy...

246

CAPABILITIES OF THE ENVIRONMENTAL MONITORING AND SUPPORT LABORATORY-LAS VEGAS  

EPA Science Inventory

This report describes the present and developing capabilities of the U.S. Environmental Protection Agency's Environmental Monitoring and Support Laboratory in Las Vegas, Nevada. Its purpose is to present comprehensive information in concise form to enable users of the Laboratory'...

247

Trayectorias tecnológicas de las máquinas térmicas e industrial del motor en España  

Microsoft Academic Search

En este trabajo se pretende analizar los diversos paradigmas y trayectorias tecnológicas relacionados con las máquinas térmicas a lo largo del siglo XIX y primeras décadas del XX para reflexionar sobre la dinámica evolutiva y lógica interna del propio proceso de innovación en el sector, sobre la participación española en el mismo y sobre el impacto específico de los avances

J. Patricio Saiz; R. Rubén Amengual

2005-01-01

248

NORMATIVA GENERAL DE EXTENSIN PARA LAS INSTITUCIONES DE EDUCACIN UNIVERSITARIA NAEx (2013)  

E-print Network

ordinaria realizada el 12 de Julio de 2013 en la sede de la Universidad Central de Venezuela (UCV), sobre la Instituciones de Educación Universitaria del Consejo Nacional de Universidades (NAEx-CNU), aprobada en su sesión Académicos en el año 2003 EXPOSICIÓN DE MOTIVOS El Núcleo de Autoridades de Extensión de las Universidades

Vásquez, Carlos

2013-01-01

249

Validation of Las Vegas Basin Response to the 1992 Little Skull Mtn. Earthquake as Predicted by  

E-print Network

1 Validation of Las Vegas Basin Response to the 1992 Little Skull Mtn. Earthquake Valley (LVV), we modeled the ML 5.6 -5.8 Little Skull Mountain (LSM) earthquake. The NSZ process employs Little Skull Mountain (LSM) earthquake. We selected the LSM event because at ML 5.6 -5

250

Evolución de la Estructura de Mercado de las Telecomunicaciones en España  

Microsoft Academic Search

El sector de las telecomunicaciones ha experimentado un importante cambio estructural durante los últimos cuatro años, tanto en los aspectos regulatorios como de mercado. La razón, sin duda, está en el cambio tecnológico y de mentalidad que ha permitido la liberalización y globalización de los mercados. En este artículo se da una visión panorámica de los aspectos regulatorios a lo

Álvaro Escribano; Antonio G. Zaballos

2002-01-01

251

22 de enero, mircoles, a las 20:00 h. El paisaje como recurso territorial  

E-print Network

agrícolas de la Huerta del Bajo Segura: la empresa "Hortofrutícola 3 Puentes" D. Francisco J. Belmonte Martínez Gerente de "Hortofrutícola 3 Puentes" (Dolores) 12 de marzo, miércoles, a las 20:00 h. La

Escolano, Francisco

252

University of Nevada Las Vegas Student Wellness Center Agreement for Services  

E-print Network

University of Nevada Las Vegas Student Wellness Center Agreement for Services Student Health Center not cover the cost of all services provided at the Student Wellness Center. I further understand that I am of services · The Student Wellness Center will automatically place my university account on registration hold

Hemmers, Oliver

253

PROCEEDINGS: SYMPOSIUM ON FLUE GAS DESULFURIZATION HELD AT LAS VEGAS, NEVADA, MARCH 1979; VOLUME II  

EPA Science Inventory

The publication, in two volumes, contains the text of all papers presented at EPA's fifth flue gas desulfurization (FGD) symposium, March 5-8, 1979, at Las Vegas, Nevada. A partial listing of papers in Volume 2 includes the following: Basin Electric's involvement with dry flue ga...

254

DISYUNTIVAS EN LAS CONCEPCIONES SOBRE AUTONOMÍA Y BENEFICENCIA QUE AFECTAN LA TERAPÉUTICA DEL INTENTO SUICIDA.  

PubMed

El objetivo del trabajo es conocer las disyuntivas entre los principios de beneficencia y autonomía, que se presentan en la relación médico-paciente, durante la terapéutica del intento de suicidio.La investigación se realizó en dos hospitales psiquiátricos de la Ciudad de México. La muestra incluyó a tres sujetos con intento de suicidio, mayores de 18 años, que eran atendidos en consulta externa a causa de una lesión autoinfligida en el último año, y a tres psiquiatras que trataban a estos pacientes. La información se obtuvo previo consentimiento informado en entrevistas individuales. Se llevó a cabo un análisis de discurso argumentado para encontrar los significados que los participantes otorgaron a los principios bioéticos y las posibles disyuntivas entre éstos.Las discordancias entre la beneficencia y la autonomía estuvieron relacionadas con el beneficio del tratamiento, el respeto por los valores y las creencias de los pacientes, entre otros. Este trabajo presenta consideraciones éticas relevantes en el escenario clínico, al ofrecer al psiquiatra un análisis bioético que le permita actuar de acuerdo con la beneficencia y respetando la autonomía del paciente frente a casos de intento de suicidio y, de esta forma procurar una mejor atención para ellos. PMID:20830214

Mondragón, Liliana; Monroy, Zuraya; Ito, Ma Emily; Medina-Mora, Dra Ma Elena

2010-06-01

255

Content Analysis Schedule for Bilingual Education Programs: Las Cruces Elementary School Bilingual Project.  

ERIC Educational Resources Information Center

This content analysis schedule for the Elementary School Bilingual Project of Las Cruces, New Mexico, presents information on the history, funding, and scope of the project. Included are sociolinguistic process variables such as the native and dominant languages of students and their interaction. Information is provided on staff selection and the…

La Noue, Joan

256

¿Es posible un estándar abierto tipo XML para las bases de datos de Patología?  

Microsoft Academic Search

RESUMEN XML es un nuevo estándar de almacenamiento semiestructurado en el que, a diferencia del HTML, se pueden definir etiquetas o marcas personales por medio de una DTD (las Definiciones de Tipo de Documento o Restricciones de Domino) o mediante el uso de Schema. En los últimos años ha proliferado su uso como formato eficaz de almacenamiento e intercambio de

Ernesto Moro-Rodríguez; Jesús Coma del Corral; Miguel Sánchez-Ramos

257

A Fast Las Vegas Algorithm for Computing the Smith Normal Form of a Polynomial Matrix  

E-print Network

A Fast Las Vegas Algorithm for Computing the Smith Normal Form of a Polynomial Matrix Department algorithm is presented that nds the Smith normal form S 2 Q x]n n of a nonsingular input matrix A 2 ZZ x]n n sense. 1 Introduction The Smith normal form is a diagonalization of a matrix over a principal ideal

Waterloo, University of

258

A Fast Las Vegas Algorithm for Computing the Smith Normal Form of a Polynomial Matrix  

E-print Network

A Fast Las Vegas Algorithm for Computing the Smith Normal Form of a Polynomial Matrix Arne that finds the Smith normal form S Q[x]n×n of a nonsingular input matrix A ZZ [x]n×n . The algorithm and practical sense. 1. INTRODUCTION The Smith normal form is a diagonalization of a matrix over a principal

Labahn, George

259

PERCHLORATE UPTAKE BY SALT CEDAR (TAMARIX RAMOSISSIMA) IN THE LAS VEGAS WASH RIPARIAN ECOSYSTEM  

EPA Science Inventory

Perchlorate ion (CIO4-) has been identified in samples of dormant salt cedar (Tamarix ramosissima) growing in the Las vegas Wash. Perchlorate is an oxidenat, but its reduction is kineticaly hindered. CXoncern over thyrpoid effects caused the Environmental Protection Agency (EPA...

260

LAS RUINAS CAVE, CERRO RABON, OAXACA, MEXICO: A MAZATEC POSTCLASSIC FUNERARY AND RITUAL SITE  

Microsoft Academic Search

Some 48 different caves and rock shelters were surveyed in a karstic region of the state of Oaxaca, Mexico. A brief discussion of the morphological variation encountered and methods of underground archaeological survey is presented. The cave of Las Ruinas has been chosen for detailed examination in this paper. This cave best illustrates a typology for the considerable number and

ROMAN HAPKA; FABIENNE ROUVINEZ

261

Nuevos Procesos Sociales y Polticos en Amrica Latina: Las redes neozapatistas  

E-print Network

Nuevos Procesos Sociales y Políticos en América Latina: Las redes neozapatistas Xochitl Leyva Solano xleyva@mac.com Leyva Solano, Xochitl. 2008. "Nuevos procesos sociales y políticos en América, Democracia Radical y Movimientos Sociales. Lima, Programa Democracia y Transformación Globa, pp

Geffner, Hector

262

LA CONSTRUCCIN DE UN ESPACIO VIRTUAL IBEROAMERICANO: LAS REDES EN INTERNET  

E-print Network

; Redes sociales; Nuevas tecnologías #12;1. Espacio iberoamericano y nuevas tecnologías, ¿oportunidad oLA CONSTRUCCIÓN DE UN ESPACIO VIRTUAL IBEROAMERICANO: LAS REDES EN INTERNET Luis RODRÍGUEZ YUNTA redes iberoamericanas, formales e informales, en Internet: contenidos, recursos para la cooperación y

Boyer, Edmond

263

Innovación conducida por la utilidad (ICU). Reflexiones desde las ciencias de la vida  

Microsoft Academic Search

El abordaje interdisciplinar de los problemas es hoy esencial para desarrollar la nueva ciencia. Ese es el caso de las grandes convergencias de tecnologías que caracterizarán al Siglo XXI, como la conocida NBIC(Nano, Bio, Info y Cognos) o la GRIN (Genómica, robótica, infonomía y nanotecnología). Estamos rediseñando artificialmente sistemas tremendamente complejos mediante la manipulación de los principios elementales encontrados, que

Julio Lorca

2011-01-01

264

ESTUDIO SOBRE LA INSERCIÓN DE LA GESTIÓN AMBIENTAL EN LAS POLÍTICAS SECTORIALES CASO COLOMBIA  

Microsoft Academic Search

Este estudio presenta una revisión de la regulación ambiental en Colombia y de sus resultados, concentrándose en el análisis del desempeño ambiental de la industria manufacturera y del sector energético. La evaluación detallada del rol que ha jugado la regulación ambiental permite las siguientes conclusiones: (1) Colombia enfrenta el reto de hacer la regulación ambiental más flexible, dando espacio a

Marcela Meléndez; Eduardo Uribe

2003-01-01

265

La contaminación de las aguas subterráneas. : una responsabilidad moral, política y ambiental  

Microsoft Academic Search

RESUMEN.- La utilización de aguas subterráneas para abastecimiento urbano y riego está aumentando en todo el mundo. Así está aumentando el interés por los recursos subterráneos de agua y por su protección de la contaminación. Sin embargo es corriente que los estudios sobre la contaminación de los acuíferos y su protección sean inadecuados o no existan en absoluto. Las agencias

Andrés Sahuquillo Herráiz

266

Geophysical constraints on the location and geometry of the Las Vegas Valley Shear Zone, Nevada  

NASA Astrophysics Data System (ADS)

We model the basin configuration beneath Las Vegas Valley, Nevada, on the basis of gravity, drillhole, and seismic reflection data. We locate and characterize the various strands of the Las Vegas Valley Shear Zone (LVVSZ) by variations in basin thickness beneath the valley. The pre-Tertiary bedrock surface is complex, with subbasins buried beneath the flat alluvial surface of the valley. We suggest that these basins are formed from transtensional strain. Subbasins elongated N70°W and N50°W are interpreted as strike-slip basins. The deepest subbasin is 5 km west of Frenchman Mountain and strikes N40°E. This basin probably formed by combined movement on nonparallel strands of the LVVSZ and an earlier episode of normal faulting. The basin thickness map constrains the minimum depth of the inferred detachment fault beneath Las Vegas Valley to at least 4 km. Seismic reflection data do not image a detachment fault in the upper 10 km beneath Las Vegas Valley. Our results also illustrate the utility of gravity in determining basinal structures and providing a three-dimensional perspective in areas with limited seismic reflection control.

Langenheim, V. E.; Grow, J. A.; Jachens, R. C.; Dixon, G. L.; Miller, J. J.

2001-04-01

267

La modulacin tonal en las formas musicales del Flamenco: propiedades de preferencia e hibridacin armnica  

E-print Network

1 La modulación tonal en las formas musicales del Flamenco: propiedades de preferencia e formas o estilos del cante flamenco y se analiza su ejecución desde un punto de vista etnomusical describe a musical fenomena, the tonal modulation, that often appears in the styles (palos) of flamenco

Díaz-Báñez, José Miguel

268

Sobre Como Varian las Firmas Manuscritas con el Tiempo: una Modelizacion Sigma Lognormal  

E-print Network

tecnolog´ia emergente, se debe dedicar esfuerzo a este tema. El t´ermino ageing se usa generalmente para las funciones de presi´on dadas por la mayor´ia de los dispositivos de adquisici´on on-line actuales

Autonoma de Madrid, Universidad

269

El crecimiento económico y la supervivencia”: el caso de las matemáticas y la economía  

Microsoft Academic Search

El tema de la “matematización” de la economía se trata en el marco de la relación entre la cultura y la tecnología y el tema del avance de las técnicas del análisis económico se enmarca en el principio de Adam Smith de la división del trabajo en la industria de la ciencia. Por medio de un argumento verbal se muestran

Javier Gómez Pineda

2008-01-01

270

Algunas consideraciones sobre la introducción de las tecnologías de la información en la educación  

Microsoft Academic Search

El auge que ha tenido la introducción de las Tecnologías de la Información y la Comunicación (TIC) en la sociedad actual, exige la búsqueda de nuevas alternativas para lograr un óptimo aprovechamiento de estos medios en la solución de problemas docentes educativos. Con el objetivo de elevar la calidad y la eficiencia del proceso de enseñanza-aprendizaje, se instrumentan desde hace

Noelio Vázquez Vargas

2011-01-01

271

DISYUNTIVAS EN LAS CONCEPCIONES SOBRE AUTONOMÍA Y BENEFICENCIA QUE AFECTAN LA TERAPÉUTICA DEL INTENTO SUICIDA1  

PubMed Central

El objetivo del trabajo es conocer las disyuntivas entre los principios de beneficencia y autonomía, que se presentan en la relación médico-paciente, durante la terapéutica del intento de suicidio. La investigación se realizó en dos hospitales psiquiátricos de la Ciudad de México. La muestra incluyó a tres sujetos con intento de suicidio, mayores de 18 años, que eran atendidos en consulta externa a causa de una lesión autoinfligida en el último año, y a tres psiquiatras que trataban a estos pacientes. La información se obtuvo previo consentimiento informado en entrevistas individuales. Se llevó a cabo un análisis de discurso argumentado para encontrar los significados que los participantes otorgaron a los principios bioéticos y las posibles disyuntivas entre éstos. Las discordancias entre la beneficencia y la autonomía estuvieron relacionadas con el beneficio del tratamiento, el respeto por los valores y las creencias de los pacientes, entre otros. Este trabajo presenta consideraciones éticas relevantes en el escenario clínico, al ofrecer al psiquiatra un análisis bioético que le permita actuar de acuerdo con la beneficencia y respetando la autonomía del paciente frente a casos de intento de suicidio y, de esta forma procurar una mejor atención para ellos. PMID:20830214

Mondragón, Liliana; Monroy, Zuraya; Ito, Ma. Emily; Medina-Mora, Dra. Ma. Elena

2010-01-01

272

Métodos y procesos multicriterio para la evaluación social de las políticas públicas  

Microsoft Academic Search

Cualquier problema de decisión social se caracteriza por conflictos entre valores e intereses que compiten y diferentes grupos y comunidades que los representan. Por ejemplo, en la gestión ambiental, las metas de biodiversidad, los objetivos del paisaje, los servicios directos de diferentes entornos como fuentes de recursos y como sumideros de desechos, los significados históricos y culturales que los lugares

Giuseppe Munda

2004-01-01

273

Metodos y Procesos Multicriterio para la Evaluación Económico-Ambiental de las Políticas Públicas  

Microsoft Academic Search

Resumen: Cualquier problema de decisión social se caracteriza por conflictos entre valores e intereses que compiten y diferentes grupos y comunidades que los representan. Por ejemplo, en la gestión ambiental, las metas de biodiversidad, los objetivos del paisaje, los servicios directos de diferentes entornos como fuentes de recursos y como sumideros de desechos, los significados históricos y culturales que los

Giuseppe Munda; Edifici B

274

Métodos y Procesos Multicriterio para la Evaluación Social de las Políticas Públicas  

Microsoft Academic Search

Cualquier problema de decisión social se caracteriza por conflictos entre valores e intereses que compiten y diferentes grupos y comunidades que los representan. Por ejemplo, en la gestión ambiental, las metas de biodiversidad, los objetivos del paisaje, los servicios directos de diferentes entornos como fuentes de recursos y como sumideros de desechos, los significados históricos y culturales que los lugares

Giuseppe Munda

2006-01-01

275

Vegetation of Grassy Remnants in the Las Vegas Valley, Southern Nevada  

Microsoft Academic Search

The approximately 1000-km2 Las Vegas Valley contains a rich assemblage of unique plant communities in the eastern Mojave Desert. Yet, there is little published documentation of this vegetation as its destruction continues with proceeding urban development. Development has intensified after the 1998 Southern Nevada Public Land Management Act mandated the disposal of federal lands. We document plant communities at four

Jill E. Craig; Scott R. Abella

276

by the City of Las Vegas that caused the cessation of flow from artesian springs at  

E-print Network

of Las Vegas Creek (see URS, 1977). 3. Life History Features. Because Vegas Valley leopard frogs have. Breeding. Reproduction was aquatic. i. Breeding migrations. Unlikely. Vegas Valley leopard frogs probably little other aquatic habitat was avail- able. Early investigators suggested that Vegas Valley leopard

Richter, Stephen C.

277

Congreso Internacional 1810-2010: 200 aos de Iberoamrica -2737 LAS MUJERES CON DISCAPACIDAD  

E-print Network

categorías como por ejemplo, la raza, etnia, orientación sexual, origen nacional o el estrato socioeconómico en nuestra televisión como en la radio, como en las calles, estas personas parten de un grupo «menos

Paris-Sud XI, Université de

278

Signal and Image Processing, SIP-2000, Las Vegas, USA, (c) IASTED SEARCHING FOR AURORA  

E-print Network

Signal and Image Processing, SIP-2000, Las Vegas, USA, (c) IASTED SEARCHING FOR AURORA MIKKO T. We demonstrate an automatical algorithm for searching aurora in auroral all-sky images. The algorithm that contain aurora and require further examination in the detection phase. The detection is based on shape

Syrjäsuo, Mikko

279

Comenditic and pantelleritic ash-flow tuffs from Volcan Las Navajas, Nayarit, Mexico  

Microsoft Academic Search

Two distinctive ash-flow tuffs occur around the base of Volcan Las Navajas, a Pleistocene trachyte - peralkaline rhyolite center located in the northwestern segment of the Mexican Volcanic belt. The lower ash-flow unit is locally up to 65 m thick, is lithic rich and contains pumice blocks of comenditic rhyolite. The unit is not extensively exposed, and thus its areal

S. A. Nelson; J. A. Hebre

1985-01-01

280

The Development of Child Subjectivity in "La lengua de las mariposas"  

ERIC Educational Resources Information Center

Jose Luis Cuerda's film "La lengua de las mariposas" is set in rural Galicia in the immediate lead-up to the outbreak of the Spanish Civil War. It portrays the tender relationship between a Republican schoolteacher, Don Gregorio, and a boy named Moncho. Upon the Nationalist capture of the town, the young Moncho hurls stones at his friend, but…

Ryan, Lorraine

2012-01-01

281

Geophysical constraints on the location and geometry of the Las Vegas Shear Zone, Nevada  

USGS Publications Warehouse

We model the basin configuration beneath Las Vegas Valley, Nevada, on the basis of gravity, drillhole, and seismic reflection data. We locate and characterize the various strands of the Las Vegas Valley Shear Zone (LVVSZ) by variations in basin thickness beneath the valley. The pre-Tertiary bedrock surface is complex, with subbasins buried beneath the flat alluvial surface of the valley. We suggest that these basins are formed from transtensional strain. Subbasins elongated N70??W and N50??W are interpreted as strike-slip basins. The deepest subbasin is 5 km west of Frenchman Mountain and strikes N40??E. This basin probably formed by combined movement on nonparallel strands of the LVVZ and an earlier episode of normal faulting. The basin thickness map constrains the minimum depth of the inferred detachment fault beneath Las Vegas Valley to at least 4 km. Seismic reflection data do not image a detachment fault in the upper 10 km beneath Las Vegas Valley. Our results also illustrate the utility of gravity in determining basinal structures and providing a three-dimensional perspective in areas with limited seismic reflection control.

Langenheim, V.E.; Grow, J.A.; Jachens, R.C.; Dixon, G.L.; Miller, J.J.

2001-01-01

282

Trees Killed by the 2011 Las Conchas Fire in New Mexico  

USGS Multimedia Gallery

Extensive, contiguous mortality of piñon pine, ponderosa pine, and Douglas-fir trees, killed in the first afternoon and evening of the 2011 Las Conchas Fire in the Jemez Mountains, New Mexico. Forest drought stress is highly correlated with mortality from poor growth, bark beetle outbreaks, a...

283

Los daños provocados por la prevención y por las actividades preventivas  

Microsoft Academic Search

La prevención es parte de la respuesta sanitaria a los problema de salud. La prevención tiene una historia y un presente honorables, que justifican un aura positiva de beneficio sin riesgos. Sin embargo, la prevención y las actividades preventivas se han vuelto peligrosas para la salud individual y colectiva por cuatro factores clave: la búsqueda de la salud perfecta y

Juan Gérvas; Mercedes Pérez Fernández

2009-01-01

284

Distribution of linear alkylbenzenes (LABs) and linear alkylbenzenesulphonates (LAS) in Tokyo Bay sediments  

NASA Astrophysics Data System (ADS)

Two types of land-derived pollutants, Linear alkylbenzenes (LABs) and linear alkylbenzenesulphonates (LAS), were measured in sediments from Tokyo Bay and the adjacent estuaries. LABs are widely distributed in the estuaries and the northern part of the bay, with relatively constant concentrations of ˜ 1 ?g per g-dry sediments. In this area, ?LAB contents showed no offshore decrease, indicating that LABs are not intensively trapped at the estuaries and can be transported great distances. The isomeric compositions of LABs indicate that the degree of LAB degradation in Tokyo Bay sediments is c. 50%. A zone with relative high LAB contents (> 2 ?g g -1) is present c. 5 km off the mouths of the Tamagawa and Sumidagawa Rivers. LAS contents in the sediments rapidly decrease from > 10 ?g g -1 in the upper estuaries to < 1 ?g g -1 in the lower estuaries. Furthermore, in Tokyo Bay sediments, LAS contents decreased offshore and fell below 0·01 ?g g -1 10 km off the mouths of the rivers. These results indicate the rapid degradation of LAS in the coastal zone.

Takada, Hideshige; Ishiwatari, Ryoshi; Ogura, Norio

1992-08-01

285

Incorporation of biofilm activity in river biodegradation modeling: a case study for linear alkylbenzene sulphonate (LAS)  

Microsoft Academic Search

A mathematical model was constructed which considers both biofilm and suspended biomass activity in relation to the biodegradation of individual chemicals in rivers. To calibrate this model for the surfactant LAS (linear alkylbenzene sulphonate), experimental data were obtained in a lab-scale artificial river system, which allowed to collect accurate and reproducible river biodegradation data next to the required river characteristics.

