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58) Ventilation of lungs. Act of inhalation, act of exhalation.

Display of results on graphic display with a conclusion to the printer; Automatic calculation norms of the patient; formation of imprisonment before trail;

Data storage of 30 patients in volatile memory;

Opportunity of carrying out of inhalation tests;

Opportunity of application in stationary and out-patient conditions;

Devices of artificial ventilation of lungs SLE-2000 is intended for carrying out of operated artificial ventilation of lungs at newborns and children during carrying out reanimation actions in conditions of clinical hospitals, maternity hospitals, scientific research institutes of a children's structure.

59) Elastic draft of lungs.

Force of elasticity in lungs which forces them to be fallen down on an exhalation, refer to as elastic draft of lungs (EDL). It has two basic components

First, to fabrics of lungs have elastic properties (they depend not only on factor of elasticity of their components and from a degree of filling of lungs blood).

Second component of elastic draft of lungs is force of a superficial tension which arises on border between an alveolar gas mix and internal surface of the alveolus, the liquid covered by a layer.

60) Pulmonary resistance. Extensibility.Minute volume of breath.

Owing to work of respiratory muscles it is overcome so-called pulmonary resistance, resistance of aeriferous ways to fluctuations of a stream of air in them. It makes rather small size -0,2 Pa*sec ml-1. The size, return pulmonary resistance, refers to as an extensibility. Product of depth of breath (respiratory volume) on its frequency (counting upon 1 mines) defines minute volume of breath.

61) Bernoulli’s equation. Static and dynamics pressure.

The liquid incompressible and not having internal friction or viscosity is called ideal liquid.

ρ=∆m/∆V-density of a liquid.

It is equation Bernoulli. All members of the equation, have dimension of pressure and refer to: ρ=ρs - static; ρgh=ρh - hydrostatic; ρv2/2=ρd - dynamic. Then equation Bernoulli it is possible to formulate so: Full pressure equal to the sum of static, hydrostatic and dynamic pressure, remains in size of a constant in any cross-section section of a stream at stationary current of an ideal liquid. Bernoulli follows:Static pressure of a non viscous liquid at current on a horizontal pipe increases there where its speed decreases and on the contrary.

62) Viscosity of liquid. Laminar and turbulent fluid flow.

Rheology is a science about deformations and fluidity of substance. studying of biophysical features of blood as viscous liquid is rheology of blood. In a real liquid between molecules the forces of a mutual attraction, causing internal friction operate. Internal friction, for example, causes force of resistance at mixing of a liquid.

Viscosity depends by nature liquids and temperatures. Such liquids refer to Nuton's liquid. At some liquids viscosity depends from also on a mode of current of a liquid - pressure and a gradient of speed. Such liquids refer to non Nuton's liquid.

Distinguish laminar and turbulent current of a liquid. At laminar current a liquid it is divided into molecular layers which move with various speeds do not mix up. Such character of current of a liquid has at slow movement of a liquid on a pipe the layer of the molecules adjoining to a wall of a pipe, sticks to it and does not move. If speed of particles in a liquid randomly varies, particles pass from one layer in another such movement of a liquid refers to turbulent.

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