ozone sulphur dioxide nitrogen dioxide and carbon dioxide

... (SEM) and Energy Dispersive X-ray analysis (EDX) were used to observe the structural morphology and composition of activated carbon RESULTS AND DISCUSSION 3.1 BET Surface Area of Activated Carbon ... pyrolyzed at different activation temperatures under nitrogen and carbon dioxide are reported in Table The textural characteristics of activated carbon involving BET surface area, micropore surface ... water for several times until pH 6–7 and then dried in the oven at 110oC In the second stages of pyrolysis, purified carbon dioxide gas was used instead of nitrogen with the contact time of 90...

Ngày tải lên: 07/08/2014, 14:20

... Plant of Andorra (Teruel, Spain) and supported by the National Electric Company ENDESA REFERENCES Adams MB, O’Neill EG (1991) Effects of ozone and acidic deposition on carbon allocation and mycorrhizal ... ozone was generated by two dried air feeded Triozon generators Possible nitrogen oxides were then removed by bubbling the output of the ozonator through a water wash The ozone and the 1% in nitrogen ... acidification or SO and O deposition have been reported under natural and experimental conditions (Dighton and Skeffington, 1987; Markkola and Ohtonen, 1988; Meier et al, 1989; Dighton and Jansen, 1991)...

Ngày tải lên: 08/08/2014, 18:21

... JF, Kavanagh BP: Carbon dioxide attenuates pulmonary impairment resulting from hyperventilation Crit Care Med 2003, 31: 2634-2640 Carbon dioxide: the new therapy for ARDS? Laffey and colleagues ... debate about permissive hypercapnia, and in particular the timing and efficacy of bicarbonate therapy/haemofiltration to treat the resulting acidosis, this simple and free approach certainly warrants ... Study Group: Early use of the pulmonary artery catheter and outcomes in patients with shock and acute respiratory distress syndrome: a randomized controlled trial JAMA 2003, 290:2713-2720 Brower...

Ngày tải lên: 12/08/2014, 20:20

... cerebral carbon dioxide reactivity Conversely, in clinical trials using transcranial Doppler, Terborg and colleagues [5] and Bowie and colleagues [6] observed significantly impaired cerebral carbon dioxide ... Conclusion In contrast to the experimental and clinical data of Rudinsky and colleagues [7], of Terborg and colleagues [5] and of Bowie and colleagues [6], carbon dioxide reactivity seemed not to be ... the relationship between carbon dioxide reagibility of the VMCA, CCP, CBF and jugular venous oxygen saturation (SjO2) and the age of the patients, the Acute Physiologic and Chronic Health Evaluation...

Ngày tải lên: 13/08/2014, 10:20

... separated from the carbon dioxide elimination that depended on reduction in carbon dioxide tension One purpose of ventilation is to effect carbon dioxide exchange and achieve and maintain the target ... venous pH; PvCO2, venous carbon dioxide tension; PaCO2, arterial carbon dioxide tension be estimated by using the shunt equation [8] The effect of shunt on dead space and carbon dioxide exchange reflects ... relationships between content and partial carbon dioxide tension and oxygen saturation in venous, arterial and pulmonary end-capillary blood Applying a simplified lung model, Mecikalski and coworkers [9]...

Ngày tải lên: 13/08/2014, 10:20

Ngày tải lên: 13/11/2014, 15:46

... (leaves, needles, rocks, and water), humidity of surfaces, macro- and micrometeorology (stomata closure) (UN-ECE 2006) Sulphur and nitrogen are markedly captured by the canopy and coniferous forests ... solar radiation and to hold the funnels approximately m above the ground There were collectors randomly distributed at the mountain spruce stand and at the highland spruce stand During the winter ... Element fluxes in precipitation and throughfall Annual bulk and throughfall fluxes of sulphur and nitrogen are depicted in the Fig with numerical values given in Table Sulphur fluxes were markedly...

