Ciencia y conciencia

1er Premio en la categor??a de Ciencia Ingenier??a y Valores de la novena edici??n de 'Ciencia en Acci??n' organizada por El Consejo Superior de Investigaciones Cient??ficas, la Fundaci??n Espa??ola para la Ciencia y la Tecnolog??a, la Real Sociedad Espa??ola de F??sica, la Real Sociedad Matem??tica Espa??ola y la Universidad Nacional de Educaci??n a Distancia, en 2008. Premio 'Operi Bene Peracto' de la Real Academia Espa??ola de Qu??mica, en su edici??n de 2008

Estrategias para reducir el nivel de contaminanción fisíca en la planta de producción de Pelpak S.A

Este proyecto busca analizar y formular estrategias que permitan reducir la contaminación física por partículas en la planta de producción de la empresa Pelpak S.A. generando una solución que perdure en el tiempo en la medida que se controla, verifica, mantiene e involucra a los procesos organizacionales. Para ello se plantean una serie de estrategias acordes a las necesidades de la empresa a partir de sus características de infraestructura, equipos y planta de producción teniendo como fundamentación teórica la Norma AIB Internacional con atención específica en los apartes que sean relevantes para cumplir con el proyecto. En la formulación de las estrategias, es fundamental garantizar la protección del envase en las etapas de mayor vulnerabilidad relacionada con la exposición a fuentes contaminantes. El alcance de este proyecto abarca la reducción de los cuerpos extraños en la planta, pues estos generan contaminación en el proceso productivo. Para lograr este resultado, se debe determinar el porqué, quiénes, en dónde y cómo se generan los elementos nocivos con el fin de eliminar, mitigar o controlar esta problemática. Esta investigación arrojó ocho estrategias a tratar, en donde el objetivo de cada una es mejorar el entorno en el cual se trabaja, evitar que el envase se contamine y lograr proteger el envase en las etapas del proceso con la identificación de los puntos críticos. El aseo y limpieza para los techos, pisos y paredes es el común denominador de las estrategias planteadas en este estudio.

Influències literàries en el cinema de Woody Allen. 'Influencias literarias en el cine de Woody Allen'.

Resumen de la autora en catalán

Elaboración de un plan estratégico de exportación, comercialización y distribución de abrasivos para el mercado de Costa Rica

En el primer capítulo de este trabajo, se describe cómo es el sector materiales de construcción en nuestro país y su evolución durante los últimos años, en donde Colombia se ha convertido en un país exportador de materiales de construcción. La reactivación que se viene dando en la economía del país, ha propiciado que el sector de construcción, y por ende la producción de insumos, presenten una mejora sustancial con respecto a los últimos años. El segundo capítulo muestra las principales industrias productoras de abrasivos, lo que muestra el nivel de competencia al cual se tiene que enfrentar la empresa cuando comience a incursionar en el mercado de Costa Rica, dentro de las marcas más reconocidas se encuentran Fandelli, 3M, Grupo Manhattan y SG. El tercer capítulo es una descripción de la organización de la empresa y de los productos que fabrica, así como la aplicación y características de cada uno de ellos, que permitan a la misma el desarrollo tanto interno como externo.

Servicios de orientación para el desarrollo de la carrera musical : análisis comparativo.

Resumen basado en el de la publicación

Educar para la paz en un mundo en guerras.

El autor propone, después de lo sucedido el 11 de septiembre en Manhattan, reinventar una didáctica del pacifismo, educar para la paz no es tarea fácil. Propone la elaboración participada de un libro de texto para la paz como área transversal del curriculum.

