the use of gis to enhance communications of cultural and natural resources and contamination
Humic Matter in Soil and the Environment: Principles and Controversies - Chapter 2 pot
Ngày tải lên :
11/08/2014, 12:21
... during the years, has set the stage for the development of the concepts and types of humic substances followed today It triggered in the beginning a flurry of investigations and the ligno-protein theory ... of the huge deposits of peat, lignite or leonardite, coal and oilshale adds to the dimension of its wide occurrence in the world Geochemists are even of the opinion that the greatest storehouses ... incomplete, and hence contributes to accumulation of huge amounts of organic matter Many of the wetlands and some of the lake areas are eutrophic, encouraging an excessive growth of aquatic weeds and other...
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Handbook of industrial and hazardous wastes treatment - Part 1 pot
Ngày tải lên :
11/08/2014, 17:22
... organisms and their environment Ecology implies more the webs of natural forces and organisms, their competition and cooperation, and how they live off one another [2 – 4] The recent introduction of the ... [25,26,32,39] The test is based on the inhibition of the synthesis of TM b-galactosidase in E coli after exposure to pollutants The method has been used to measure acute toxicity of sediment and soil and ... the community of organisms in question and how feasible is the culture of the species in the laboratory throughout the year As protozoa and nematodes live in pore water in the soil, most of the...
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Handbook of industrial and hazardous wastes treatment - Part 2 pot
Ngày tải lên :
11/08/2014, 17:22
... Autocatalytic plating is the process in which the metal ion in the solution is forced to convert into the metallic state and deposit onto the object to be plated by the use of reducing agents The ... and Grinding Machining and grinding are the mechanical operations to shape and condition metals and their surfaces These operations involve the use of natural and synthetic oils for cooling and ... Determination of the operating pH requires a very careful examination of the theoretical basis of the process as the number of metals in the wastewater increases The determination of the discharge standards,...
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Handbook of industrial and hazardous wastes treatment - Part 3 pdf
Ngày tải lên :
11/08/2014, 17:22
... upon the environmental conditions of the reactor and facilitates the maintenance of high concentrations (20 –30 g/L) of VSS in the reactor The flow of influent starts at the bottom of the reactor, ... passes through the blanket of dense granules in the bottom half portion of the reactor and reaches into the gas –liquid – solid separator located in the top portion of the reactor The gas – liquid ... content of solids However, the quality of granules and hence the performance of the reactor is highly dependent upon the toxicity and other characteristics of wastewater A modified version of the...
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Handbook of industrial and hazardous wastes treatment - Part 4 ppt
Ngày tải lên :
11/08/2014, 17:22
... between 2.5 and 40 m3/ton or tonne for cattle and 1.5– 10 m3/ton or tonne for hogs The rate of water use and wastewater generation varies with both the time of day and the day of the week To comply ... Another disadvantage of the ponding system is the accumulation of solid sludge at the bottom of the ponds (Fig 6) Eventually the sludge and scum will clump together inside the pond, lowering the ... widely, but Imhoff tanks with retentions of –3 hours have been used in the past in the United States and are reported to remove about 65% of the suspended solids and 35% of BOD [18] The use of a deep...
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Handbook of industrial and hazardous wastes treatment - Part 7 (end) potx
Ngày tải lên :
11/08/2014, 17:22
... between the rim and the tire The tire treads are the part of the tire that meets the road surface; their design and composition depend on the use of the tire Tire cords are woven synthetic fabrics ... condensate and hot and cold water are used in the molding and curing areas The majority of the water is recycled back to the boiler or hot water tank for use in the next recycle Soapstone areas and ... extends the range of applications and the service life of the wood By design, the chemicals used to protect wood must be toxic to the target organisms, but they may also affect nontarget organisms and...
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An experimental study on the thermal valorization of municipal and animal wastes
Ngày tải lên :
05/09/2013, 15:28
... attributed to the calcium carbonate of the sample, the content of which was about 45% in ash Therefore, the DTG peaks of the two samples differ in position and height Taking into consideration that the ... conditions and at developing kinetic models for the pyrolysis and combustion of these fuels, for which there is lack of information in the literature The obtained data should be useful for the design of ... pre-exponential factor of component j, Ej is the activation energy of component j, g expresses the effect of ambient gas composition and f describes the change of surface reactivity as a function of the fractional...
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ADVANCED GAS CHROMATOGRAPHY – PROGRESS IN AGRICULTURAL, BIOMEDICAL AND INDUSTRIAL pdf
Ngày tải lên :
28/06/2014, 14:20
... MS, the nominal mass is often used, which enable to count the numbers of each constituent elements However, if the sum of the masses of the atoms in a molecule using the most abundant isotope ... (Chernushevich, 2001), ion trap (IT-TOF-MS), and even another TOF (such as TOF/TOF-MS) have all been developed and found more applications than TOF-MS alone (Vestal & Campbell, 2005) Tandem mass spectrometer ... field of known strength to have the same kinetic energy (given they have the same charge) Therefore, the square of the velocity of an ion is reversely proportional to its m/z, Ek = (1/2)mv2 and the...
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ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - MUNICIPAL WASTEWATER potx
Ngày tải lên :
10/08/2014, 20:20
... are in the range of to inches Packing of this size permits air to be drawn into the bed and the bed is not clogged by biological slime There appears to be a trend toward more use of plastic filter ... rate of application lower than that of the primary tank is necessary here because of the different character of the material to be removed Rates in this portion of the system are in the range of ... circulation of air into the filter The underdrains discharge to a main collection channel which, in turn, discharges to the final settling (humus) tank The importance of the function of the final...
