design elements for the reactor regenerator system
PetroleumThermal and catalytic processes in petroleum refining 2003
Ngày tải lên :
22/08/2014, 10:06
... parameters and the selection of the optimal operating conditions, selection of the reactor type, the design of the reaction equipment and of the other processing steps, the limitations due to the heat ... issues pertaining to the design of the reaction equipment, which results in the unity of the theoretical bases with the design solutions adopted for commercial equipment and the quantitative aspects ... and the residence time within the reactor will determine how close the actual performance will approach the theoretical one The use of classical methods for computing equilibrium compositions for...
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Sulfonic acid catalysts based on porous carbons and polymers
Ngày tải lên :
14/09/2015, 08:39
... Following these pioneering works, the postoxidative synthesis strategy has been expanded to the use of other different surfactants and synthesis conditions Joaquín Pérez-Pariente described the synthesis ... Tailoring the textural properties of the catalyst structure and tuning the acidity of the active site can enhance the performance of the mesoporous materials Propylsulfonicmodified SBA-15 afforded ... caused by the loss of the SBA-15 silica mesoporosity by the dominant deposition of the Nafion resin over the external surface of the silica particles, which inhibits the effective role of the mesostructured...
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The European Environmental Bureau (EEB) The European Federation for Transport and Environment (T&E) Seas At Risk (SAR) The Swedish NGO Secretariat on Acid Rain pot
Ngày tải lên :
15/03/2014, 20:20
... brought forward to six months after the entry into force of the directive for northern European sea areas (the Baltic and the North Sea with the inclusion of the English Channel), and the limit ... text, the proposed deadline for this measure was January 2008 The next step will be for the European Parliament to arrive at their second reading, which is expected by April 2005 The fact that the ... (depending on the fleet turnover rate) The Commission’s White Paper on the Common Transport Policy (CEC, 2001c) proposed the development of EU-wide charging systems for the infrastructure used by the maritime...
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Báo cáo hóa học: " Impacts of Post-metallisation Processes on the Electrical and Photovoltaic Properties of Si Quantum Dot Solar Cells" potx
Ngày tải lên :
21/06/2014, 07:20
... resistance is largely due to the reduction of the material’s resistivity The implication of the results is that the H2 in the forming gas is responsible for the improvement of the cell material Hydrogen ... of the n-type layer (Fig 8) It can be seen from the data that the 250°C N2 gas anneal has a negative impact on the cell’s contact resistance, while the forming gas anneals improve the contact The ... in Fig 6b), while the slope of the line equals to nkT/q Thus, the ideality factor n = slope/ VT, where VT = kT/q is the thermal voltage The ideality factor (n) extracted for the cells investigated...
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Methanol oxidation on moo3tio2 catalysts
Ngày tải lên :
11/07/2014, 18:08
... vicinity for oxidation to formaldehyde [ 19,32 ] The decrease in the rate of formaldehyde formation coincides with the increase in propene formation in isopropanol decomposition, indicating the appearance ... which is further transformed into methyl formate The decrease in the rate of methyl formate formation with an increase in molybdenum coverage, which is observed in the present work for high surface ... below the monolayer The selectivities to other products of methanol transformation (methylal, methyl formate and dimethyl ether) depend considerably on the type of TiO~ support and on the molybdenum...
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Báo cáo khoa học: "Regional scale effects of base cation fertilization on Norway spruce and European beech stands situated on acid brown soils: soil and foliar chemistry" pdf
Ngày tải lên :
08/08/2014, 14:21
... through the soil profile after dolomite application was more rapid for the spruce than for the beech stands On the other hand, dolomite tended to reduce soil and leave K concentration only in the ... was therefore probably due to the greater variability of exchangeable cation contents in the beech compared to the spruce stands, as illustrated by the respective coefficients of variation In the ... layers For instance, exchangeable Al still accounted for 57% (spruce) and 54% (beech) of the ECEC in the 0–10 cm layer of the F2-treated plots (figure 1a) The proportion of Al was still higher in the...
