measurement of roots in laboratory media
Soil and Environmental Analysis: Physical Methods - Chapter 13 ppt
Ngày tải lên :
11/08/2014, 15:20
... Porosity Since gases move almost exclusively in the air-filled pores, measurement of porosity is vital to the understanding of gas movement in soil Air-filled porosity is often used as an indicator of ... problems of sampling, but have their own complexities Methods involve withdrawal and analysis of gases injected into the soil or nondestructive sampling of trace gases McIntyre and Philip (1964) pointed ... measurement of diffusion The same techniques are generally applicable in the field and in the laboratory Steady-state laboratory techniques offer the advantage of preserving laminar flow of gases...
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Definition of Greenhouse gases
Ngày tải lên :
09/06/2016, 14:47
... lapse of formerly declining trends in carbon intensity of both developing and developed nations China was responsible for most of global growth in emissions during this period Localised plummeting ... defined as the ratio of the mass m (in kg) of X in the box to its removal rate, which is the sum of the flow of X out of the box (Fout), chemical loss of X (L), and deposition of X (D) (all in ... caused most of the increases in global average temperatures since the mid-20th century".[15 ]In AR4, "most of" is defined as more than 50% Gas Preindustrial level Current level Increase since 1750...
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Impact of the global forest industry on atmospheric greenhouse gases potx
Ngày tải lên :
24/03/2014, 05:20
... small amount of printing required on the packaging Tissue and paper towel converting operations consist mainly of cutting, folding and placing in printed packages Converting sawnwood into pallets ... processing to convert them from intermediate to final products For example, the process of converting rolls of uncoated freesheet into reams of office paper involves only cutting and packaging, ... in almost no emissions of greenhouse gases, but other products involve much more final processing Corrugated containers, for instance, require cutting, folding, corrugating, gluing and printing...
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Solid Waste Management and Greenhouse Gases A Life-Cycle Assessment of Emissions and Sinks potx
Ngày tải lên :
31/03/2014, 13:20
... first of its kind in the US The West Coast Governors’ Global Warming Initiative was started by the Governors of California, Oregon, and Washington in 2003 The goals of the initiative include combining ... Manufacturing Source Decrease in GHG emissions, Increase in forest carbon NA Reduction relative to the baseline of sequestration manufacturing Recycling Decrease in GHG emissions due Increase in forest ... reduction initiatives A version of the software program was made available for use by private businesses and institutions during the summer of 2001 CCP software subscriptions, including technical...
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ENCYCLOPEDIA OF ENVIRONMENTAL SCIENCE AND ENGINEERING - GREENHOUSE GASES EFFECTS ppsx
Ngày tải lên :
10/08/2014, 20:20
... in the media UNCERTAINTIES IN MODEL PREDICTIONS In summarising the current state of knowledge and understanding of the likely magnitude, timing and impacts of enhanced greenhouse warming, it ... during the first 30 years (possibly an artefact of an inadequate spin-up period) but thereafter remains rather steady at an average increase of about 0.3 mm/day, the main increases occurring ... Reduction in wind speed caused by the aerodynamic drag of mountains, oceans waves, and by the breaking of ororgraphically-induced gravity waves are computed In calculating changes in the extent...
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ONLINE MONITORING OF NITROGEN GREENHOUSE GASES FROM WATER RECLAMATION PLANTS
Ngày tải lên :
27/11/2015, 12:12
... sedimentation tanks Empty basin P1 P3 P4 P5 P6 P2 Basin Basin Basin Basin Basin Figure 3.2 Sketch of BNR bioreactor (Train 2) in CWRP 27 Basin The designed length and width of the train is around 117 by ... online monitoring from air duct instead of wastewater surface may result in underestimation Furthermore, the missing period of measurement, including night time and weekends, may also lead to inaccuracy ... (4) Teflon tubing connecting SEIFC and gas analyzers 25 Figure 3.2 Sketch of BNR bioreactor (Train 2) in CWRP 27 Figure 3.3 Sketch of one basin of BNR reactor in SW of UPWRP 30...
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Báo cáo y học: " Rationale for one stage exchange of infected hip replacement using uncemented implants and antibiotic impregnated bone graft"
Ngày tải lên :
26/10/2012, 09:53
... S, Kanchanapoom T, Khardori N In vitro activity of vancomycin, quinupristin/dalfopristin, and linezolid against intact and disrupted biofilms of staphylococci Ann Clin Microbiol Antimicrob 2005;4:2 ... eradication of planktonic residues but are not effective in eliminating micro-clusters disrupted from biofilms that may be the cause of recurrence after an indefinite period of time Fragments of biofilms ... S, Tunney M Incorporation lin-susceptible, methicillin-resistant, vancomycin-intermediate and vancomy- of large amounts of gentamicin sulphate into acrylic bone cement: effect on cin-resistant...
