STUDY OBJECTIVES Methods used to express the severity of oxygen desaturation during polysomnography include the average oxygen saturation (AO2), lowest oxygen saturation (LO2), and the percent of the total time with oxygen saturation level lower than 90% (T<90%). We wanted to determine which one of these methods is least variable during different hours of monitoring. DESIGN Prospective, obser...

The primary focus of this study is to assess the toxicity chemical corexit 9527 28 day old fresh water tilapia guineensis fingerlings. fingerlings was studied in static renewal bioassay glass tank, using tap water. collected from Ikpoba HillRiver, Edo State used access lethal concentrations dispersant 9527. Differential sensitivity test organisms observed.This achieved by predictive application...

The changes in behavior that occur on a 24-hour basis to match the 24-hour changes in the physical environment due to the rotation of the earth on its axis are a hallmark of life on the planet Earth. The nervous system of both lower and higher organisms has evolved over millions of years to meet the demands of the dramatic changes in the physical environment that occur in relation to the change...

background bacterium-bacterium antagonistic interactions could be important in the ecology of marine bacteria. antimicrobial properties of microorganisms are exploited in various fields of human activities. objectives antagonism of heterotrophic bacteria from different marine environments of tropical and temperate zones was examined. materials and methods bacteria were isolated from biofilm sam...