A study of time dispersion in different indoor line-ofsight radio channels in the 492–862 MHz band is presented in this paper. A combined method to filter the noise in the measured impulse response is described. The effect of frequency windowing on the impulse responses and the root mean square (rms) delay spread is also investigated. It has been found that, in general, the use of windows with ...

Multi-electrode array recordings of spike and local field potential (LFP) activity were made from primary auditory cortex of 12 normal hearing, ketamine-anesthetized cats. We evaluated 259 spectro-temporal receptive fields (STRFs) and 492 frequency-tuning curves (FTCs) based on LFPs and spikes simultaneously recorded on the same electrode. We compared their characteristic frequency (CF) gradien...

Water intake was described and quantified in samples of urban Guatemalan schoolchildren stratified by gender and socio-economic status. The frequency of consumption and quantity of plain water drinking was estimated from one-day pictorial registries of all beverages, foods and snacks consumed over a 24-h period collected from 449 3rd and 4th graders from two social classes: 230 from higher SES ...

IMPORTANCE Middle ear disease is the primary cause of hearing loss in children and has a significant impact on language development and academic performance. Multiple prognostic factors have previously been examined, but there is little published data regarding frequency-specific hearing outcomes. OBJECTIVE To examine the relationship between type I tympanoplasty in a pediatric population and...

INTRODUCTION Adrenal myelolipomas are benign lesions that contain hematopoietic and fatty elements. They are usually hormonally inactive and asymptomatic until they reach large sizes. With the routine use of cross-sectional imaging, these lesions are now being discovered with increasing frequency. MATERIALS AND METHODS We performed a comprehensive review of the literature using the PubMed dat...

Saiko) have been used in Chinese and Japanese herbal medicines for the treatment of chronic hepatitis, nephrosis syndrome, and autoimmune diseases. Yamada et al. and Sun et al. reported that a potent antiulcer pectic polysaccharide (Bupleuran 2IIc) was isolated from the hot-water extract of the roots. Bupleuran 2IIc consists of a galacturonan region, a “ramified” region (PG-1) composed of a rha...

We report on molecular abundances and distributions in a starless dense core L492. We have found that the abundances of carbon-chain molecules such as CCS, C3S, HC3N, HC5N, and HC7N are comparable to those in chemically young dark cloud cores called ”carbon-chain–producing regions”, such as L1495B, L1521B, L1521E, and TMC-1. This is the first dark cloud core with extremely rich in carbon-chain-...

We present narrow-bandwidth submillimeter-wave sky opacity measurements made from the South Pole between 1995 February 9 and November 17, a period that includes an entire Austral winter. These measurements were made with the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO) using a heterodyne receiver tuned to a band that includes the 492 GHz Ðne-structure line of neutral atomic...