ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - GEOGRAPHIC INFORMATION SYSTEMS doc

... usage of Geographic Information Systems, there is a corresponding need for standardization. Standardization does not mean that all GIS databases con- tain the same format and quality of information; ... to Urban Geographic Information Systems, Oxford University Press, New York, pp. 3–24. National Institute of Standards and Technology (NIST), 1992, Federal Informatio...

Ngày tải lên: 10/08/2014, 20:20

... can lead to balancing problems and cross- contamination between laboratory spaces. Positive introduc- tion of air from corridors and of ce spaces by use of trans- fer fans can improve this. It ... Van Nostrand-Reinhold, New York. 10. Slote, Lawrence, Editor, Handbook of Occupational Safety and Health, 1987, Wiley-Interscience, New York. 11. Pipitone, David A., Safe Storage...

Ngày tải lên: 10/08/2014, 20:20

... as a function of duct area or diameter. Representative requirements are shown in Table 4. S-6 S-5 S-4 E-4E-5E-6 E-3 E-2 E-1 EAST S-3 S-2 S-1 SOUTH R 3 R 2 R 1 FIGURE 4 Velocity and sampling ... Collection efficiency of any given piece of equipment is a function of particle size, being low for small particles and high for large ones, and capital and operating costs of eq...

Ngày tải lên: 10/08/2014, 20:20

... (schematic) as function of time of day, over city and country. 50 40 30 20 0 5 10 15 20 Time of day 100-T, (%) FIGURE 7 Concentrations of air pollution (100-T%), as function of time of day, on clear ... The first term on the right-hand side represents the rate of formation of particles of volume v due to coagulation, and the second term that rate of loss of partic...

Ngày tải lên: 01/04/2014, 11:44

... R.A. (1872), Air and Rain: The Beginnings of a Chemical Climatol- ogy. Longmans, Green, and Co., London, England. Stensland, G.J. and R.G. Semonin (1982), Another interpretation of the pH trend ... acidification and that the acid rain is pri- marily the result of long-range transport of pollutants from the heavily industrialized areas of northern Europe. The rain and...

Ngày tải lên: 10/08/2014, 20:20

... The first term on the right-hand side represents the rate of formation of particles of volume v due to coagulation, and the second term that rate of loss of particles of volume v by coagulation ... light-scattering properties of an individual particle are a function of its size, shape and refractive index. The intensity of scattered light is a function of the scat...

Ngày tải lên: 10/08/2014, 20:20

... competition. (HbCO) (HbO) 210 PC O PO 22  (HbCO) and (HbO 2 ) are the concentrations of carboxyhemo- globin and oxyhemoglobin, and PCO and PO 2 are the partial pressures of carbon monoxide and oxygen. Inspiration of air containing ... presence of different con- centrations of ambient carbon monoxide and the effect of various levels of activity on the rate of u...

Ngày tải lên: 10/08/2014, 20:20

... of time of day, over city and country. 50 40 30 20 05101520 Time of day 100-T, (%) FIGURE 7 Concentrations of air pollution (100-T%), as function of time of day, on clear day (solid line) and ... (m) A - EXTREMELY UNSTABLE B - MODERATELY UNSTABLE C - SLIGHTLY UNSTABLE D - NEUTRAL E - SLIGHTLY STABLE F - MODERATELY STABLE A B C D E F A - EXTREMELY...

Ngày tải lên: 10/08/2014, 20:20

... methods for control of selenium and its compounds. However, based on the properties and on the methods of recovery and purification of selenium wet scrubbers and high- voltage electrostatic ... From manufacture of lead additives for gasoline: Use of water scrubbers and bag house filters. 5) From transfers and transpor- tation of lead gasoline: Use of vapor r...

Ngày tải lên: 10/08/2014, 20:20

... to apply his law of the minimum as rigidly as some have interpreted it, and we can best envision nutrient limitation from the standpoint of the balance and interac- tions of the whole nutrient ... north end of the lake and the southern end of the lake showed differ- ent periods of high productivity. This variability in productivity may be influenced by sewage discharge...

Ngày tải lên: 10/08/2014, 20:20