design of large openings in flat heads
pressure vessel design manual
Ngày tải lên :
02/04/2014, 16:47
... moment of inertia of stiffener, in I, = required moment of inertia of stiffener, in. 4 I: = required moment of inertia of combined shell4 ring cross section, in L, = for cylinders-the design length ... psi D = inside diameter of cylinder, in Do =outside diameter of cylinder, in ]I1, outside diameter of the large end of cone, in = D, = outside diameter of small end of cone, in E = modulus of elasticity, ... =thickness of head, new, in tb =thickness of base portion of clad material, in t, =thickness of cladding, in, R, =inside radius, new, in R, = inside radius, corroded, in R, = outside radius, in D, =inside...
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Linear Minimum Mean-Square-Error Transceiver Design for Amplify-and-Forward Multiple Antenna Relaying Systems
Ngày tải lên :
20/11/2012, 11:31
... for joint design of F and G Initialize the algorithm with F0 where the N × N principle sub-matrix of F0 being Pr I , Tr(Rx ) N and N = min{NR , MR }, while the remaining entries of F0 being zeros ... multiplexing (OFDM) system over frequency selective fading channels Again, the forwarding matrix at relay and equalizer at destination are jointly designed by minimizing the total MSE of the output ... multiplexing (OFDM) system over frequency selective fading channels Again, the forwarding matrix at relay and equalizer at destination are jointly designed by minimizing the total MSE of the output...
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hybrid metal oxide and multiwall carbon nanotube films for low temperature gas sensing
Ngày tải lên :
19/03/2014, 16:48
... processing time was adjusted to 10 A controlled flow of oxygen was introduced inside the chamber 2.4 Gas sensing measurements The gas sensing properties of the different sensing films were tested in ... obtained by adding 0.7 mg of oxygen-functionalized MWCNTs to 350 mg of metal oxide (which gave a proportion of 1/500 wt.%) An adequate mixture of the two components was obtained by dissolving ... before injecting into the measurement chamber, by means of a gas chromatography syringe, the required volume corresponding to the lowest concentration of the gas to be measured Fifteen minutes...
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Metal Foams: A Design Guide pptx
Ngày tải lên :
28/03/2014, 16:20
... resistivity of metal foams 190 14.3 Electrical conductivity and relative density 191 References 193 15 Cutting, finishing and joining 194 15.1 Cutting of metal foams 194 15.2 Finishing of metal foams ... Crews of the Department of Materials Science and Engineering, MIT; Professor D Elzey, Dr D Sypeck and Dr K Dharmasena of the Department of Materials Science and Engineering, UVA; Dr John Banhart of ... Aluminum alloy + 1− 2% Calcium b) Foaming agent addition Thickened aluminum alloy + − 2% TiH2 (670 − 690 C) c) Isothermal foaming Foaming agent (TiH2) Foaming aluminum Metal drainage d) Cooling of...
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báo cáo hóa học:" Mid-term results and factors affecting outcome of a metal-backed unicompartmental knee design: a case series" pptx
Ngày tải lên :
20/06/2014, 04:20
... pre-operative clinical consultation and confirmed intra-operatively Patients with anterior knee pain, either as a clinical complaint or on pre-operative evaluation of knee extension against resistance, ... orientation The tibia was resected using an extramedullary alignment jig, with a minimum of millimeters of bone removed in the greatest depth of deformity A reciprocating saw was then used to make the ... over one indicating that the factor was an independent predictor of a higher risk of failure of UKA Patients that died or were lost to follow-up were excluded from this analysis Results Clinical...
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Metal Foams: A Design Guide docx
Ngày tải lên :
27/06/2014, 17:20
... resistivity of metal foams 190 14.3 Electrical conductivity and relative density 191 References 193 15 Cutting, finishing and joining 194 15.1 Cutting of metal foams 194 15.2 Finishing of metal foams ... Crews of the Department of Materials Science and Engineering, MIT; Professor D Elzey, Dr D Sypeck and Dr K Dharmasena of the Department of Materials Science and Engineering, UVA; Dr John Banhart of ... Aluminum alloy + 1− 2% Calcium b) Foaming agent addition Thickened aluminum alloy + − 2% TiH2 (670 − 690 C) c) Isothermal foaming Foaming agent (TiH2) Foaming aluminum Metal drainage d) Cooling of...
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METAL FORMING – PROCESS, TOOLS, DESIGN pps
Ngày tải lên :
29/06/2014, 13:20
... manufacture such kind of sheet metal parts Thickening of outer wall of cup parts with axial upsetting 2.1 Design of thickening process and thickening ratio in single upsetting In the SFP of cup parts ... plate of car with outer wall thickening Thickening of inner wall of cup parts with axial upsetting 3.1 Design of thickening process for inner wall of cup parts The forming process and methods of ... processing Stamping-Forging Processing of Sheet Metal Parts 39 b) Stamping-forging processing Figure 10 Scheme of forming process 3.2 Material store-up for inner wall using reverse drawing In the...