Spatial patterns of office employment in the New York region

This study analyzes the regional spatial dynamics of the New York region for a period of roughly twenty years and places the effects of the 9/11 terrorist attacks in the context of longer-term regional dynamics. The analysis reveals that office-using industries are still heavily concentrated in Manhattan despite ongoing decentralization in many of these industries over the last twenty years. Financial services tend to be highly concentrated in Manhattan whereas administrative and support services are the least concentrated of the six major office-using industry groups. Although office employment has been by and large stagnant in Manhattan for at least two decades, growth of output per worker has outpaced the CMSA as well as the national average. This productivity differential is mainly attributable to competitive advantages of office-using industries in Manhattan and not to differences in industry composition. Finally, the zip-code level analysis of the Manhattan core area yielded further evidence of the existence of significant spillover effects at the small-scale level.

Intake fraction of nonreactive motor vehicle exhaust in HongKong

The intake fraction (iF) of nonreactive constituents of exhaust from mobile vehicles in the urban area of HongKong is investigated using available monitoring data for carbon monoxide (CO) as a tracer of opportunity. Correcting for regional transport of carbon monoxide into HongKong, the annual-average iF for nonreactive motor vehicle emissions within the city is estimated to be around 270 per million. This estimated iF is much higher than values previously reported for vehicle emissions in US urban areas, Helsinki and Beijing, and somewhat lower than those reported for a densely populated street canyon in downtown Manhattan, New York City, or for emissions into indoor environments. The reported differences in intakefractions in various cities mainly result from the differences in local population densities. Our analysis highlights the importance of accounting for the influence of upwind transport of pollutants when using ambient data to estimate iF for an urban area. For vehicleexhaust in HongKong, it is found that the in/near vehicle microenvironment contributes similarly to the indoor home environment when accounting for the overall iF for children and adults. Keywords Intakefraction; Vehicle emission; Regional pollutant transport; Carbon monoxide; Exposure

Antibiotic resistance genes, integrons and multiple antibiotic resistance in thirty-five serotypes of Salmonella enterica isolated from humans and animals in the UK

Objectives: To examine 397 strains of Salmonella enterica of human and animal origin comprising 35 serotypes for the presence of aadB, aphAI-IAB, aadA1, aadA2, bla(Carb(2)) or pse1, bla(Tem), cat1, cat2, dhfr1, floR, strA, sul1, sul2, tetA(A), tetA(B) and tetA(G) genes, the presence of class 1 integrons and the relationship of resistance genes to integrons and antibiotic resistance. Results: Some strains were resistant to ampicillin (91), chloramphenicol (85), gentamicin (2), kanamycin (14), spectinomycin (81), streptomycin (119), sulfadiazine (127), tetracycline (108) and trimethoprim (45); 219 strains were susceptible to all antibiotics. bla(Carb(2)), floR and tetA(G) genes were found in S. Typhimurium isolates and one strain of S. Emek only. Class 1 integrons were found in S. Emek, Haifa, Heidelberg, Mbandaka, Newport, Ohio, Stanley, Virchow and in Typhimurium, mainly phage types DT104 and U302. These strains were generally multi-resistant to up to seven antibiotics. Resistance to between three and six antibiotics was also associated with class 1 integron-negative strains of S. Binza, Dublin, Enteritidis, Hadar, Manhattan, Mbandaka, Montevideo, Newport, Typhimurium DT193 and Virchow. Conclusion: The results illustrate specificity of some resistance genes to S. Typhimurium or non- S. Typhimurium serotypes and the involvement of both class 1 integron and non-class 1 integron associated multi-resistance in several serotypes. These data also indicate that the bla(Carb(2)), floR and tetA(G) genes reported in the SG1 region of S. Typhimurium DT104, U302 and some other serotypes are still predominantly limited to S. Typhimurium strains.

Scene understanding for auto-calibration of surveillance cameras

In the last decade, several research results have presented formulations for the auto-calibration problem. Most of these have relied on the evaluation of vanishing points to extract the camera parameters. Normally vanishing points are evaluated using pedestrians or the Manhattan World assumption i.e. it is assumed that the scene is necessarily composed of orthogonal planar surfaces. In this work, we present a robust framework for auto-calibration, with improved results and generalisability for real-life situations. This framework is capable of handling problems such as occlusions and the presence of unexpected objects in the scene. In our tests, we compare our formulation with the state-of-the-art in auto-calibration using pedestrians and Manhattan World-based assumptions. This paper reports on the experiments conducted using publicly available datasets; the results have shown that our formulation represents an improvement over the state-of-the-art.