Ngày tải lên: 07/08/2014, 10:21

... and foliage nitrogen concentration per unit area, Na were increased together by 50 and 20% respectively and the resulting values of Vcmax Carbon uptake, leaf area and nitrogen 529 and Jmax were ... Carbon and nitrogen distribution and accumulation in a New Zealand scrubland ecosystem, Can J For Res 30 (2000) 1246–1255 [46] Snowdon P., Benson M.L., Effects of combinations of irrigation and ... Westland, New Zealand: interpretation and correlation with the glacial stratigraphy, Quat Int 34–36 (1996) 163–176 [3] Benecke U., Nordmeyer A.H., Carbon uptake and allocation by Nothofagus solandri...

Ngày tải lên: 08/08/2014, 00:22

... atmospheric carbon dioxide and temperature on carbon partitioning, source-sink relations and respiration, Plant Cell Environ 14 (1991) 819-830 [19] Griffin K.L., Thomas R.B., Strain B.R., Effects of and ... variables as y and x and the allometric coefficient as the slope Analysis of covariance (ANCOVA) was used to test for equality of regression coefficients RESULTS as 2.3 Carbon and nitrogen analysis ... size Both CO and N treatments had small effects on leaf, stem and root C concentrations (tables I and II) CO enrichment had significant effects on C/N ratios (tables I and II) of stem and roots...

Ngày tải lên: 08/08/2014, 14:21

... Water and Carbon: The Chemical Basis of Life May 4, 2011 Solid ….ice! 고체…얼음 Chất rắn ወወወ băng ‫.وهي حالة ... estado de agregación de la materia en el que las sustancias no tienen forma ni volumen propio, adoptando el de los recipientes que las contienen ‫الغاز هو أحد حال ت المادة، ومثل السوائل فإن الغازا...

Ngày tải lên: 14/03/2013, 14:42

... Happe, 2001) Fermentative system, on the other hand, is carried out by facultative anaerobes and obligate anaerobes (Joyner and Winter, 1977; Nandi and Segupta, 1998) Among these microorganisms, ... production (Figures 1, 2) Figures and illustrated a reduction of glucose concentration and an increase of acetate and butyrate during hydrogen production at each nitrogen level and various initial acetate ... of nitrogen (3mM of total nitrogen) was higher than at high level of nitrogen (11 mM of total nitrogen) Control (no N added) had a lower number of cells than the production media containing nitrogen...

Ngày tải lên: 05/09/2013, 09:08

... Kuroda H.,(1991), Nitrogen Outflow Diagram in a Small Agricultural Area Having Uplands and Lowlands Trans JSIDRE 154,65-72.(in Japanese) Tabuchi T., (1998), Nitrogen Outflow Model with Nitrogen Removal ... decreases as it passes through the lowlands A wetland has a natural purification function for nitrogen and is therefore considered important in the curtailment of nitrogen loads flow into the lake ... Journal of Water and Environment Technology, Vol.3, No.2, 2005 fields and forests on a plateau and a wetland which includes a paddy field in the lowlands Initial investigation showed...

Ngày tải lên: 05/09/2013, 09:08

... (3) where NHi and NOi represent NH4-N and NO2+3-N in the ith layer [g-N/m2], respectively, and Nrice is the rice nitrogen [g-N/m2] The terms radv,NH,i and radv,NO,i are the NH4-N and NO2+3-N inflow ... production and water treatment and a detailed understanding of the nitrogen dynamics in VF constructed wetlands CONCLUSIONS In the experimental pots replicating VF constructed wetlands, a variety ... closely related with growth Assuming Monod-type nitrogen uptake kinetics (Selim and Iskandar, 1981) and ignoring the temperature effects, the NH4-N and NO2+3-N uptake by rice is described as rup...

Ngày tải lên: 05/09/2013, 09:38

... Chemistry and Pharmacological Potential of Fullerenes and Carbon Nanotubes CARBON MATERIALS: CHEMISTRY AND PHYSICS A comprehensive book series which encompasses the complete coverage of carbon materials ... coverage of carbon materials and carbon- rich molecules from elemental carbon dust in the interstellar medium to the most specialized industrial applications of elemental carbon and its derivatives A ... fullerenes and carbon nanotubes (CNTs) play an important role These new allotropic forms of carbon have been discovered in the last two decades, and, since then, they have stimulated the curiosity and...

