To explore bidirectional regulatory interactions between interferons and autocrine polypeptide factors, we examined the modulation of expression of transforming growth factor-a and 2’,5’-oligoadenylate synthetase activity in A431 epidermoid carcinoma cells after treatment with interferon-y and transforming growth factor-a. Treatment of A431 cells with interferon-y increased steady state levels ...

In this work, we investigated the performance of Ag-alumina catalysts for the SCR of NO with methane in gas streams with a high concentration of SO2, typical of coal-fired power plant flue gas. Agalumina catalysts were prepared by co-gelation and nitric-acid leaching was used to remove weakly bound silver species from the catalyst surface [1, 2]. We found that SO2 has a dramatic inhibitory effe...

Cefaratti, Christie, Andrea Romani, and Antonio Scarpa. Characterization of two Mg21 transporters in sealed plasma membrane vesicles from rat liver. Am. J. Physiol. 275 (Cell Physiol. 44): C995–C1008, 1998.—The plasma membrane of mammalian cells possesses rapid Mg21 transport mechanisms. The identity of Mg21 transporters is unknown, and so are their properties. In this study, Mg21 transporters ...

Nonlinear vortex excitations in models for layered or two-dimensional (2D) magnets [1] have attracted much study not only for their role in the thermodynamics of the Berezinskii-Kosterlitz-Thouless vortex-unbinding transition [2,3], but more recently because their microscopic dynamic behavior is not fully understood. The dynamics of individual vortices continues under study for ferromagnets (FM...

To explore bidirectional regulatory interactions between interferons and autocrine polypeptide factors, we examined the modulation of expression of transforming growth factor-a and 2’,5’-oligoadenylate synthetase activity in A431 epidermoid carcinoma cells after treatment with interferon-y and transforming growth factor-a. Treatment of A431 cells with interferon-y increased steady state levels ...

Small spacecraft platforms are a promising low-cost approach to accelerate exploration of small bodies, addressing the space community’s interest in origin science, planetary resources, and planetary defense. However, they can be challenging platforms for detecting and imaging low brightness targets. Difficulties include constrained bandwidth, which limits the volume of data that can be downlin...

In the coming decade, astronomical surveys of the sky will generate tens of terabytes of images and detect hundreds of millions of sources every night. The study of these sources will involve computation challenges such as anomaly detection and classification and moving-object tracking. Since such studies benefit from the highest-quality data, methods such as image co-addition, i.e., astrometri...

We present MOPEX a software package for image mosaicking and point source extraction. MOPEX has been developed for the Spitzer Space Telescope. This paper concentrates on the mosaicking aspects of the package. MOPEX features the use of several interpolation techniques, coaddition schemes, and robust and flexible outlier detection based on spatial and temporal filtering. A number of original alg...

The Spitzer Space Telescope Infrared Array Camera (IRAC) is the only space-based instrument currently capable of continuous long duration monitoring of brown dwarfs to detect variability and characterize their atmospheres. Any such studies are limited, however, by the accuracy to which we know the positions and distances to these targets (most of which are newly discovered and therefore do not ...