Auditory Threshold of Black Rockfish.

Effect of Umbilical Cord Ferritin Level on Auditory Brainstem Response Threshold in Newborns

Introduction: Iron plays an important role in myelination. Ferritin is a reliable indicator of the tissue iron store and umbilical cord ferritin level reflects the in utero iron stores. Objective is to study the effect of the umbilical cord ferritin level on the ABR recording in the newborn.   Materials and Methods: The study was conducted in a ...

Temporary Auditory - Threshold Shifts Induced

Four divers were exposed successively for ten minute periods to pure tones of 5600, 1400, and 700 hertz (Hz) (in that order) in air at 100 decibels above 20 raicropascal and in water at various sound pressure levels between 125 and 150 decibels above 20 micropascal. Divers incurred moderate temporary auditory-threshold shifts (TTS) from all exposures. Equivalent amounts of TTS are produced in w...

Recovery potential of black rockfish, Sebastes melanops Girard, recompressed following barotrauma.

Overfished species of rockfish, Sebastes spp., from the Northeast Pacific experience high bycatch mortality because of 'barotrauma', a condition induced from the rapid change in pressure during capture. Field experiments show that it may be possible for rockfish to recover from barotrauma if quickly recompressed; however, no work has followed the physiological recovery of rockfish after recompr...

Black-and-White Threshold Graphs

Let k be a natural number. We introduce k-threshold graphs. We show that there exists anO(n) algorithm for the recognition of k-threshold graphs for each natural number k. k-Threshold graphs are characterized by a finite collection of forbidden induced subgraphs. For the case k = 2 we characterize the partitioned 2threshold graphs by forbidden induced subgraphs. We introduce restricted, and spe...

The Reliability of Repeated Auditory Threshold Determination.