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Accumulation and transpotation of selected heavy metals in thermophilic anaerobic co-digestion of municipal sewage sludge and organic waste.PDF
Ngày tải lên :
24/06/2015, 08:16
... though valve in the bottom of reactor and pH, EC were measured Others parameters such as COD, heavy metals were measured after days to days follow experiment plan in order to assess the stabilization ... variation of EC value is suitable rule of Therefore, e 100000 the accumulation of heavy P metals in municipal sewage sludge is different [ ,*oo a on each of zones as well as each of country 80000 The ... like that: The accumulation and transportation of selected heavy metals in thermophilic anearobic co-digestion of municipal sewage sludge and organic waste depends on a lot of factors such as...
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Research on UNITANK technology and its application in municipal wastewater treatment plant
Ngày tải lên :
07/07/2015, 10:30
... B, C The tanks share the public wall and have hydraulic connection with each other through the public channel at the bottom Outlets of the connected channel were installed at the center of the ... Aeration stops and sedimentation begins in tank A The sewage flows into tank B and out of tank C In the main stage 2, the sewage flows into tank C, then flows into tank B Effluent flows out of tank ... System The concentration of residual sludge for suction is low because the bottom of the tanks is flat and the single point method is chosen as the operation mode of sludge pump Usually there...
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A new hybrid treatment system of bioreactors and electrocoagulation for superior removal of organic and nutrient pollutants from municipal wastewater
Ngày tải lên :
13/09/2015, 17:48
... reactor was controlled using level sensors The wastewater was allowed to flow naturally from the EQ through the RHMBR to the MBR via gravity flow to save capital costs Both the equalizing reactor and ... agitator at the center of the reactor (Fig 1) The packing ratio of the fibrous was 60 ± 5% based on the volume of the reactor for the attached growth biomass The picture of polypropylene fiber media ... pressure (TMP), in the range of À0.05 to 0.0 MPa, and the phenomenon of bio-fouling in the MBR were monitored for changes in TMP via the vacuum gauge The primary-function of MBR is to maintain a high...
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Contact-Adsorption-Regeneration-Stabilization Process for the Treatment of Municipal Wastewater
Ngày tải lên :
05/09/2013, 09:38
... Three lab-scale reactors were used to evaluate the CARS process The schematic diagram is shown in Fig The effective volumes of the adsorption tank, the regeneration tank and the secondary clarifier ... for the three reactors, while the HRT of the adsorption tank were kept at 30 In Series II, R was increased from 20% to 60%, and the SRT, HRT of regeneration tank, and HRT of the adsorption tank ... Fig - Variations of COD, NH4+-N, and PO43 P removals vs time at different HRTs of the adsorption tank The effect of HRT of the adsorption tank to the CARS process is shown in Fig The COD removal...
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Continuous Anaerobic Digestion of Food Waste and Paper Waste under Mesophilic-Dry Condition
Ngày tải lên :
05/09/2013, 10:15
... The proper volume of recirculated sludge can vary according to the type of reactor, characteristics of the substrate and pumps used, and system performance, but it is obvious that this kind of ... sludge inside the reactor The same screw-type pumps were used for feeding the substrate and recycling the sludge inside the reactor Further details are provided in Table In order to optimize this ... Accumulation of acids decreased the pH, resulting in the failure of the whole system The growth rate of the acidogenic bacteria is much higher than that of methanogenic archea, and the bacteria...
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Catalytic degradation of municipal waste plastics to produce fuel using betonite
Ngày tải lên :
27/11/2013, 21:37
... with the help of a thermocouple which is connected to a PID controller and contactor as explained in the previous section As the temperature within the reactor rises the feed present in the reactor ... attained The generated vapors are removed from top of the reactor through opening provided on the head of the reactor The vapors then pass through a series of GI pipes interconnected to form two ... contamination, as well as economical resistance due to the increase of space and disposal costs In a long term neither the land filling nor the incineration solve the problem of wastes, because...
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International Review of Industrial and Organizational Psychology 2004 Volume 19 pot
Ngày tải lên :
06/03/2014, 05:20
... Society of Medicine, and the Royal Society of Health Professor Cooper is the President of the British Academy of Management, is a Companion of the (British) Institute of Management, and one of the ... validity of the measurement of the independent variable(s) In particular, the use of experts external to the organization is to be encouraged, because they are more likely to know about the full ... Aston, Heriot-Watt, Wolverhampton and Middlesex universities He was awarded the CBE, Commander of the Order of the British Empire, by the Queen in 2001 Ivan T Robertson is Professor of Work and...
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International Review of Industrial and Organizational Psychology 2003 Volume 18 ppt
Ngày tải lên :
06/03/2014, 05:20
... Society of Arts, Royal Society of Medicine and Royal Society of Health He is also founding editor of the Journal of Organizational Behavior and co-editor of Stress and Health, serves on the editorial ... Zealand, Austria, Canada, the USA, and the UK The presence of contributions from such a diverse range of countries indicates the international nature of our discipline One of the purposes of the ... account of the possible impact of cultural attitudes toward the family on both public policy and the behavior of firms Another possible explanation for the finding that high levels of statutory provision...
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Publicly Funded Agricultural Research and the Changing Structure of U.S. Agriculture doc
Ngày tải lên :
06/03/2014, 15:20
... scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare Upon the authority of the charter granted to it by the Congress ... Academy of Sciences to secure the services of eminent members of appropriate professions in the examination of policy matters pertaining to the health of the public The Institute acts under the responsibility ... involving both the characteristics of farms (the system of agricultural production) and the relationships of farms to other sectors and institutions “Structural change” refers to the change in...
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