A study of the statistics of cosmological black-hole jet sources is applied to EGRET blazar data, and predictions are made for GLAST. Black-hole jet sources are modeled as collimated relativistic outflows with radiation beamed along the jet axis due to strong Doppler boosting. The comoving density dependence of the blazar formation rate (BFR) is assumed to follow the cosmic star formation histo...

All pathogenic Yersinia enterocolitica strains carry the pYV plasmid encoding the Ysc-Yop type III secretion (TTS) system, which operates at 37 degrees C. In addition, biovar 1B Y. enterocolitica strains possess a second, chromosomally encoded, TTS system called Ysa, which operates, at least in vitro, under low-temperature and high-salt (LTHS) conditions. Six open reading frames, sycB, yspB, ys...

Type III secretion (TTS) is an essential virulence function for Shigella flexneri that delivers effector proteins that are responsible for bacterial invasion of intestinal epithelial cells. The Shigella TTS apparatus (TTSA) consists of a basal body that spans the bacterial inner and outer membranes and a needle exposed at the pathogen surface. At the distal end of the needle is a "tip complex" ...

Efficient numerical and parallel methods have been used at Argonne National Laboratory (ANL) to develop petascalable software packages for beam dynamics simulations. This paper is an summary of the numerical methods and parallel algorithms used and developed in the past five years at ANL. It is an extension to the paper “Developing petascalable algorithms for beam dynamics simulations,” on proc...

We identified new pre-main sequence stars in the region of high-latitude molecular clouds associated with the reflection nebula IC 2118, around l ∼ 208◦ and b ∼ −27◦. The stars were selected as T Tauri candidates in objective prism plates obtained with the Schmidt telescope of Konkoly Observatory. Results of spectroscopic follow-up observations, carried out with the FLAIR spectrograph installed...

Infection by Shigella flexneri is characterized by infiltration of neutrophils in the intestinal mucosa and by a strong inflammatory reaction. Although neutrophils are constitutively programmed to die by apoptosis, we show that isolated human neutrophils undergo necrosis 2 h after infection with virulent S. flexneri strain M90T but not with the virulence plasmid-cured strain BS176. This was dem...

In order to plan observing and calibration programs with SIRTF, one of the important ingredients is the absolute brightness of the sky at the time and place of observation. In particular, to judge the feasibility of detection of astronomical sources in the presence of strong foreground signals from the zodiacal light and interstellar cirrus, observers and the science team will require knowledge...

This paper addresses a method for customizing an English-Korean machine translation system from general domain to patent domain. The customizing method includes the followings: (1) extracting and constructing large bilingual terminology and the patent-specific translation patterns, (2) adapting the probabilities of POS tagger trained from general domain to the patent domain, (3) syntactically a...

The Palomar Transient Factory (PTF) is a synoptic sky survey in operation since 2009. PTF utilizes a 7.1 square degree camera on the Palomar 48-inch Schmidt telescope to survey the sky primarily at a single wavelength (R-band) at a rate of 1000-3000 square degrees a night. The data are used to detect and study transient and moving objects such as gamma ray bursts, supernovae and asteroids, as w...