Geert M. Boeije; Diederik R. Schowanek; Peter A. Vanrolleghem

2000-01-01

286

Nutrición deportiva en la infancia: Cumplimiento de las demandas metabólicas del crecimiento y el ejercicio  

Microsoft Academic Search

ExtractoLos objetivos fundamentales de la infancia son el crecimiento y la maduración óptimos. Estos procesos relacionados con el desarrollo exigen un balance energético y nitrogenado positivo. Aunque la actividad física regular puede intensificar el desarrollo en la infancia, un entrenamiento físico extenuante puede reducir las reservas de energía y nitrógeno del organismo que, entonces, deberán reemplazarse a través de la

C. L. Zanker

2006-01-01

287

CONVOCATORIA DE ARTCULOS CONFERENCIA DE LAS NACIONES UNIDAS SOBRE COMERCIO Y DESARROLLO  

E-print Network

CONVOCATORIA DE ARTÍCULOS CONFERENCIA DE LAS NACIONES UNIDAS SOBRE COMERCIO Y DESARROLLO Y. El grupo está compuesto por expertos en Derecho y Economía de renombre internacional, inversores discusión internacional y que será sometido a los gobiernos para observaciones adicionales, la UNCTAD y la

Autonoma de Madrid, Universidad

288

UNIVERSITYOF NEVADA, LAS VEGAS DIFFERENTIAL FEE PROPOSAL FOR UNLV'S SCHOOL OF NURSING  

E-print Network

to ensure that the program continues year round so that they can complete it in 16 months, rather than 2UNIVERSITYOF NEVADA, LAS VEGAS DIFFERENTIAL FEE PROPOSAL FOR UNLV'S SCHOOL OF NURSING Responseth year) students would be adversely affected by an increase in tuition. Nursing students recognize

Hemmers, Oliver

289

El Estado y las Haciendas Territoriales frente a los retos de la estabilidad presupuestaria  

Microsoft Academic Search

RESUMEN La creación de la Unión Económica y Monetaria ha traído consigo la necesidad de mayores grados de disciplina y coordinación presupuestarias. España ha seguido estrictamente el mandato a favor de la disciplina y la coordinación. En 2001 el Parlamento aprobó una Ley de Estabilidad Presupuestaria. Esta ley tiene notables consecuencias para las finanzas públicas estatales y regionales. El presente

José Manuel González Páramo

2003-01-01

290

El VIH y las ramificaciones para la seguridad alimentaria y la salud infantil en comunidades afectadas  

Microsoft Academic Search

ExtractoLos primeros casos de síndrome de inmunodeficiencia adquirida (SIDA), causada por el virus de la inmunodeficiencia humana (VIH), se identificaron en 1981. Actualmente se estima en 39 millones las personas infectadas en todo el mundo por el virus. Aunque el 64% de estos individuos viven actualmente en la pobreza de África subsahariana, la pandemia se está propagando en estos momentos

Noel W. Solomons; Gwen Ellen O’Donnell

2007-01-01

291

Determinantes del crecimiento de las emisiones de gases de efecto invernadero en España (1990-2007)  

Microsoft Academic Search

La evolución de los gases de efecto invernadero en España se está distanciando notablemente del objetivo marcado por el Protocolo de Kyoto. En el presente trabajo se analizan los diferentes factores que han contribuido al importante aumento experimentado en las emisiones de gases de efecto invernadero provenientes del consumo de energía en España en el período 1990-2007. La metodología de

Vicent Alcantara Escolano; Emilio Padilla Rosa

2009-01-01

292

Las energías renovables: Perspectivas e impacto sobre el empleo en Asturias  

Microsoft Academic Search

RESUMEN El sector energético está experimentando transformaciones sustanciales como consecuencia del desarrollo de las energías renovables, cuyo impulso no sólo aporta beneficios ambientales, sino que también reduce la dependencia energética y contribuye a la creación de empleo. En este trabajo realizamos un análisis prospectivo del empleo en el sector energético en Asturias hasta el año 2010, estudiando el impacto que

Blanca Moreno Cuartas; Ana Jesús López Menéndez

2008-01-01

293

Más para ellas - Sugerencias para cerrar la brecha entre géneros en las regiones en desarrollo  

Microsoft Academic Search

Según el pensamiento convencional, la salud y la educación son factores esenciales para el desarrollo económico y social: permiten mejorar la distribución del ingreso y la productividad, y además, los más beneficiados son los pobres. Sin embargo, en muchas regiones del mundo no todos los miembros de la sociedad reciben estos servicios equitativamente. En muchos casos las mujeres están excluidas

Alessandro Magnoli

2005-01-01

294

Factores determinantes de la estrategia de diversificación relacionada: una aplicación a las empresas industriales españolas  

Microsoft Academic Search

El objetivo de este artículo es analizar los factores determinantes de la estrategia de diversificación relacionada. Para ello, se ha realizado una revisión de la literatura especializada descubriendo que son dos las teorías que con mayor potencial justifican dicha estrategia: la Economía Industrial y la Teoría de Recursos y Capacidades. A partir de estas teorías se diseña el modelo teórico

José Emilio Navas López; Patricia Huerta Riveros

2005-01-01

295

University of Nevada, Las Vegas Policy on Laboratory Animal Care and Use  

E-print Network

, sensitive and respectful environment during all animal experimentation, studies and use. 6. ParticipateUniversity of Nevada, Las Vegas Policy on Laboratory Animal Care and Use This policy provides guidance for the humane use and treatment of animals used in research, teaching and testing

Hemmers, Oliver

296

Conozca cuáles son las opciones de atención del cáncer en su comunidad  

Cancer.gov

Este artículo hace una presentación general de las funciones del programa de centros oncológicos designados por el NCI y del programa de investigación oncológica comunitaria del NCI en Estados Unidos, los cuales son una fuente importante de atención para pacientes con cáncer.

297

Earthquakes in the Classroom, Las Vegas, NV: The Nevada Educational Seismic Network (NESN)  

Microsoft Academic Search

Geophysics is a term guaranteed to strike fear into the heart of the bravest high school science student. Using math to describe the earth can involve complex equations that can only be deciphered by enigmatic computer programs. But high school science students in the Las Vegas Valley have been given a unique opportunity to gather important research information while learning

J. Hopkins; C. M. Snelson; S. A. Zaragoza; K. Smith; D. Depolo

2002-01-01

298

LAS VEGAS VALLEY WATER BUDGET: RELATIONSHIP OF DISTRIBUTION, CONSUMPTIVE USE, AND RECHARGE TO SHALLOW GROUND WATER  

EPA Science Inventory

Estimates of quantity and geographic distribution of recharge to the shallow ground-water zone from water use return flows in Las Vegas Valley were made for the years 1973, 1965, 1958, 1950, and 1943 as part of a broader study on the impact of water and land use on ground-water q...

299

Isolation of the Autoinducer-Quenching Strain that Inhibits LasR in Pseudomonas aeruginosa  

PubMed Central

Quorum sensing (QS) has been recognized as a general phenomenon in microorganisms and plays an important role in many pathogenic bacteria. In this report, we used the Agrobacterium tumefaciens biosensor strain NT1 to rapidly screen for autoinducer-quenching inhibitors from bacteria. After initial screening 5389 isolates obtained from land and beach soil, 53 putative positive strains were identified. A confirmatory bioassay was carried out after concentrating the putative positive culture supernatant, and 22 strains were confirmed to have anti-LasR activity. Finally, we determined the strain JM2, which could completely inhibit biofilm formation of Pseudomonas aeruginosa PAO1, belonged to the genus Pseudomonas by analysis of 16S rDNA. Partially purified inhibitor factor(s) F5 derived from culture supernatants specifically inhibited LasR-controlled elastase and protease in wild type P. aeruginosa PAO1 by 68% and 73%, respectively, without significantly affecting growth; the rhl-controlled pyocyanin and rhamnolipids were inhibited by 54% and 52% in the presence of 100 ?g/mL of F5. The swarming motility and biofilm of PAO1 were also inhibited by F5. Real time RT-PCR on samples from 100 ?g/mL F5-treated P. aeruginosa showed downregulation of autoinducer synthase (LasRI and rhlI) and cognate receptor (lasR and rhlR) genes by 50%, 28%, 48%, and 29%, respectively. These results provide compelling evidence that the F5 inhibitor(s) interferes with the las system and significantly inhibits biofilm formation. PMID:24736783

Weng, Lixing; Zhang, Yuqian; Yang, Yuxiang; Wang, Lianhui

2014-01-01

300

Probabilistic risk assessment for linear alkylbenzene sulfonate (LAS) in sewage sludge used on agricultural soil.  

PubMed

Deterministic and probabilistic risk assessments were developed for commercial LAS in agricultural soil amended with sewage sludge. The procedure done according to ILSI Europe's Conceptual Framework [Schowanek, D., Carr, R., David, H., Douben, P., Hall, J., Kirchmann, H., Patria, L., Sequi, P., Smith, S., Webb, S.F., 2004. A risk-based methodology for deriving quality standards for organic contaminants in sewage sludge for use in agriculture-conceptual Framework. Regul. Toxicol. Pharmacol. 40 (3), 227-251], consists of three main steps. First, the most sensitive endpoint was determined. This was found to be the chronic ecotoxicity of LAS to soil invertebrates and plants. Additional endpoints, such as potential for plant uptake and transfer in the food chain, leaching to groundwater, surface erosion run-off, human health risk via drinking water, plant consumption and soil ingestion were also systematically evaluated but were all assessed to be of little toxicological significance. In the second step, a back-calculation was conducted from the Predicted No-Effect Concentration in soil (PNECsoil) to a safe level of LAS in sludge (here called 'Sludge Quality Standard'; SQS). The deterministic approach followed the default agricultural soil exposure scenario in the EU-Technical Guidance Document (TGD). The SQS for LAS was calculated as 49 g/kg sludge Dry Matter (DM). In order to assess the potential variability as a result of varying agricultural practices and local environmental conditions, two probabilistic exposure assessment scenarios were also developed. The mean SQS was estimated at 55 and 27.5 g/kg DM for the homogeneous soil mixing and soil injection scenarios, respectively. In the final step, the resulting SQS values were evaluated for consistency and relevance versus available information from agricultural experience and field tests. No build-up, adverse impact on soil fertility, agronomic performance, or animal/human health have been reported for agricultural fields which have received sludge with high LAS levels for up to 30 years. Distribution statistics of LAS concentrations in anaerobically digested sewage sludge measured across Europe were created (mean value: 5.56 g LAS/kg sludge DM). When compared to the above mean SQS values, adequate risk characterisation ratios of 0.08-0.2 were found. The 'ecological risk' parameter calculated for anaerobic sludge from the probabilistic approaches was below 3%. A regulatory Limit Value for LAS of 2.60 g/kg sludge DM was originally proposed in the 3rd Draft of the Working Document on Sludge [CEC, 2000b. Working Document on Sludge. Third Draft, Brussels 27 April 2000, DG. Environment, 18 p.]. The current assessment, based on an updated dataset and a refined assessment procedure, suggests that the need for a limit value for LAS in sewage sludge cannot be substantiated on a risk basis. PMID:17967498

Schowanek, Diederik; David, Helen; Francaviglia, Rosa; Hall, Jeremy; Kirchmann, Holger; Krogh, Paul Henning; Schraepen, Nathalie; Smith, Stephen; Wildemann, Tanja

2007-12-01

301

Development of Small-Scale Vegetable and Fruit Producers for an Expanding Urban Market in Las Vegas, Nevada  

Microsoft Academic Search

Southern Nevada, located along the eastern edge of the Mojave Desert, contains the rapidly growing city of Las Vegas, home to nearly two million people and attracting 40 million visitors each year. Las Vegas has one of the largest food service industries in North America and has emerged as a restaurant destination for tourists due to the growth in quantity

R. L. Morris; H. Gatzke; K. R. Curtis

302

¿Qué traen las personas al juego? Experimentos de campo sobre la cooperación en los recursos de uso común  

Microsoft Academic Search

El estudio de la acción colectiva requiere la comprensión de los incentivos individuales y de las restricciones institucionales que guían a las personas en la decisión de cooperar o no, en el grupo que enfrenta este dilema. El uso de ecosistemas locales por parte de grupos de individuos es sólo un ejemplo en el que la extracción individual incrementa el

Cárdenas Juan Camilo; Elinor Ostrom

2004-01-01

303

Futuro de las telecomunicaciones en México ¿Cuál debe ser el rol del gobierno ante los nuevos escenarios del mercado?  

Microsoft Academic Search

El objetivo del presente artículo es analizar las decisiones de política pública que está llevando a cabo el gobierno de México para impulsar la competencia en el mercado de telecomunicaciones. Para ello, se identifica la forma en la que está organizado este sector y se utilizan herramientas provenientes de la teoría económica de redes para evaluar las acciones de este

Fernando G. Toriz Flores

2010-01-01

304

Semana nacional de preparacin para clima severo 2 al 8 de marzo de Manual para las redes sociales  

E-print Network

clima severo en las redes sociales. Prepararse para clima severo va más allá de proteger a su familiaSemana nacional de preparación para clima severo ­ 2 al 8 de marzo de 2014 Manual para las redes sociales Usted, también, puede ser como una fuerza de la naturaleza en su comunidad ayudando a la Agencia

305

San Juan, Puerto Rico -Jueves 07 Diciembre 2006. Actualizado a las 5:23:26 PM ANTERIOR | SIGUIENTE  

E-print Network

endi.com San Juan, Puerto Rico - Jueves 07 Diciembre 2006. Actualizado a las 5:23:26 PM « ANTERIOR Puerto Rico", manifestó. El radiotelescopio es parte del Centro Nacional de Astronomía e Ionosfera (NAIC / Puerto Rico Hoy Por The Associated Press (10:05 a.m.) Pidió a la NSF que no adopte las recomendaciones de

306

Hydrochemical–isotopic and hydrogeological conceptual model of the Las Tres V??rgenes geothermal field, Baja California Sur, México  

Microsoft Academic Search

Based on geological, structural, hydrochemical and isotopic data, a hydrogeological conceptual model for the geothermal reservoir, shallow wells and springs at the Las Tres V??rgenes geothermal field and its surroundings is proposed. The model explains the genesis of different types of thermal and cold groundwater in the NW (El Azufre Valley, Las Tres V??rgenes and Aguajito complex), NE (Reforma complex)

E. Portugal; P. Birkle; R. M. Barragán R; V. M. Arellano G; E. Tello; M. Tello

2000-01-01

307

Estilos de personalidad, afrontamiento e inteligencia como predictores de las trayectorias académicas de cadetes en una institución militar  

Microsoft Academic Search

Se presentan datos correspondientes a una muestra de 137 estudiantes de una academia militar evaluados durante su periodo de formación. El estudio tiene como objetivo establecer si las variables de personalidad (estilos de personalidad y afrontamiento) y cognitivas (inteligencia) permiten predecir las trayectorias de los estudiantes exitosos y no exitosos que habían recibido entrenamiento militar y académico durante un periodo

Alejandro Castro Solano; María Martina Casullo

2005-01-01

308

Analisis del uso de servicios financieros por parte de las empresas en Mexico. Que nos dice el Censo Economico 2009  

Microsoft Academic Search

Investigamos la tasa de adopcion de las tarjetas de pago considerando el conocimiento de consumidores y comerciantes acerca de las externalidades de red, usando dos niveles de cuotas de intercambio (interchange fees) en un mercado de tarjetas de multi-agente. A efectos de nuestro estudio, en diversas instancias (escenarios) del modelo se analizan los efectos investigados durante todo el proceso de

Sara G. Castellanos; F. Javier Morales; Mariana A. Toran

2012-01-01

309

Utilidad de distintas ayudas en la resolución de un problema de insight y su relación con las estrategias metacognitivas  

Microsoft Academic Search

Resumen: En este trabajo se analiza la relación entre las estrategias meta- cognitivas (EM) y la eficacia de distintas ayudas en la resolución de un problema de insight. Los participantes intentaron resolver el problema de las tres bombillas sin ninguna ayuda o después de recibir distintas pistas que diferían en el nivel de abstracción, y respondieron al cuestionario de auto-informe

Reinaldo Martínez-Fernández; Elisabet Tubau; Llorenç Guilera; Samuel Rabanaque; Edgar Sánchez

310

Uso didáctico de las tecnologías de la información y comunicación en educación física en secundaria. Ejemplo de unidad didáctica  

Microsoft Academic Search

En este artículo se justifica la contribución de las nuevas tecnologías de la información y comunicación (TICs) al área de Educación Física para enriquecer el tratamiento de algunos contenidos. Aunque se trata de una materia evidentemente procedimental, hay contenidos que si son transmitidos con ayuda de las TICs, son mejor asimilados por los alumnos\\/as y están más receptivos durante la

Justo Manuel García Sánchez

2009-01-01

311

LAS IMGENES DE ESPAA Y EL PENSAMIENTO CONSERVADOR DE MIGUEL ANTONIO CARO EN EL Rafael Alonso RUBIANO MUOZ  

E-print Network

LAS IMÁGENES DE ESPA�A Y EL PENSAMIENTO CONSERVADOR DE MIGUEL ANTONIO CARO EN EL SIGLO XIX. Rafael Antonio Caro (1843-1909) constituye uno de los referentes de las letras hispanoamericanas más fecundas y de esta ponencia se establecen los mutuos nexos que el patricio conservador ­ Miguel Antonio Caro

Paris-Sud XI, Université de

312

Candida albicans-produced farnesol stimulates Pseudomonas quinolone signal production in LasR-defective Pseudomonas aeruginosa strains.  

PubMed

Candida albicans has been previously shown to stimulate the production of Pseudomonas aeruginosa phenazine toxins in dual-species colony biofilms. Here, we report that P. aeruginosa lasR mutants, which lack the master quorum sensing system regulator, regain the ability to produce quorum-sensing-regulated phenazines when cultured with C. albicans. Farnesol, a signalling molecule produced by C. albicans, was sufficient to stimulate phenazine production in LasR(-) laboratory strains and clinical isolates. P. aeruginosa ?lasR mutants are defective in production of the Pseudomonas quinolone signal (PQS) due to their inability to properly induce pqsH, which encodes the enzyme necessary for the last step in PQS biosynthesis. We show that expression of pqsH in a ?lasR strain was sufficient to restore PQS production, and that farnesol restored pqsH expression in ?lasR mutants. The farnesol-mediated increase in pqsH required RhlR, a transcriptional regulator downstream of LasR, and farnesol led to higher levels of N-butyryl-homoserine lactone, the small molecule activator of RhlR. Farnesol promotes the production of reactive oxygen species (ROS) in a variety of species. Because the antioxidant N-acetylcysteine suppressed farnesol-induced RhlR activity in LasR(-) strains, and hydrogen peroxide was sufficient to restore PQS production in las mutants, we propose that ROS are responsible for the activation of downstream portions of this quorum sensing pathway. LasR mutants frequently arise in the lungs of patients chronically infected with P. aeruginosa. The finding that C. albicans, farnesol or ROS stimulate virulence factor production in lasR strains provides new insight into the virulence potential of these strains. PMID:20656785

Cugini, Carla; Morales, Diana K; Hogan, Deborah A

2010-10-01

313

Bifurcación de las soluciones de vientos impulsados por radiación en estrellas Be: formación de líneas  

NASA Astrophysics Data System (ADS)

Se ha estudiado la topología de la ecuación hidrodinámica no-lineal que describe el perfil de velocidades de vientos impulsados por radiación en estrellas tempranas. Al aplicar este modelo a estrellas Be se encuentra que existen dos tipos De soluciones: la estándar, que describe el viento polar, y una nueva, que describe un viento más denso y lento y que explicaría el disco que se encuentra alrededor de estos objetos. Existe una región de transición en donde ambas soluciones coexisten (bifurcación}). Ambas soluciones satisfacen en esta región las mismas condiciones de borde. Para estas dos soluciones se han obtenido los perfiles de líneas de hidrógeno del visible y del IR, resolviendo el transporte de radiación en el ``comoving frame". Para la solución estándar, se obtienen perfiles con componentes en emisión, mientras que para la nueva solución se obtienen perfiles en absorción. Se comparan cualitativamente los resultados con las observaciones.

Curé, M.; Rial, D.; Cidale, L.; Venero, R.

314

Geologic Interpretation of the Las Vegas Valley Based on Industry Seismic Reflection Data  

NASA Astrophysics Data System (ADS)

Las Vegas Valley, NV is located in the southern Basin and Range Province where the basin was formed by the Las Vegas Valley Shear Zone as well as by several thrust and normal faulting events that occurred by Cenozoic time. The geology and tectonic setting in the Las Vegas region is poorly understood given the fact that many structures have been covered by the constant growth of the City. National studies of ground motion and amplification of seismic energy placed Nevada third in the list of states having the potential for loss of life and property due to earthquakes. The Las Vegas area has a high potential for strong ground shaking due its thick basin fill and associated amplification. Due to the amplification effects within the Valley, moderate nearby quakes or large distant quakes will produce a large amount of damage in the Valley. Las Vegas, though not known for its earthquakes, has numerous micro quakes and an active seismic history. In a study using HAZUS to predict damage associated with a M6.9 earthquake, the loss would be billions of dollars with thousands of lives lost. Long-term economic loss would be in the several billions of dollars. Recently, several normal faults, which have the potential to produce a M6.5 to 7.0 earthquake, were reclassified as active tectonic fault with Quaternary movement. As a result, there has been increased effort to understand the Las Vegas Valley and to assess its potential for seismic hazards. One such effort included acquiring industry reflection profiles that cross the Valley. In the 1980's, north/south and east/west trending reflection lines with intersecting tie points were placed between Frenchman Mountain to the East and Spring Mountains to produce seismic profiles using Vibroseis. The profiles, which are over 200 kilometers in length and extend down to 5 s in time or approximately 15 km depth, will provide a tie between the surface work that is currently being conducted and the crustal velocity models that are being calculated to produce a seismic hazard potential for the Las Vegas Valley. The quality of the Vibroseis data is very high. We have been able to locate the basin/bedrock contact as well as several faults that cut the sections. All of which have been mapped on the shot point map. Most of the faults appear to be normal faults listric in character that trend north-south paralleling the structure of the southern Basin and Range. Basin geometry and associated minor folding, which have been truncated by minor faulting, can be seen across the profiles. Some faults can be seen as tectonic in origin while others are merely subsidence faulting from basin settling. With this new data we will identify structures that could potentially focus energy in the sub-surface adding to our growing knowledge of the basin geometry. In addition, this data will be incorporated into the seismic hazard model that is being developed for the Las Vegas Valley and will provide very detailed geologic information that has not been previously available.

Hirsch, A.; Snelson, C. M.

2003-12-01

315

Probabilistic risk assessment for linear alkylbenzene sulfonate (LAS) in sewage sludge used on agricultural soil  

Microsoft Academic Search

Deterministic and probabilistic risk assessments were developed for commercial LAS in agricultural soil amended with sewage sludge. The procedure done according to ILSI Europe’s Conceptual Framework [Schowanek, D., Carr, R., David, H., Douben, P., Hall, J., Kirchmann, H., Patria, L., Sequi, P., Smith, S., Webb, S.F., 2004. A risk-based methodology for deriving quality standards for organic contaminants in sewage sludge

Diederik Schowanek; Helen David; Rosa Francaviglia; Jeremy Hall; Holger Kirchmann; Paul Henning Krogh; Nathalie Schraepen; Stephen Smith; Tanja Wildemann

2007-01-01

316

DEVELOPING A GEOGRAPHIC INFORMATION SYSTEM (GIS) TRAVEL DEMAND FORECASTING MODEL FOR LAS VEGAS  

Microsoft Academic Search

A geographic information system (GIS)-based regional travel demand forecasting model was developed for Las Vegas, Nevada. The urban transportation planning system (UTPS) four-step planning procedure of trip generation, trip distribution, mode split, and traffic assignment is performed in an integrated GIS environment thereby improving detail and amount of data available to the analyst. A GIS-based forecasting model provides a wide

P J Shinbein

1999-01-01

317

Modelos auxiliares para problemas de programacion lineal con coeficientes imprecisos en las restricciones  

Microsoft Academic Search

Resumen  En este artículo se considera un problema de Programación Lineal en el que los coeficientes del sistema de inecuaciones lineales,\\u000a que definen el conjunto de restricciones, están dados de forma imprecisa o vaga. Se supone entonces que tales coeficientes\\u000a pueden ser definidos mediante números difusos. Se propone un enfoque de resolución basado en las distintas versiones existentes\\u000a para la comparación

L. Campos; J. L. Verdegay

1989-01-01

318

Comenditic and pantelleritic ash-flow tuffs from Volcan Las Navajas, Nayarit, Mexico  

SciTech Connect

Two distinctive ash-flow tuffs occur around the base of Volcan Las Navajas, a Pleistocene trachyte - peralkaline rhyolite center located in the northwestern segment of the Mexican Volcanic belt. The lower ash-flow unit is locally up to 65 m thick, is lithic rich and contains pumice blocks of comenditic rhyolite. The unit is not extensively exposed, and thus its areal extent and volume cannot be determined. Its chemical characteristics and stratigraphic relationship to other products erupted from Las Navajas suggest that it is related to the formation of the older of the two calderas which occur on Las Navajas. Unconformably overlying this unwelded ash-flow is a pantelleritic airfall pumice unit which is locally welded. This airfall unit is conformably overlain by a welded as-flow tuff that contains fiamme of pantelleritic composition (72 %SiO/sub 2/, 8% FeO*, 900 ppm Zr, agpaitic index of 1.7) as well as pumice blocks that show evidence of various degrees of mixing between pantellerite and trachyte. This suggests eruption from a chemically zoned magma chamber. This unit is locally up to 20 m thick, although its top has been removed by erosion. It is found on all sides of Las Navajas except on the south where it may be covered by Volcan Sanganguey, a Pleistocene to Recent calc-alkaline volcano. The welded ash-flow has been dated by K - Ar at 0.2+/-0.1 m.y. Stratigraphically and chemically this ash-flow appears to be related to the formation of younger of the two calderas.

Nelson, S.A.; Hebre, J.A.

1985-01-01

319

View of Lake Mead and Las Vegas, Nevada area from Sklyab  

NASA Technical Reports Server (NTRS)

A vertical view of the Lake Mead and Las Vegas, Nevada area as photographed from Earth orbit by one of the six lenses of the Itek-furnished S190-A Multispectral Photographic Facility Experiment aboard the Skylab space station. Lake Mead is water of the Colorado River impounded by Hoover Dam. Most of the land in the picture is Nevada, however, a part of the northwest corner of Arizona can be seen.

1973-01-01

320

Quorum-Sensing-Negative (lasR) Mutants of Pseudomonas aeruginosa Avoid Cell Lysis and Death  

Microsoft Academic Search

In Pseudomonas aeruginosa, N-acylhomoserine lactone signals regulate the expression of several hundreds of genes, via the transcriptional regulator LasR and, in part, also via the subordinate regulator RhlR. This regulatory network termed quorum sensing contributes to the virulence of P. aeruginosa as a pathogen. The fact that two supposed PAO1 wild-type strains from strain collections were found to be defective

Karin Heurlier; Valerie Denervaud; Marisa Haenni; Lionel Guy; Viji Krishnapillai; Dieter Haas

2005-01-01

321

CRECIMIENTO, COMERCIO INTERNACIONAL E INSTITUCIONES: Reflexiones a Raíz de las Negociaciones TLC-ALCA  

Microsoft Academic Search

Las discusiones TLC-ALCA hacen pertinente revisar los problemas de crecimiento, apertura y consolidación institucional en Colombia. Dichas negociaciones trascienden los temas arancelarios e incluyen derechos de propiedad y organización institucional. El crecimiento del ingreso real per-capita de América Latina presenta un rezago abismal respecto al del Sudeste Asiático (1,5% vs. 4,8% anual durante 1965-2004), agravándose durante el periodo post-crisis 1997-2004.

