The actions of grayanotoxin I, veratrine, and tetrodotoxin on the membrane potential of the Schwann cell were studied in the giant nerve fiber of the squid Sepioteuthis sepioidea. Schwann cells of intact nerve fibers and Schwann cells attached to axons cut lengthwise over several millimeters were utilized. The axon membrane potential in the intact nerve fibers was also monitored. The effects of...

Abstract This paper introduces a pressure sensor catheter with two different measurement principles. A Fabry-Perot- Interferometer at the fiber tip is formed by reflective multilayer membrane of chip. The cavity provides absolute sensing. 20 millimeter before Fiber Bragg Grating integrated for additional temperature sensing components are completely coated silicone mantle 2 mm diameter. signal ...

A new class of PVDF-based membranes suitable for membrane distillation were prepared via electrospinning. The classical fiber morphology PVDF electrospun was changed to generate a beaded structure by tuning the solvent ratio and operating parameters during fabrication. Results showed that increasing N, N-Dimethylacetamide (DMAC) acetone used prepare solution, micron-sized beads can be created w...

one of the most important concerns in tehran municipal landfill is the production of leachate and its potential for water resources pollution, this study was undertaken to examine feasibility of biological and physico/chemical treating of high-strength landfill leachate that was collected from tehran municipal landfill. average cod of the leachate in aerobic submerged membrane bioreactor is 68...

Lens fiber cells are transparent, highly elongated, epithelial cells. Because of their unusual length these cells represent a novel model system to investigate aspects of epithelial cell polarity. In this study, we examined the fiber cell basal membrane complex (BMC). The BMC anchors fiber cells to the lens capsule and facilitates their migration across the capsule. Confocal microscopy revealed...

Duchenne muscular dystrophy is caused by the absence of the protein dystrophin. Dystrophin's function is not known, but its cellular location and associations with both the force-generating contractile core and membrane-spanning entities suggest a role in mechanically coupling force from its intracellular origins to the fiber membrane and beyond. We report here the presence of destructive contr...

This is the first examination of sensory receptive properties and associated electrophysiological properties in vivo of dorsal root ganglion (DRG) neurons that express the TTX-resistant sodium channel Na(v)1.9 (NaN). Intracellular recordings in lumbar DRGs in Wistar rats enabled units with dorsal root C-, Adelta-, or Aalpha/beta-fibers to be classified as nociceptive, low-threshold mechanorecep...

Achieving controlled extracellular microstimulation of the central nervous system requires understanding the membrane response of a neuron to an applied electric field. The "activating function" has been proposed as an intuitive predictor of membrane polarization during stimulation, but subsequent literature raised several limitations of this estimate. In this study, we show that, depending on ...