geomicrobiology of selenium and tellurium
geomicrobiology
Ngày tải lên :
08/04/2014, 02:21
... cycling of organic and some forms of inorganic matter at the surface and in the subsurface of Earth, the weathering of rocks, soil and sediment formation and transformation, and the genesis and degradation ... Chapter 21 Geomicrobiology of Selenium and Tellurium 527 21.1 21.2 21.3 21.4 21.5 Occurrence in Earth’s Crust 527 t Biological Importance 527 Toxicity of Selenium and Tellurium ... vegetative cells and spores, it is generally not capable of sustaining growth and multiplication of the organisms because of lack of sufficient moisture and nutrients and because of lethal radiation,...
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study the substitution of fossil fuels by rdf produced from municipal solid waste of hanoi m.a thesis waste management and contaminated site treatment
Ngày tải lên :
09/01/2015, 08:53
... population and quickly growing o f living standard as well as consumerism give Vietnam more and more challenges One o f them is the growth o f energy demand in all sectors Prices of electricity and ... in western and eastern countries is different The distinction in paper and cardboard can be a good example In Italy and UK, the percentage of paper and cardboard is respectively times and 10 times ... market and in demanding the proper design o f combustion systems In terms o f densified or pelletized RDF (Figure 8), it has advantages over fluff type It is transportable and easier to handle and...
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Effect of unsaturated fatty acid esters of biodiesel fuels on combustion, performance and emission characteristics of a DI diesel engine
Ngày tải lên :
05/09/2013, 15:28
... generation) The presence of hydroperoxides increases the risk of polymerization and acidification and of the appearance of insoluble sediments and gums, which can lead to filter plugging and deposits in ... Where, JT 80:20 = Blend of 80 % of jatropha oil methyl ester and 20 % of tallow oil methyl ester by volume, JP 50:50 = Blend of 50 % of jatropha oil methyl ester and 50 % of palm oil methyl ester ... volume, JT 50:50 = Blend of 50 % of jatropha oil methyl ester and 50 % of tallow oil methyl ester by volume, SFCt 50:50 = Blend of 50 % of sunflower oil methyl ester and 50 % of coconut oil methyl...
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Tài liệu LIQUID FOSSIL FUELS FROM PETROLEUM ppt
Ngày tải lên :
23/01/2014, 07:20
... mining, processing, and refining of oils from tar sands Table 47.18 lists chemical and physical properties of several tar sand bitumens.15 Further refining will be necessary because of the high density, ... K P Thomas et al., "Chemical and Physical Properties of Tar Sand Bitumens and Thermally Recovered Oils," in Synthetic Fuels from Oil Shale and Tar Sands, Institute of Gas Technology, Chicago, ... 14 H Tokairin and S Morita, "Properties and Characterizations of Fischer-Assay-Retorted Oils from Major World Deposits," in Synthetic Fuels from Oil Shale and Tar Sands, Institute of Gas Technology,...
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Tài liệu FOSSIL FUELS: ENVIRONMENTAL EFFECTS doc
Ngày tải lên :
18/02/2014, 04:20
... monoxide; (b) the oxides of sulfur, SO2 and SO3 (represented as SOx); (c) the oxides of nitrogen, NO and NO2 (NOx); and (d) ‘particulates’, consisting primarily of very fine soot and ash particles Air ... “America Then and Now,” Time of FOSSIL FUELS: ENVIRONMENTAL EFFECTS 193 1/29/96, p 38; see also Review Question 11-4) Use of cold engines – the result of frequent short trips – and of improperly ... tons of S and N to tons of SO2 and NO, multiply by 64/32 and 30/14 [Source: Vital Signs 1996, Worldwatch Institute; Energy Information Administration.] Illustration 11-1 The annual consumption of...
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Use of Alternative Fuels in Cement Manufacture: Analysis of Fuel Characteristics and Feasibility for Use in the Chinese Cement Sector pdf
Ngày tải lên :
24/03/2014, 05:20
... landfills as of 2003, and shredded tires as of 2006 (Corti and Lombardi 2004) The German Federal Environmental Office commissioned a study in 1999 to evaluate the trade-offs among different landfill ... value and water content Based on the average values reported in Table II-7, and an assumed coal LHV of 26.3 GJ/ton, the range is between 1.3 and 1.8 tons of chemical and hazardous waste per ton of ... non-recoverable components of end -of- life vehicles It is typically about 20% by weight of the vehicle and is an amalgam of rubber, plastic, wood, paper, dirt, fabric, and ferrous and non-ferrous metal...