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Báo cáo lâm nghiệp: " Radial growth of mature pedunculate and sessile oaks in response to drainage, fertilization and weeding on acid pseudogley soils" ppt
Ngày tải lên :
08/08/2014, 18:21
... part in the total evapotranspiration of the forest (Loustau and Cochard, 1991) and therefore in the lowering of the water tables in the soil (positive role) This explains that cerns The results ... cored to the pith with a 5-mm Pressler corer, at a height of 2.80 m (to minimize the negative effects on the wood quality of the butt log), from the northern side of the trunk Throughout the text, ... plantations of Pinus elliottii On the other hand, in the mature oak stands we have studied, the duration of the fertilizing effect depended on the age of the trees: the positive effect tended to...
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Báo cáo y học: " Role of taurine on acid secretion in the rat stomach" ppsx
Ngày tải lên :
10/08/2014, 05:21
... slices of the rat stomach Samples were incubated at 37°C for 30 before the addition of taurine were treated within for the production of cAMP Each column represents the mean ± SEM of the percent ... submucosal plexus of the enteric nervous system in the stomach Taurinergic neurons in the muscle layer of the gastrointestinal (GI) tract might be involved in motility of the GI tract and the function ... evoked by the drug)/(average spontaneous secretion) The average spontaneous secretion was calculated using acid from the four periods immediately before exposure to the test drugs Finally, the secretory...
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Báo cáo khoa học: "Clinical review: Influence of vasoactive and other therapies on intestinal and hepatic circulations in patients with septic shock" ppsx
Ngày tải lên :
12/08/2014, 20:20
... volunteers system The liver has a unique and special blood supply that includes both arterial (the common hepatic artery) and venous (the portal vein) inflow The portal vein supplies 75–80% of the liver ... of gelatin on the PCO2 gap [20] These studies suggested no better effect of one colloid over the others on splanchnic haemodynamics, and the use of colloids must be weighed against their side effects ... septic shock However, in these studies the measurements were focused on the effect of the drug on splanchnic blood flow or a surrogate such as the PCO2 gap, but none of these studies reported convincing...
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Isomerization of alpha pinene oxide over solid acid catalysts
Ngày tải lên :
08/11/2015, 17:15
... If the drying step is performed slowly, the catalytic particles will migrate towards the external surface of the support Therefore, to have a uniform distribution 12 of catalyst throughout the ... oC Furthermore, they reported that the amount of B2O3 deposited on SiO2 did not depend on the surface area or on the average pore diameter, but on the pore volume of the support The larger the ... dropwise to the solution under stirring The gel was then aged for another h at room temperature before hydrothermal treatment for 48 h at 100 oC in Teflon-lined stainless steel autoclave The product...
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RESEARCH ON THE CHANGE OF 2-AP AND OTHER VOLATILE COMPOUNDS IN PROCESSING BUN FROM RICE
Ngày tải lên :
28/08/2013, 16:28
... 250C The injection was performed in splitless mode first (5 for SPME and for SDE), then in split mode to the end of the cycle (38.5 for SPME and 70 for SDE) After warming the column at 400C for ... added as an internal standard The solution was equilibrated at 80°C for minutes then the fiber was introduced in the headspace surrounding rice at the same temperature for 15 minutes (Phan Phuoc ... extracted and analyzed by the same conditions as described above The analytical results showed that there is no 2-AP peak in the Korea rice samples at the Rt (9.498 minute) as the 2-AP peak of Pandan...
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Một số chuyên đề ôn tập Hóa - acid cacboxylic
Ngày tải lên :
04/09/2013, 16:10
... HCOOH ; C2H5COOH B CH3COOH ; C2H3COOH D A, B xảy Giải: Chọn câu D Công thức chung A, B : x mol Theo đề ta có: Vậy A, B axit hữu đon chức nNaOH = naxit = 0,22 mol Tính mA = 4,6 gam, mB = 10,32...