Ngày tải lên: 17/02/2014, 05:20

... The top soil is sandy clay loam soil and bottom soil is clay Soil texture in top soil found natural forest and 1, 5, 15 and 20 years old rubber plantations to have sandy clay loam and 10 years old ... bottom soil, natural forest and 20 years old plantations have clay soil, and 10 years old plantations have sandy clay loam to clay and and 15 years old plantation have sandy clay loam to clay soil ... Rubber Plantations and Natural Forest Biomass carbon storages (1) Rubber plantations Rubber trees synthesis light and absorb carbon dioxide to produce carbohydrate This result in carbon accumulation...

Ngày tải lên: 21/02/2014, 04:20

... to ozone (Fig 5) These findings confirm the validity of our sensor response to ozone Fig shows the responses of sample and sample at ppm of ozone gas The improved responses of the sensor under ozone ... of ozone detection using sample In our experiment, the sensor response, S, was defined by S = R/Ro × 100, where R = Rt − Ro Rt and Ro were the resistance values of the sensor with and without ozone ... of ozone and the same period of gas injection and degassing, the change of the sensor response was 11% This change was a little bit more than that of the first cycle At Y Park et al / Sensors and...

Ngày tải lên: 19/03/2014, 16:47

... temperature to LPG and ethanol gas are respectively shown in Fig 3a and b It seems that the optimized operating temperatures of the sensor to ethanol gas and LPG are around 350 and 250 ◦ C, respectively ... multiwalled carbon nanotubes by chemical vapor deposition, Carbon 44 (2006) 1166–1172 [8] Y.-L Liu, H.-F Yang, Y Yang, Z.-M Liu, G.-L Shen, R.-Q Yu, Gas sensing properties of tin dioxide coated carbon ... Environment and Chemistry, Hung-Yen University of Technology and Education His research activities are related with the design, fabrication and characterization of organic–inorganic hybrids and nanomaterials...

Ngày tải lên: 19/03/2014, 16:48

... shell and electron trapping by a carbon nanotube core and following reactions where CNT is a carbon nanotube, hVB is a hole in TiO2 valence band, eCB is a electron in TiO2 conduction band, and ... band into the conduction band leaving a hole behind Excited state conduction-band electrons and valence-band holes can recombine and dissipate as heat The valence-band holes are powerful oxidants, ... compound), glass- and carbon fibers, ceramic materials, polymers, and activated carbon have been widely used as a catalytic support However, single-walled and multi-walled carbon nanotubes have...

Ngày tải lên: 20/03/2014, 13:06

... metals Among carbon supports, activated carbon, carbon blacks and carbon black composites receive most attention The evidence supports growing interest in novel carbon supports such carbon nanotubes, ... Hydroprocessing Catalysts 3.1 Chapter Carbon Black Activated Carbon Carbon Nanomaterials Fullerenes Diamond and Graphite Involvement of Carbons Combined Effect of Carbon and Active Metals 4.2.1 Conventional ... these carbons Amorphous forms of carbons such as carbon black (CB) and activated carbon (AC) have been used in various industrial applications most extensively.1 Novel carbon materials, e.g., carbon...

Ngày tải lên: 01/04/2014, 10:26

... reactions between ozone and phenol, and ozone and benzene, were found to be A 106 and M –1sec–1, respectively.12–14 It should be noted, however, that these values correspond to pH and 20˚C As shown ... occurring ozone and explains the electronic structure of the ozone molecule, which is responsible for ozone reactivity Chapter reviews the chemistry of ozone reactions in water by studying direct and ... direct ozone reactions and explains that these studies can be developed through experimental homogeneous and heterogeneous ozone reactions Chapters and continue with studies on direct ozone reaction...

Ngày tải lên: 01/04/2014, 10:35