Modeling study of the aspect ratio influence on urban canopy energy fluxes with a modified wall-canyon energy budget scheme

The influence of the aspect ratio (building height/street canyon width) and the mean building height of cities on local energy fluxes and temperatures is studied by means of an Urban Canopy Model (UCM) coupled with a one-dimensional second-order turbulence closure model. The UCM presented is similar to the Town Energy Balance (TEB) model in most of its features but differs in a few important aspects. In particular, the street canyon walls are treated separately which leads to a different budget of radiation within the street canyon walls. The UCM has been calibrated using observations of incoming global and diffuse solar radiation, incoming long-wave radiation and air temperature at a site in So Paulo, Brazil. Sensitivity studies with various aspect ratios have been performed to assess their impact on urban temperatures and energy fluxes at the top of the canopy layer. In these simulations, it is assumed that the anthropogenic heat flux and latent heat fluxes are negligible. Results show that the simulated net radiation and sensible heat fluxes at the top of the canopy decrease and the stored heat increases as the aspect ratio increases. The simulated air temperature follows the behavior of the sensible heat flux. (C) 2010 Elsevier Ltd. All rights reserved.

New York Trade School Building

A group is standing immediately outside the New York Trade School building while students and others pass by. The building was located on East 67th Street in Manhattan.

Dennis Mahoney, Electrician, Consolidated Edison Company, New York

A graduate of the New York Trade School's Electrical program in 1958, Dennis Mahoney is show at work for the Consolidated Edison Company in New York. Caption written on reverse reads "Dennis J. Mahoney is shown closing the Armature Switch of a Rotary Converter in a D.C. substation. The average rotary in our stations has a capacity of 4,200 K.W. and there are 30 such stations in Manhattan with an annual output of 800,000 amperes. Although the D.C. load is gradually being reduced, it can be seen that there is still considerable demand for direct current in Manhattan." Black and white photograph.

Aninhamento em redes bipartidas

We present a nestedness index that measures the nestedness pattern of bipartite networks, a problem that arises in theoretical ecology. Our measure is derived using the sum of distances of the occupied elements in the adjacency matrix of the network. This index quantifies directly the deviation of a given matrix from the nested pattern. In the most simple case the distance of the matrix element ai,j is di,j = i+j, the Manhattan distance. A generic distance is obtained as di,j = (i¬ + j¬)1/¬. The nestedness índex is defined by = 1 − where is the temperature of the matrix. We construct the temperature index using two benchmarks: the distance of the complete nested matrix that corresponds to zero temperature and the distance of the average random matrix that is defined as temperature one. We discuss an important feature of the problem: matrix occupancy. We address this question using a metric index ¬ that adjusts for matrix occupancy

ACUTE 2,4-DICHLOROPHENOXYACETIC ACID INTOXICATION IN CATTLE

The acute toxicity of 2,4-dichlorophenoxyacetic acid (2,4-D) was studied in cattle. Steers were orally treated with 100, 300 or 600 mg 2,4-D/kg. Behavioral alterations, heart and respiratory functions, rectal temperature and ruminal movements were observed at 2, 4, 8, 12, 24, 48, 72 and 96 h after treatments. At these moments, blood and urine samples were collected and serum 2,4-D levels were determined. Results show that animals' vital functions and hematocrit were not modified by the herbicide. Other signs were dose and time-dependent and included motor alterations (weakness, lethargy, decreased general activity) and decreased ruminal movements and proteinuria. The herbicide was rapidly excreted and the intoxication signs were completely reversed. 2,4-D is an herbicide of small toxicological consequences for cattle kept under in natural grazing systems.