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Impacts of Greenhouse Gas on Feed and Livestock Production
Ngày tải lên :
14/04/2013, 16:04
... Not considering respiration Livestock’s share in methane emissions 37 percent Livestock’s share in nitrous oxide emission 65 percent Source: Steinfeld et al (2006) Including production of feed crops ... (2000) Effect of feeding characteristics on methane production • Digestible organic matter or energy • Residence time in the rumen and level of intake • Source of C and pattern of fermentation ... contribution climate change in CO2 equivalent 18percent Includingpasture degradation and assuming that two-thirds of land use change is livestock related Livestock’s share in carbon dioxide emissions...
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Tài liệu Báo cáo Y học: Phosphatidylinositol synthesis and exchange of the inositol head are catalysed by the single phosphatidylinositol synthase 1 from Arabidopsis docx
Ngày tải lên :
22/02/2014, 04:20
... extracted and the amount of labelled PtdIns was determined (Table 1) In the absence of CMP, the presence of AtPIS1 allows the incorporation of labelled inositol into PtdIns, according to the enzymatic ... and inositol (Fig 1C) or M9 medium lacking inositol (Fig 1D) were incubated in conditions of exchange in the presence of PtdIns isolated from soybean The radio-HPLC elution profile of PtdIns shows ... rate of synthesis of nmol PtdInsÆmin)1Æmg)1 (Fig 2), the concentration of CMP in a reaction mixture of 200 lL is lM after with 50 lg protein As our incubation conditions use 50 lg protein incubated...
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detection of organic gases using tio2 nanotube - based gas sensors
Ngày tải lên :
19/03/2014, 16:47
... sensor capable of detecting various organic gases due to the increasing need for air quality monitoring in the environment and the workplace [5] In this work, we fabricated porous gas sensing films ... composed of commercial TiO2 particles and TiO2 nanotubes obtained at 230oC, respectively, indicating that the porosity of the film was increased by using the nanotubular particles The ball-milling ... results obtained suggests that the microstructure control of sensing layers in terms of particle packing density and pore size distribution is quite effective for improving the sensitivity of TiO2-nanotube...
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semiconducting metal oxide sensor array for the selective detection of combustion gases
Ngày tải lên :
20/03/2014, 13:07
... degree in electronic engineering in 1984 from Minsk Radio Engineering Institute and the PhD degree in electronic engineering in 1999 from the Institute of Electronics of the National Academy of Sciences ... combining multiple classifiers, in: Proceedings of the 7th International Conference on Information Procedure And Management of Uncertainty, Paris, France, 1998 J Kittler, M Hatef, R.P.W Duin, ... when the principle components of the individual sensors are combined From the In2 O3/SnO2 results, we see that the poor selectivity of In2 O3 actually degrades the performance of the (individual)...
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absorption of nitrous gases
Ngày tải lên :
09/05/2014, 17:03
... number of gram-mols.) of nitric oxide M = Initial volume (or number of gram-mols.) of oxygen pc = Volume of oxygen changed in time t in 100 volumes of mixture V = Total initial volume of gas ... hydrogen in an equimolecular mixture of oxygen and nitrogen The question of the production of oxides of nitrogen in explosions in which excess of air is present is discussed by Dobbelstein, and in ... grams of nitric acid per cub metre at atmos pressure Increase in the yield of nitric oxide can be effected in two ways :— (a) By increase in pressure (b) By increase in the proportion of oxygen...
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SYNTHESIZE AND INVESTIGATE THE CATALYTIC ACTIVITY OF THREE-WAY CATALYSTS BASED ON MIXED METAL OXIDES FOR THE TREATMENT OF EXHAUST GASES FROM INTERNAL COMBUSTION ENGINE
Ngày tải lên :
12/05/2014, 17:14
... endothermicity of this reaction resulting in sinstering of the catalyst, in surface changes, and in the intensification of side process This is probably the reason why the kinetics of a number of hydrocarbon ... Institute of Chemical Industry) TGA-DSC spectra were obtained using NETZSCH STA 409PC instrument (Laboratory of the Petrochemical Refinering and Catalytic Materials, School of Chemical Engineering, ... incomplete mixing of the gases and the wall quenching effects of the colder cylinder walls The NOx is formed during the very high temperatures (>1500 ◦C) of the combustion process resulting in...
