Three species of anuran amphibians (Odorrana tormota, Odorrana livida and Huia cavitympanum) have recently been found to detect ultrasounds. We employed immunohistochemistry and confocal microscopy to examine several morphometrics of the inner ear of these ultrasonically sensitive species. We compared morphological data collected from the ultrasound-detecting species with data from Rana pipiens...

Distinctive sediments containing mostly quartz, kaolinite, and both detrital authigenic hematite goethite blanket ~5000 km of the Atlantic coast Brazil from Rio de Janeiro all way to mouth Amazon River. The represent a significant period continental erosion followed by renewed weathering. Here we present (UTh)/He ages goethites hematites collected six weathering profiles in Espírito Santo, sout...

OBJECTIVES Cold plasma (CP) has been shown to be effective even against multiresistant microorganisms. As previous investigations on the effect of CP in root canals showed promising results, the aim of the present study was to analyze the bactericidal efficacy of CP in different depths of infected dentin. METHODS 32 standardized root canals of human mandibular premolars were infected with Ent...

New shock wave data on {100 t oriented single crystal periclase covering the pressure range from 160 to 200 GPa suggest that Mg0 is described by a single Hugoniot up to 200 GPa, with no displacive phase transitions of volume change greater than 1-1.5 per cent. For a third order finite strain fit, with K 0 constrained to its ultrasonically determined value of 162.7 GPa, the implied K 0' of 4.27 ...

The objective of this study was to compare the effectiveness of F-files and ultrasonics to remove the smear layer from instrumented root canals when irrigated with sodium hypochlorite and EDTA. Sixty healthy human premolar teeth were instrumented with ProTaper file series to F3, and the canals were enlarged with Profiles 35/.06, 40/.06, and 45/.06. The canals were then instrumented with either ...

BACKGROUND Gold standard treatment for symptomatic gall stones is laparoscopic cholecystectomy (LC). Ultrasonically activated devices have been used for gall bladder dissection in LC. Harmonic scalpel (HS) is the leading ultrasonically cutting coagulation device offering surgeons important benefits. The main aim of our study was to compare the surgical outcomes of LC performed by HS to that per...