Sergio Clavijo

2004-01-01

322

INCORPORA CION DE LAS TIC¥s EN EDUCACION SUPERIOR: SOCIALIZACION DE UNA EXPERIENCIA  

Microsoft Academic Search

Se pretende describir y comprender los comportamientos y din·micas grupales de los estudiantes al incorporar actividades de una asignatura en un ambiente de aprendizaje virtual. Es un estudio cualitativo de caso y las categorÌas emergentes de an·lisis descriptivo son: la gestiÛn del tiempo de los estudiantes, la utilizaciÛn de recursos y herramientas, significados particulares hacia los entornos virtuales y caracterÌsticas

MARTHA LUCIA

2009-01-01

323

Metáforas del artista adolescente: El juego alucinante en Sobre las mismas rocas  

E-print Network

concebirla como "el exterior de una calle con edificios al fondo. Quizás motivos abstractos, geométricos. Puede reducirse a cortinas negras o a la simple boca de un escenario desierto. Pero en todo momento será seca, sobria, sin detalles innecesarios" (22... destruidos, los inútiles, los desposeídos, los ilusos y los soñadores, los que el pensamiento activo inutiliza sus piernas, mis hermanos, a ésos los veo venir entre las sombras" (48). La implícita negación del agón, del ilynx mareante, de la mímica en su...

Febles, Jorge

1994-04-01

324

Las Cumbres Observatory Global Telescope Network: We Will Always Keep You in the Dark  

Microsoft Academic Search

Las Cumbres Observatory Global Telescope Network is a privately-funded, nonprofit organization that is constructing a network of telescopes for scientific and educational use. The telescopes included in the network will be 0.4m, 1.0m, and 2.0m and will be longitudinally placed around the globe in order to achieve 24\\/7 sky coverage of both the Northern and Southern hemispheres. All telescopes will

Rachel J. Ross

2008-01-01

325

A review of "Velázquez’s “Las Meninas.”" by Suzanne L. Stratton-Pruitt ed.  

E-print Network

students and scholars with reconsiderations of canonical works of art through various approaches and methodologies. As Stratton-Pruitt explains, she has pursued this objective not by advancing ?new interpretations,? but rather by offering ?an introduction... to the reception history and the critical fortunes? of Las Meninas (1656, Madrid, Museo del REVIEWS 343 Prado) since its first public exhibition in 1819 (i). This focus on the painting?s modern reception provides an apt counterpart to the recent exhibition...

Tanya J. Tiffany

2003-01-01

326

El peligro de las (in)definiciones: apuntes para un dosier sobre la \\  

Microsoft Academic Search

Toda definicio?n supone en el fondo una cierta forma de res- \\u000atriccio?n. Definir algo es, en esencia, dejar fuera de “lo defi- \\u000anido” todo lo que “por defecto” no es (ejemplo: definir \\u000a“perro” implica dejar claras las diferencias que hay entre ese ani- \\u000amal y, pongamos por caso, un gato... o una silla, tanto da). En el \\u000atema de la

Fernando de Felipe; Joaquim Roglan; Víctor-M. Amela; Joan Tharrats; Salvador Llopart; Bosco Palacios; Mireya Marrón; Martín Gálvez; David Saiz; Félix Romeo

2007-01-01

327

Distribution of linear alkylbenzenes (LABs) and linear alkylbenzenesulphonates (LAS) in Tokyo Bay sediments  

Microsoft Academic Search

Two types of land-derived pollutants, Linear alkylbenzenes (LABs) and linear alkylbenzenesulphonates (LAS), were measured in sediments from Tokyo Bay and the adjacent estuaries. LABs are widely distributed in the estuaries and the northern part of the bay, with relatively constant concentrations of ˜ 1 mug per g-dry sediments. In this area, SigmaLAB contents showed no offshore decrease, indicating that LABs

Hideshige Takada; Ryoshi Ishiwatari; Norio Ogura

1992-01-01

328

Las tcnicas de computacin de altas prestaciones intentan dar respuesta a numerosos problemas de Ciencia  

E-print Network

de innovación, investigación y desarrollo, parques tecnológicos, parques industriales, centros de 1C OB 6 Programación Paralela 1C OB 6 Técnicas de Optimización y Paralelización 1C OB 6 Software de en la página web del máster. LUGAR DE IMPARTICI�N Todas las clases se transmiten en directo por

Fraguela, Basilio B.

329

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

E-print Network

estudiantes de enseñanza secundaria y de universidad con frecuencia mantienen ideas inadecua- das sobre los creencia tan extendida de que el conocimiento científico está probado más allá de cualquier duda o la idea estudiantes como un obstáculo para el aprendizaje de las ciencias (Campanario y Otero, 2000). El lector

Campanario, Juan Miguel

330

The Impact of Urban Development on the Water Quality in the Las Vegas Watershed  

NASA Astrophysics Data System (ADS)

Las Vegas, one of the fastest growing cities in the nation, must have its water strictly monitored for quality as well as degree of pollution. Samples at various sites were collected to analyze the current pollution status of our water bodies (in both residential and urban settings) in the Las Vegas watershed. These gathered samples (sediment and water) were collected and analyzed for measuring total phosphorus, total organic carbon, trace metal contents, i.e., selenium, arsenic, mercury and lead, as well as pathogens, i.e., E-coli and total coliform counts. The concentrations of various pollutions will be compared among different sites as well as natural local sites (due to the natural occurrence of a few trace metals and normal levels of other measurements) and analyzed for spatial distribution for source identification and for elucidating the cause and consequence. Preliminary analyses of the results indicate that nonpoint source pollutions (golf courses, construction sites, etc.) have larger impacts than point source pollutions such as wastewater treatment effluents. This study will help understand and evaluate the degradation of the water quality caused by the increase of human actions in recent years in Las Vegas.

Yu, A.; Simmons, C.; Acharya, K.

2009-12-01

331

MBAS (Methylene Blue Active Substances) and LAS (Linear Alkylbenzene Sulphonates) in Mediterranean coastal aerosols: Sources and transport processes  

NASA Astrophysics Data System (ADS)

Methylene Blue Active Substances (MBAS) and Linear Alkylbenzene Sulphonates (LAS) concentrations, together with organic carbon and ions were measured in atmospheric coastal aerosols in the NW Mediterranean Basin. Previous studies have suggested that the presence of surfactants in coastal aerosols may result in vegetation damage without specifically detecting or quantifying these surfactants. Coastal aerosols were collected at a remote site (Porquerolles Island-Var, France) and at a more anthropised site (San Rossore National Park-Tuscany, Italy). The chemical data were interpreted according to a comprehensive local meteorological analysis aiming to decipher the airborne source and transport processes of these classes of compounds. The LAS concentration (anthropogenic surfactants) was measured in the samples using LC-MS/MS, a specific analytical method. The values were compared with the MBAS concentration, determined by a non-specific analytical method. At Porquerolles, the MBAS concentration (103 ± 93 ng m -3) in the summer samples was significantly higher than in the winter samples. In contrast, LAS concentrations were rarely greater than in the blank filters. At San Rossore, the mean annual MBAS concentration (887 ± 473 ng m -3 in PM10) contributed about 10% to the total atmospheric particulate organic matter. LAS mean concentration in these same aerosol samples was 11.5 ± 10.5 ng m -3. A similar MBAS (529 ± 454 ng m -3) - LAS (7.1 ± 4.1 ng m -3 LAS) ratio of ˜75 was measured in the fine (PM2.5) aerosol fraction. No linear correlation was found between MBAS and LAS concentrations. At San Rossore site the variation of LAS concentrations was studied on a daily basis over a year. The LAS concentrations in the coarse fraction (PM10-2.5) were higher during strong sea storm conditions, characterized by strong air flow coming from the sea sector. These events, occurring with more intensity in winter, promoted the formation of primary marine aerosols containing LAS from the sea surface microlayer. In contrast to LAS, MBAS concentrations in the coarse fraction peaked in summer. Therefore, different sources are suggested for the two classes of compounds. In summer, increased MBAS concentration could be an indicator of phytoplanktonic blows enriching the sea surface microlayer with biogenic surfactants. In winter, some spikes in MBAS concentrations in the coarse fraction could be related to LAS concentrations and sea storm events. Moreover, in the fine fraction MBAS have a large concentration maxima in winter, corresponding to air masses coming from polluted continental areas. It is concluded that MBAS concentration in the fine or the coarse fraction is not an appropriate surrogate measurement of LAS concentration in aerosols because of the significant contribution from other sources to the MBAS concentration.

Becagli, S.; Ghedini, C.; Peeters, S.; Rottiers, A.; Traversi, R.; Udisti, R.; Chiari, M.; Jalba, A.; Despiau, S.; Dayan, U.; Temara, A.

2011-12-01

332

LA INFLUENCIA DE LAS POLÍTICAS DE RESPONSABILIDAD SOCIAL Y LA PERTENENCIA A REDES DE COOPERACIÓN EN EL CAPITAL RELACIONAL Y ESTRUCTURAL DE LAS MICROEMPRESAS \\/ THE INFLUENCE OF SOCIAL RESPONSIBILITY POLICIES AND BELONGING TO COOPERATION NETWORKS IN THE RELATIONAL AND STRUCTURAL CAPITAL OF MICRO-ENTERPRISES  

Microsoft Academic Search

Las microempresas presentan algunos atributos que las distinguen de las grandes empresas y de los que se derivan algunos inconvenientes a la hora de adoptar principios y políticas de responsabilidad social. Sin embargo, los principios de responsabilidad social pueden y deben integrarse en cualquier tipo de organización, incluida la microempresa. En este trabajo, se estudia cómo las redes de cooperación

Sonia Benito Hernández; Pablo Esteban Sánchez

2012-01-01

333

Final Report for the Arroyo Las Positas Maintenance Impact Study, Lawrence Livermore National Laboratory  

SciTech Connect

In 2000, the Lawrence Livermore National Laboratory's (LLNL) Environmental Protection Department, in coordination with Plant Engineering (PE), began dredging sections of the Arroyo Las Positas (ALP) to alleviate concerns about flooding of sensitive facilities within the mainsite of Lawrence Livermore National Laboratory. In order to reduce potential impacts on the federally threatened California red-legged frog (Rana aurora draytonii), LLNL proposed to dredge sections of the ALP in a ''checkerboard pattern'', resulting in a mosaic of open water habitat and vegetated sections (Figure 1). The Arroyo Las Positas Management Plan (Plan) was coordinated with both state and federal agencies including the U.S. Fish and Wildlife Service (USFWS), California Department of Fish and Game (CDF&G), San Francisco Regional Water Quality Control Board (SFRWQCB), and the Army Corp of Engineers (ACOE). Water Discharge Requirements (WDRs) were issued for this project on December 30, 1999 (Order No. 99-086) by the SFRWQCB. Provision 19 of the WDRs outlined a five-year (2000 through 2004) Maintenance Impact Study (MIS) that LLNL began in coordination with dredging work that was conducted as part of the Arroyo Las Positas Management Plan. Provision 20 of these WDRs requires LLNL to submit a final report of the results of the Maintenance Impact Study for this project to the SFRWQCB. The purpose of this report is to present the results of the Maintenance Impact Study for Arroyo Las Positas and meet the requirements of Provision 20. A description of the annual monitoring included in this Maintenance Impact Study is included in the methods section of this report. Initially the Plan called for dredging the entire length of the Arroyo Las Positas (approximately 6,981 linear feet) over a 5-year period to minimize temporal impacts on the California red-legged frog. Dredging occurred in 2000 ({approx}1,300 ft.), 2001 ({approx}800 ft.), and 2002 ({approx}1,200 ft.), which constituted approximately 3,300 ft., or roughly half of the entire Plan (Figure 2). Logistical challenges and unanticipated cost influenced the decision to terminate the project prior to completion, and re-evaluate the long-term management goals for the ALP. No dredging was conducted in the final two years of the plan (2003 and 2004).

van Hattem, M; Paterson, L

2006-01-12

334

Shear Velocity Structure Beneath the Las Vegas Valley, Nevada From Regional and Teleseismic Events  

NASA Astrophysics Data System (ADS)

The Las Vegas Valley (LVV), Nevada is located in the central Basin and Range province of western North America. The Valley sits atop a broad sedimentary basin and is susceptible to large earthquakes generated by local and regional faults. During ground motion events, the Las Vegas basin has been found to amplify seismic energy. In addition, the crustal and upper mantle structure of the Valley is poorly understood. Therefore, surface wave data have been used to create shear velocity profiles of the crust and upper mantle beneath LVV using regional and teleseismic events. This project is part of a larger collaborative study, which is characterizing the Las Vegas basin for test site readiness and seismic hazards. Although the frequency of large events is small, the risk associated with such an event is very high for the Valley. As a result, the Las Vegas Valley Broadband array (LVVBB) was deployed in late September 2002 by Lawrence Livermore National Laboratory and the University of Nevada Las Vegas. It consists of a mixture of twelve three-component broadband and short period seismometers deployed in a saw-tooth geometry oriented northeast-southwest across the northeastern and central LVV, above the area estimated to be the deepest portion of the basin. Data examined as part of this study include both regional and global earthquake events recorded within a five-month period on seven of the twelve stations. All seven broadband stations used a three-component Guralp CMG40T sensor with a 40 samples/second sampling rate. Group velocity dispersion curves from Rayleigh waves and Love waves were determined using a multiple filter technique. Rayleigh wave group velocities range from 2.7 to 3.5 km/s for periods from 10 to 30s. Love wave group velocities range from 3.1 to 4.0 km/s for periods from 10 to 100s. In addition, Rg and Lg were examined from local events. 1-D shear velocity profiles of the crust and upper mantle have been produced through inversion along regional source-receiver paths and two-station paths. Shear velocities at depths of 3-5 km have never been directly determined in the Valley; these values will be used to better understand the seismic hazards in the area as well as the tectonic development of southern Nevada in the Basin and Range province.

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

2004-12-01

335

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

SciTech Connect

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

Piotr Wasiolek

2008-06-01

336

Earthquakes in the Classroom, Las Vegas, NV: The Nevada Educational Seismic Network (NESN)  

NASA Astrophysics Data System (ADS)

Geophysics is a term guaranteed to strike fear into the heart of the bravest high school science student. Using math to describe the earth can involve complex equations that can only be deciphered by enigmatic computer programs. But high school science students in the Las Vegas Valley have been given a unique opportunity to gather important research information while learning about geophysics, real-time data collection, and Internet communications in a less threatening environment. Three seismograph stations funded by the Department of Energy and the University of Nevada, Las Vegas have been installed in three different high schools in the Clark County School District. These three stations form a triangle in the Las Vegas Valley basin covering areas where the basin depths change significantly. The geophones are buried outside and a cable connects the sensors and GPS receiver to a digitizer on a local PC. The data is transmitted continuously in real-time via Internet communications protocols to the Seismic Explorer Monitoring Network. There it is available to all schools and to researchers who will analyze the data. These short-period geophones will record small local earthquakes and larger more distant events contributing to real-time seismic network operations in southern Nevada. Students at a school site are able to see live real-time data from other school stations as well as from seismograph stations in southern Nevada, the western US, and the world. Mentored by researchers at the University of Nevada, Reno and University of Nevada, Las Vegas, the teachers and students conduct simple waveform analysis to determine earthquake locations and magnitudes and operate the stations in this cooperative research effort. The goal of this partnership between secondary and university educational systems is to create a successful alliance that will benefit the research community as well as the classroom teacher and his/her students. Researchers will use the data collected from the schools in studies of the structure in the Las Vegas Valley basin and evaluation of the local seismicity. A major goal for the secondary teacher is the development of lesson plans that will use the collected data as a learning tool to help their students gain a better understanding of specific scientific concepts. Using the latest software and data communications technologies, students participating in this project will be on the cutting edge of establishing a model for urban seismic networks.

Hopkins, J.; Snelson, C. M.; Zaragoza, S. A.; Smith, K.; Depolo, D.

2002-12-01

337

Investigaccion-accion en la sala de clases sobre las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios y su relacion reciproca con el aprendizaje de las ciencias biologicas  

NASA Astrophysics Data System (ADS)

La investigacion---accion que se llevo a cabo en la sala de clases tenia como punto de partida las creencias de la cultura de la ciencia de un grupo de estudiantes universitarios para luego examinar sus implicaciones en el proceso de aprendizaje de las Ciencias Biologicas. ¿Que se supone que hagan las creencias en relacion con el aprendizaje? ¿En que consiste incorporar este aspecto a la practica educativa universitaria? Utilizando el modelo de Kemmis y McTaggart (1987) la investigacion-accion se planteo como un proceso dinamico en cuatro momentos en espiral constituidos por la planificacion, la accion, la observacion y la reflexion. Cada una de las fases tuvo una intencion retrospectiva y prospectiva formando una espiral de autorreflexion del conocimiento y la accion. Se llevaron a cabo audio grabaciones en clases y analisis de documentos. Ademas, la profesora-investigadora hizo un portafolio para reflexionar sobre las creencias de la cultura de la ciencia que tienen los estudiantes y las creencias del aprendizaje que tiene la profesora y sobre como la comprension de estos elementos ayudo a mejorar su practica educativa a traves del tiempo. Los resultados obtenidos apuntan a que las creencias de la cultura de la ciencia que tiene el grupo de estudiantes son diversas. Ellos si creen que la ciencia tiene una cultura la cual describieron como: complicada y desconocida que evoluciona constantemente, que es un conjunto de metodos, que es altamente tecnologica, que resuelve problemas de salud, ayuda a interpretar la realidad del mundo que los rodea y su origen y que existen unas intersecciones entre la ciencia y el poder. Sobre las creencias del proceso de aprendizaje de la profesora-investigadora, estas senalan que el modelaje de actores, la vision de la academia que tiene ella asi como la participacion y negociacion entre todos los involucrados en el proceso educativo, son factores que inciden en el proceso de aprendizaje.

Cordova-Santiago, Lizzette Astrid

338

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

NASA Astrophysics Data System (ADS)

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

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

2004-12-01

339

An Aerial Radiological Survey of the Las Vegas Strip and Adjacent Areas  

SciTech Connect

As proficiency training for the Radiological Mapping mission of the Aerial Measuring System (AMS), a survey team from the Remote Sensing Laboratory–Nellis (RSL-Nellis) conducted an aerial radiological survey of the Las Vegas Strip and adjacent areas on December 29, 2008. This survey was one of the bi-annual surveys carried in support of the city of Las Vegas Police Department (LVPD) before significant events on the Las Vegas Strip: e.g., the annual New Year’s Eve and July Fourth celebrations. The AMS operation and appropriate law enforcement agencies selected this area as an appropriate urban location to exercise AMS capability for mapping environmental radiation and searching for man-made radioactive sources. The surveys covered approximately 11 square miles. Each survey required a 2.5-hour-long flight, performed at an altitude of 300 ft above ground level (AGL) at a line spacing of 600 ft. Water line and test line flights are conducted over the Lake Mead and Government Wash areas to determine the non-terrestrial background contributed by aircraft, radon, and cosmic activity, and to determine the altitude-dependent air mass correction. The data were collected by the AMS data acquisition system (REDAR V) using an array of twelve 2" x 4" x 16" sodium iodide (NaI) detectors flown on-board a twin-engine Bell 412 helicopter. Gamma energy spectral data were collected second-by-second over the survey area. This spectral data allows the system to distinguish between natural terrestrial background contributions and man-made radioisotope contributions. Spectral data can also be used to identify specific man-made radioactive isotopes. Data geo-locations were determined with a Real-Time Differential Global Positioning System (RDGPS).

Wasiolek, Piotr [NSTec

2009-02-01

340

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

SciTech Connect

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

Piotr Wasiolek

2007-12-01

341

40 CFR 81.82 - El Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region.  

Code of Federal Regulations, 2014 CFR

...Paso-Las Cruces-Alamogordo Interstate Air Quality Control Region. 81.82 Section 81...CONTINUED) DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES Designation of Air Quality Control Regions § 81.82 El...

2014-07-01

342

Paper presented at the International Society of Logistics (SOLE) 1999 Symposium, Las Vegas, Nevada, August 30 September 2, 1999.  

E-print Network

Paper presented at the International Society of Logistics (SOLE) 1999 Symposium, Las Vegas, Nevada, and challenges to institutional and logistical processes for exploiting prognostics. Introduction Prognostics technologies, the analytical challenges involving predictive methods, and the logistical challenges centering

343

Geometria diferencial. Problemas 1 1. Como podriamos definir una variedad con borde? Sugerencia: permite que las cartas sean  

E-print Network

variedad diferenciable: Pn (R) = {rectas en Rn+1 que pasan por el origen} . Sugerencia: casi cualquier´iamos haber asumido que todas las cartas son difeomorfismos sobre la bola de radio 1. Probar que tambi´en podr

Enciso, Alberto

344

Las Escrituras del Margen. En Torno a los Territorios Canónicos de la Literatura Latinoamericana  

E-print Network

crónicas americanas, en las cuales la visión del paisaje, más que el encuentro con los nativos, es el centro de lo narrado: “en los cronistas el asombro está dictado por la misma naturaleza, por un paisaje que ansioso 8 de expresión se vuelca sobre el... ensambla en otro pensamiento –incluso a través del tiempo- mediante la lectura. Contrario a lo que suele comúnmente decirse, la lectura implica no sólo una actividad intelectual, también un compromiso del cuerpo. Para leer se requiere de la atención, la...

Ayarza-Riveros, Luis Carlos

2013-12-09

345

Las Cumbres Observatory: Building a global telescope network from the ground up  

NASA Astrophysics Data System (ADS)

Las Cumbres Observatory Global Telescope Network (LCOGT) are building a global network of telescopes which will be available to both professional scientists and the science curious public. This telescope network will be global and so will the community, therefore all aspects of the endeavour must be online and self-sustaining - from the observing software to the analysis tools. During 2012 LCOGT have deployed the first 1-meter telescopes, and launched a citizen science project using LCOGT data, Agent Exoplanet, as well as many other online resources for anyone to use as they explore astronomy.

Gomez, E. L.

2015-03-01

346

The Luminosity Function of Galaxies in the Las Campanas Redshift Survey  

Microsoft Academic Search

We present the $R$-band luminosity function for a sample of 18678 galaxies,\\u000awith average redshift $z = 0.1$, from the Las Campanas Redshift Survey. The\\u000aluminosity function may be fit by a Schechter function with $M^* = -20.29 \\\\pm\\u000a0.02 + 5 \\\\log h$, $\\\\alpha = -0.70 \\\\pm 0.05$, and $\\\\phi^* = 0.019 \\\\pm 0.001 \\\\\\u000ah^3$~Mpc$^{-3}$, for absolute magnitudes

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

1996-01-01

347

La promoción turística oficial en Internet y su relación con el desarrollo turístico de los destinos: Una aplicación a las Ciudades medias de Andalucía  

Microsoft Academic Search

Resumen: Este trabajo analiza las webs de promoción oficial de destinos turísticos de interior de Andalucía. En el mismo se confirma la existencia de una relación entre el desarrollo turístico y el nivel de desarrollo de las webs. El estudio aporta una metodología basada en la contabilización de elemento (“counting methods”), obteniendo como resultado un estudio descriptivo de las webs

Pablo Díaz Luque; Blanca López Catalán

2012-01-01

348

Oficina de Gestin Ambiental y Sostenibilidad (OGAS) A lo largo del curso 2012-13 destacan las siguientes actuaciones de la OGAS  

E-print Network

Oficina de Gestión Ambiental y Sostenibilidad (OGAS) A lo largo del curso 2012-13 destacan las modificación urbanística del campus, coordinación y redacción de la documentación ambiental. -- Colaboración con las empresas contratadas: análisis de las propuestas en materia ambiental del nuevo servicio de

Oro, Daniel

349

Integración de las tecnologías de la información y la comunicación (TIC) en los centros de Educación Superior de Castilla y León  

Microsoft Academic Search

Esta investigación tiene por objeto analizar la Integración de las TIC en los Centro de Educación Superior de Castilla y León. A pesar de que los estudios sobre las TIC en la educación tienen una profusa tradición, las concreciones realizadas acerca del objeto de estudio, el enfoque dado y su concreción a la educación universitaria dotan a la presente investigación

Roberto Baelo Álvarez

2008-01-01

350

Animaciones en 3D en tiempo real para las clases de ciencias e ingeniería: Ejemplos desarrollados con el módulo de programación VPython  

Microsoft Academic Search

RESUMEN: Se describe el uso del módulo de programación VPython para desarrollar animaciones en 3D por computadora para ilustrar temas de interés para las clases. Mostramos la utilidad del uso de animaciones para reforzar las presentaciones de materias como física y matemática, entre otras. Con tales presentaciones se puede innovar en el desarrollo de las clases de ciencias e ingeniería

Eduardo E. Rodríguez

351

Las aguas de Sierra Nevada. A. Castillo (1993) 1 Captulo de libro publicado en: "Aguas de Sierra Nevada". E. Ed. EMASAGRA. ISBN: 84-604-  

E-print Network

Las aguas de Sierra Nevada. A. Castillo (1993) 1 Capítulo de libro publicado en: "Aguas de Sierra Nevada". E. Ed. EMASAGRA. ISBN: 84-604- 8103-4, 185-252. 1993 LAS AGUAS DE SIERRA NEVADA por el Dr de Sierra Nevada. A. Castillo (1993) 2 LAS AGUAS DE SIERRA NEVADA Capítulo I.- EL AGUA EN SIERRA

Castillo, Antonio

352

40 CFR 51.917 - What is the effective date of designation for the Las Vegas, NV, 8-hour ozone nonattainment area?  

Code of Federal Regulations, 2010 CFR

...designation for the Las Vegas, NV, 8-hour ozone nonattainment area? 51.917 Section...Provisions for Implementation of 8-hour Ozone National Ambient Air Quality Standard...designation for the Las Vegas, NV, 8-hour ozone nonattainment area? The Las...

2010-07-01

353

Hoffmann, Odile, "Las narrativas de la diferencia tnico-racial en la Costa chica, Mxico. Una perspectiva geogrfica", pp 363-397, dans Odile Hoffmann et Mara  

E-print Network

Hoffmann, Odile, "Las narrativas de la diferencia étnico-racial en la Costa chica, México. Una narrativas de la diferencia étnico-racial en la Costa Chica, México. Una perspectiva geográfica Odile las diferencias y las categorías "étnicas" y "raciales" en la vida cotidiana de dos pueblos vecinos

Paris-Sud XI, Université de

354

Influence of linear alkylbenzene sulfonate (LAS) on the structure of Alphaproteobacteria , Actinobacteria , and Acidobacteria communities in a soil microcosm  

Microsoft Academic Search

Background, aim, and scope  Linear alkylbenzene sulfonate (LAS) is the most used anionic surfactant in a worldwide scale and is considered a high-priority\\u000a pollutant. LAS is regarded as a readily biodegradable product under aerobic conditions in aqueous media and is mostly removed\\u000a in wastewater treatment plants, but an important fraction (20–25%) is immobilized in sewage sludge and persists under anoxic\\u000a conditions.

