Healthy, Wealthy, and Wise? Socioeconomic Status and Morbidity/Mortality

No abstract.

Powering the superwind in NGC 253

NGC 253 is a prototypical moderate nuclear starburst galaxy. It is a barred SBc spiral galaxy at a distance of approximately 3 Mpc and can be studied on scales down to 15 pc in the optical and near IR. It is a bright IRAS source with a flux of 1000 Jy at 60 microns and a FIR luminosity of 3 x 10(exp 10) solar luminosity. It has a strong Br(gamma) emission line, a signature of ongoing massive star formation and deep CO absorption bands, which are indicative of the dominance of red supergiants in the near IR. It contains a population of compact radio sources, similar to those seen in M82. Optical spectra show that the nucleus is heavily reddened, with a Balmer decrement of approximately 30. NGC 253 possesses a 'superwind,' seen both in x-ray emission and in optical line emission. Nuclear ejection was first suggested to explain the kinematics of the nuclear region. We have obtained J, H, and K images of the entire galaxy at 1.3 arcsec/pixel (18 pc/pixel) using the superconducting quantum interference device (SQUID) on the KPNO 1.3 m. We have constructed a mosaic of 180 s exposures which traces the galaxy over much of its optical extent. The data were shifted, rotated, magnified, and calibrated following normal practice

Is a local bar a good place to find a companion? The near infrared morphology of Maffei 2

Maffei 2 is one of the closest large spiral galaxies lying just beyond the Local Group. It would probably be one of the most heavily studied galaxies in the sky were it not for the approximately 5 magnitudes of visual extinction resulting from its position behind the Galactic plane. It is the site of a burst of nuclear star formation indicated by strong infrared and radii continuum emission. Interferometric maps of CO-12 and CO-13 emission indicate that star formation is associated with a barlike structure consisting of arms of molecular gas that extend from within approximately 50 pc of the dynamical center out to a radius of at least 500 pc. HI maps have shown the galaxy to have an angular extent of approximately 15 feet and a neutral gas mass typical of a large spiral galaxy

«El efectivo es bueno para comer»: autosuficiencia e intercambio en los orígenes de los Estados Unidos de América

El carácter de la economía agrícola norteamericana en el periodo colonial y la primera mitad del siglo XIX es examinado en este artículo. El escrito escapa a cualquiera de los dos extremos generalizantes del debate: por tanto, no se limita a discutir si las economías eran autosubsistentes o altamente comercializadas. El autor presenta nuevas fuentes primarias, hace una lectura cuidadosa de la literatura existente y se apoya en las categorías de la economía política y la antropología, descartando la utilización de la economía neoclásica la cual considera ahistórica e incapaz de entender los cambios socioeconómicos y las diferencias culturales

Short Course P2: Advanced Mechanical Seals 201 - Demystifying Piping Plans and Support Systems

Short Cours

Panel Discussion of the South Carolina Hydrographic Data Users Group

2010 S.C. Water Resources Conference - Science and Policy Challenges for a Sustainable Futur