The salinity of the water is measured with a CTD instrument (Conductivity, Temperature, Depth). The conductivity is used to calculate the salinity in conjunction with the temperature and depth (pressure) measurements.Seawater has an average density of 1.027 gm/cm 3, but this varies with temperature and salinity over a range of about 1.020 to 1.029.he salinity of the water is measured with a CTD instrument (Conductivity, Temperature, Depth). The conductivity is used to calculate the salinity in conjunction with the temperature and depth (pressure) measurements.
The Multifocal Electroretinogram. What is the Electroretinogram (ERG)? The electroretinogram (ERG) is a recording of the bioelectric potential, the summed activity of the retinal cells located at the back of the eye, when stimulated by light. When bioelectrical changes occur within the retina, the change is propagated to the surface of the cornea.
An echocardiogram is a procedure that uses high frequency ultrasound waves to evaluate your heart.Typically it will assess: Ã¢â¬Â¢ the size of your heart: the size of the pumping chambers, as well as the thickness of the heart muscle Ã¢â¬Â¢ pumping strength: how well is your heart pumping blood Ã¢â¬Â¢ valve problems: an echocardiogram can determine whether your valves leak or if they do not open properly Ã¢â¬Â¢ problems inside the chamber of the heart: this test can help determine if you ...