Jesús González-López; Clementina Pozo; Belén Rodelas

2010-01-01

355

El impacto de las TIC en el rendimiento de los estudiantes de educación superior: Efectos directos, indirectos y cambio organizativo  

Microsoft Academic Search

El propósito de este estudio es examinar la relación entre el uso de las tecnologías de la información y de la comunicación (TIC) y el rendimiento de los estudiantes en la educación superior. Hasta ahora, la investigación económica no ha logrado alcanzar un consenso claro acerca del efecto de las inversiones en TIC sobre los resultados de los estudiantes.\\u000aNuestro

Adel Ben Youssef; Mounir Dahmani

2008-01-01

356

Overexpression of the Brassica napus BnLAS gene in Arabidopsis affects plant development and increases drought tolerance  

Microsoft Academic Search

The GRAS proteins are a family of transcription regulators found in plants and play diverse roles in plant growth and development.\\u000a To study the biological roles of GRAS family genes in Brassica napus, an Arabidopsis LAS homologous gene, BnLAS and its two homologs were cloned from B. napus and its two progenitor species, Brassica rapa and Brassica oleracea. Relatively high

Minggui Yang; Qingyong Yang; Tingdong Fu; Yongming Zhou

2011-01-01

357

The Las Matras tonalitic–trondhjemitic pluton, central Argentina: Grenvillian-age constraints, geochemical characteristics, and regional implications  

Microsoft Academic Search

The N–S trending belt with Grenvillian-age rocks developed in central western Argentina represents the basement of an allochthonous terrane derived from Laurentia during the Early Paleozoic. The Las Matras pluton (36°46?S, 67°07?W) is located at the southern extension of this belt in the Las Matras Block. It consists of a low-Al tonalitic to trondhjemitic facies characteristic of an arc magmatism.

A.M. Sato; H. Tickyj; E. J. Llambiasa; K. Sato

2000-01-01

358

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

SciTech Connect

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

Rodgers, A

2008-01-16

359

A brief hydrologic appraisal of the July 3-4, 1975, flash flood in Las Vegas Valley, Nevada  

USGS Publications Warehouse

Heavy thunderstorm precipitation on the afternoon of July 3, 1975, between metropolitan Las Vegas and the mountains to the south, west, and north, caused flash flooding in the city area. Total storm precipitation equaled or exceeded 3 inches (76 mm) in some areas. The total storm yield on the area of significant runoff was probably between 20,000 and 25,000 acre-feet (2.5 x 107 m3 and 3.1 x 107 m3) of water. Of this amount, probably less than 3,000 acre-feet (37 x 106 m3) flowed directly to Lake Mead. Peak flows of Tropicana Wash, Flamingo Wash, Las Vegas Creek, and Las Vegas Wash were the highest ever determined. Flooding caused the loss of two lives and inflicted extensive property damage. Total damage was reportedly estimated by the Clark County Flood Control District at $4-5 million. Problems associated with sediment erosion, transportation, and deposition occurred throughout the flooded area. An unknown amount of the material transported during the flood was deposited in Lake Mead near the mouth of Las Vegas Wash. Lateral erosion appeared more prominent than vertical erosion along most major channels, except on Las Vegas Wash at Northshore Road where downcutting threatened the loss of the highway. Sediment deposits were particularly noticeable and troublesome in Flamingo Wash at Caesars Palace parking lot and on the Winterwood Golf Course near the junction of Flamingo Wash and Las Vegas Wash.

Katzer, T.L.; Glancy, Patrick A.; Harmsen, Lynn

1976-01-01

360

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

SciTech Connect

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

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

1994-01-01

361

A system dynamics model to facilitate public understanding of water management options in Las Vegas, Nevada.  

PubMed

Water managers increasingly are faced with the challenge of building public or stakeholder support for resource management strategies. Building support requires raising stakeholder awareness of resource problems and understanding about the consequences of different policy options. One approach that can help managers communicate with stakeholders is system dynamics modeling. Used interactively in a public forum, a system dynamics model can be used to explain the resource system and illustrate the effects of strategies proposed by managers or suggested by forum participants. This article illustrates the process of building a strategic-level system dynamics model using the case of water management in Las Vegas, Nevada. The purpose of the model was to increase public understanding of the value of water conservation in Las Vegas. The effects of policies on water supply and demand in the system are not straightforward because of the structure of the system. Multiple feedback relationships lead to the somewhat counterintuitive result that reducing residential outdoor water use has a much greater effect on water demand than reducing indoor water use by the same amount. The model output shows this effect clearly. This paper describes the use of the model in research workshops and discusses the potential of this kind of interactive model to stimulate stakeholder interest in the structure of the system, engage participant interest more deeply, and build stakeholder understanding of the basis for management decisions. PMID:12710919

Stave, Krystyna A

2003-04-01

362

Quaternary Faults and Basin-fill Sediments of the Las Vegas Basin, Southern Nevada  

NASA Astrophysics Data System (ADS)

The N-S elongated extensional Las Vegas basin, southern Nevada, contains 100's of meters of Cenozoic basin-fill sediments that are cut by several Quaternary (Q) faults. These faults define or influence the basin geometry. The basin is generally an asymmetrical half graben defined by the W-dipping, Q Frenchman Mountain fault (FMF) along its E side and a series of smaller offset E-dipping faults to the W. The N terminus of the basin is controlled by the Las Vegas Valley shear zone, along which the majority of the offset occurred prior to the Q. Here, we asses the influence of the Q faults on the distribution of the sedimentary units. Well, exposure, seismic reflection and seismic refraction data show that sedimentary units of different grain sizes or seismic velocity dominate different parts of the basin. Sections dominated by coarse clastic deposits occupy a narrow area along the E side of the basin. Coarse clastic sediments are mixed with finer grained sediments in a broader area along the W side of the basin. Based on provenance and alluvial fan distribution, the coarse deposits along the E side of the basin appear to be trapped in close proximity to the W-dipping FMF. The coarse-grained deposits along the opposite, W side of the basin, are sourced from the nearby Spring Mountains. Because of the structural asymmetry of the basin, these sediments traveled farther from their source area than those on the E side. Some of these E-dipping faults influence the depth to Paleozoic bedrock and some faults form small sub-basins filled with finer grained sediments. Along a WNW trend near the center of the basin and near the present-day Las Vegas Wash, a change in the grain size distribution occurs up stratgraphic section: continuous clay layers are less common and coarse-grained deposits are more common. This difference may reflect a change from internal drainage early in the basin history to external drainage through the Las Vegas Wash in the latter history of the basin-fill sedimentation. This interpretation implies that the FMF was breached by a wash connected to the Colorado River drainage system during basin development. The basin fill deposits suggest an early history of alluvial fan dominated deposits showing internal drainage. That depositional system was followed by E- and W-sloping alluvial fans cut by a NW-trending external drainage system that probably flowed to the Colorado River. The greatest structural influence on sediment distribution was from the Q FMF on the E side of the basin and the dominantly Miocene Las Vegas Valley shear zone on the north, but the structural influence is reduced as Colorado River system and base level imposes on the basin up section.

Taylor, W. J.; Fossett, E.; Luke, B.; Snelson, C.; Rasmussen, T.; McCallen, D.; Rodgers, A.; Louie, J.

2003-12-01

363

A substitution at His-120 in the LasA protease of Pseudomonas aeruginosa blocks enzymatic activity without affecting propeptide processing or extracellular secretion.  

PubMed Central

The LasA protease of Pseudomonas aeruginosa can degrade elastin and is an important contributor to the pathogenesis of this organism. LasA (20 kDa) is a member of the beta-lytic endopeptidase family of extracellular bacterial proteases, and it shows high-level staphylolytic activity. We sequenced the lasA gene from strain FRD1 and overexpressed it in Escherichia coli. The lasA gene encodes a precursor, known as pre-proLasA, of 45,582 Da. Amino-terminal sequence analysis allowed the identification of the signal peptidase cleavage site and revealed that the 31-amino-acid signal peptide was removed in E. coli. The remaining proLasA (42 kDa) did not undergo autoproteolytic processing and showed little staphylolytic activity. However, it was readily processed to a 20-kDa active staphylolytic protease by incubation with trypsin or with the culture filtrate of a P. aeruginosa lasAdelta mutant. Thus, removal of the propeptide (22 kDa) was required to convert proLasA into an active protease. Although LasA protease was critical for staphylolytic activity, other proteases like elastase were found to enhance staphylolysis. Under the control of an inducible trc promoter, lasA was overexpressed in P. aeruginosa and the processing intermediates were examined. Compared with wild-type cells, the overproducing cells accumulated more 42-kDa proLasA species, and the culture supernatants of the overproducing cells showed increased levels of active 20-kDa LasA protease. Small amounts of a 25-kDa extracellular LasA-related protein, which could represent a potential processing intermediate, were also observed. To better understand the structure-function relationships in LasA protease, we tested whether His-120-X-His-122 in the mature portion of LasA plays a role in activity. This motif and surrounding sequences are conserved in the related beta-lytic protease of Achromobacter lyticus. Oligonucleotide-directed mutagenesis was used to change His-120 to Ala-120, thus forming the lasA5 allele. The product of lasA5 expressed from the chromosome of P. aeruginosa was processed to a stable, secreted 20-kDa protein (designated LasA-H120A) which was devoid of staphylolytic activity. This suggests that His-120 is essential for LasA activity and favors the possibility that proLasA processing and secretion in P. aeruginosa can proceed via mechanisms which do not involve autoproteolysis. PMID:8932318

Gustin, J K; Kessler, E; Ohman, D E

1996-01-01

364

Crystal Structure of the LasA Virulence Factor from Pseudomonas aeruginosa: Substrate Specificity and Mechanism of M23 Metallopeptidases  

SciTech Connect

Pseudomonas aeruginosa is an opportunist Gram-negative bacterial pathogen responsible for a wide range of infections in immunocompromized individuals and is a leading cause of mortality in cystic fibrosis patients. A number of secreted virulence factors, including various proteolytic enzymes, contribute to the establishment and maintenance of Pseudomonas infection. One such is LasA, an M23 metallopeptidase related to autolytic glycylglycine endopeptidases such as Staphylococcus aureus lysostaphin and LytM, and to DD-endopeptidases involved in entry of bacteriophage to host bacteria. LasA is implicated in a range of processes related to Pseudomonas virulence, including stimulating ectodomain shedding of the cell surface heparan sulphate proteoglycan syndecan-1 and elastin degradation in connective tissue. Here we present crystal structures of active LasA as a complex with tartrate and in the uncomplexed form. While the overall fold resembles that of the other M23 family members, the LasA active site is less constricted and utilizes a different set of metal ligands. The active site of uncomplexed LasA contains a five-coordinate zinc ion with trigonal bipyramidal geometry and two metal-bound water molecules. Using these structures as a starting point, we propose a model for substrate binding by LasA that explains its activity against a wider range of substrates than those used by related lytic enzymes, and offer a catalytic mechanism for M23 metallopeptidases consistent with available structural and mutagenesis data. Our results highlight how LasA is a structurally distinct member of this endopeptidase family, consistent with its activity against a wider range of substrates and with its multiple roles in Pseudomonas virulence.

Spencer, James; Murphy, Loretta M.; Conners, Rebecca; Sessions, Richard B.; Gamblin, Steven J. (Wales); (Bristol Med Sci); (NIMR)

2010-09-21

365

Water banking through artificial recharge, Las Vegas Valley, Clark County, Nevada  

NASA Astrophysics Data System (ADS)

Artificially recharging the Las Vegas Valley groundwater system is one water resource management option available to the Las Vegas Valley Water District (District) to help meet increasing summer peak water demands. In a few years the existing water transmission system from Lake Mead will be unable to meet the short-term summer peak demands, and artificial recharge can be used to alleviate this constraint. In addition to meeting peak demands, artificial recharge can be used to bank the remaining portion of Nevada's unused allocation from the Colorado River for future use. At the present time (1988) the water supply for Las Vegas Valley is made up of ? 75% Colorado River water (about one-third of Nevada's 300 000 acre-feet consumptive use Colorado River allocation) and ? 25% groundwater, which is used primarily in the summer to meet peak demands. The District is investigating the feasibility of increasing the importation of treated Colorado River water into the valley during winter months, banking the water by artificially recharging the groundwater system, and subsequently withdrawing this water to meet summer peak demands and future needs. There were two major concerns regarding the feasibility of artificially recharging treated Colorado River water by deep aquifer injection. The first was the potential for calcite precipitation resulting from native groundwater and aquifer sediments mixing with treated Colorado River water which could reduce the aquifer permeability. The second was the long-term effects on well performance and production longevity by injecting through production wells. Although previous laboratory studies predicted that calcite precipitation would occur, a small-scale artificial recharge pilot study, conducted by the District in 1987, showed insignificant calcite precipitation. A larger scale demonstration project, initiated in February 1988, injected a total of 1153 acre-feet of treated Colorado River water into the principal groundwater system through two existing production wells. Injection was completed in late April and recovery of the native groundwater and Colorado River water mixture continued throughout the summer and fall. Recharge was accomplished by injection through the existing pump columns with minimal retrofitting of the existing wells and no detrimental effects to the pumps or well production rates have been determined. Water quality analyses and geochemical modeling indicate very little, if any, calcite precipitated during recharge and recovery.

Brothers, Kay; Katzer, Terry

1990-07-01

366

Neighborhood Reputation and Resident Sentiment in the Wake of the Las Vegas Foreclosure Crisis  

PubMed Central

This study examines how two major components of a neighborhood’s reputation—perceived disorder and collective efficacy—shape individuals’ sentiments toward their neighborhoods during the foreclosure crisis triggered by the Great Recession. Of central interest are whether neighborhood reputations are durable in the face of a crisis (neighborhood resiliency hypothesis) or whether neighborhood reputations wane during times of duress (foreclosure crisis hypothesis). Geo-coded individual-level data from the Las Vegas Metropolitan Area Social Survey merged with data on census tract foreclosure rates are used to address this question. The results provide qualified support for both perspectives. In support of the neighborhood resiliency hypothesis, collective efficacy is positively associated with how residents feel about the quality of their neighborhoods, and this relationship is unaltered by foreclosure rates. In support of the foreclosure crisis hypothesis, foreclosure rates mediate the effects of neighborhood disorder on resident sentiment. The implications of these findings for community resiliency are discussed. PMID:25678735

Pais, Jeremy; Batson, Christie D.; Monnat, Shannon M.

2014-01-01

367

Mössbauer Study of Ceramic Finds from the Galería de las Ofrendas, Chavín de Huántar  

NASA Astrophysics Data System (ADS)

Ceramic finds from the Galería de las Ofrendas at Chavín de Huántar and surface finds from the settlement of Chavín were characterised by combining the results of archaeological typology with archaeometric studies using neutron activation analysis, Mössbauer spectroscopy, X-ray diffraction and thin-section microscopy. Sherds from the pyramid Tello are included in the study as representative of local material. The analyses show that the vessels were made from different raw materials and that different firing procedures were used in their production. Sherds of certain styles largely exhibit similar types of Mössbauer patterns and in many instances also have similar element compositions. This supports the archaeological notion that the vessels were brought to Chavín from the provinces, perhaps on the occasion of a festivity.

Lumbreras, L. G.; Gebhard, R.; Häusler, W.; Kauffmann-Doig, F.; Riederer, J.; Sieben, G.; Wagner, U.

2003-09-01

368

The Universe on Very Large Scales: A View from the Las Campanas Redshift Survey  

E-print Network

The Las Campanas Redshift Survey (LCRS) is among the first galaxy redshift surveys to sample a reasonably fair volume of the local Universe. On the largest scales (>> 100/h Mpc), the galaxy distribution appears smooth; on relatively small scales (<10/h Mpc), the LCRS tends to confirm the clustering characteristics observed in previous, shallower surveys. Here, however, we concern ourselves primarily with clustering on scales near the transition to homogeneity (50-200/h Mpc). We conclude that the general evidence tends to support enhanced clustering on ~ 100/h Mpc scales, but that this result should be confirmed with additional analyses of the LCRS dataset (especially 2D analyses) and with investigations of new and upcoming large-scale surveys covering different regions and/or having different selection effects.

D. L. Tucker; H. Lin; S. Shectman

1999-02-01

369

The study of ozone variations in the Las Vegas metropolitan area using remote sensing information and ground observations  

USGS Publications Warehouse

Urban development in the Las Vegas Valley, Nevada, has grown rapidly in the past fifty years. Associated with this growth has been a change in landscape from natural cover types to developed urban land mixed with planned vegetation canopy throughout in the metropolitan area. Air quality in the Las Vegas Valley has been affected by increases in anthropogenic emissions and concentrations of carbon monoxide, ozone, and criteria pollutants of particular matter. Ozone concentration in the region is generally influenced by synoptic and mesoscale meteorological conditions, as well as regional transport of pollutants from the western side of Las Vegas. Local influences from ground-level nitrogen oxide emissions and vegetation canopy coverage also affect ozone concentration. Multi-year observational data collected by a network of local air monitoring stations in Clark County, Nevada, indicate that ozone maximums develop in May and June, while minimums exist primarily from November to February. Ozone concentrations are high on the west and northwest sides of the valley. A nighttime ozone reduction in the urban area characterizes the heterogeneous features of spatial distribution for average ozone levels in the Las Vegas urban area. The urban vegetation canopy has a locally positive effect by reducing ozone in urban areas. Decreased ozone levels associated with increased urban development density suggests that the highest ozone concentrations are associated with medium- to low-density urban development in Las Vegas.

Xian, G.; Crane, M.

2006-01-01

370

Perchlorate uptake by salt cedar (Tamarix ramosissima) in the Las Vegas wash riparian ecosystem.  

PubMed

Perchlorate ion (ClO4-) has been identified in samples of dormant salt cedar (Tamarix ramosissima) growing in the Las Vegas Wash. Perchlorate is an oxidant, but its reduction is kinetically hindered. Concern over thyroid effects caused the Environmental Protection Agency (EPA) to add perchlorate to the drinking water Contaminant Candidate List (CCL). Beginning in 2001, utilities will look for perchlorate under the Unregulated Contaminants Monitoring Rule (UCMR). In wood samples acquired from the same plant growing in a contaminated stream, perchlorate concentrations were found as follows: 5-6 microg g(-1) in dry twigs extending above the water and 300 microg g(-1) in stalks immersed in the stream. Perchlorate was leached from samples of wood, and the resulting solutions were analyzed by ion chromatography after clean-up. The identification was confirmed by electrospray ionization mass spectrometry after complexation of perchlorate with decyltrimethylammonium cation. Because salt cedar is regarded as an invasive species, there are large scale programs aimed at eliminating it. However, this work suggests that salt cedar might play a role in the ecological distribution of perchlorate as an environmental contaminant. Consequently, a thorough investigation of the fate and transport of perchlorate in tamarisks is required to assess the effects that eradication might have on perchlorate-tainted riparian ecosystems, such as the Las Vegas Wash. This is especially important since water from the wash enters Lake Mead and the Colorado River and has the potential to affect the potable water source of tens of millions of people as well as irrigation water used on a variety of crops, including much of the lettuce produced in the USA. PMID:10902849

Urbansky, E T; Magnuson, M L; Kelty, C A; Brown, S K

2000-07-10

371

Characterization of stormwater discharges from Las Flores Industrial Park, Rio Grande, Puerto Rico, 1998-99  

USGS Publications Warehouse

Stormwater discharges from Las Flores Industrial Park, Rio Grande, Puerto Rico, were characterized from June 1998 to July 1999 by measuring the flow rate at two outfalls, delineating the drainage areas for each outfall, and calculating the volume of the stormwater discharges. Stormwater-discharge samples were collected and analyzed to determine the quality of the discharges. Constituent loads and loads per area were estimated for each drainage area. The studied drainage subareas covered approximately 46 percent of the total area of the Las Flores Industrial Park. Industrial groups represented in the study areas include manufacturers of textile, electronics, paper, fabricated metal, plastic, and chemical products. The concentrations of oil and grease (1 to 6 milligrams per liter), biochemical oxygen demand (4.7 to 16 milligrams per liter), total organic carbon (5.8 to 36 milligrams per liter), total suspended solids (28 to 100 milligrams per liter), and total phosphorous (0.11 to 0.78 milligrams per liter) from all the samples collected were less than the U.S. Environmental Protection Agency stormwater benchmark concentrations. Concentrations of chemical oxygen demand (15.8 to 157 milligrams per liter) and nitrate and nitrite (0.06 to 1.75 milligrams per liter) exceeded benchmark concentrations at one of the studied drainage areas. Total Kjeldahl nitrogen concentrations (1.00 to 3.20 milligrams per liter) exceeded the benchmark concentrations at the two studied drainage areas. Maximum concentrations for oil and grease, biochemical oxygen demand, chemical oxygen demand, total organic carbon, total Kjeldahl nitrogen, nitrate plus nitrite, and total phosphorous were detected in an area where electronics, plastics, and chemical products are currently manufactured. The maximum concentration of total suspended solids was detected at an area where textile, paper, plastic, chemical, and fabricated metal products are manufactured.

Rodriguez, Jose M.

2000-01-01

372

A design for a new catalog manager and associated file management for the Land Analysis System (LAS)  

NASA Technical Reports Server (NTRS)

Due to the larger number of different types of files used in an image processing system, a mechanism for file management beyond the bounds of typical operating systems is necessary. The Transportable Applications Executive (TAE) Catalog Manager was written to meet this need. Land Analysis System (LAS) users at the EROS Data Center (EDC) encountered some problems in using the TAE catalog manager, including catalog corruption, networking difficulties, and lack of a reliable tape storage and retrieval capability. These problems, coupled with the complexity of the TAE catalog manager, led to the decision to design a new file management system for LAS, tailored to the needs of the EDC user community. This design effort, which addressed catalog management, label services, associated data management, and enhancements to LAS applications, is described. The new file management design will provide many benefits including improved system integration, increased flexibility, enhanced reliability, enhanced portability, improved performance, and improved maintainability.

Greenhagen, Cheryl

1986-01-01

373

Paleoslope, sea-level and climate controls on Upper Miocene platform evolution, Las Negras area, southeastern Spain  

USGS Publications Warehouse

Carbonate platforms in the Las Negras area evolved from onlapping ramps to fringing reef complexes later draped by cyclic shallow marine strata. Although sea-level history and paleoclimate had an effect on platform evolution, substrate topography played a dominant role. The strata are divided into five depositional sequences of Tortonian and Messinian age. The model of platform evolution provided by the Las Negras area exposures likely has applications for other Miocene carbonate complexes in the Mediterranean and could apply to other carbonate complexes in the rock record.

Franseen, E.K.; Goldstein, R.H.

1996-01-01

374

Evaluating Water Supply and Water Quality Management Options for Las Vegas Valley  

NASA Astrophysics Data System (ADS)

The ever increasing population in Las Vegas is generating huge demand for water supply on one hand and need for infrastructure to collect and treat the wastewater on the other hand. Current plans to address water demand include importing water from Muddy and Virgin Rivers and northern counties, desalination of seawater with trade- payoff in California, water banking in Arizona and California, and more intense water conservation efforts in the Las Vegas Valley (LVV). Water and wastewater in the LVV are intrinsically related because treated wastewater effluent is returned back to Lake Mead, the drinking water source for the Valley, to get a return credit thereby augmenting Nevada's water allocation from the Colorado River. The return of treated wastewater however, is a major contributor of nutrients and other yet unregulated pollutants to Lake Mead. Parameters that influence the quantity of water include growth of permanent and transient population (i.e., tourists), indoor and outdoor water use, wastewater generation, wastewater reuse, water conservation, and return flow credits. The water quality of Lake Mead and the Colorado River is affected by the level of treatment of wastewater, urban runoff, groundwater seepage, and a few industrial inputs. We developed an integrated simulation model, using system dynamics modeling approach, to account for both water quantity and quality in the LVV. The model captures the interrelationships among many variables that influence both, water quantity and water quality. The model provides a valuable tool for understanding past, present and future pathways of water and its constituents in the LVV. The model is calibrated and validated using the available data on water quantity (flows at water and wastewater treatment facilities and return water credit flow rates) and water quality parameters (TDS and phosphorus concentrations). We used the model to explore important questions: a)What would be the effect of the water transported from the northern counties on the water supply and water quality of Lake Mead? b)What would be the impact of increased reuse of wastewater on return credits? c)What would be the effect of treating runoff water on the load of nutrients to Lake Mead?

Ahmad, S.

