Hygiene, option 2

Theme 1. Hygienic assessment of natural and artificial light
1. Case studies:
1.2. Rate the conditions of visual work in the filling according to the principles of pharmacy coverage, if it is known that the length of office of 6 m, width 4 m, lighting - general, presented in the form of two equidistant points of light, the light-carrying perpendicular wall. Light sources - fluorescent lamps dnev¬nogo light, each with 2 lamps of 40 watts. The office has a single window (2.7 mx 2.0 m). Give the hygienic conclusion and the description of the conditions of visual work, specify rekomenda¬tsii for their optimization.
2. Practical exercises:
2.1. Rate the conditions of visual work premises (their home). Give hygienic conclusion according to the principles of the lighting. Attach a layout plan of the premises in which the estimated uslo¬viya specify the size and orientation of buildings, factors reducing natural and artificial light, artificial light sources, their type, the power of rational allocation. List the objective and the organization estimates of coverage. Specify the method of their calculation, the instruments necessary for their determination. Make recommendations to optimize the conditions of visual work premises.
3. Test items:
3.1. The indicators characterizing the natural light:
3.2. Light coefficient (SC) is determined by:
3.4. The indicators characterizing the artificial lighting:

Theme 2. Hygienic evaluation of air-thermal regime
1. Case studies:
1.2. Rate of air-thermal regime in the pharmacy (control markirovoch¬naya). Placing of 5 x 4 x 3 m. There is one pane area of \u200b\u200b0.6 x 0.6 m, the mode of ventilation - 5 minutes per hour. The velocity of the air vents in the opening was 1.2 m / s. The room temperature the filling of 25 degrees Celsius, relative humidity - 50%. The room has 4 simultaneously pharmacist. Formulate re¬komendatsii to optimize the air-heat mode.
2. Practical exercises:
2.1.Dat hygienic assessment of the organization vozdush¬no-heat treatment in a residential area with the main principles of the organization of air. List the indicators that reflect the status of the air-heat treatment in a residential area. ....
3. Test items:
3.2. To ensure favorable conditions for thermoregulation at low temperature air in the room, you must create:
3.4. Feeling of discomfort in a person in a room with dopus¬timoy air temperature, but at a lower temperature of the walls and okru¬zhayuschih items is due to heat loss through:
3.6. Humidity is determined by the device:

Theme 3. Hygienic evaluation of environmental factors (drinking water, soil)
1.2. Rate the quality of the water wells. Alekseyevka, determine what class according to GOST concerns water source, specify req-list sary measures to improve the quality of water before feeding it to the population for drinking purposes.
The results of physical and chemical analysis: turbidity -10 mg / dm3, color - 40 degrees, the smell of - 4 points, taste - 3 points; total hardness of 5.40 mEq / l chloride 108 mg / L, sulphate 214 mg / liter, ammonia nitrogen - 0.8 mg / l of nitrite nitrogen - 0.9 mg / l of nitrate nitrogen - 3.9 mg / l, iron -15 mg / l, Manganese - 0.1 mg / l, hydrogen sulfide - 0 mg / L, fluoride - 0.1 mg / l, the number of coliform bacteria in 1 L - 2.
2.5. The content of humus in the soil nitrogen is '12 to '10 of absolutely dry soil, organic nitrogen - 50, respectively. Please rate the sanitary condition of the soil.
3. Test items:
3.2. Types of underground water sources:
3.4. The mechanisms of self-purification of water bodies include:
3.6. List the criteria by which the soil is recognized as extremely dangerous: