990 resultados para 126-792


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Número monográfico publicado bajo el título:" Mendia, gizartea eta kultura. Montaña, sociedad y cultura. Montagne, societé et culture".

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The objective of the study described here was to determine the effect on variable-leaf watermilfoil of various combinations of triclopyr concentrations and exposure times using dosage rates that controlled Eurasian watermilfoil under laboratory and field conditions (Netherland and Getsinger 1992, Getsinger et al. 1997, Petty et al. 1998).

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Helburuak: Liburu honek Gailuen Elektronika irakasgaian azken urteotan egin diren azterketak jasotzen ditu. Hortaz, ikasleek azterketak prestatzeko eta, oro har, elektronika ikasteko oso baliagarritzat jotzen dugu. Irakasgaiaren helburu nagusia diren oinarrizko osagaien ezaugarriak eta funtzionamenduaren printzipioak lantzen dira. Norentzat izan daiteke baliagarria: Testua Ingeniaritza Eskolako Lehenengo Ikasturteko ikasleentzat bereziki prestatu da, baina gailuen funtzionamendua eta anplikazio-sistema sinpleak aztertzen dituzten ariketak jasotzen dituenez, oso baliagarria gerta daiteke, orobat, edozein maila eta titulazioko Elektronika-ikasleentzat -edota ikasle horiei irakatsi behar dietenentzat.

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Validated by comparison with DNS, numerical database of turbulent channel flows is yielded by Large Eddy Simulation (LES). Three conventional techniques: uv quadrant 2, VITA and mu-level techniques for detecting turbulent bursts are applied to the identification of turbulent bursts. With a grouping parameter introduced by Bogard & Tiedemann (1986) or Luchik & Tiederman (1987), multiple ejections detected by these techniques which originate from a single burst can be grouped into a single-burst event. The results are compared with experimental results, showing that all techniques yield reasonable average burst period. However, uv quadrant 2 and mu-level are found to be superior to VITA in having large threshold-independent range.

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Escritos publicados de 18 de junho a 2 de julho de 1906, no Jornal do Commercio, sob o título Em prol da verdade, respondendo a uma critica do Sr. Gumersindo Bessa à Réplica do Amazonas no litígio pendente com a União acerca do Acre Setentrional.

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IN this paper, the engraving process with Q-Switched Nd:YAG laser is investigated. High power density is the pre- requisition to vapor materials, and high repetition rate makes the engraving process highly efficient. An acousto- optic Q-Switch is applied in the cavity of CW 200 W Nd:YAG laser to achieve the high peak power density and the high pulse repetition rate. Different shape craters are formed in a patterned structure on the material surface when the laser beam irradiates on it by controlling power density, pulse repetition rate, pulse quantity and pulse interval. In addition, assisting oxygen gas is used for not only improving combustion to deepen the craters but also removing the plasma that generated on the top of craters. Off-focus length classified as negative and positive has a substantial effect on crater diameters. According to the message of rotating angle positions from material to be engraved and the information of graph pixels from computer, a special graph is imparted to the material by integrating the Q- Switched Nd:YAG laser with the computer graph manipulation and the numerically controlled worktable. The crater diameter depends on laser beam divergence and laser focal length. The crater diameter changes from 50 micrometers to 300 micrometers , and the maximum of crater depth reaches one millimeter.

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This report summarizes the results of a characterization of chemical contaminants in the sediments in southwest Puerto Rico. The report is part of a project to integrate various analytical specialties to assess linkages between chemical contaminants and the condition of coral reefs. In this phase of the project, over 120 chemical contaminants were analyzed in sediments collected, including a number of organic (e.g., hydrocarbons), inorganic (e.g., metals), and biological (bacterial) compounds/analytes. The report also provides a preliminary analysis of the association between sediment contaminants and coral species richness. Overall, the levels of chemical contaminants in the study area between Guanica Bay and the town of La Parguera were fairly low. At most of the sites sampled, particularly adjacent to the town of La Parguera, concentrations of organic and inorganic contaminants were below the median values from NOAA’s National Status and Trends Program, which monitors the Nation’s coastal and estuarine waters for chemical contaminants. Elevated levels of a number of contaminant classes were seen at the two sites sampled within Guanica Bay. An initial analysis of modeled PAH (hydrocarbon) data and coral species richness (reef building species) indicated a strong negative correlation between the presence of PAHs in the sediments and coral species richness. Additional work is needed to assess possible reasons for this observed pattern. (PDF contains 126 pages).

