The acoustic pressure sensitivities of hollow-core photonic bandgap fibers (HC-PBFs) with different thicknesses of silica outer-cladding and polymer jacket were experimentally investigated. Experiment with a HC-PBF with 7 μm-thick silica outer cladding and 100 μm-thick Parylene C jacket demonstrated a pressure sensitivity 10 dB higher than the commercial HC-1550-02 fiber and 25 dB higher than a...

This study provides a detailed description of cocaine-and amphetamine-regulated transcript (CART) distribution and the co-localization pattern of CART and gonadotropin releasing hormone (GnRH), somatostatin (SOM), neuropeptide Y (NPY), cholecystokinin (CCK), and substance P (SP) in the preoptic area (POA) of the domestic pig. The POA displays a low density of immunoreactive cells and rich immun...

Examination of asbestos fibers by electron microscopical techniques enables the observer to distinguish among the fiber types by morphological and structural characteristics. Chrysotile asbestos fibers are composed of bundles of fibrils. Fibers are often curvilinear with splayed ends. Individual fibrils consist of a central capillary defined by an electron dense crystalline wall. With increasin...

The densities of fibers of different sizes were calculated in ten regions of the corpus callosum of twenty human brains (ten females, ten males). Light microscopic examination revealed a consistent pattern of regional differentiation of fiber types in the corpus callosum. Thin fibers are most dense in the anterior corpus callosum (genu), and decrease in density posteriorly towards the posterior...

The distribution of acetylcholinesterase in the canine kidney was studied by the histochemical method of Karnovsky and Roots and compared to the distribution of adrenergic fibers studied with the fluorescence histochemical method of Falck and Hillarp. Specific inhibitors of nonspecific cholinesterase and acetylcholinesterase were used to differentiate between the two enzymes. In the hilus, acet...

correspond to the EM counterpart retrograde degeneration that one sees with Fink-Heimer techniques? LUND: The Fink-Heimer stains demonstrate dense degeneration and show degenerating axons, terminals, and cell bodies. It might be reasonably expected, therefore, that the postsynaptic dense degeneration shown here after cortical lesions would be stainable by the Fink-Heimer methods. CURTIS: What a...

Orphanin FQ/nociceptin (OFQ/N) and its receptor (ORL-1) have been proposed to play a role in the regulation of hearing. In this study, we investigate the localization of OFQ/N-like immunoreactivity in the mammalian cochlea. Sprague-Dawley rat temporal bones were harvested and decalcified. The organ of Corti was microdissected, and indirect immunohistochemistry was performed using a rabbit polyc...

Electron microscope studies of collagen have dealt, for the most part, with the morphology of the mature or completely formed fibers.' I t has been shown that fibers from a variety of sources have the same characteristic periodic structure which consists of regularly spaced bands of greater density to electrons, arranged crosswise to the long axis of the fibers. The combination of a dense (A ba...

Direct stimulation of single muscle fibers from Xenopus laevis at a frequency of 1 Hz results in a decline of the peak isometric twitch tension after about 200 twitches. Fibers were chemically fixed in glutaraldehyde after a varying number of twitches and at several fatigue levels, and the ultrastructural appearance was compared with that of resting fibers treated by identical fixation methods....