Firsts results on particle detection using a novel silicon pixel detector are presented. The sensor consists of an array of 48 squar pixels with 380 lm pitch based on a n–i–p hydrogenated amorphous silicon (a-Si:H) film deposited on top of a VLSI chip. Th deposition was performed by VHF-PECVD, which enables high rate deposition up to 2 nm/s. Direct particle detection using bet particles from Ni...

This letter presents incontrovertible evidence that NGC 5506 is a Narrow Line Seyfert 1 (NLSy1). Our new 0.9–1.4μm spectrum of its nucleus clearly shows the permitted O Iλ1.1287μm line (with full width at half maximum < 2000 km s) and the ‘1 micron Fe II lines’. These lines can only originate in the optically-thick broad line region (BLR) and, among Seyfert nuclei the latter series of lines are...

STUDY OBJECTIVE Local nasal hyperthermia or inhalation of heated water vapor is often recommended as a home remedy for various rhinitis disorders such as the common cold and allergic rhinitis. Inhaled heated vapor treatments and simple saline solution nasal irrigation were investigated for their effect on inflammatory mediator production in nasal secretions. DESIGN Three treatments were given...

We investigate the connection between the equatorial Madden-Julian Oscillation (MJO) and different types of the Northern Hemisphere mid-winter major stratospheric sudden warmings (SSWs), i.e., vortex-displacement and vortex-split SSWs. The MJO-SSW relationship for vortex-split SSWs is stronger than that for vortex-displacement SSWs, as a result of the stronger and more coherent eastward propaga...

Abstract. I review the status of observational determinations of central masses in nearby galactic nuclei. Results from a variety of techniques are summarized, including ground-based and space-based optical spectroscopy, radio VLBI measurements of luminous water vapor masers, and variability monitoring studies of active galactic nuclei. I will also discuss recent X-ray observations that indicat...

A clear sky, daytime retrieval of low-level precipitable water vapor based on the single-layer approximation to radiative transfer equation applied three longwave window channels is described. The algorithm, which simultaneously retrieves skin temperature and air as well, has advantage using satellite radiances only—no ancillary information needed. Application method Geostationary Operational E...

The current–voltage characteristics of a proton exchange membrane (PEM) electrolyzer constructed with an IrRuOx water oxidation catalyst and a Pt black water reduction catalyst, under operation with water vapor from a humidified carrier gas, have been investigated as a function of the gas flow rate, the relative humidity, and the presence of oxygen. The performance of the system with water vapo...

Land surface temperature (LST) has a significant role in the land surface characters on local and global scale. The most important task in estimation of LST from satellite thermal data is removing the effects of atmospheric attenuations, topographic and land surface emissivity. To date, several techniques have been proposed to retrieve LST with various applications, advantages and drawbacks. Th...