2007-05-01

375

Acritarchs of Las Ventanas Formation (Ediacaran, Uruguay): Implications for the timing of coeval rifting and glacial events in western Gondwana  

Microsoft Academic Search

Acritarchs and other organic-walled microfossils occurring in siltstones of the Las Ventanas Formation (Quebrada de Viera and El Perdido members) are systematically described and illustrated. The assemblage includes the following species: Leiosphaeridia tenuissima, Leiosphaeridia minutissima, Lophosphaeridium sp., Soldadophycus bossii, Soldadophycus major, Soldadophycus sp. and Vendotaenia antiqua. The microflora is characterized by low diversity (six species), dominance of L. tenuissima, absence

Claudio Gaucher; Gonzalo Blanco; Leticia Chiglino; Daniel Poiré; Gerard J. B. Germs

2008-01-01

376

PROPUESTA DE ACCIONES PARA SOLUCIONAR LAS DEFICIENCIAS EN CUANTO AL CONTROL DE LOS ACTIVOS FIJOS TANGIBLES EN CUBA  

Microsoft Academic Search

En el presente trabajo se realiza una amplia descripción sobre los activos fijos tangibles en Cuba donde se establece una clasificación de los mismos que de forma general se establece la siguiente: otras construcciones, que incluyen los tanques. Maquinas y equipos energéticos: que incluyen los grupos electrógenos, las turbinas. Aparatos y equipos técnicos especiales: que incluyen los equipos médicos, eléctricos,

Alexis López Clemente; Dauvildo Hurtado Beltrán; Nancy Jiménez González

2012-01-01

377

Escasas Evidencias de las Bacterias Lácticas del Yo gur en Heces Humanas tras Consumo Diario de Yogur en Voluntarios Sanos  

Microsoft Academic Search

10 yogur (15 días) en 114 voluntarios sanos. Las técni cas empleadas han sido cultivos microbiológico clásicos, PCR con cebadores específi cos para estas bacterias e hibridación de ADN con sondas específicas. El diseño del estudio fue prospectivo y de doble ciego. Se obtuvieron resultados consistenteme nte negativos en los cultivos microbiológicos, así como en la detección específic a del

Rosa del Campo; Daniel Bravo; Rafael Cantón; Patricia Ruiz-Garbajosa; Raimundo García-Albiach; Alejandra Montesi-Libois; Francisco-Javier Yuste; Victor Abraira; Fernando Baquero

378

CATALOGO ILUSTRADO DE LOS MELOIDAE (COLEOPTERA) DE NICARAGUA Y OTRAS ESPECIES CONTENIDAS EN LAS COLECCIONES DEL MUSEO ENTOMOLOGICO DE LEON  

Microsoft Academic Search

Se conocen alrededor de 3000 especies de Meloidae a nivel mundial. Los Meloidae son en general alargados, de elitros blandos. El pronoto es más estrecho que la cabeza y más estrecho que los élitros, lo que le da una forma muy caracteristica. Miden de 10 a 40 mm. Algunos Meloidae adultos son plagas menores de cultivos, algunos Epicauta comen las

Por Jean-Michel MAES; Jeffrey P. HUETHER

379

FUNDAMENTOS PARA UNA PROPUESTA INFORMÁTICA DEL PROCESO DE ENSEÑANZA APRENDIZAJE DE ECOLOGÍA EN CIENCIAS AGROPECUARIAS DE LAS SUM  

Microsoft Academic Search

La pedagogía contemporánea considera que una buena manera de optimizar la enseñanza es la activación del proceso cognoscitivo de los estudiantes mediante la utilización de métodos activos y las potencialidades que brinda la tecnología educativa y dentro de ella, la informática. La presente investigación se desarrolló en la Sede Universitaria Municipal “Mario Rodríguez Alemán” de Sagua la Grande, donde se

Alejandro Sueiro Garra

2010-01-01

380

La efectividad de las redes de protección social: El rol de los sistemas integrados de información social en Brasil  

Microsoft Academic Search

Este trabajo forma parte de una serie de estudios realizados en el marco del proyecto “La efectividad de las redes de protección social: El rol de los sistemas integrados de información social”. Los estudios de caso fueron realizados en el período 2007-08. Se agradecen los comentarios de Amélia Cohn, Lúcia Maria Modesto Pereira y Paulo de Martino Jannuzzi. El texto

Leticia Bartholo; Ricardo Rodrigues Dutra

2011-01-01

381

San Juan, Puerto Rico -Jueves 07 Diciembre 2006. Actualizado a las 12:45:28 PM Investigarn del  

E-print Network

endi.com San Juan, Puerto Rico - Jueves 07 Diciembre 2006. Actualizado a las 12:45:28 PM Blasini en el concurso Miss Puerto Rico Universe 2007? Era la mejor candidata Habían otras más bellas e $15 millones para ese pueblo anualmente. El Observatorio opera en Puerto Rico desde 1963 y es visitado

382

San Juan, Puerto Rico -Jueves 07 Diciembre 2006. Actualizado a las 8:39:48 PM LTIMO COMENTARIO  

E-print Network

endi.com San Juan, Puerto Rico - Jueves 07 Diciembre 2006. Actualizado a las 8:39:48 PM ÚLTIMO radiotelescopio más grande del mundo, tiene un valor científico más allá de Puerto Rico, por lo que amerita que el Puerto Rico, como ese observatorio en Arecibo que permite el intercambio de conocimiento en áreas

383

Caesars Hospitality Research Summit, June 8-10, 2011 Stan Fulton Building, University of Nevada, Las Vegas  

E-print Network

Caesars Hospitality Research Summit, June 8-10, 2011 Stan Fulton Building, University of Nevada, Las Vegas You are cordially invited to "Industry Day," Thursday, June 9 at the Caesars Hospitality, Linq360 · Katrina Lane, Senior VP & CTO, Caesars Entertainment, Inc. · Jason

Ahmad, Sajjad

384

ANÁLISIS FINANCIERO A TRAVÉS DE TENDENCIAS DE INDICADORES SELECCIONADOS EN LA EMPRESA DE MATERIALES DE CONSTRUCCIÓN DE LAS TUNAS  

Microsoft Academic Search

En el presente trabajo fue desarrollado en la Empresa de Materiales de Construcción de Las Tunas y responde a la necesidad de aplicar la técnica del análisis de tendencia a índices importantes como son liquidez y endeudamiento. El resultado del mismo le va a aportar a la dirección de la empresa elementos que le permitan realizar una oportuna toma de

Mayelín Ramírez Santo; Alina Alonso de Quezada; Teresa Acosta García

2010-01-01

385

Developing Fieldwork in Social and Cultural Geography: Illustrations from a Residential Field Class in Los Angeles and Las Vegas.  

ERIC Educational Resources Information Center

Argues that fieldwork develops student understanding of various concerns in social and cultural geography. Recommends using a new approach that focuses on the role of fieldwork in the research process and illustrates this approach by describing an account of a residential field class to Los Angeles (California) and Las Vegas (Nevada). (CMK)

May, Jon

1999-01-01

386

Cómo interpretar los números: lo que verdaderamente nos dicen las estadísticas de los exámenes de detección del cáncer  

Cancer.gov

Los estudios sobre los exámenes de detección del cáncer han mostrado que la realización de una mayor cantidad de exámenes no se traduce necesariamente en un menor número de muertes por cáncer. Este artículo explica cómo interpretar las estadísticas utilizadas para describir los resultados de los exámenes de detección.

387

Intelligent marketing strategies for the Hard Rock Hotel and Casino, Las Vegas; market segmentation and customer analysis  

Microsoft Academic Search

The Hard Rock Hotel & Casino (HRHC) in Las Vegas, NV hopes to implement customer relationship management (CRM) strategies to increase overall customer value. This paper discusses our process of analyzing historical customer data and creating incentives tests in order to create accurate and useful customer segments. These customer segments can be used to target customers based on their interests,

Leah M. Churinske; Taylor Lee; Nivaan Linhares; Selenge Turbat; Francesca Wolf; W. T. Scherer

2010-01-01

388

Tecnofobia como déficit formativo : investigando la integración curricular de las TIC en centros públicos de ámbito rural y urbano  

Microsoft Academic Search

Las TIC son la parte más activa y conocida de la denominada sociedad de la información, que comienza a configurarse y a abrirse paso ininterrumpidamente en todos los ámbitos sociales. Por tanto, también se ha visto involucrada la educación en todos sus sentidos, teniendo que trabajar no sólo con el alumnado, sino también con el colectivo docente. Este artículo, que

Juan Antonio Fuentes Esparrell; José Antonio Ortega Carrillo; Manuel Lorenzo Delgado

2006-01-01

389

Cooperar para aprender. La cooperación en las redes sociales desde el enfoque de la teoría de la elección racional 1  

Microsoft Academic Search

El presente artículo se puede leer desde dos registros distintos, pero complementarios. Por un lado se trata de un primer intento de utilizar el análisis de un caso empírico para fijar las primeras bases de un modelo con el que explicar el comportamiento estratégico de los estudiantes que toman parte en procesos de educación en formato e-learning. El uso intensivo

José Ignacio Porras; Thomas Hardy

390

Las tecnologías de la información y la comunicación en la educación superior. Estudio descriptivo y de revisión  

Microsoft Academic Search

La presente aportación ha sido desarrollada con la información recabada en el transcurso de la investigación titulada Integración de las Tecnologías de la Información y la Comunicación en la Educación Superior, financiada por la Junta de Castilla y León a través de la orden EDU\\/1160\\/2008, de 26 de junio, por la que se resuelve la convocatoria pública de ayudas del

Roberto Baelo Álvarez; Isabel Cantón Mayo

2009-01-01

391

What Happens in Vegas Does "Not" Stay in Vegas: Youth Leadership in the Immigrant Rights Movement in Las Vegas, 2006  

ERIC Educational Resources Information Center

Students calling themselves the Las Vegas Activist Crew shut down the city's famed Strip on May 1, 2006, with an immigrant rights protest that was one of the largest demonstrations in Nevada's history. This research analyzes the ways that students engage in activism to improve their own social conditions and those of their communities. The…

Revilla, Anita Tijerina

2012-01-01

392

Paper presented at the International Society of Logistics (SOLE) 1999 Symposium, Las Vegas, Nevada, August 30 September 2, 1999.  

E-print Network

Paper presented at the International Society of Logistics (SOLE) 1999 Symposium, Las Vegas, Nevada of the operational prototype and assesses potential maintenance and logistics implications of the technology technology promises to improve logistics and maintenance processes by enabling reductions in maintenance

393

Abstract--Las metodologas de expansin se sostienen bajo principios de cooperacin y bajo este principio se han propuesto  

E-print Network

el beneficio social y la representación de This work was supported in part by Conicyt-Programa en Energías 2010, Pontificia Universidad Católica de Chile, Fondecyt, Mecesup (2), Transelec. J. D. Molina is at Systep Ingeniería y Diseños S.A., Don Carlos #2939, Of. 1007, Las Condes, Santiago, Chile (email

Catholic University of Chile (Universidad Católica de Chile)

394

Visión de un científico oncólogo que aplica la investigación a la salud humana a través de las fronteras  

Cancer.gov

El doctor Jorge Gómez es el asesor principal del Centro para la Salud Mundial del Instituto Nacional del Cáncer. Dirige la Red de Investigación del Cáncer de los Estados Unidos y América Latina, la cual está realizando un estudio internacional de los factores de riesgo del cáncer de mama y características en las mujeres de América Latina.

395

Análisis de las economías de escala y alcance en los servicios de acueducto y alcantarillado en Colombia  

Microsoft Academic Search

Una de las principales características del sector de acueducto y alcantarillado en Colombia es el alto nivel de atomización en la prestación de tales servicios. Este nivel es el resultado de los procesos de descentralización de fines de la década de los ochenta y los cambios implementados en los noventa, que modificaron el esquema de prestación al pasar de un

Daniel Revollo; Giovanna Londoño

2010-01-01

396

Servicio Universal en el proceso de privatización de las empresas de telecomunicaciones y agua potable y alcantarillado en el Paraguay  

Microsoft Academic Search

En este reporte, en primer lugar, se presenta un diagnóstico de la reforma de los sectores de telecomunicaciones y agua potable en Paraguay, que sirve para delinear algunos de los problemas que han surgido durante este proceso, basado sobre indicadores de eficiencia, productividad, calidad y situación financiera. En segundo lugar, se enuncia una serie de medidas correspondientes a resolver las

Carlos Romero

2010-01-01

397

¿Son las políticas locales una buena estrategia para dinamizar el mercado de trabajo? Algunos elementos para el caso colombiano  

Microsoft Academic Search

Resumen: En períodos de bajo crecimiento económico, tiempos de recesión o crisis económica, implementar una política fiscal contra-cíclica puede ser una herramienta fundamental para crear empleo y dinamizar la economía. En Colombia, específicamente en las principales ciudades del país existe una posibilidad concreta para que los gobiernos locales, a través de incrementos del gasto de inversión, impacten positivamente en la

Diana Galvis G; Mauricio López Gonzalez

2010-01-01

398

Ambient air monitoring during the 2011 Las Conchas wildland fire near Los Alamos, U.S.A.  

SciTech Connect

Air monitoring data collected during the Las Conchas fire near the Los Alamos National Laboratory during 2011 are presented. Data included are for selected radionuclides and selected metals found in particulate matter. None of these analytes were seen at levels which exceeded any state or federal standards.

Green, Andrew A. [Los Alamos National Laboratory; Schlemann, Shea A. [Los Alamos Technical Associates; Young, Daniel L. [Los Alamos National Laboratory

2012-08-31

399

Variables explicativas de la ansiedad frente a las matemáticas: un estudio de una muestra de 6º de primaria  

Microsoft Academic Search

En el presente artículo se aborda el estudio de la ansiedad frente a las matemáticas en un grupo de 55 alumnos de sexto de primaria. Se analiza la correlación de esta variable con el rendimiento en matemáticas, con la ansiedad estado y la ansiedad rasgo, con el género y con la representación que los niños se hacen sobre sus habilidades

Begoña Tejedor; María Auxiliadora Santos; Javier García-Orza; Patricia Carratalà; Marta Navas

2009-01-01

400

Integrated geophysical methods for studying the karst system of Gruta de las Maravillas (Aracena, Southwest Spain)  

NASA Astrophysics Data System (ADS)

In this study we contrast the results of different geophysical methods in order to describe the karst system surrounding of the Gruta de las Maravillas cave (Aracena, Spain). A comprehensive study of the geophysical responses of the known cavity was carried out, after which several sections were studied to detect the karst architecture and cave continuity. To ensure precision, the inner 3D-topography of the cave was determined by classical geodetic techniques and a digital terrain model was performed with differential GPS. The microgravity method was used to obtain the residual gravity map of the entire study zone, whose minima could be related to caves. Then, the negative gravity anomalies were analyzed to plan several lines for implementing further geophysical methods: magnetic profiles (MP), electrical resistivity tomography (ERT), induced polarization (IP), 2D seismic prospection (refraction tomography and reflection sections) and ground penetrating radar (GPR). The resulting models for each line explored were integrated with detailed geological maps to establish the unknown continuity of the caves. Finally, we discuss the suitability of each geophysical technique for cave detection in marble with sulfur host rock and propose the best procedures to constrain their geometries.

Martínez-Moreno, F. J.; Galindo-Zaldívar, J.; Pedrera, A.; Teixido, T.; Ruano, P.; Peña, J. A.; González-Castillo, L.; Ruiz-Constán, A.; López-Chicano, M.; Martín-Rosales, W.

2014-08-01

401

Aldehyde and monocyclic aromatic hydrocarbon mixing ratios at an urban site in Las Vegas, Nevada.  

PubMed

Oxidation of benzene, toluene, ethylbenzene, and xylenes (BTEX) in air, of significance due to, for example, the potential for O3 formation, is believed to be initiated by OH attack on the ring (addition) or on the alkyl side chain (H abstraction). A series of ring-breaking reactions follows, with major products predicted to be alpha-dicarbonyls, simple aldehydes, and organic acids. To test this prediction, ambient air mixing ratios of aldehydes (formaldehyde, acetaldehyde, benzaldehyde, glyoxal, and pyruvaldehyde), along with some supporting BTEX data, were measured at an urban site in Las Vegas, NV. Samples were collected on sorbents and determined by chromatographic methods; mixing ratios were compared to ambient levels of CO, O3, and NOx. A meteorological analysis (temperature, wind speed, and wind direction) was also included. Statistically significant relationships were noted among the BTEX hydrocarbons (HCs) and among the photochemically derived species (e.g., O3, NO2, and some of the aldehydes), although there was seasonal variation. The observations are consistent with a common primary source (i.e., vehicular exhaust or fuel evaporation) for the BTEX compounds and a common secondary source (e.g., OH attack) for glyoxal and pyruvaldehyde. PMID:11575890

Jing, L; Steinberg, S M; Johnson, B J

2001-09-01

402

Targeting Planetary Anomalies in Microlensing Events with the Las Cumbres Observatory Global Telescope Network  

NASA Astrophysics Data System (ADS)

By the nature of these transient, non-repeating phenomena, observing microlensing events requires a fast, responsive system of telescopes distributed over a range of longitudes. The Las Cumbres Observatory Global Telescope Network currently consists of the 2m Faulkes Telescopes North and South. Over the course of the next few years LCOGT will expand this network to a complement of 44, including 2x2m, 18x1m and 24x0.4m which will be sited in clusters of 3-4 telescopes such that at least one site is in the dark at any given time, enabling us to provide 24hr coverage of any transient event. The telescopes are controlled via a robotic scheduler, allowing a fast response to alerts from eStar or other robotic agents or to manual override. Both 2m telescopes have been engaged in robotically-controlled follow-up of 222 OGLE and MOA alerts during the 2007 Bulge season and intensive observations of 2 events displaying clear anomalies. We summarise here the results to date.

Street, Rachel; RoboNet Microlensing Team

2007-12-01

403

Nuevos escenarios de la migración México-Estados Unidos. Las consecuencias de la guerra antiinmigrante  

PubMed Central

La historia de la migración México-Estados Unidos se caracteriza por una serie de periodos durante los cuales los patrones migratorios se transforman y evolucionan como respuesta a los cambios en la política migratoria de Estados Unidos. En la década de 1990 se dio uno de estos cambios, lo que provocó el paso de la ‘era de la contradicción’ a la ‘era de la marginalización’. Actualmente, un gran número de migrantes indocumentados permanecen al margen de la ley, precisamente en un periodo en el que las penas se han incrementado y la persecución ha alcanzado niveles récord. De manera cada vez más notoria, los migrantes indocumentados, por la represión interna y fronteriza, quedan obligados a romper los lazos que los vinculaban con sus lugares de destino, pero al mismo tiempo se sienten cada vez más extraños en una tierra donde la aplicación de políticas antiinmigrantes es cosa de todos los días, lo que los sitúa en una posición de marginalización y gran vulnerabilidad. PMID:21209790

MASSEY, Douglas S.; PREN, Karen A.; DURAND, Jorge

2010-01-01

404

Fueling Population Growth in Las Vegas: How Large-scale Groundwater Withdrawal Could Burn Regional Biodiversity  

NSDL National Science Digital Library

This article from the September 2007 issue of BioScience provides information about urban development and the impacts on groundwater and biodiversity. Policy strategies are also discussed. Explosive growth in Las Vegas, Nevada, has stimulated demand for additional water supplies. To meet these needs, local officials hope to obtain rights to about 200,000 acre-feet (246.70 million cubic meters [m3]) per year from a regional groundwater aquifer extending from Salt Lake City, Utah, to Death Valley, California. Officials from satellite communities are pursuing rights to an additional 870,487 acre-feet (1.07 billion m3) per year. If granted, these new permits would trigger declines in groundwater across at least 78 basins covering nearly 130,000 square kilometers. Water-rights decisions have historically interpreted economic development as a more compelling public interest than maintenance of natural systems. If economic development continues to drive allocation decisions, consequent declines in the water table, spring discharge, wetland area, and streamflow will adversely affect 20 federally listed species, 137 other water-dependent endemic species, and thousands of rural domestic and agricultural water users in the region. Reducing consumption and implementing cost-effective technologies, such as recovery of urban runoff and shallow saline groundwater, indirect reuse of potable water, and desalinization, offer ways to meet metropolitan and ecological needs within the limits of the resource.

JAMES E. DEACON, AUSTIN E. WILLIAMS, CINDY DEACON WILLIAMS, JACK E. WILLIAMS (; )

2007-09-01

405

Indicator pathogens, organic matter and LAS detergent removal from wastewater by constructed subsurface wetlands  

PubMed Central

Background Constructed wetland is one of the natural methods of municipal and industrial wastewater treatments with low initial costs for construction and operation as well as easy maintenance. The main objective of this study is to determine the values of indicator bacteria removal, organic matter, TSS, ammonia and nitrate affecting the wetland removal efficiency. Results The average concentration of E. coli and total coliform in the input is 1.127?×?1014 and 4.41?×?1014 MPN/100 mL that reached 5.03?×?1012 and 1.13?×?1014 MPN/100 mL by reducing 95.5% and 74.4% in wetland 2. Fecal streptococcus reached from the average 5.88?×?1014 in raw wastewater to 9.69?×?1012 in the output of wetland 2. Wetland 2 could reduce 1.5 logarithmic units of E. coli. The removal efficiency of TSS for the wetlands is 68.87%, 71.4%, 57.3%, and 66% respectively. Conclusions The overall results show that wetlands in which herbs were planted had a high removal efficiency about the indicator pathogens, organic matter, LAS detergent in comparison to a control wetland (without canes) and could improve physicochemical parameters (DO, ammonia, nitrate, electrical conductivity, and pH) of wastewater. PMID:24581277

2014-01-01

406

Human-health pharmaceutical compounds in Lake Mead, Nevada and Arizona, and Las Vegas Wash, Nevada, October 2000-August 2001  

USGS Publications Warehouse

The U.S. Geological Survey and the National Park Service conducted a reconnaissance study to investigate the occurrence of selected human-health pharmaceutical compounds in water samples collected from Lake Mead on the Colorado River and Las Vegas Wash, a waterway used to transport treated wastewater from the Las Vegas metropolitan area to Lake Mead. Current research indicates many of these compounds can bioaccumulate and may adversely affect aquatic organisms by disrupting physiological processes, impairing reproductive functions, increasing cancer rates, contributing to the development of antibiotic-resistant strains of bacteria, and acting in undesirable ways when mixed with other substances. These compounds may be present in effluent because a high percentage of prescription and non-prescription drugs used for human-health purposes are excreted from the body as a mixture of parent compounds and degraded metabolite compounds; also, they can be released to the environment when unused products are discarded by way of toilets, sinks, and trash in landfills. Thirteen of 33 targeted compounds were detected in at least one water sample collected between October 2000 and August 2001. All concentrations were less than or equal to 0.20 micrograms per liter. The most frequently detected compounds in samples from Las Vegas Wash were caffeine, carbamazepine (used to treat epilepsy), cotinine (a metabolite of nicotine), and dehydronifedipine (a metabolite of the antianginal Procardia). Less frequently detected compounds in samples collected from Las Vegas Wash were antibiotics (clarithromycin, erythromycin, sulfamethoxazole, and trimethoprim), acetaminophen (an analgesic and anti-inflammatory), cimetidine (used to treat ulcers), codeine (a narcotic and analgesic), diltiazem (an antihypertensive), and 1,7-dimethylxanthine (a metabolite of caffeine). Fewer compounds were detected in samples collected from Lake Mead than from Las Vegas Wash. Caffeine was detected in all samples collected from Lake Mead. Other compounds detected in samples collected from Lake Mead were acetaminophen, carbamazepine, cotinine, 1,7-dimethylxanthine, and sulfamethoxazole.

Boyd, Robert A.; Furlong, Edward T.

2002-01-01

407

Evapotranspiration of Mixed Shrub Communities in Phreatophytic Zones of the Great Basin D.A. Devitt1, L.K. Fenstermaker2, M. Young2, B. Conrad1 and B. Bird1 1 School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV 2 Desert Research Institute, Las Vegas, NV  

Microsoft Academic Search

Water limitations in the arid and semiarid regions of the southwestern United States have led many water managers of municipalities to begin the process of diversifying their water resource portfolios. Las Vegas in particular, is pursuing groundwater exportation from east central basins in Nevada. Estimating evapotranspiration (ET) is a critical component to closing hydrologic balances in these basins. As such,

D. A. Devitt; L. K. Fenstermaker; M. Young; B. Conrad; B. Bird

2009-01-01

408

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

SciTech Connect

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

BECHTEL NEVADA

2004-07-01

409

Study of the feline and canine populations in the greater Las Vegas area.  

PubMed

Analysis of household dogs and cats, based on age-distribution data and on age-specific birth and survival rates, as well as on pet source, indicated that the dog and cat populations are stable and not increasing in size (lambda congruent to 1). Roaming dogs and cats euthanatized at the pound represented about 5.7% and 8.1% of the estimated dog and cat populations, respectively. The death at the pound seems to be effective in checking pet population growth. Among pets acquired, 84% were less than 1 year of age for dogs as compared with 88% for cats. Breeders and pet shops supplied about 7% of cats and 17% of dogs. About 10% of cats and 10% of dogs were acquired at the pound, while 6.4% of dogs and 14% of cats were acquired as stray. About 45% of dogs and 41% of cats were acquired from pet owners. Some dogs (12.46%) and cats (12%) were imported from outside the Las Vegas area. Of dogs and cats below 2 months of age, 33% and 19.5%, respectively, came from breeders or pet shops or were imported from outside the area. Seventeen percent of unspayed female dogs and 16% of unspayed female cats reproduced. The percentages of spayed females were 77 for dogs and 86 for cats. Forty-five percent of the dogs and 48% of the cats were males. Among dogs at the shelter, 2% were neutered and 26% spayed. At the pound, 24% of dogs were small breeds, 24% medium size breeds, and 52% large breeds.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:6711951

Nassar, R; Mosier, J E; Williams, L W

1984-02-01

410

Flow and transport at the Las Cruces trench site: Experiment IIb  

SciTech Connect

The US Nuclear Regulatory Commission (NRC) has been directed by Congress in the Low Level Waste Policy Act of 1980 to develop regulatory guidance and assist the individual states and compacts in siting and assessing future low level radioactive waste (LLW) disposal facilities. Three water flow and solute transport experiments were performed as part of a comprehensive field trench study near Las Cruces, New Mexico to test deterministic and stochastic models of vadose zone flow and transport. This report presents partial results from the third experiment (experiment IIb). Experiments IIa and b were conducted on the North side of the trench, on a plot 1.22 m wide by 12 m long, perpendicular to the trench. The area was drip irrigated during two time periods with water containing a variety of tracers. The advance of the water front during the two irrigation episodes was measured with tensiometers and neutron probes. Solute front positions were determined from soil solution sampling through suction samplers and from disturbed sampling. The results from experiment IIb show predominantly downward water movement through the layered unsaturated soil, as evidenced from neutron probe data and gravimetric sampling. Tritium plumes were only half as deep and half as wide as the water plumes at 310 days after the beginning of experiment IIb. Chromium, applied as Cr(VI), moved a readily as, and similar to tritium, but there was a loss of mass due to reduction of Cr(VI) to Cr(III). Chloride and nitrate, initially present at high concentrations in the soil solution, were displaced by the low concentration irrigation water, resulting in chloride and nitrate concentration distributions that looked like negative images of the tritium distributions. The extensive data presented should serve well as a data base for model testing.

