Measurement of air temperature

Two thermometers should be placed on a stand. The first should be placed 1, 5 m above the floor and the second – 0, 20 m above the floor. It is necessary to measure the temperature of the air in three main points, notably at the external wall, in the centre of the room and at the internal wall. According to the difference of the temperatures in different points, the horizontal temperature gradient should be calculated. According to the difference of the readings of the “upper” and “lower” thermometers, the vertical temperature gradient should be calculated.

ТHЕМE 1.4

HYGIENIC EVALUATION OF THE QUALITY OF DRINKING WATER AND WATER SUPPLY

The motivational statement of the theme

Water is one of the most important elements of the environment. Water is of great physiological significance as it is the main structural component of the human body.

Nearly 60 – 70% of the body of an adult is water. Pure water is used for washing, cleaning and cooking foods. Water is an important factor contributing to the formation of climate; it is rather essential for agriculture.

Hydrotherapeutic procedures and hardening increase the resistance of the human body to the effects of many unfavourable factors. Watching a smooth water surface or listening to rain has a favourable psychotherapeutic effect on the human soul.

The requirements imposed on the quality of water used for drinking, cooking and physical exercise are its sound quality and safety. Thus, the doctor of any specialty should be able to make hygienic conclusion of the quality of water according to the results of laboratory analyses

The objective: to get knowledge about influence of quality water on persons health; hygienic principles of set norms of water quality; learning how to make hygienic evaluation of the quality of water according to the results of laboratory analyses

Students’ classroom activities

1.Situational problems of two types. The solution of the situational problems should be reported in writing

2. Presentation and discussion of individual students’ reports.

Self-study task

1. Physiological, hygienic, еepidemiological significance of water.

2. Diseases associated with salinity or microelement content of water.

3. Comparative estimation of the sources of water supply. Sources of surface and ground water contamination.

4. Hygienic requirements imposed on the quality of drinking water

Plan of students’ independent activities

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1. Situational problem (type 1)№ ________

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2. Situational problem (type 2)№ ________

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