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Estimating the burden of disease attributable to indoor air pollution from household use of solid fuels in South Africa in 2000 pdf
Ngày tải lên :
29/03/2014, 18:20
... levels of recurring respiratory symptoms among children and high levels of indoor air pollution (with levels of CO, SO2 and NO2 up to 12 times those of international guidelines).24 One of the ... use of solid fuels Three health outcomes had strong evidence of a causal relationship: ALRIs in children under years, and COPD and lung cancer (from the use of coal) in adults of 30 years and ... valuable contribution of Associate Professor Theo Vos of the University of Queensland, School of Population Health We thank him not only for providing technical expertise and assistance, but also...
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Báo cáo y học: " Theoretical size distribution of fossil taxa: analysis of a null model" ppsx
Ngày tải lên :
13/08/2014, 16:21
... of species, Lt, and the number of species in the pioneering genus, Nt, have negative binomial distributions (with parameters n0 and e-(λ+ γ)t and n0 and e-λt respectively); while the number of ... One characteristic of interest in the empirical study of lineages is the proportion of monotypic taxa Przeworski and Wall[5] compared the proportions of monospecific genera and of monogeneric families ... Biology and Medical Modelling 2007, 4:12 No of genera 10 No of genera 50 10 50 No of genera Figure plots (both cataclysmic extinctions scales logarithmic) of the distribution of the number of genera...
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ASTM D976 06 Standard Test Method for Calculated Cetane Index of Distillate Fuels
Ngày tải lên :
20/10/2014, 17:17
... the validity of any patent rights asserted in connection with any item mentioned in this standard Users of this standard are expressly advised that determination of the validity of any such patent ... “35.55” and “35.65” to “35.6 cetane index.” Precision and Bias 7.1 Correlation of index values with ASTM cetane number is dependent to a great extent upon the accuracy of determination of both ... Method D86 data following Appendix X5, Correlation of Jet and Diesel Fuel of test Method D2887 and use the data from Test Method D86 in place of the actual Test Method D86 data in the calculations...
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ASTM D4539 10 Standard Test Method for Filterability of Diesel Fuels by LowTemperature Flow Test (LTFT)
Ngày tải lên :
20/10/2014, 17:18
... (Warning—Avoid buildup of vapors, and eliminate all sources of ignition, especially non-explosion proof electrical apparatus and heaters.) A1.1.7 (Warning—Avoid prolonged breathing of vapor or spray ... the validity of any patent rights asserted in connection with any item mentioned in this standard Users of this standard are expressly advised that determination of the validity of any such patent ... Timer, capable of measuring tenths of a second 5.7 Vacuum System, capable of maintaining a constant vacuum of 20.0 0.2 kPa below atmospheric pressure at the receiver for the duration of each determination...
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ASTM D6079 11 Standard Test Method for Evaluating Lubricity of Diesel Fuels by the HighFrequency Reciprocating Rig (HFRR)
Ngày tải lên :
20/10/2014, 17:18
... and cleaned The image of the wear scar is captured using the microscope digital camera, and the dimensions of the major and minor axes of the wear scar are measured and recorded Significance and ... item mentioned in this standard Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely ... in the operation of the component.6 5.3 The wear scar generated in the HFRR test is sensitive to contamination of the fluids and test materials, the temperature of the test fuel, and the ambient...
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Fossil Fuels
Ngày tải lên :
27/01/2016, 15:10
... of proven reserves of conventional liquid oil, but huge deposits of oil sands in the Athabasca region of western Canada bring 31 Fossil Fuels Sedimentary basins and major oil and gas fields of ... sands Tar sands are deposits of loose sand or partially consolidated sandstone that are saturated with highly viscous bitumen, a solid or semisolid form of petroleum Oil recovered from tar sands ... is measured in cubic metres at a pressure of 750 mm of mercury and a temperature of 15 °C (that is, at standard sea-level pressure and a temperature of 60 °F The conditions under which it is...