Vinson, J.; Hills, R.G. [New Mexico State Univ., Las Cruces, NM (United States); Wierenga, P.J.; Young, M.H. [Arizona Univ., Tucson, AZ (United States). Dept. of Soil and Water Science

1997-07-01

411

Site Response in Las Vegas Valley, Nevada from NTS Explosions and Earthquake Data  

NASA Astrophysics Data System (ADS)

We report site response in Las Vegas Valley (LVV) from historical recordings of Nevada Test Site (NTS) nuclear explosions and earthquake recordings from permanent and temporary seismic stations. Our data set significantly improves the spatial coverage of LVV over previous studies, especially in the northern, deeper parts of the basin. Site response at stations in LVV was measured for frequencies in the range 0.2 5.0 Hz using Standard Spectral Ratios (SSR) and Horizontal-Vertical Spectral Ratios (HVR). For the SSR measurements we used a reference site (approximately NEHRP B ``rock'' classification) located on Frenchman Mountain outside the basin. Site response at sedimentary sites is variable in LVV with average amplifications approaching a factor of 10 at some frequencies. We observed peaks in the site response curves at frequencies clustered near 0.6, 1.2 and 2.0 Hz, with some sites showing additional lower amplitude peaks at higher frequencies. The spatial pattern of site response is strongly correlated with the reported depth to basement for frequencies between 0.2 and 3.0 Hz, although the frequency of peak amplification does not show a similar correlation. For a few sites where we have geotechnical shear velocities, the amplification shows a correlation with the average upper 30-meter shear velocities, V 30. We performed two-dimensional finite difference simulations and reproduced the observed peak site amplifications at 0.6 and 1.2 Hz with a low velocity near-surface layer with shear velocities 600 750 m/s and a thickness of 100 200 m. These modeling results indicate that the amplitude and frequencies of site response peaks in LVV are strongly controlled by shallow velocity structure.

Rodgers, Arthur; Tkalcic, Hrvoje; McCallen, David; Larsen, Shawn; Snelson, Catherine

2006-01-01

412

Proximal record of the 273 ka Poris caldera-forming eruption, Las Cañadas, Tenerife  

NASA Astrophysics Data System (ADS)

Lithofacies architecture analysis is applied to the most proximal exposures of the 273 ka Poris Formation, in the Diego Hernandez caldera wall of Las Cañadas. Here, the succession records an opening Plinian phase followed by generation of a pyroclastic density current (PDC) that was partly blocked by near-vent topography. The upper part of the current surmounted the barrier and deposited an ignimbrite veneer. During a hiatus in energetic flow, ash and various ash aggregates were deposited from a hybrid cloud comprising parts of both the Plinian and the co-ignimbrite plumes. Phreatomagmatic explosions then generated currents rich in fine-grained lithics; current waxing with local erosion was followed by pulsing-unsteady waning, recorded in repeated sets of graded tuff. Reversion to magmatic activity was marked by hybrid deposition, as coarse pumice fallout and juvenile ballistics entered pyroclastic currents to form stratified pumice-block tuff. Increasingly energetic flow is recorded in 9 m of mainly massive lapilli tuff that includes evidence of widespread scour and bypass; lithic-rich layers record incremental onset of edifice disruption due to magma withdrawal. Laterally variable stratification and load structures show that the PDC was unsteady and highly non-uniform at times, with locally rapid aggradation of gas-rich ignimbrite. Climactic edifice disruption is marked by a lithic-block layer in erosional contact with the underlying ignimbrite, recording intense pyroclastic current activity and widespread bypass of material to distal volcano slopes. Pumice-block breccia, 10 m thick and with blocks up to 1.2 m in diameter, forms the top of the succession and registers modification of the magmatic plumbing. The timing of collapse to form a major summit depression is uncertain. However, the abrupt termination of the proximal aggradation of coarse breccia, with no record there of any waning-stage pyroclastic currents, suggests subsidence at that time, conceivably with formation of a caldera that contained late-erupted material.

Smith, Natasha J.; Kokelaar, B. Peter

2013-11-01

413

Diffuse CO2 flux emissions from the soil in Las Cañadas caldera (Tenerife, Canary Islands)  

NASA Astrophysics Data System (ADS)

Starting in April 2004, unusual seismic activity was observed in the interior of the island of Tenerife (Canary Islands, Spain) with much evidence pointing to a reawakening of volcanic activity. During this seismic crisis, several events were felt by the population. Since then, a dense multiparametric monitoring network has been deployed all over the island by Instituto Geográfico Nacional (IGN). In the framework of this volcanic surveillance project, several geochemical studies have been accomplished. Measurements of diffuse CO2 flux from the soil have been carried out in some zones inside Las Cañadas caldera. This study has been performed during three different field campaigns in November 2012 and June and November 2013. The studied area includes two different zones known as Roques de García and Los Azulejos. Since several authors have reported the existence of fractures and faults all along both structures, the objectives of this work were to find anomalous CO2 fluxes from the soil and preferential degassing areas, identify possible hidden faults and study the origin of gas emanations in order to detect the presence of magmatic sources. More than 600 sampling sites have been measured with the accumulation chamber method in an area of about 1 km2. Soil gas has been sampled in points where high CO2 fluxes were detected for the determination of chemical and isotopic composition. The results of the gas prospection confirm the existence of CO2 degassing in the area. Some anomalous fluxes have been measured along previously inferred volcano-tectonic structures. The highest anomalies were found in Los Azulejos with values up to 1774 g/m2.d. Chemical analysis did not reveal significant concentrations of magmatic or geothermal gases except CO2. The latter showed concentrations at 50 cm depth within the soils up to 48% and a C-isotopic composition between -4.72 and -3.67 o indicating a prevailing magmatic origin.

Luengo-Oroz, Natividad; Torres, Pedro A.; Moure, David; D'Alessandro, Walter; Liuzzo, Marco; Longo, Manfredi; Pecoraino, Giovannella

2014-05-01

414

The Galaxy-Weighted Small-Scale Velocity Dispersion of the Las Campanas Redshift Survey  

E-print Network

The pair-weighted relative velocity dispersion of galaxies provides a measure of the thermal energy of fluctuations of the observed galaxy distribution, but the measure is difficult to interpret and is very sensitive to the existence of rare, rich clusters of galaxies. Several alternative statistical procedures have recently been suggested to relieve these problems. We apply a variant of the object-weighted statistical method of Davis, Miller, & White (1997) to the Las Campanas Redshift Survey (LCRS), which is the largest and deepest existing redshift survey that is nearly fully sampled. The derived one-dimensional dispersion on scales ~ 1 Mpc/h is quite low: sigma_1 = 126 +/- 10 km/s, with a modest decrease at larger scales. The statistic is very stable; the six independent slices of the LCRS all yield consistent results. We apply the same statistical procedure to halos in numerical simulations of an open cosmological model and flat models with and without a cosmological constant. In contrast to the LCRS, all the models show a dispersion which increases for scales > 1 Mpc/h; it is uncertain whether this is a numerical artifact or a real physical effect. The standard cluster-normalized Cold Dark Matter model with Omega_m = 1 as well as a tilted variant with n = 0.8 yield dispersions substantially hotter than the LCRS value, while models with low matter density (Omega_m = 0.3) are broadly consistent with the LCRS data. Using a filtered cosmic energy equation, we measure Omega_m ~ 0.2, with small-scale bias factors b = 1.0--1.5 for high-density models and b = 0.7--1.1 for low-density models.

Jonathan E. Baker; Marc Davis; Huan Lin

1999-09-02

415

La penetración del web corporativo y del comercio electrónico en las empresas de servicios y comercio de la ciudad de Lleida  

Microsoft Academic Search

Las nuevas tecnologías de la información y de la comunicación y en especial el sitio web corporativo y el comercio electrónico suponen una nueva oportunidad de difusión de imagen y de negocio para las empresas y comercios en una economía cada vez más global. Dentro de este marco teórico general, la ciudad de Lleida se sitúa en una posición relativamente

Jordi Millà Rufach

2007-01-01

416

Minería de datos y lógica difusa.Una aplicación al estudio de la rentabilidad económica de las empresas agroalimentarias en Andalucía  

Microsoft Academic Search

En este trabajo se estudia la rentabilidad de la empresa agroalimentaria en Andalucía (España)mediante un conjunto de ratios, elaborados por el Instituto de Estadística de Andalucía a partir de la Central de Balances de Actividades Empresariales de Andalucía. El objeto es encontrar las características contables de las empresas más rentables. Los aspectos metodológicos que se contemplan en la aplicación comprenden

BÁRBARA DÍAZ DIEZ; Antonio Morillas

2005-01-01

417

San Juan, Puerto Rico -Lunes 12 Febrero 2007. Actualizado a las 5:58:15 PM Sigue en dficit el Observatorio  

E-print Network

endi.com San Juan, Puerto Rico - Lunes 12 Febrero 2007. Actualizado a las 5:58:15 PM Sigue en de Puerto Rico anunció el lunes, como si fuera un logro, que la Fundación Nacional para las Ciencias Observatorio a la Universidad de Puerto Rico. EL NUEVO DIA Contáctenos | Noticias | Deportes | Flash | Por

418

Fractales en ciencia y arte. Discusiones posibles en el marco de las concepciones realistas y antirrealistas en la Filosofa de la Ciencia.  

E-print Network

un lado, la concepción realista de la ciencia, y un autor clave: Ian Hacking en textos clásicos certeza si tanto las entidades como las teorías, son verdaderas o falsas. Para Hacking, la realidad y la torno a fractales, como punto de encuentro entre la ciencia y el arte. Ian Hacking: Un realista muy

Paris-Sud XI, Université de

419

Habilidades matemáticas y funcionamiento ejecutivo de niños con trastorno por déficit de atención con hiperactividad y dificultades del aprendizaje de las matemáticas  

Microsoft Academic Search

A pesar de que un 26% de niños con TDAH tiene una dificultad específica en el aprendizaje de las ma- temáticas (DAM) las investigaciones han sido escasas. El presente estudio se planteó estudiar: 1) el perfil de los niños con TDAH+DAM en habilidades cognitivas y metacognitivas de cálculo y solución de problemas, en comparación con niños con TDAH, niños con

Ana Miranda Casas; Amanda Meliá de Alba; Rafaela Marco Taverner

2009-01-01

420

Pigmentocracia y medios de comunicacin en el Mxico actual: la importancia de las representaciones socio-raciales y de clase en la televisin mexicana.  

E-print Network

socio-raciales y de clase en la televisión mexicana. Jimmy Alfonso Sánchez Pérez El concepto socio-racial y de clase. En la que los rasgos fenotípicos se mostrabancomo la evidencia más directa del origen racial de las personas, lo cual al menos durante las primeras décadas de la colonia española

Boyer, Edmond

421

Análisis costo-eficiencia en la promoción de un sistema de indicadores para las empresas de servicios públicos de acueducto y alcantarillado  

Microsoft Academic Search

Orientar a los actores en materia de servicios públicos fue una tarea emprendida con la Ley 142 de 1994, que trajo modernización al escenario colombiano y con miras a establecer un mercado competitivo, donde la eficiencia y el aumento de productividad deben reflejarse en beneficios para los usuarios y las empresas mismas. El autor estudia las metodologías que permiten establecer

Luis Eduardo Amador Cabra

2004-01-01

422

LA CAPTACIÓN DE RECURSOS PRIVADOS ENTRE LAS ONGD ESPAÑOLAS: UNA APROXIMACIÓN PROBABILÍSTICA \\/ PRIVATE RESOURCES CAPTATION AMONG SPANISH ONGD: A PROBABILÍSTIC APPROXIMATION  

Microsoft Academic Search

La necesidad de recursos privados entre las ENL, tanto para su sostenimiento como para la realización de su labor requiere de estrategias organizativas cada vez más eficaces, por lo que el estudio del fundraising y su eficacia suscita un gran interés. En este trabajo, y basándonos en las conclusiones de estudios previos, pretendemos analizar la relación e influencia de una

M. B. Gutiérrez Villar; R. A. Araque Padilla; M. J Montero Simó

2009-01-01

423

LA DECISIÓN DE INNOVAR DE LAS EMPRESAS TURÍSTICAS: UN ANÁLISIS EMPÍRICO DE LA INDUSTRIA HOSTELERA \\/ THE INNOVATION DECISION OF TOURISM FIRMS: AN EMPIRICAL ANALYSIS OF THE HOSPITALITY INDUSTRY  

Microsoft Academic Search

Este trabajo analiza los factores de índole tanto interna como externa que pueden ser determinantes en la decisión de emprender actividades innovadoras en las empresas hosteleras. Para llevar a cabo la contrastación empírica de las hipótesis propuestas se ha utilizado un modelo de regresión logística binaria. El estudio empírico utiliza una muestra de 443 empresas que forman parte de la

M. C. López-Fernández; A. M. Serrano-Bedia; R Gómez-López

2009-01-01

424

Degradation of linear alkylabenzene sulfonate (LAS) and its compounds in Donghu Lake (Hubei, P.R.C.) determined by high performance liquid chromatography (HPLC)  

NASA Astrophysics Data System (ADS)

Commercial linear alkylbenzene sulfonate (LAS), mixture of alkylchain lengths and phenyl position isomers (C10-C13), is widely used as a major constituent of household and industrial detergents in the People's Republic of China. Degradation process and behaviour of LAS compounds during an 82-hour lake water die-away study, with an added LAS concentration of 1.5mg·L-1, was quantified and accomplished by HPLO-UV after extractionon the SepPek C18 reversed-phase cartridges. The degradation rate became progressively faster with increasing chain length. The technique described in this study is fast, sensitive and specific, and can be used to determine low levels of LAS and for establishing water quality criteria and standards relating to LAS and its compounds.

Ayfer, Yediler; Xu, Ying; Zhang, Yongyuan; Chen, Junjian

1990-06-01

425

Narrowband Photometry and Imaging of Deep Impact Target Comet 9P\\/Tempel 1 at Las Campanas Observatory  

Microsoft Academic Search

We present updated results from observations of Comet 9P\\/Tempel 1 during the 2005 Deep Impact Mission. During this mission, a 370kg copper projectile, designed to penetrate the mantle of 9P\\/Tempel 1, impacted the comet's surface on July 4, 2005. We will show images of the comet taken with the 2.5m DuPont telescope at Las Campanas Observatory from July 3 to

Luis A. Mondragon; S. M. Lederer; D. J. Osip; J. E. Thomas-Osip; J. M. de Buizer

2006-01-01

426

LA ESTACIN DE AFOROS DE PUENTE CASTILLA, DESDE 1970 MIDIENDO LAS DESCARGAS DEL ACUFERO DE LA VEGA DE  

E-print Network

LA ESTACI�N DE AFOROS DE PUENTE CASTILLA, DESDE 1970 MIDIENDO LAS DESCARGAS DEL ACUÍFERO DE LA VEGA importancia de la estación de aforos de Puente Castilla de la red oficial de la Confederación Hidrográfica del Granada, descargas, río Genil, Puente Castilla ABSTRACT In this paper is shown the strategic location

Castillo, Antonio

427

Tratamiento ayuda a las mujeres jóvenes a preservar la fertilidad durante la quimioterapia para el cáncer de seno  

Cancer.gov

Las mujeres jóvenes con cáncer de seno (mama) lograron preservar la fertilidad durante los tratamientos del cáncer con un fármaco inyectable bloqueador de hormonas que les provocó menopausia temporal. Los resultados del estudio se anunciaron hoy en el congreso anual de la Sociedad Americana de Oncología Clínica (ASCO), y provienen del Estudio de Prevención de la Menopausia Temprana (POEMS), patrocinado por el Instituto Nacional del Cáncer (NCI).

428

Respuestas a las preguntas del ejercicio de ``La Expansi'on del Universo y la Ley de Hubble''  

E-print Network

Respuestas a las preguntas del ejercicio de ``La Expansi'on del Universo y la Ley de Hubble'' --La constante de Hubble, H, debe de salir alrededor de 70 km s \\Gamma1 Mpc \\Gamma1 . El tiempo transcurrido desde el inicio del Universo ser'a t = D=V . Pero por otra parte, la constante de Hubble es H = V=D, de

Rodriguez, Luis F.

429

Quorum-sensing-deficient (lasR) mutants emerge at high frequency from a Pseudomonas aeruginosa mutS strain  

Microsoft Academic Search

In Pseudomonas aeruginosa, quorum sensing constitutes a highly complex cell-to-cell communication system that, along with the cognate acylhomoserine lactone signals and regulators LasR and RhlR, modulates the production of virulence factors and a wide range of metabolic functions. In a previous paper, the authors reported that mismatch repair disruption inP. aeruginosa results in the spontaneous and reproducible emergence of defined

Adela M. Lujan; Alejandro J. Moyano; Ignacio Segura; Carlos E. Argarana; Andrea M. Smania

2007-01-01

430

Las Cumbres Observatory Global Telescope Network: Keeping Citizen Scientists in the Dark  

NASA Astrophysics Data System (ADS)

Las Cumbres Observatory Global Telescope Network (LCOGT) is creating a network of telescopes at excellent sites around the world providing 24/7 all sky coverage for astronomical observations. The network of telescopes, ranging in size from 0.4 m to 2.0 m, will be available for both scientific and education users. The LCOGT telescopes are being built quickly and will be deployed soon. The two 2.0 m Faulkes Telescopes, one on Haleakala, Maui (FTN), the other at Siding Spring Observatory, Australia (FTS), are currently in operation. There is also a 0.8 m telescope in the Santa Ynez Valley, California (BOS), which is being used for commissioning and for many local outreach programs. The first 1.0 m telescopes will be heading to Chile and South Africa in 2011 and will each be accompanied by a 0.4 m telescope. Other sites, including Tenerife (Canary Islands, Spain), McDonald Observatory (Texas), Siding Spring (Australia), and Haleakala (Hawaii) will follow, with the possibility of up to two additional sites yet to be selected. The LCOGT education and public outreach effort is transforming into a "Citizen Science" program. Several projects will encompass taking observations through the network, analyzing the data, and sharing the results with other citizen scientists from around the world. The first of these projects, "Agent Exoplanet," will be launched in mid-2011, and will involve analyzing brand-new data to create a light curve of an exoplanet. As the network is not yet complete, this test project will not include actual observing as future ones will. More information about LCOGT and its Citizen Science program can be found online (http://www.lcogt.net). In addition to material to get started in the Citizen Science program, the website also includes resources and content for more hands-on activities using archived data, general astronomy pages, network information, complete access to the public data archive, current news, and recent publications. And don't forget to register for the LCOGT monthly newsletter.

Ross, R. J.

2012-08-01

431

Las Cumbres Observatory Global Telescope Network: Keeping Education in the Dark  

NASA Astrophysics Data System (ADS)

Las Cumbres Observatory Global Telescope Network (LCOGT) is creating a network of telescopes to be placed around the world providing 24/7 sky coverage of both the Northern and Southern hemispheres. These telescopes will range in size from 0.4 m to 2.0 m and will be available for scientific and educational uses in both real-time and in a queue-scheduler. The educational uses of LCOGT will be primarily online through our website (http://www.lcogt.net) where there will be how-to guides, ideas for activities, opportunities for participating in research projects with our astronomers, full access to the public archive, as well as an online community built through forums and groups. Content will be visible to all, although registered users will have the ability to add resources, post on blogs and forums, comment and rate existing pages and resources, collaborate in world-wide projects, and much more. The current network includes the two 2.0 m Faulkes Telescopes on Haleakala, Maui and at Siding Spring, Australia. A 0.8 m telescope located at Sedgwick Reserve in the Santa Ynez Valley is nearly commissioned and will be used both for local outreach events as well as on the LCOGT network. The first pair of 0.4 m telescopes has been deployed to Maui and are enclosed inside the clamshell dome with Faulkes Telescope North (FTN), but still have some time to go before they are fully commissioned. The site in Chile is currently being prepped for three 1.0 m and two pairs of 0.4 m telescopes with the site in South Africa to follow shortly. Other sites include the Canary Islands, a site in North America, one in Asia, and another site in Australia. The 0.4 m telescopes will be deployed by pair and the 1.0 m telescopes will be deployed in groups of two or three, all with research-grade instrumentation.

Ross, R. J.

2011-09-01

432

Evaporite sedimentation in a tectonically active basin: The lacustrine Las Minas Gypsum unit (Late Tortonian, SE Spain)  

NASA Astrophysics Data System (ADS)

Evaporite successions may undergo significant lithostratigraphic changes laterally and vertically in tectonically-active basins. The Las Minas Gypsum, a lacustrine unit of Late Tortonian age and up to 160 m thick in the Las Minas-Camarillas basin (SE Spain), consists of a number of shallowing-upward cycles. Each cycle is made up of a lower interval with marl and carbonate, and an upper interval with gypsum. In the upper interval, the base displays carbonate-gypsum laminites (couplets, yearly microcycles) showing a large variability of textures and fabrics; gypsum textures are cumulates and bottom-grown crystals. Laminites are overlain by selenitic gypsum. The carbonate is a primary dolomite induced by sulphate-reducing bacterial activity. Native sulphur was formed in early diagenesis and during exhumation was partly transformed into late diagenetic gypsum. The isotopic compositions of gypsum suggest that the sulphate mainly derived from chemical recycling of Triassic evaporites; however, marine sulphate was probably supplied by episodic marine incursions. A perennial saline lake characterized by irregular bottom topography and depositional settings with variable subsidence ratios is interpreted. In addition to climate, saline diapirism, Neogene volcanism, synsedimentary faulting and seismicity influenced the evaporitic deposition. Las Minas-Camarillas basin is an example of how in tectonically active zones different factors interplay to produce significant variability of the evaporitic sedimentation and cyclicity.

Ortí, Federico; Rosell, Laura; Gibert, Lluís; Moragas, Mar; Playà, Elisabet; Inglès, Montserrat; Rouchy, Jean Marie; Calvo, José Pedro; Gimeno, Domingo

2014-08-01

433

The U.S. Department of Energy Office of Indian Energy Policy and Programs Las Vegas, Nevada, Roundtable Summary  

SciTech Connect

LAS VEGAS EXECUTIVE SUMMARY The Las Vegas, Nevada DOE Tribal Roundtable convened on March 16th, at the Las Vegas Hilton. The meeting was hosted by the Department of Energy (DOE) Office of Indian Policy and Programs (DOE Office of Indian Energy) and facilitated by JR Bluehouse, Program Manager, Udall Foundation’s U.S. Institute for Environmental Conflict Resolution (U.S. Institute). Mr. Bluehouse was assisted by Tamara, Underwood, Program Assistant, U.S. Institute.  Tribal leaders and representatives from multiple tribal governments and communities attended the roundtable. Tracey LeBeau, newly appointed Director of the Office of Indian Energy attended.    LaMont Jackson from DOE’s Office of Electricity attended. Also attending from the administration and federal agencies were Kim Teehee, Senior Policy Advisor for Native American Affairs, The White House; Charlie Galbraith, Associate Director of the Office of Public Engagement and Deputy Associate Director of the Office of Intergovernmental Affairs, The White House; Jodi Gillette, Deputy Assistant Secretary for Policy and Economic Development, the Bureau of Indian Affairs.

none,

2011-03-16

434

Reconciling Scale Mismatch in Water Governance, Hydro-climatic Processes and Infrastructure Systems of Water Supply in Las Vegas  

NASA Astrophysics Data System (ADS)

Water resource systems are a classic example of a common pool resource due to the high cost of exclusion and the subtractability of the resource; for common pool resources, the performance of governance systems primarily depends on how well matched the institutional arrangements and rules are to the biophysical conditions and social norms. Changes in water governance, hydro-climatic processes and infrastructure systems occur on disparate temporal and spatial scales. A key challenge is the gap between current climate change model resolution, and the spatial and temporal scale of urban water supply decisions. This gap will lead to inappropriate management policies if not mediated through a carefully crafted decision making process. Traditional decision support and planning methods (DSPM) such as classical decision analysis are not equipped to deal with a non-static climate. While emerging methods such as decision scaling, robust decision making and real options are designed to deal with a changing climate, governance systems have evolved under the assumption of a static climate and it is not clear if these methods are well suited to the existing governance regime. In our study, these questions are contextualized by examining an urban water utility that has made significant changes in policy to adapt to changing conditions: the Southern Nevada Water Authority (SNWA) which serves metropolitan Las Vegas. Like most desert cities, Las Vegas exists because of water; the artesian springs of the Las Vegas Valley once provided an ample water supply for Native Americans, ranchers and later a small railroad city. However, population growth has increased demands far beyond local supplies. The area now depends on the Colorado River for the majority of its water supply. Natural climate variability with periodic droughts has further challenged water providers; projected climate changes and further population growth will exacerbate these challenges. Las Vegas is selected as a case study due to the combined challenges of population growth and climate change, common in the arid west, and due its cooperative institutional response to these challenges, unprecedented in the arid west. To begin to disentangle this question we have analyzed the institutional arrangements and rules which govern water decision making in the Las Vegas Valley and evaluated the existing DSPM used by the SNWA and partner utilities. Presented here are the preliminary results from an ongoing project.

Garcia, M. E.; Alarcon, T.; Portney, K.; Islam, S.

