1.   This is the vapour pressure curve of water.

2.   Curve AT is the vapour pressure curve for ice.

3.   First of all note that the vapour pressure curve terminates at point C.

4.   This is called the critical point of water.

5.   The dotted curve AD, for example, is the vapour pressure curve of a-sulphur above its transition temperature.

6.   At all vapour pressures and compositions above the line, the mixture is a liquid.

7.   Compared with the proximal oesophagus, the median duration of oesophageal contractions and the median area under the pressure curve were also higher in the distal oesophagus.

8.   As cisapride increased both contraction amplitude and duration, the significant increase found in the area under the pressure curve could be expected.

9.   Motility was quentified by integrating area under the pressure tracings curve in four manometer channels.

10.   Pressure curves were analysed manually.