OBJECTIVES/HYPOTHESIS Examine a protective crumple zone effect of paranasal sinuses and nasal cavity on skull base fractures. STUDY DESIGN Randomized-control, cadaveric study. METHODS In the experimental group (n = 4), the nasal cavity and bilateral sinuses of cadavers were obliterated with bone cement, whereas the control group (n = 4) had native sinus architecture. Increasing frontal, gla...

This paper discusses the numerical simulations of selected high-speed aeropropulsive applications including axisymmetric supersonic base flowfields, with and without jets, and three-dimensional supersonic hot jets. Comparisons are made using a compressibility corrected k-ε turbulence model and an Explicit Algebraic Stress Model (EASM). The present EASM, referred to as EASM/J, has been modified ...

OBJECTIVES To validate the results of the home penile tumescence monitor versus the sleep laboratory studies of erectile function. METHODS We used both methods to study 18 episodes of rigidity and 19 episodes of tumescence in 10 subjects with erectile dysfunction before and after the use of an experimental vasodilating medication. RESULTS The tumescence measurement in the sleep laboratory c...

[1] The gradient in the partial pressure of carbon dioxide (pCO2) across the air-sea boundary layer is the main driving force for the air-sea CO2 flux. Global data bases for surface seawater pCO2 are actually based on pCO2 measurements from several meters below the sea surface, assuming a homogeneous distribution between the diffusive boundary layer and the upper top meters of the ocean. Compil...

AIMS To review systematically the interrater reliability of pressure ulcer classification systems to find out which classification should be used in daily practice. BACKGROUND Pressure ulcer classification systems are important tools in research and practice. They aim at providing accurate and precise communication, documentation and treatment decisions. Pressure ulcer classifications are cri...

Base-line intraocular pressure was similar in the rabbit eye ivith a transected optic nerve and the opposite eye subjected to a sham operation. Hyperosmotic oral ethanol, at doses of 1.5 to 2.0 ml. per kilogram, lowered intraoctdar pressure significantly less in eyes with transected optic nerves than in their fellow eyes with intact optic nerves. Smaller doses of ethanol (0.75 ml. per kilogram)...

Acutely ill and immobilized neonates and children are at risk for pressure ulcers, but a paucity of evidence-based research exists on which to base guidelines for clinical practice. Most prevention and treatment protocols for pressure ulcers in the pediatric population are extrapolated from adult practice. Clinical practice guidelines for prevention and treatment of pressure ulcers that specifi...