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Sustainability of an energy conversion system in Canada involving large-scale integrated hydrogen production using solid fuels
Ngày tải lên :
05/09/2013, 14:58
... or demand factor and a process requiring equipment maintenance [14,68,72,73] A value of is assigned if the element or process has high load and demand with lower maintenance and a value of is ... University of Toronto, Canada, 1987 He is a Professor of Mechanical Engineering at the University of Ontario Institute of Technology in Oshawa, Canada, where he served as founding Dean of the Faculty of ... indicates the level of recyclability or reuse of the element or process [68,72,73] A value of is assigned if most of the element or process is recyclable or reusable and a value of is assigned if...
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Alternate strategies for conversion of waste plastic to fuels
Ngày tải lên :
27/11/2013, 21:35
... polymers demand in the country Table documents the demand of different polymers in India during years 1995-96, 2001-02, and 2006-07 The comparison of demand and consumption from Tables and indicates ... Germany, U.K, the Netherlands, Japan, France, and the United States of America According to the government of India, import data of more than 59,000 tons and 61,000 tons of plastic waste have found ... environmental problem of disposal of plastic waste It also offers the higher cracking ability of plastics, and the lower concentration of solid residue in the product [3] 4.2.1 Mechanism of Catalytic...
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Knut Einar Rosendahl (ed.) Social Costs of Air Pollution and Fossil Fuel Use – A Macroeconomic Approach pdf
Ngày tải lên :
06/03/2014, 16:20
... reflect the kind of use of the model Thus, MSG-EE offers interesting studies of e.g environmental effects of both various levels and compositions of economic activity As energy and environmental ... maintained and 50 per cent replaced The prices of maintenance and replacement of materials depend inter alia on the extent of damage, building size and shape, design, material quality and choice of contractor ... Studies 99 Social Costs of Air Pollution of Norway, and the rest of the country (mainly rural) In the north the values for sulphur dioxide, ozone, rain, time of wetness and acidity of precipitation...
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Unconventional Fossil-Based Fuels potx
Ngày tải lên :
06/03/2014, 21:20
... Costs of Synthetic Crude Oil from Integrated Mining and Upgrading of Oil Sands, with and Without Carbon Capture and Storage, and of Conventional Crude Oil in 2025, Versus Different Costs of CarbonDioxide ... that of the city of Calgary (Woynillowicz, Severson-Baker, and Raynolds, 2005; Griffiths, Woynillowicz, and Taylor, 2006) Production of one bbl of SCO by mining requires between and 4.5 bbl of water ... 54 Estimated Unit Costs of Synthetic Crude Oil from Steam-Assisted Gravity Drainage with Upgrading of Oil Sands, with and Without Carbon Capture and Storage, and of Conventional Crude Oil in...
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Fossil Vertebrates of Arabia_2 potx
Ngày tải lên :
23/03/2014, 01:20
... spread of grassland major climatic regimes intertace in this region and adapted fauna (Gabw1ia and Chochieva, 1982; the climate and weatl1er of the Arabian Peninsula MacFadden and Ceding, 1994), and ... expansion of grassland and of graz ing-adapted faunas has been described in South America (Pascual and Juareguizar, 1990), Australia (Stein and Robert, 1985), and North America (Mac.Fadden and Ceding, ... I , and Raven, R H 1978 Late Creta tinental exchange Analyses of lithofacies and associ ceous and Tertiary vegetation history of Africa In ated fauna and flora indicate an open woodland Bio...
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Fossil Vertebrates of Arabia_1 pot
Ngày tải lên :
23/03/2014, 01:21
... VVhybrow and Andrew Hill Summary and overview of the Baynunah fauna, Emirate of Abu Dhabi, and its context Andrew Hill and Peter] Whybrmv Histor y of palaeontological research in the Western Region of ... Republic of Yemen (collaborating with the Ministry of Oil and Mineral Resources and the Uni versity of Sana'a) has produced the first hints of a Tertiary terrestrial fauna and flora, and the ... metres of sandy limestones and clays with minor conglomerates, and underlies 40 metres of unfossiliferous, homogeneous sandstones, whose origin may be either fluvial or aeolian The top of the Hofuf...
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