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El tema que vamos a desarrollar se orienta a la satisfacción y fidelización de la clientela como objetivo esencial de la empresa, lo que pemitirá aumentar la competitividad y pilotar la organización por la senda de la máxima eficiencia posible, en un enfoque sistématico de mejora continua hacia la excelencia empresarial.

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La biblioteca de la Universidad del País Vasco está realizando un gran esfuerzo para desarrollar servicios de Referencia e Información Bibliográfica que acerquen a nuestros usuarios la información científica y técnica que necesiten para su labor docente e investigadora. Muestra de ello es: la atención personalizada,cátalogo colectivo de publicaciones periódicas, formación en el uso de los catálogos automatizados y acceso a bases de datos.

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Las dificultades de los gobiernos occidentales para mantener los Sistemas de Bienestar han promovido la privatización en la gestión de los servicios. Las organizaciones del Tercer Sector, en su papel como proveedoras de servicios, deben adaptarse a los cambios provocados por las demandas sociales y tratar de fomentar su participación en la configuración de los sistemas, pero siendo capaces de demostrar la eficiencia con la que desarrollan sus actividades. Ante este reto, los sistemas de gestión de la calidad ofrecen una oportunidad a las organizaciones del Tercer Sector, aunque por parte de las entidades que conforman el sector se mantienen ciertas reticencias sobre la validez del modelo a causa de su origen empresarial. Este trabajo de investigación tiene por objetivo el estudio de los procesos de implantación de un sistema de Gestión de la Calidad en las organizaciones del Tercer Sector Social. Para ello se llevó a cabo un análisis de casos múltiples, eligiendo cuatro organizaciones en diferentes estadios de implantación. El tratamiento de la información se realizó mediante el software de análisis cualitativo Atlas.ti y, para la evaluación de cada caso, se siguió el sistema de valoración del EFQM, analizando los diferentes elementos de los agentes facilitadores. Los principales resultados muestran la importancia de las alianzas, el enfoque en el usuario así como en las personas, los cuales son considerados como elementos clave para estas organizaciones. El trabajo muestra las conclusiones para cuatro casos, pero sugiere la importancia de establecer las relaciones entre los agentes facilitadores así como un análisis causal para futuras líneas de investigación.

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Estimates of length at birth and early postnatal growth are made for the northern and southern populations of the offshore spotted dolphin in the offshore eastern tropical Pacific. Length at birth is estimated to be 85.4 cm for the northern population and 83.2 cm for the southern population. Analyses of series of monthly distributions of length revealed two cohorts born each year in the northern population, at least in the northern inshore part of its geographic range, but only one cohort born each year in the southern population. Growth curves fitted to the means of the monthly distributions of length gave estimates of length at 1 year of 126.2 and 132.6 cm and length at 2 years of 154.3 and 154.9 cm for the two cohorts in the northern population. and length at 1 year of 127.9 cm for the southern population. A growth curve fitted to lengths and ages (in dental growth layer groups) from the northern population gave estimates of lengths at 1 and 2 years of 123.0 and 143.0 cm, respectively.

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本书阐明了板壳断裂理论的基础。论证了Reissner型板壳断裂理论的科学性、经典板壳断裂理论的缺陷及在一定范围内仍具有的实用价值;介绍了作者所创意的研究Reissner型板壳断裂纹尖端场的方法等。

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