2013-12-01

435

Las Palmeras Molecular Dynamics: A flexible and modular molecular dynamics code  

NASA Astrophysics Data System (ADS)

Las Palmeras Molecular Dynamics (LPMD) is a highly modular and extensible molecular dynamics (MD) code using interatomic potential functions. LPMD is able to perform equilibrium MD simulations of bulk crystalline solids, amorphous solids and liquids, as well as non-equilibrium MD (NEMD) simulations such as shock wave propagation, projectile impacts, cluster collisions, shearing, deformation under load, heat conduction, heterogeneous melting, among others, which involve unusual MD features like non-moving atoms and walls, unstoppable atoms with constant-velocity, and external forces like electric fields. LPMD is written in C++ as a compromise between efficiency and clarity of design, and its architecture is based on separate components or plug-ins, implemented as modules which are loaded on demand at runtime. The advantage of this architecture is the ability to completely link together the desired components involved in the simulation in different ways at runtime, using a user-friendly control file language which describes the simulation work-flow. As an added bonus, the plug-in API (Application Programming Interface) makes it possible to use the LPMD components to analyze data coming from other simulation packages, convert between input file formats, apply different transformations to saved MD atomic trajectories, and visualize dynamical processes either in real-time or as a post-processing step. Individual components, such as a new potential function, a new integrator, a new file format, new properties to calculate, new real-time visualizers, and even a new algorithm for handling neighbor lists can be easily coded, compiled and tested within LPMD by virtue of its object-oriented API, without the need to modify the rest of the code. LPMD includes already several pair potential functions such as Lennard-Jones, Morse, Buckingham, MCY and the harmonic potential, as well as embedded-atom model (EAM) functions such as the Sutton-Chen and Gupta potentials. Integrators to choose include Euler (if only for demonstration purposes), Verlet and Velocity Verlet, Leapfrog and Beeman, among others. Electrostatic forces are treated as another potential function, by default using the plug-in implementing the Ewald summation method. Program summaryProgram title: LPMD Catalogue identifier: AEHG_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEHG_v1_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: GNU General Public License version 3 No. of lines in distributed program, including test data, etc.: 509 490 No. of bytes in distributed program, including test data, etc.: 6 814 754 Distribution format: tar.gz Programming language: C++ Computer: 32-bit and 64-bit workstation Operating system: UNIX RAM: Minimum 1024 bytes Classification: 7.7 External routines: zlib, OpenGL Nature of problem: Study of Statistical Mechanics and Thermodynamics of condensed matter systems, as well as kinetics of non-equilibrium processes in the same systems. Solution method: Equilibrium and non-equilibrium molecular dynamics method, Monte Carlo methods. Restrictions: Rigid molecules are not supported. Polarizable atoms and chemical bonds (proteins) either. Unusual features: The program is able to change the temperature of the simulation cell, the pressure, cut regions of the cell, color the atoms by properties, even during the simulation. It is also possible to fix the positions and/or velocity of groups of atoms. Visualization of atoms and some physical properties during the simulation. Additional comments: The program does not only perform molecular dynamics and Monte Carlo simulations, it is also able to filter and manipulate atomic configurations, read and write different file formats, convert between them, evaluate different structural and dynamical properties. Running time: 50 seconds on a 1000-step simulation of 4000 argon atoms, running on a single 2.67 GHz Intel processor.

Davis, Sergio; Loyola, Claudia; González, Felipe; Peralta, Joaquín

2010-12-01

436

Morphology and mechanics of large collapses: Sotano de las Golondrinas, Mexico  

NASA Astrophysics Data System (ADS)

The dynamics and mode of formation of large karst pipes are not yet fully understood. We present precise Lidar and structural field data of the 340+ m deep open karst shaft el Sotano de las Golondrinas, and test the geometry on a a simplified 2D evolution model. The Golondrinas shaft is located in the San Luis county, northeastern México and is developed in massive, early cretaceous (Barremian-Coniacian) reef- limestones (El Abra/ El Doctor fm.). It is a bell-shaped breakout dome that has reached the land surface, i.e. a classical Einstrurtzdoline. The dimensions and shape makes it to an interesting case study, as it has similar dimensions as breccia-pipes encountered in many paleokarsts, but is incompletely filled, so that internal structure can be easily inspected. Second, with regard to stress mechanisms controlling roof collapse, the large dimensions (270 - 130 m diameter at the base) reduce the influence (anisotropy) of geological structures in comparison to smaller pipes (e.g. <70 m diameter). We may thus test morphology against the shape of various tectonic and gravitational stress distributions. During our field campaign in 2009, it was decided to re-map the cavity using laser (Lidar and rangefinders) in order to obtain exact dimensions and high-resolution images of morphology and geologic structure. The maximum explored depth is a fissure at -512 m with the main floor between 325 and 400 meters below the skylight entrance of 80 m diameter. Overall, the shaft is cigar-shaped and oval in outline. Its horizontal length/width ratio at floor level is about 2.31, with an azimuth of elongation of about 125 degrees true. The shaft is developed along a major, steep fracture zone (115°, true) which makes up the north wall. The fracture has no detectable off-set, in all very few faults were observed. The strike of the guiding fracture, the azimuth of elongation and the direction of the least horizontal stress direction (111°, true) coincide. Where it occurs, bedding is almost horizontal. A simple 2D grid model was made to test morphological evolution of collapse into a dissolving void, using dissolution rate, yield strength and bed thickness as input parameters. Breakdown processes was represented with a beam model on unsupported beds. So far, our experiments mimic the observed bottle-shaped morphology. Probability-based models of sinkhole hazard are closely related to the expected mature architecture of the collapse-pipe field. As a comparison to the Sotano de los Golondrinas, a late Paleozoic to early Mesozoic field of collapse pipes exposed on Svalbard consists of > 250-m-tall breccia-filled collapse pipes in limestone but related to deep dissolution of underlying gypsum. The average pipe diameter is 60 m, pipes are typically asymmetric by 15% of the diameter but aspect rations similar to Golondrines are not uncommon. Several of the 50 pipes reach diameters of over 150m. The lack of terrigenous material inside the pipes suggests they did not reach the surface. Collapse breccia pipes form strong vertical heterogeneities in rock properties such as porosity and permeability, matrix density, cement, mechanical strength and lithology, affecting fluid-flow characteristics on a meter to hundred-meter scale. It is rare that pipe fields are well exposed at the kilometre scale. Studies at the km scale are fundamental for understanding basic karst and collapse processes, and yield petrophysical models that can be applied predictively to natural hazards and groundwater or hydrocarbon exploitation in paleokarst settings.

Lauritzen, S.-E.; Hammer, Ø.; Wheeler, W.; Redfield, T.; Blanco, M.; Rosales Lagarde, L.; Jamtveit, B.

2012-04-01

437

¿Quién teme a la psicología feminista? Reflexiones sobre las construcciones discursivas de profesores, estudiantes y profesionales de psicología para que cuando el género entre en el aula, el feminismo no salga por la ventana  

Microsoft Academic Search

* Resumen: En el texto se problematizará la inclusión del género en psicología a partir de las construcciones discursivas obtenidas en una investigación cualitativa sobre las opiniones de estudiantes, profesores y profesionales. Dado que la mayor aceptación asimila \\

Teresa Cabruja Ubach

2008-01-01

438

Laser Remote Measurements of atmospheric pollutants (Las-R-Map): UV-Visible Laser system description and data processing  

NASA Astrophysics Data System (ADS)

Laser radar more popularly known as LIDAR LIght Detection And Ranging is becoming one of the most powerful techniques for active remote sensing of the earth s atmosphere Around the globe several new lidar systems have been developed based on the scientific interest Particularly the DIfferential Absorption Lidar DIAL technique is only one which can provide the better accuracy of measuring atmospheric pollutants Using modern advanced techniques and instrumentation a mobile DIAL system called laser remote measurements of atmospheric pollutants hear after referred as Las-R-Map is designed at National Laser Centre NLC --Pretoria 25 r 45 prime S 28 r 17 prime E Las-R-Map is basically used for measuring atmospheric pollutants applying the principle of absorption by constituents The system designed primarily to focus on the following pollutant measurements such as SO 2 CH 4 CO 2 NO 2 and O 3 In future the system could be used to measure few particulate matter between 2 5 mu m and 10 mu m Benzene Hg 1 3-butadiene H 2 S HF and Volatile Organic Compounds VOC Las-R-map comprises of two different laser sources Alexandrite and CO 2 optical receiver data acquisition and signal processor It uses alexandrite laser in the UV-Visible region from 200 nm to 800 nm and CO 2 laser in the Far-IR region from 9 2 mu m to 10 8 mu m Such two different laser sources make feasibility for studying the wide range of atmospheric pollutants The present paper is focused on technical details

Sivakumar, V.; Wyk, H. V.

439

Abundancias químicas de las estrellas CP del grupo HgMn ? Leporis y 53 Tauri. II. Boro, Berilio, Carbono, Magnesio, Aluminio y Silicio  

NASA Astrophysics Data System (ADS)

Se determinan las abundancias químicas de los elementos más livianos presentes en dos estrellas CP del grupo HgMn, ? Lep y 53 Tau, utilizando espectros IUE de alta resolución y técnicas de cálculo de espectros sintéticos. Para el cálculo de las líneas se utiliza la lista mas completa de datos atómicos disponible y el programa SYNTHE. Para el cálculo de la abundancia de un elemento se comparan, para cada imagen, los perfiles observados del mayor número de líneas presentes con los perfiles calculados obtenidos por variación de las abundancias iniciales, reteniendo la abundancia para la cual el acuerdo entre las líneas observadas y calculadas es considerado visualmente el mejor. Los resultados obtenidos son comparados con los estimados por la teoría de la difusión.

López García, Z.; Malaroda, S. M.; Faraggiana, R.

440

40 CFR 51.917 - What is the effective date of designation for the Las Vegas, NV, 8-hour ozone nonattainment area?  

Code of Federal Regulations, 2011 CFR

...NV, 8-hour ozone nonattainment area? 51.917 Section 51.917 Protection of Environment...Ambient Air Quality Standard § 51.917 What is the effective date...NV, 8-hour ozone nonattainment area? The Las Vegas, NV,...

2011-07-01

441

40 CFR 51.917 - What is the effective date of designation for the Las Vegas, NV, 8-hour ozone nonattainment area?  

Code of Federal Regulations, 2013 CFR

...NV, 8-hour ozone nonattainment area? 51.917 Section 51.917 Protection of Environment...Ambient Air Quality Standard § 51.917 What is the effective date...NV, 8-hour ozone nonattainment area? The Las Vegas, NV,...

2013-07-01

442

40 CFR 51.917 - What is the effective date of designation for the Las Vegas, NV, 8-hour ozone nonattainment area?  

Code of Federal Regulations, 2012 CFR

...NV, 8-hour ozone nonattainment area? 51.917 Section 51.917 Protection of Environment...Ambient Air Quality Standard § 51.917 What is the effective date...NV, 8-hour ozone nonattainment area? The Las Vegas, NV,...

2012-07-01

443

40 CFR 51.917 - What is the effective date of designation for the Las Vegas, NV, 8-hour ozone nonattainment area?  

Code of Federal Regulations, 2014 CFR

...NV, 8-hour ozone nonattainment area? 51.917 Section 51.917 Protection of Environment...Ambient Air Quality Standard § 51.917 What is the effective date...NV, 8-hour ozone nonattainment area? The Las Vegas, NV,...

2014-07-01

444

Identification Los adultos del barrenador del fresno son ms grandes y de un verde ms brillante que las especies nativas de Agrilus en Norteamrica  

E-print Network

la cubierta de las alas de un verde esmeralda y metálico más oscuro. La parte superior del abdomen dos años para completar una generación en regiones con climas más fríos. En el 2003, la emergencia de

Balser, Teri C.

445

Distress in the Desert: Neighborhood Disorder, Resident Satisfaction, and Quality of Life during the Las Vegas Foreclosure Crisis  

PubMed Central

Using surveys collected from a sample of households nested within ‘naturally occurring’ neighborhoods in Las Vegas, NV during the 2007-2009 economic recession, this study examines the associations between real and perceived measures of neighborhood distress (foreclosure rate, physical decay, crime) and residents' reports of neighborhood quality of life and neighborhood satisfaction. Consistent with social disorganization theory, both real and perceived measures of neighborhood disorder were negatively associated with quality of life and neighborhood satisfaction. Residents' perceptions of neighborliness partially acted as a buffer against the effects of neighborhood distress, including housing foreclosures, on quality of life and neighborhood satisfaction. PMID:25750507

Batson, Christie D.; Monnat, Shannon M.

2014-01-01

446

Degradación de Marismas Costera: el Impacto de la Eutrofización en la Supervivencia del las Marismas Costeras en New England y Central California, USA. (Salt Marsh Deterioration in New England and Central California: Impacts of Eutrophication on Salt Marsh Survival.)  

EPA Science Inventory

Las marismas costeras proporcionan numerosos beneficios a los ecosistemas, incluyendo la proporción del hábitat de la flora y fauna, la protección de las zonas costeras contra inundaciones durante eventos extremos, mejoran la calidad del agua para las almejas y ostras a través de...

447

LA INFLUENCIA DE LA CALIDAD DE SERVICIO LOGÍSTICO EN LA LEALTAD. UN ANÁLISIS DEL PAPEL MODERADOR DE LAS TIC \\/ THE RELATIONSHIP BETWEEN LOGISTICS SERVICE QUALITY AND LOYALTY. THE MODERATOR EFFECT OF ICT  

Microsoft Academic Search

Este trabajo se centra en el estudio de las TIC aplicadas a la función logística en el ámbito de las relaciones entre empresas, y pretende profundizar en el análisis de cómo afecta la presencia de TIC en la clásica cadena de consecuencias: Calidad Servicio ? Valor? Satisfacción? Lealtad. El análisis SEM es utilizado para contrastar las hipótesis de los vínculos

D. Servera Francés; I. Gil Saura; M Fuentes Blasco

2009-01-01

448

The Managua Graben and Las Sierras-Masaya volcanic complex (Nicaragua); pull-apart localization by an intrusive complex: results from analogue modeling  

Microsoft Academic Search

There is a well-documented association between pull-apart basins in strike-slip zones and large volcanic caldera complexes. Las Sierras-Masaya volcanic complex, Nicaragua, is a large basaltic lava and ignimbrite shield with nested calderas. The widest caldera is partly underlain by a large and dense intrusive complex, evidenced by a positive gravity anomaly. The Las Sierras Caldera, relating to this cumulate complex,

Guillaume Girard; Benjamin van Wyk de Vries

2005-01-01

449

2LAs, 3LAs, and the enterprise  

SciTech Connect

This article is about new things that engineers, facility managers and automation system operators need to learn about and understand when it comes to integrating information throughout an enterprise. The goal is to help one better understand the connection between building systems and building intelligence. The authors set the foundation with an overview of the latest concept in network communications, enterprise computing. Because any new technology spawns a number of acronyms, they`ll also investigate new two-, three-, four- and five-letter acronyms that directly affect the changing role of the building automation system (BAS) as it becomes an integral, contributing part of the business. In each case, one or more Internet URLs will be provided for more information.

Hoffmann, T.

1998-01-01

450

Reavivando las Zonas Muertas de las Costas  

NSDL National Science Digital Library

The issue-focused, peer-reviewed article addresses how dead zones, or areas that cannot support life, are increasing along the coast due to: agricultural runoff and fertilizers industrial waste, and acid rain, which is produced by the burning of fossil fuels.

Robert Howarth (Cornell University; )

2000-09-01

451

An analysis of urban thermal characteristics and associated land cover in Tampa Bay and Las Vegas using Landsat satellite data  

USGS Publications Warehouse

Remote sensing data from both Landsat 5 and Landsat 7 systems were utilized to assess urban area thermal characteristics in Tampa Bay watershed of west-central Florida, and the Las Vegas valley of southern Nevada. To quantitatively determine urban land use extents and development densities, sub-pixel impervious surface areas were mapped for both areas. The urban-rural boundaries and urban development densities were defined by selecting certain imperviousness threshold values and Landsat thermal bands were used to investigate urban surface thermal patterns. Analysis results suggest that urban surface thermal characteristics and patterns can be identified through qualitatively based urban land use and development density data. Results show the urban area of the Tampa Bay watershed has a daytime heating effect (heat-source), whereas the urban surface in Las Vegas has a daytime cooling effect (heat-sink). These thermal effects strongly correlated with urban development densities where higher percent imperviousness is usually associated with higher surface temperature. Using vegetation canopy coverage information, the spatial and temporal distributions of urban impervious surface and associated thermal characteristics are demonstrated to be very useful sources in quantifying urban land use, development intensity, and urban thermal patterns. ?? 2006 Elsevier Inc. All rights reserved.

Xian, G.; Crane, M.

2006-01-01

452

Morphology, body proportions, and postcranial hypertrophy of a female Neandertal from the Sima de las Palomas, southeastern Spain  

PubMed Central

Considerations of Neandertal geographical variation have been hampered by the dearth of remains from Mediterranean Europe and the absence there of sufficiently complete associated postcrania. The 2006 and 2007 excavation of an articulated partial skeleton of a small adult female Neandertal at the Sima de las Palomas, Murcia, southeastern Spain (Sima de las Palomas 96) provides substantial and secure information on body proportions among southern European Neandertals, as well as further documenting the nature of Neandertal biology in southern Iberia. The remains exhibit a suite of cranial, mandibular, dental, and postcranial features, of both Neandertals and archaic Homo generally, that distinguish them from contemporary and subsequent early modern humans. Its lower limbs exhibit the robustness of later Pleistocene Homo generally, and its upper limbs conform to the pattern of elevated robustness of the Neandertals. Its body proportions, including relative clavicular length, distal limb segment lengths, and body mass to stature indicators, conform to the “cold-adapted” pattern of more northern Neandertals. Palomas 96 therefore documents the presence of a suite of “Neandertal” characteristics in southern Iberia and, along with its small body size, the more “Arctic” body proportions of other European Neandertals despite the warmer climate of southern Iberia during marine isotope stage 3. PMID:21646528

Walker, Michael J.; Ortega, Jon; Parmová, Klara; López, Mariano V.; Trinkaus, Erik

2011-01-01

453

Changes in air quality at near-roadway schools after a major freeway expansion in Las Vegas, Nevada.  

PubMed

Near-roadway ambient black carbon (BC) and carbon monoxide (CO) concentrations were measured at two schools adjacent to a freeway and at an urban background school 2 km from the freeway to determine the change in concentrations attributable to vehicle emissions after the three-lane expansion of U.S. Highway 95 (US 95) in Las Vegas, Nevada. Between summer 2007 and summer 2008, average weekday small-vehicle volume increased by 40% +/- 2% (standard error). Average weekday large-vehicle volume decreased by 17% +/- 5%, due to a downturn in the economy and an associated decline in goods movement. Average vehicle speed increased from 58 to 69 mph, a 16% +/- 1% increase. The authors compared BC and CO concentrations in summer 2007 with those in summer 2008 to understand what effect the expansion of the freeway may have had on ambient concentrations: BC and CO were measured 17 m north of the freeway sound wall, CO was measured 20 m south of the sound wall, and BC was measured at an urban background site 2 km south of the freeway. Between summer 2007 and summer 2008, median BC decreased at the near-road site by 40% +/- 2% and also decreased at the urban background site by 24% +/- 4%, suggesting that much of the change was due to decreases in emissions throughout Las Vegas, rather than only on US 95. CO concentrations decreased by 14% +/- 2% and 10% +/- 3% at the two near-road sites. The decrease in BC concentrations after the expansion is likely due to the decrease in medium- and heavy-duty-vehicle traffic resulting from the economic recession. The decrease in CO concentrations may be a result of improved traffic flow, despite the increase in light-duty-vehicle traffic. Implications: Monitoring of BC and CO at near-road locations in Las Vegas demonstrated the impacts of changes in traffic volume and vehicle speed on near-road concentrations. However, urban-scale declines in concentrations were larger than near-road changes due to the impacts of the economic recession that occurred contemporaneously with the freeway expansion. PMID:25282997

Brown, Steven G; McCarthy, Michael C; DeWinter, Jennifer L; Vaughn, David L; Roberts, Paul T

2014-09-01

454

FourStar: The Near-Infrared Imager for the 6.5m Baade Telescope at Las Campanas Observatory  

NASA Astrophysics Data System (ADS)

The FourStar Infrared Camera is a 4 K×4 K near-infrared (1.0-2.4 ?m) imager built for the Magellan 6.5 m Baade Telescope at Las Campanas Observatory, Chile. FourStar has an all-refractive optical system, four HAWAII-2RG detectors, and Teledyne electronics. The pixel scale of 0.159? pixel produces a 10.8'×10.8' field of view. Ten filters are available across the Y, J, H, and K bands. We present the optical, mechanical, thermal, electronic, and software design choices and their associated engineering implementations. The detector readout electronics, control system, and the automatic data acquisition hardware are also described. Laboratory and on-sky performance data are presented. FourStar has excellent image quality, easily meeting the requirement of critically sampling the median seeing disk. The throughput is ?0.5-0.6 across its wavelength coverage. Some early science results are presented.

Persson, S. E.; Murphy, D. C.; Smee, S.; Birk, C.; Monson, A. J.; Uomoto, A.; Koch, E.; Shectman, S.; Barkhouser, R.; Orndorff, J.; Hammond, R.; Harding, A.; Scharfstein, G.; Kelson, D.; Marshall, J.; McCarthy, P. J.

2013-06-01

455

Spatial Statistics of the Clark County Parcel Map, Trial Geotechnical Models, and Effects on Ground Motions in Las Vegas Valley  

NASA Astrophysics Data System (ADS)

When deterministically modeling the propagation of seismic waves, shallow shear-wave velocity plays a crucial role in predicting shaking effects such as peak ground velocity (PGV). The Clark County Parcel Map provides us with a data set of geotechnical velocities in Las Vegas Valley, at an unprecedented level of detail. Las Vegas Valley is a basin with similar geologic properties to some areas of Southern California. We analyze elementary spatial statistical properties of the Parcel Map, along with calculating its spatial variability. We then investigate these spatial statistics from the PGV results computed from two geotechnical models that incorporate the Parcel Map as parameters. Plotting a histogram of the Parcel Map 30-meter depth-averaged shear velocity (Vs30) values shows the data to approximately fit a bimodal normal distribution with ?1 = 400 m/s, ?1 = 76 m/s, ?2 = 790 m/s, ?2 = 149 m/s, and p = 0.49., where ? is the mean, ? is standard deviation, and p is the probability mixing factor for the bimodal distribution. Based on plots of spatial power spectra, the Parcel Map appears to be fractal over the second and third decades, in kilometers. The spatial spectra possess the same fractal dimension in the N-S and the E-W directions, indicating isotropic scale invariance. We configured finite-difference wave propagation models at 0.5 Hz with LLNL's E3D code, utilizing the Parcel Map as input parameters to compute a PGV data set from a scenario earthquake (Black Hills M6.5). The resulting PGV is fractal over the same spatial frequencies as the Vs30 data sets associated with their respective models. The fractal dimension is systematically lower in all of the PGV maps as opposed to the Vs30 maps, showing that the PGV maps are richer in higher spatial frequencies. This is potentially caused by a lens focusing effects on seismic waves due to spatial heterogeneity in site conditions.

Savran, W. H.; Louie, J. N.; Pullammanappallil, S.; Pancha, A.

2011-12-01

456

A preliminary assessment of earthquake ground shaking hazard at Yucca Mountain, Nevada and implications to the Las Vegas region  

SciTech Connect

As part of early design studies for the potential Yucca Mountain nuclear waste repository, the authors have performed a preliminary probabilistic seismic hazard analysis of ground shaking. A total of 88 Quaternary faults within 100 km of the site were considered in the hazard analysis. They were characterized in terms of their probability o being seismogenic, and their geometry, maximum earthquake magnitude, recurrence model, and slip rate. Individual faults were characterized by maximum earthquakes that ranged from moment magnitude (M{sub w}) 5.1 to 7.6. Fault slip rates ranged from a very low 0.00001 mm/yr to as much as 4 mm/yr. An areal source zone representing background earthquakes up to M{sub w} 6 1/4 = 1/4 was also included in the analysis. Recurrence for these background events was based on the 1904--1994 historical record, which contains events up to M{sub w} 5.6. Based on this analysis, the peak horizontal rock accelerations are 0.16, 0.21, 0.28, and 0.50 g for return periods of 500, 1,000, 2,000, and 10,000 years, respectively. In general, the dominant contributor to the ground shaking hazard at Yucca Mountain are background earthquakes because of the low slip rates of the Basin and Range faults. A significant effect on the probabilistic ground motions is due to the inclusion of a new attenuation relation developed specifically for earthquakes in extensional tectonic regimes. This relation gives significantly lower peak accelerations than five other predominantly California-based relations used in the analysis, possibly due to the lower stress drops of extensional earthquakes compared to California events. Because Las Vegas is located within the same tectonic regime as Yucca Mountain, the seismic sources and path and site factors affecting the seismic hazard at Yucca Mountain also have implications to Las Vegas. These implications are discussed in this paper.

Wong, I.G.; Green, R.K.; Sun, J.I. [Woodward-Clyde Federal Services, Oakland, CA (United States); Pezzopane, S.K. [Geological Survey, Denver, CO (United States); Abrahamson, N.A. [Abrahamson (Norm A.), Piedmont, CA (United States); Quittmeyer, R.C. [Woodward-Clyde Federal Services, Las Vegas, NV (United States)

1996-12-31

457

Simulation of unsaturated flow and solute transport at the Las Cruces trench site using the PORFLO-3 computer code  

SciTech Connect

The objective of this work was to test the ability of the PORFLO-3 computer code to simulate water infiltration and solute transport in dry soils. Data from a field-scale unsaturated zone flow and transport experiment, conducted near Las Cruces, New Mexico, were used for model validation. A spatial moment analysis was used to provide a quantitative basis for comparing the mean simulated and observed flow behavior. The scope of this work was limited to two-dimensional simulations of the second experiment at the Las Cruces trench site. Three simulation cases are presented. The first case represents a uniform soil profile, with homogeneous, isotropic hydraulic and transport properties. The second and third cases represent single stochastic realizations of randomly heterogeneous hydraulic conductivity fields, generated from the cumulative probability distribution of the measured data. Two-dimensional simulations produced water content changes that matched the observed data reasonably well. Models that explicitly incorporated heterogeneous hydraulic conductivity fields reproduced the characteristics of the observed data somewhat better than a uniform, homogeneous model. Improved predictions of water content changes at specific spatial locations were obtained by adjusting the soil hydraulic properties. The results of this study should only be considered a qualitative validation of the PORFLO-3 code. However, the results of this study demonstrate the importance of site-specific data for model calibration. Applications of the code for waste management and remediation activities will require site-specific data for model calibration before defensible predictions of unsaturated flow and containment transport can be made. 23 refs., 16 figs., 3 tabs.