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INFLUENCE DISTRIBUTIONS OF ACID DEPOSITION IN MOUNTAINOUS STREAMS ON A TALL CONE-SHAPED ISLAND, YAKUSHIMA
Ngày tải lên :
05/09/2013, 09:08
... those in other parts of island The values of pH were lower in the southwestern streams The values of alkalinity and the concentrations of Ca2+ and Mg2+ were lower in the southern streams These distributions ... Although the concentrations of inorganic ions in these streams were similar for the most part to those in other areas, the concentrations of Na+ and Cl- were higher Because the Cl- in the streamwater ... catchment of the western part of the island are responsible for the low pH and high concentrations of anions in the western streams The height of catchment boundaries, the direction of the main axis...
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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
... below 115 The index reflects the degree of unsaturation of the oil, i.e., the number of bonds available for oxygenation (the higher the iodine index, the higher the number of bonds suitable for hydroperoxides ... decreasing the surface tension, b) preheating to diminish the viscosity for improving the internal formation of the mixture and the combustion, c) mixture with other fuels, to give a better internal formation ... be believed that the lean flame out region (LFOR) is one of the main contributors to the HC concentration in the exhaust LFOR is the region that is nearer to the leading edge of the spray (downwind)...
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Effects of time of heatsetting on the tensile properties of ingeo™ poly (lactic acid) (PLA) fabric
Ngày tải lên :
05/09/2013, 16:10
... resilience [%] The specimen were clamped between two chucks each of 20cm long A constant force of 200g was applied by attachinga weight to the front chuck of the specimen When the test started, the back ... resilience RT [%] Tensile Resilience RT [%] is the ability of the fabric to recover from extension when applied force is removed Table shows the result for the effect of time of heatsetting on tensile ... patented and minimal cost continuous process for the production of PLA polymer The process begins with the continuous condensation of lactic acid to form a low molecular weight PLA pre polymer...
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Reporting on Other Data Sources.
Ngày tải lên :
05/10/2013, 08:48
... mimic the report: using using using using using using using using using System; System. Collections.Generic; System. ComponentModel; System. Data; System. Drawing; System. Text; System. Windows.Forms; System. Data.OleDb; ... stored in the XML format can work on crossplatform scenarios For example, if you have information in the XML format, it is easy to share between the UNIX and the Windows platforms XML is an extensive ... System. ComponentModel; System. Data; System. Drawing; System. Text; System. Windows.Forms; Microsoft.Reporting.WinForms; namespace XMLReport { public partial class Form1 : Form { public Form1() { InitializeComponent();...
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Tài liệu To establish an Office on Women’s Health within the Department of Health and Human Services, and for other purposes pdf
Ngày tải lên :
13/02/2014, 07:20
... COMPOSITION. The Coordinating Com- mittee shall be composed of the Directors of the Na- tional Centers ‘‘(3) CHAIRPERSON. The Director of the Of- fice shall serve as the chairperson of the Coordi- ... section as the ‘Of6 fice’) The Office shall be headed by a director who shall be appointed by the Director of the Agency ‘‘(b) PURPOSE. The Director of the Office shall— ‘‘(1) determine the current ... COMPOSITION. The Coordinating Com- 14 mittee shall be composed of the Directors of the 15 Centers and Offices 16 ‘‘(3) CHAIRPERSON. The Director of the Of- 17 fice shall serve as the chairperson of the...
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Tài liệu The Internal Revenue Service Is Not Adequately Protecting Taxpayer Data on Laptop Computers and Other Portable Electronic Media Devices docx
Ngày tải lên :
18/02/2014, 04:20
... including the names, photographs, and telephone numbers of spies/informants working for the United States military According to the news media, the documents appeared to be authentic, but the accuracy ... Investigations, the law enforcement organization for internal IRS affairs On July 10, 2006, the Chairman of the House Committee on Government Reform sent a letter to the Secretary, Department of the Treasury, ... must report the incident to the TIGTA Office of Investigations for further investigation and possible recovery efforts In addition, employees must report the incident to the CSIRC for tracking...
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