Resonance and damping

Feb 7, 2017 by in ANESTHESIA Comments Off on Resonance and damping

Damping results in oscillations of reducing amplitude due to the loss of energy to the surroundings. It is measured as the damping coefficient, which refers to the amount of damping…

read more

Physics of gases

Feb 7, 2017 by in ANESTHESIA Comments Off on Physics of gases

where P is absolute pressure (Pa), V is volume (m3), n is amount of substance (mol), R is the universal gas constant (8.314 J·K−1·mol−1), and T is temperature (K). Boyle’s…

read more

Diathermy

Feb 7, 2017 by in ANESTHESIA Comments Off on Diathermy

With unipolar diathermy, electric current flows through the patient and out via a large conductive pad placed on a nearby limb. The large surface area ensures that current density remains…

read more

Medical gases: storage and supply

Feb 7, 2017 by in ANESTHESIA Comments Off on Medical gases: storage and supply

Applied science How do you determine how much gas remains in a cylinder? For cylinders containing compressed (non-liquefied) gas, gauge pressure falls as gas is used; Boyle’s law can be…

read more

Fluid dynamics: Bernoulli and Venturi

Feb 7, 2017 by in ANESTHESIA Comments Off on Fluid dynamics: Bernoulli and Venturi

By altering the driving flow, the constriction size or the size of the opening, the Venturi effect can be used to mix gases or fluids to produce a fixed concentration….

read more

Diffusion and osmosis

Feb 7, 2017 by in ANESTHESIA Comments Off on Diffusion and osmosis

The osmometer uses supercooling to measure the depression of the freezing point. Supercooling is the process of cooling a liquid without causing a change in state. It involves rapidly cooling…

read more

Humidity

Feb 7, 2017 by in ANESTHESIA Comments Off on Humidity

html xmlns=”http://www.w3.org/1999/xhtml” xmlns:mml=”http://www.w3.org/1998/Math/MathML” xmlns:epub=”http://www.idpf.org/2007/ops”> Chapter 8 Humidity Basic science Absolute humidity is the mass of water vapour in a given volume of gas at a specified temperature and pressure. It…

read more

Latent heat

Feb 7, 2017 by in ANESTHESIA Comments Off on Latent heat

html xmlns=”http://www.w3.org/1999/xhtml” xmlns:mml=”http://www.w3.org/1998/Math/MathML” xmlns:epub=”http://www.idpf.org/2007/ops”> Chapter 7 Latent heat Basic science Heat capacity is the amount of heat energy required to raise a given object by one kelvin, and has the…

read more

Vapours

Feb 7, 2017 by in ANESTHESIA Comments Off on Vapours

As a liquid’s temperature rises, more molecules gain sufficient energy to leave the liquid and enter the vapour phase. This results in an increase in SVP. SVP continues to rise…

read more
Get Clinical Tree app for offline access