ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - MICROBIOLOGY ppt

... The combination of light intensity, wavelength of available light, wavelength of operation of principal energy trans- ducing pigment, degree of aerobiasis, and availability of oxidizable compound ... some of the properties of each type. Viruses, on the other hand, are not cells at all. Instead of arguing endlessly about whether a micro- organisms is more plant-like or...

Ngày tải lên: 10/08/2014, 20:20

... Metals Because of their antibacterial and antifungal activity, com- pounds of mercury, silver, copper and tin are of importance from both medical and industrial points of view (Hugo and Russell, ... mea- surement of post-incubation opacity corresponding to stan- dard survivor levels (Needham, 1947), and also measurement of cell volume increase following post-exposure...

Ngày tải lên: 10/08/2014, 20:20

... frequen- cies of the preferred octave bands in the audible range are 31.5, 63, 125, 250 and 500 Hz and 1, 2, 4, 8 and 16 kHz. The center frequencies of the preferred one-third-octave bands are ... with frequencies outside of that range. A-, B- and C-weighting schemes were developed to compensate for the frequency-dependence of human hearing at low, moder- ate and high sou...

Ngày tải lên: 10/08/2014, 20:20

... 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

... deaths, and specific inci- dence of diseases; social, economic, and envi- ronmental relationships; also water-, insect-, and food-borne diseases; animal- and animal- related diseases, airborne and ... densifi ca- tion, composting, separation, treatment, and energy con- version. Disposal shows the environmental inter-relation of air, land, and water, and the place of s...

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... knowledge of manufacturing process chemistry and engineering to the sciences of geol- ogy and hydrogeology and have refined the necessary equip- ment and techniques for waste treatment and remediation. ... pro- visions dealing with underground tanks, the restriction of land disposal of a variety of wastes, corrective action require- ments for all releases, and the in...

Ngày tải lên: 10/08/2014, 20:20

... Chloroform 6 7-6 6-3 6.0 D007 Chromium 744 0-4 7-3 5.0 D023 o-Cresol 9 5-4 8-7 200.0* D024 m-Cresol 10 8-3 9-4 200.0* D025 p-Cresol 10 6-4 4-5 200.0* D026 Cresol — 200.0* D016 2,4-D 9 4-7 5-7 10.0 D027 1,4-Dichlorobenzene ... 10 6-4 6-7 7.5 D028 1,2-Dichloroethane 10 7-0 6-2 0.5 D029 1,1-Dichloroethylene 7 5-3 5-4 0.7 D030 2,4-Dinitrotoluene 12 1-1 4-2...

Ngày tải lên: 10/08/2014, 20:20

... wavelength range of the instrument, that is x-ray, uv, visible, and ir and type of instrument, i.e. absorp- tion, emission, photoluminescence (fluorescence and phos- phorescence), and turbidity. ... elec- tronic components and environmental sources and cannot, at times, be completely eliminated. • The ratio of the amplitude of the signal to that of the noise is ca...

Ngày tải lên: 10/08/2014, 20:20

... handling the peak to average power of the radiation and the response of the instrument should be fl at over a broad band of frequencies. In terms of desirable broad band characteristics of ... medium per unit mass of the medium, and is expressed in W/kg. Energy absorption is a continuous and differentiable function of space and time and one may speak of its grad...

Ngày tải lên: 10/08/2014, 20:20

... components of Yusho oils were primarily tetra- and pentaCBs with lesser quantities of tri-, hexa- and hepta- CBs and small quantities of octa- and nonCBs. In contrast to the predominance of tetra- and ... toxic effects of European PCBs and the con- centration levels of PCDFs. The major PCDF components contained in Yusho oil were the highly toxic 2,3,7,8-tetra- CDF...

Ngày tải lên: 10/08/2014, 20:20