Rockhold, M.L.; Wurstner, S.K.

1991-03-01

458

Integrating Collaboration, Adaptive Management, and Scenario-Planning to Address Rapid Change: Experiences at Las Cienegas National Conservation Area  

NASA Astrophysics Data System (ADS)

There is growing recognition that public lands cannot be managed as islands; rather, land management must address the ecological, social, and temporal complexity that often spans jurisdictions and traditional planning horizons. Collaborative decision-making and adaptive management (CAM) have been promoted as methods to reconcile competing societal demands and respond to complex ecosystem dynamics. We present the experiences of land managers and stakeholders in using CAM at Las Cienegas National Conservation Area (LCNCA), a highly valued site under the jurisdiction of the Bureau of Land Management (BLM). The CAM process at Las Cienegas is marked by strong stakeholder engagement, with four core elements: 1) shared watershed goals with measurable resource objectives; 2) mechanisms to incorporate new information into decision-making; 3) efforts to make information increasingly relevant and reliable; and 4) shared learning to improve both the process and management actions. The combination of stakeholder engagement and adaptive management has led to agreement on contentious issues, more innovative solutions, and more effective land management. Yet the region is now experiencing rapid changes outside managers' control—including climate change, human population growth, and reduced federal budgets—with large but unpredictable impacts on natural resources. While CAM experience provides a strong foundation for making the difficult and contentious management decisions that such changes are likely to require, neither collaboration nor adaptive management provides a sufficient structure for addressing uncontrollable and unpredictable change. As a result, LCNCA is exploring two specific modifications to CAM that may better address emerging challenges, including: 1) Creating nested resource objectives to distinguish between those objectives which may be crucial from those which may hinder a flexible response to climate change, and 2) Incorporating scenario planning into CAM to explore how climate change may interact with other drivers and alter options for the future, to identify robust management, and to prioritize ecological monitoring efforts. The experiences at LCNCA demonstrate how collaboration and adaptive management can be used to improve social and environmental outcomes and, with a few modifications, may help address the complexity and change that threatens to overwhelm even the best efforts to sustain public lands.

Caves, J. K.; Bodner, G.; Simms, K.; Fisher, L.; Robertson, T.

2012-12-01

459

Characterization of the Sediment Routing System of the Argentine Las Peñas Thrust From ASTER Imagery Interpretation and DEM Terrain Analysis  

NASA Astrophysics Data System (ADS)

In an arid region north of Mendoza, Argentina active structures of the Precordilleran fold and thrust belt control sedimentation in the proximal Andean foreland basin. Initiation of new thrust faults and along-strike growth of fault-propagation folds drives uplift of hanging-wall source areas. Drainage basin initiation and development in the Las Peñas thrust hanging-wall triggers erosion of sediment, controlling transport and depositional mechanisms in the associated alluvial fan system. Alluvial fans are classified as either sheetflood or debris-flow fans based on the areally dominant process responsible for producing the sediment wedge as recorded in the surface character and morphology of the fans. Traditionally, information about these systems has been directly measured using manual methods such as ground surveying and visible image interpretation. This study implements remote sensing with ASTER spectral data and derived topographic data to characterize both fan surfaces and drainage basins. AST14DMO data include fourteen ASTER Level-1B calibrated nadir looking radiance bands at 15-m (VNIR), 30-m (SWIR) and 90-m (TIR) resolution. AST14DMO also includes the ASTER 30-m Digital Elevation Model (DEM) derived from stereoscopic data from the VNIR sensor. These bands were used in rule-based classification implemented in statistical software. The classification was used for mapping and measuring the patterns and spectral characteristics of fan surfaces. TIR and VNIR explanatory variables in decision trees highlighted differences in fan environmental variables including soil conditions, sediment size, and vegetation (moisture, roughness, and composition) indicative of process and rate of deposition on alluvial fans. Terrain Analysis conducted with the ASTER 30-m DEM focused on morphology of the drainage basin sector of the sediment routing system. Drainage basin characteristics including areal extent, slope, aspect, hypsometric curves, and bedrock geology were identified and compared. The information was used to interpret transport and depositional mechanisms within the system, as well as identify source materials and possible ranges of fluid-sediment concentrations for each basin. The geometry of the developing Las Peñas thrust controls attributes of both drainage basin source areas, and alluvial fan depositional environments as shown by their variation along the fault. The techniques and setting of this study inform interpretations of processes active in modern systems that are applicable to ancient systems on Earth and elsewhere.

Abrahamson, I. S.; Schmitt, J.

2009-12-01

460

Se recuerda a todos los alumnos las siguientes normas a seguir para la defensa y exposicin de los trabajos/proyectos fin de grado del curso de adaptacin al grado de  

E-print Network

trabajos/proyectos fin de grado del curso de adaptación al grado de Ingeniería de Edificación: Las aulas reservadas para que los alumnos ensayen su exposición están publicadas en el campus virtual como noticia y en la web del Departamento de Edificación y Urbanismo. Las aulas donde se celebrarán las exposiciones

Escolano, Francisco

461

Manuscript of the following paper : GAUTREAU P. & Lezama F. 2009. Clasificacin florstica de los bosques y arbustales de las sierras de  

E-print Network

de extrapolación o de contextualización de experimentos diferentes a las categorías de bosques y leñosas serranas uruguayas [Palabras-clave : arbustales, bosques, campos del Río de la Plata] hal-00744772

Boyer, Edmond

462

Slope-apron deposition in an Ordovician arc-related setting: the Vuelta de Las Tolas Member (Suri Formation), Famatina Basin, northwest Argentina  

Microsoft Academic Search

The Ordovician Suri Formation is part of the infill of the Famatina Basin of northwest Argentina, which formed in an active setting along the western margin of early Paleozoic Gondwana. The lower part of this formation, the Vuelta de Las Tolas Member, records sedimentation on a slope apron formed in an intra-arc basin situated on a flooded continental arc platform.

María Gabriela Mángano; Luis Alberto Buatois

1997-01-01

463

30Exploring a City from Space This QuickBird Satellite image was taken of downtown Las Vegas Nevada from an altitude of 450  

E-print Network

an upside-down 'Y' is the Bellaggio Hotel at the corner of Las Vegas Boulevard and Flamingo Road. The width Vegas Boulevard and Flamingo Road. The width of the image is 700 meters. The scale of an image is found

464

STUDENT DIRECTORY INFORMATION In accordance with the University of Nevada, Las Vegas policy and the U.S. Family Education Rights and  

E-print Network

STUDENT DIRECTORY INFORMATION In accordance with the University of Nevada, Las Vegas policy exception to the above practice is the release of "directory" information considered to be public in nature and not generally deemed to be an invasion of privacy. At UNLV, the following categories are defined as "directory

Hemmers, Oliver

465

fLasHThe Free-Electron Laser new technologies for new science: Soon X-ray free-electron lasers  

E-print Network

fLasHªThe Free-Electron Laser in Hamburg new technologies for new science: Soon X-ray free-electron to you a new research facility of unprecedented features ­ FLASH, the Free-Electron Laser in Hamburg. Time to explore the femtosecond dynamics of nature Soon X-ray free-electron lasers will enable us

466

LOS VALORES EN LA EDUCACIÓN, DESDE LA PERSPECTIVA DE LOS ALUMNOS DE LAS CUATRO LICENCIATURAS DE LA FACULTAD DE HUMANIDADES, CAMPUS VI DE LA UNIVERSIDAD AUTONOMA DE CHIAPAS  

Microsoft Academic Search

Resumen: Los valores inmersos dentro del proceso de enseñanza-aprendizaje, pernean el ambiente educativo y el quehacer escolar, sin que exista explícitamente dentro de un plan de estudios qué tipo de valores deben de abordarse, además de que éstos son empleados de acuerdo a las circunstancias del entorno escolar y facilitan la formación humanista del sujeto, éste, a través de la

RITA VIRGINIA; RAMOS CASTRO; MARISOL DE JESÚS; MANCILLA GALLARDO; Y MARÍA MINERVA; LÓPEZ GARCÍA

467

Assembling a Nevada 3-d velocity model: earthquake-wave propagation in the Basin & Range, and seismic shaking predictions for Las Vegas  

E-print Network

. For Las Vegas the principal earthquake hazard is from the Furnace Creek fault system, capable of M7 geologic and geotechnical data sets with gridding, modeling, and output specifications into portal packs in Nevada urban areas, the 3-d model assembles several data sets at a wide variety of scales, from regional

468

Long-term continuous measurement of near-road air pollution in Las Vegas: Seasonal variability in traffic emissions impact on local air quality  

EPA Science Inventory

Excess air pollution along roadways is an issue of public health concern and motivated a long-term measurement effort established by the U.S. Environmental Protection Agency in Las Vegas, Nevada. Measurements of air pollutants ? including black carbon (BC), carbon monoxide (CO),...

469

Summary of chemical data from onsite and laboratory analyses of groundwater samples from the surficial aquifer, Las Vegas, Nevada, April and August 1993 and September 1994  

USGS Publications Warehouse

Samples were collected from groundwater wells in and about the city of Las Vegas, Nevada, and were analyzed for selected major, minor and trace constituents. Analyses of blank and reference samples are summarized as mean and standard deviation values for all positive results.

Reddy, Michael M.; Gunther, Charmaine D.

2012-01-01

470

Full House: The Las Vegas building boom has stretched the creativity and resources of the fastest-growing school district in the nation. Edutopia, September/October 2004  

ERIC Educational Resources Information Center

This once sleepy community, founded by Mormon missionaries in 1855 and jumpstarted by gambling 85 years later, now gobbles up real estate faster than a conventioneer chowing down at a midnight buffet. Every day of the week, two acres of Las Vegas area land are developed for commercial or residential use in a frenetic drive to accommodate the…

Furger, Roberta

2004-01-01

471

Exploring the effects of population growth on future land use change in the Las Vegas Wash watershed: an integrated approach of geospatial modeling and analytics  

EPA Science Inventory

The Las Vegas Valley metropolitan area is one of the fastest growing areas in the southwestern United States. The rapid urbanization has led to many environmental problems. For instance, as population growth and urbanization continue, there will be a problem with water shortage. ...

472

School Resegregation in the Mississippi of the West: Community Counternarratives on the Return to Neighborhood Schools in Las Vegas, 1968-1994  

ERIC Educational Resources Information Center

Background: School desegregation and resegregation in the Mountain West remain understudied despite the substantial impact the region's growth and demographic change have had on racial balance and diversity in schools. Home to the largest school district in the Mountain West and fifth largest school district in the country, Las Vegas's…

Horsford, Sonya Douglass; Sampson, Carrie; Forletta, Felicia

2013-01-01

473

Gestación y desarrollo de la hegemonía de las formas y mecanismos de valorización financiero y especulativo: desde la época de 1970 hasta la crisis ac  

Microsoft Academic Search

En este trabajo se analiza la gestación y el desarrollo general en el plano de la economía mundial de la hegemonía de las formas y los mecanismos de valorización financieros y especulativos desde la década de 1970 hasta la crisis actual, identificando sus distintas etapas. Asimismo, se examina el curso de la crisis actual: el inicio de la recesión mundial

Abelardo Mariña Flores; Giannina Ninnette Torres Ramírez

2010-01-01

474

Impacto Económico Y Social Del Proyecto Patios Productivos Implementado Por Las Comunidades Vulnerables De Los Departamentos De Bolívar, Córdoba Y Suc  

Microsoft Academic Search

La inseguridad alimentaria, la pobreza y el desmejoramiento del medio ambiente, son algunos de los mayores desafíos que las ciudades han tenido que afrontar, aun con mayor ímpetu desde principios del siglo XXI. Al respecto se han desarrollado programas y proyectos, como el de Patios Productivos, para hacerle frente a la anterior situación; el propósito de la presente investigación fue

Andrea Acevedo Flórez; Adriana Morales Botett; Catalina Ramos Garcés

2010-01-01

475

Explorations of Colleges, Universities, and Career Training Centers in Las Vegas, Nevada: Creating Educational and Training Programs for Displaced Workers to Learn Marketable Employment Skills  

ERIC Educational Resources Information Center

The city of Las Vegas, Nevada has experienced a slowdown in tourism, a drop in property taxes and consolidated tax revenue used to support the city's operating budget, and a lack of economic diversification. Because of these changes, the ability of displaced workers to learn marketable employment skills continues to be an important issue for…

Gonyea, Jacob Patrick

2012-01-01

476

Reproductive Responses of Common Carp Cyprinus carpio in Cages to Influent of the Las Vegas Wash in Lake Mead, Nevada, from late Winter to early Spring  

EPA Science Inventory

To investigate the potential for contaminants in Las Vegas Wash (LW) influent to produce effects indicative of endocrine disruption in vivo, adult male and female common carp were exposed in cages for 42-48 d at four sites and two reference locations in Lake Mead....

477

La judicializacin del caso de la pldora del da despus en Chile: las tensiones sobre el rol de la mujer y la cuestin tcnica1  

E-print Network

que serán supeditadas al contexto social en cual la política se inscribe. Introducción El Chile de la1 La judicialización del caso de la píldora del día después en Chile: las tensiones sobre el rol de en torno a la introducción de la píldora del día después en Chile. Esta discusión se posicionó en la

Paris-Sud XI, Université de

478

APLICACIÓN DEL MÉTODO DE CÁLCULO ABC EN LAS ENTIDADES DEL MINISTERIO DE EDUCACIÓN SUPERIOR DE CUBA PARA LA DETERMINACIÓN DE COSTOS DE FORMACIÓN DE PROFESIONALES  

Microsoft Academic Search

En Cuba, el Ministerio de Educación Superior (MES) comprende todas las universidades del país, los centros de investigaciones y empresas de producciones y servicios asociadas a la educación y la investigación. El sistema de enseñanza gratuito ha contribuido a la no determinación de los costos de formación de profesionales hasta el momento, lo cual es de vital importancia conocer a

Tairí Alvarez Jiménez

2008-01-01

479

Modelos teóricos que nos ayudan a comprender el gobierno de las sociedades cooperativas, una apuesta por el enfoque de los stakeholders  

Microsoft Academic Search

En la actualidad, el entorno competitivo es cada vez más incierto y complejo. Las características de los mercados actuales hacen que sea cada vez más difícil conseguir una ventaja competitiva sostenible en el tiempo para la empresa, por lo que hay que innovar en formas de gestión y de gobierno para ser competitivo. De esta manera, se está produciendo un

Cristina Pedrosa Ortega

2009-01-01

480

Los orígenes y las trayectorias empresariales de dos laboratorios argentinos a lo largo del siglo XX: La Fármaco Argentina y Roux Ocefa  

Microsoft Academic Search

En este trabajo se analiza las trayectorias empresariales de dos laboratorios argentinos a lo largo del siglo XX: La Fármaco Argentina S.A. y Roux Ocefa S.A. El propósito es estudiar el desenvolvimiento de ambas firmas durante ese período, para identificar y comparar el comportamiento de los principales indicadores con que hemos definido la cultura empresarial. La capacidad para mantenerse en

Ana Pfeiffer; Mónica Campins

1999-01-01

481

Gasto en I+D, desarrollo económico y empleo en las regiones españolas y europeas\\/Research Expenditure, Economic Development and Employment in Spanish and European Regions  

Microsoft Academic Search

En este artículo analizamos las principales diferencias regionales que existen en España y en Europa respecto al gasto en Investigación y Desarrollo, I+D, y la importancia que tiene el capital humano, tanto en Educación como en Investigación, para impulsar la producción y el empleo. Analizamos los datos correspondientes a 151 regiones de 25 países europeos en el año 2000 y

E. AGUAYO

2005-01-01

482

PROCEEDINGS OF CONFERENCE ON ENVIRONMENTAL QUALITY SENSORS (2ND) HELD AT NATIONAL ENVIRONMENTAL RESEARCH CENTER, LAS VEGAS, NEVADA ON OCTOBER 10-11, 1973  

EPA Science Inventory

This report contains the papers presented at the Second Conference on Environmental Quality Sensors, held at the U.S. Environmental Protection Agency's National Environmental Research Center, Las Vegas, Nevada, on October 10 and 11, 1973. The papers covered such topics as: aircra...

483

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu http://rebelmail.unlv.edu/drive  

E-print Network

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu http://rebelmail.unlv.edu/drive http://drive.google.com/a/unlv.nevada.edu Google Docs Quick Reference Guide Create New Documents 1. From your Drive homepage, click Create new

Walker, Lawrence R.

484

Source: http://sites.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Change Your Site's Theme, Colors, and Fonts.  

E-print Network

Source: http://sites.google.com/support/ University of Nevada, Las Vegas Office of Information.0+ Firefox 3.6 + Google Chrome http://rebelmail.unlv.edu/site http://sites.google.com/a/unlv.nevada.edu Google Sites Quick Reference Guide Create a Site 1. From your Google Sites homepage, click on the Create

Walker, Lawrence R.

485

Source: http://mail.google.com/mail/help/chat.html University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Chat Interface  

E-print Network

Source: http://mail.google.com/mail/help/chat.html University of Nevada, Las Vegas Office, AIM, or an open service that is part of the Google Talk network, they will be able to chat with you-in chat. Chat from your desktop: PC users can download the Google Talk Client at http://www.google

Walker, Lawrence R.

486

Source: http://groups.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu What can I do with Groups?  

E-print Network

Source: http://groups.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu What can I do with Groups? Google Groups makes it easy to communicate own online discussion forum and where members can share information. Using Google Groups, you can

Walker, Lawrence R.

487

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Upload Files and Folders into Google Drive  

E-print Network

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Upload Files and Folders into Google Drive You can upload and convert existing Microsoft PowerPoint presentations into Google Drive for online editing and sharing. Presentations convert

Walker, Lawrence R.

488

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Upload Files and Folders into Google Drive  

E-print Network

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Upload Files and Folders into Google Drive You can upload and convert the following file types into Google Drive for online editing and sharing. Documents: Microsoft Word, Open

Walker, Lawrence R.

489

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Upload Files and Folders into Google Drive  

E-print Network

Source: http://drive.google.com/support/ University of Nevada, Las Vegas Office of Information Technology http://oit.unlv.edu Upload Files and Folders into Google Drive You can upload and convert existing Microsoft Excel spreadsheets, Comma-Separated-Value files (.csv), or plain text files (.txt) into Google

Walker, Lawrence R.

490

APLICACIÓN DE LAS DIFERENCIAS FINITAS PARA EL FLUJO DE CONTAMINANTES EN EL ACUÍFERO DE AYAMONTE APPLICATION OF FINITE DIFFERENCES FOR POLLUTANTS FLOW IN THE AYAMONTE WATER BEARER  

Microsoft Academic Search

RESUMEN Si planteamos un modelo para el flujo de aguas subterráneas en un acuífero, implícitamente se modeliza el flujo de contaminantes móviles disueltos; teniendo en cuenta esta premisa, nuestro análisis del flujo de contaminan- tes en el acuífero de Ayamonte quedará representada en el estudio del flujo de las aguas subterráneas en un medio hidrogeológico estable y uniforme, condiciones que

Alfonso Romero Baylón; Daniel Lovera Dávila

491

¿Contribuyen las reformas al progreso social?, el caso de los servicios de acueducto y alcantarillado y la mortalidad infantil en Colombia 1990-2004  

Microsoft Academic Search

Este trabajo analiza el impacto de las reformas en la prestación de los servicios de acueducto y alcantarillado en Colombia, sobre la mortalidad infantil y la cobertura de los servicios. Específicamente, se definió un indicador de reforma a partir de la entrada de un prestador diferente al gobierno local. Utilizando una metodología de diferencias en diferencias se estimó el efecto

Claudia Marcela Granados Vergara

2008-01-01

492

The 2000 International Conference on Artificial Intelligence (IC-AI'2000) June 26 -29, 2000 Monte Carlo Resort, Las Vegas, Nevada  

E-print Network

Carlo Resort, Las Vegas, Nevada 1 Verification of Agent Behavioral Models Timothy H. Lacey and Scott A, behavior, concurrent, verification The views expressed in this article are those of the authors and do Government. Abstract Intelligent software agents are becoming very popular. They are ideal for solving

Deloach, Scott A.

493

Formas de inclusin y exclusin de las minoras sexuales en la ciudad Seminario Internacional "Construccin de Ciudad desde la Diversidad", Bogot, 9 de  

E-print Network

1 Formas de inclusión y exclusión de las minorías sexuales en la ciudad Seminario Internacional construcción de zonas identificables, de tolerancia, residencia y/o comercios LGBT; no representarían sino-13Oct2013 Author manuscript, published in "Seminario Internacional "Construcción de ciudad desde la

Paris-Sud XI, Université de

494

Six month progress report on the Waste Package Project at the University of Nevada, Las Vegas, July 1991--January 1992: Management, quality assurance and overview  

SciTech Connect

The progress of the waste package project at the University of Nevada, Las Vegas was the subject of this report. It covered aspects of management and quality assurance, container design, application of ASME Pressure Vessel Codes, structural analysis of containers, design of rock tunnels for storage, and heat transfer phenomena. (MB)

Ladkany, S.G.

1991-01-01

495

Six month progress report on the Waste Package Project at the University of Nevada, Las Vegas, July 1991--January 1992: Management, quality assurance and overview  

SciTech Connect

The progress of the waste package project at the University of Nevada, Las Vegas was the subject of this report. It covered aspects of management and quality assurance, container design, application of ASME Pressure Vessel Codes, structural analysis of containers, design of rock tunnels for storage, and heat transfer phenomena. (MB)

Ladkany, S.G.

1991-12-31

496

Instituciones al Servicio de los Hispanos están a la vanguardia de la investigación de las desigualdades en salud por cáncer en la comunidad latina  

Cancer.gov

Varias Instituciones al Servicio de los Hispanos forman parte de un grupo de escuelas profesionales y universidades que se han asociado con el Instituto Nacional del Cáncer (NCI) y cierto número de centros oncológicos regionales para abordar el tema de las desigualdades en salud por cáncer que afectan a la comunidad latina.

497

A McOndo Writer's Take on Literature in the Era of Audiovisual and Digital Communication: The Case of Alberto Fuguet's "Las Peliculas de mi vida"  

ERIC Educational Resources Information Center

Alberto Fuguet, one of the leaders of the McOndo writers who seek cultural direction from the United States and exploit mass-media formulas, is a polarizing figure in contemporary Latin American culture. His most recent full-length novel, the semi-autobiographical "Las peliculas de mi vida" (2003), has led many to conclude that Fuguet is simply a…

Maier, Linda S.

2011-01-01

498

Analysis of the real estate market in Las Vegas: Bubble, seasonal patterns, and prediction of the CSW indexes  

E-print Network

We analyze 27 house price indexes of Las Vegas from Jun. 1983 to Mar. 2005, corresponding to 27 different zip codes. These analyses confirm the existence of a real-estate bubble, defined as a price acceleration faster than exponential, which is found however to be confined to a rather limited time interval in the recent past from approximately 2003 to mid-2004 and has progressively transformed into a more normal growth rate comparable to pre-bubble levels in 2005. There has been no bubble till 2002 except for a medium-sized surge in 1990. In addition, we have identified a strong yearly periodicity which provides a good potential for fine-tuned prediction from month to month. A monthly monitoring using a model that we have developed could confirm, by testing the intra-year structure, if indeed the market has returned to ``normal'' or if more turbulence is expected ahead. We predict the evolution of the indexes one year ahead, which is validated with new data up to Sep. 2006. The present analysis demonstrates t...

Zhou, Wei-Xing

2007-01-01

499

The Remote Measurement of Carbon Dioxide by the CO2LAS Instrument during the 2011 ASCENDS Field Campaign  

NASA Astrophysics Data System (ADS)

The Carbon Dioxide Laser Absorption Spectrometer, CO2LAS, is a laser based instrument developed by the Jet Propulsion Laboratory for the remote measurement of the column weighted carbon dioxide concentration from an aircraft. It has undergone a number of developmental and test flights, the most recent of which which was conducted from the NASA DC-8 aircraft during the summer of 2011 as part of the Active Sensing of CO2 Emissions through Nights, Days, and Seasons, ASCENDS, Earth Science Decadal Survey Mission Development Studies. We present refined results from two flights conducted during that campaign as well as new results from other flights during that campaign. We demonstrate an improvement on our ability to measure CO2 drawdown due to crop activity during flights over the great plains area, revise our ability to make CO2 column measurements over complex terrain in the presence of snow and demonstrate high spatial resolution measurements of CO2 plumes from individual stack clusters of the Four Corners Power plant. In addition we describe improved algorithms that allow us to discriminate against cloud contamination in the instrument field of view without requiring a range resolved measurement. We will conclude with a brief summary of instrument improvements and plans for future campaigns.

Spiers, G. D.; Menzies, R. T.; Jacob, J. C.; Geier, S.

2012-12-01

500

late Pleistocene and Holocene pollen record from Laguna de las Trancas, northern coastal Santa Cruz County, California  

USGS Publications Warehouse

A 2.1-m core from Laguna de las Trancas, a marsh atop a landslide in northern Santa Cruz County, California, has yielded a pollen record for the period between about 30,000 B. P. and roughly 5000 B. P. Three pollen zones are recognized. The earliest is characterized by high frequencies of pine pollen and is correlated with a mid-Wisconsinan interstade of the mid-continent. The middle zone contains high frequencies of both pine and fir (Abies, probably A. grandis) pollen and is correlated with the last full glacial interval (upper Wisconsinan). The upper zone is dominated by redwood (Sequoia) pollen and represents latest Pleistocene to middle Holocene. The past few thousand years are not represented in the core. The pollen evidence indicates that during the full glacial period the mean annual temperature at the site was about 2°C to 3°C lower than it is today. We attribute this small difference to the stabilizing effect of marine upwelling on the temperature regime in the immediate vicinity of the coast. Precipitation may have been about 20 percent higher as a result of longer winter wet seasons.

Adam, David P.; Byrne, Roger; Luther, Edgar

1981-01-01