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semantic web and peer-to-peer decentralized management and exchange of knowledge and information
Ngày tải lên :
03/06/2014, 02:00
... model of mapping creating and use, where the success of mapping creation is discovered by the use of mappings in a self-organizing manner 3.4 Building and Maintaining Semantic P2P Applications Intelligent ... the German Copyright Law Springer is a part of Springer Science+Business Media springeronline.com © Springer-Verlag Berlin Heidelberg 2006 Printed in Germany The use of general descriptive names, ... dimensions of difficulty, viz pragmatics of ontology use, sloppiness of ontology mappings, scalability of mapping creation, functionality of mapping execution and evaluation of mapping quality...
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GREENHOUSE GASES – EMISSION, MEASUREMENT AND MANAGEMENT pptx
Ngày tải lên :
28/06/2014, 17:20
... compaction through use of the heavy farm machinery and grazing animals (pugging) in wet soil conditions (especially in winter) could help to maintain aerobicity in soils, which in turn may reduce ... dominates over that of N2O at lower mineral NO3- content, increasing organic C contents, increasing soil pH (above 6.5), lowering O2 partial pressure or increasing WFPS; above 70% Manipulation of ... The Role of US Households in Global Carbon Emissions 171 Md Rumi Shammin Chapter The Uncertainty Estimation and Use of Measurement Units in National Inventories of Anthropogenic Emission of Greenhouse...
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GREENHOUSE GASES – CAPTURING, UTILIZATION AND REDUCTION doc
Ngày tải lên :
28/06/2014, 17:20
... the operating conditions of CO2-producing processes Developing and improving CO2 storage including terrestrial biomass, deep oceans, saline aquifers, and minerals Utilizing and sequestering CO2 ... use of limestone, incineration of waste, etc in industrial processes From anaerobic fermentation, etc of organic matter in paddy fields and waste disposal sites Generated in some manufacturing ... source of man-made CO2 is combustion of fossil fuels Stabilizing the concentration of atmospheric CO2 will likely require a variety of actions including a reduction in CO2 emissions Since the Industrial...
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Báo cáo toán học: "Modelling age- and density-related gas exchange of Picea abies canopies in the Fichtelgebirge, Germany" docx
Ngày tải lên :
08/08/2014, 14:22
... determined independently by means of cuvette gas exchange measurements of branches with up to needle age classes [17] and were not adjusted in the process of examining xylem sapflow data No information ... our understanding of flux variation that occurs in intermediate stages and with intermediate forest structures, as shown for instance by Buchmann et al [13] Based on measurements of needle gas ... calculated using a leaf area weighted sum of the rate of water use in all subsections of the tree (determined by multiplying the average transpiration rate for all matrix points in the subsection...
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Báo cáo khoa học: "Influence of shade on photosynthetic gas exchange of 7 tropical rain-forest species from Guadeloupe (French West Indies)" docx
Ngày tải lên :
08/08/2014, 19:21
... 27°C using a water cooling system where the measurement chamber was submerged in a tank containing cooled water Relative humidity of the air was maintained between 70 and 90% by bubbling air into ... regeneration of these species (Ducrey and Labbé, 1985) The study of the seedlings in relation to the intensity of regeneration fellings gave us preliminary information about light response of the species ... air into a water flask maintained at the temperature of the desired dew point Lighting was achieved using a mobile stand of tungsten-halogen quartz lamps with a unit power of 000 W Photosynthetic...
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Báo cáo lâm nghiệp: "doubling atmospheric CO concentration on 2 matter distribution and CO exchange of 2 yr growth, dry 2 old sweet chestnut trees (Castanea sativa Mill.)" pptx
Ngày tải lên :
09/08/2014, 04:20
... the main branches grew After the end of July, 62% of the enriched plants ceased growth as compared with 37% of the controls The early onset of yellowing and the stopped terminal bud growth indicates ... elevated C0 levels The 28% increase in daily carbon in approximate agreement with the 43% increase in total dry matter of C0 chestnut plants observed -enriched in the growth measurements exchange ... slope of C0 concentration over time in the whole chamber (Gaudillere and Mousseau, 1989) During the two st wk, the C0 concentration in the chamber was maintained at 330 ppm It was then increased...
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Báo cáo lâm nghiệp: "Response of shoot growth and gas exchange of Picea abies clones to rain acidity and the addition of ions" ppt
Ngày tải lên :
09/08/2014, 04:20
... were obtained for top shoot growth of clones 1011 and 1019, the latter showing lower final lengths (A 112-136 mm), lower b-values (b 4.8-5.7) and inflexion points on d 35-38 The growth of lateral ... deduced from the slopes of = = = = = the curves in Fig 2a Relative growth rates (RGR) are plotted in Fig 2b The lines connecting the RGR values for different time periods of each pH treatment cross ... differences of the parameter estimates between the treatments (P < 0.05) Typical values were: A 142-160 mm, b 5.7-6.9, k 0.13-0.15 d-! The point of inflexion, where half of the final length was...
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