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Design, synthesis and applications of Metal Organic Frameworks
Ngày tải lên :
02/07/2014, 12:59
... benzene-1,4-dicarboxylic acid linkers (top inset box) coordinated to zinc ion cluster joints (shown in blue in the bottom inset box) Tunability of the IRMOF framework One of the principle advantages of MOFs over zeolites ... examined in our study all are solids at room temperature, sorption of guests was examined in solution Loading of guests in MOFs was followed by placing MOFs in ethanolic solutions of guest in ... the case of Cd MOF-1 and Cd MOF-2, they exhibit smaller channels then designed while remaining some degree of porosity Figure 34 Adamentine view of a single fold of framework of Cd MOF-2, which...
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Hints on the use of Pro-Engineer for Sheet Metal Design docx
Ngày tải lên :
14/08/2014, 11:20
... suitable bracket of your own devising, into a drive-unit assembly before inserting this into the overall robot, thus saving having to everything twice and minimising the number of datum features ... references in assemblies and drawings Do a Family Table before inserting the model into either an assembly or a drawing! Evolving the Design Should the structure of the chassis need modifying, during ... darts are cut into the start of the bend, resulting in a high rate of material deformation in this corner Although, for the thin material being used, this is acceptable, the ease of bending will be...
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towards a rational design for sustainable urban drainage systems understanding (bio)geochemical mechanisms for enhanced heavy metal immobilization in filters
Ngày tải lên :
22/12/2014, 17:08
... University of Colorado, USA Submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy Infrastructure and Environment Research Division School of Engineering University of Glasgow ... reasons including: sample collection methods (including assessment and differing definitions of EMC versus first flush) or time of collection, traffic patterns, land use, geology of surrounding land, ... and contaminants makes this type of treatment an ideal choice as a first defence against contaminants in road runoff Thus, media filtration in stormwater treatment is increasingly being used as...
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Design and applications of phosphine ligands to transition metal catalyzed reactions
Ngày tải lên :
09/09/2015, 09:59
... development of new phosphine based chiral ligands derived from amino acids, including phosphine-amide ligands, phosphine-peptide vi ligands phosphine-olefin ligands and phosphine-imine ligands ... imine viii List of Figures Figure 3.1 Figure 4.1 ORTEP structure of dihydroquinazoline 3-23am 31 116 P NMR study on coordination between Rh catalyst and phosphine- 157 olefin ligand ix List of ... 147 Scheme 4.8 Phosphine-olefin ligands derived from amino acids 156 Scheme 4.9 Phosphine-olefin ligand in Pd-catalyzed AAA reaction 157 Scheme 4.10 Phosphine-imine ligands in Pd-catalyzed AAA...
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Theoretical understanding and design of supported metal heterogeneous nanocatalysts
Ngày tải lên :
09/09/2015, 10:15
... Stabilization of metal clusters by strain 61 4.3.3 Tuning the charging state 63 4.3.4 59 4.3.2 4.4 Strain weakening of C-C bonds in graphene Strain engineering ... strain (left panel) and 5% of strain (right panel) Inset: Enlarged view of energy levels of HOMO, HOMO-1, HOMO-2, of Au16 , and the Fermi level (dotted line) of the whole system (b) Isosurface of ... applying strain in the graphene substrate and interestingly, with the adsorption of gold clusters, even the p-type or n-type doping of graphene can be controlled We also investigated the strain...
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DESIGN, SYNTHESIS AND PROPERTIES OF METAL COMPLEXES AND COORDINATION POLYMERS FOR 2+2 PHOTO CYCLOADDITION REACTIONS
Ngày tải lên :
09/09/2015, 11:15
... 11] After combination of all these studies and observations, Desiraju defined crystal engineering in 1989 as “the understanding of intermolecular interactions in the context of designing new solids ... was one of the first who realized alignment of olefin was mainly dependent on the non-covalent interactions of carboxylates and other interactions in the alignment of olefin groups of cinnamic ... University of Singapore, Singapore, 16–19th December, 2012 Joint Conduct of Rietveld Refinement Software Workshop by NTU, A*STAR, ICES and Bruker, School of Materials Science and Engineering, NTU, Singapore...
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Temperature control design project
Ngày tải lên :
20/09/2015, 11:34
... Johan Åström (2002) Control System Design Department of Mechanical and Environmental Engineering, University of California [5] www.microchip.com Microchip Technology Inc [6] www.picvietnam.com [7] ... OPAMP OP07: C2 0.1u VOUT 5VDC C3 470u C4 0.1u LED C1 2200u VIN GND LM7805 D1 6VAC - + 330 -6VAC DIODE BRIDGE LED C6 0.1u C7 470u VIN GND C5 2200u C8 0.1u 330 VOUT -5VDC LM7905 11 SVTH : Hồ Tấn ... ĐIỀU KHIỂN TỰ ĐỘNG Nhà xuất đại học Quốc Gia TP Hồ Chí Minh [2] Nguyễn Văn Nhờ (2005) Điện tử công suất Nhà xuất đại học Quốc Gia TP Hồ Chí Minh [3] Bộ môn Điều khiển Tự động – Khoa Điện Điện Tử,...
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Complete oxidation of methane at low temperature over noble metal based catalysts
Ngày tải lên :
08/10/2015, 22:56
... catalysts: dispersed phase of platinum, TOF = 0.005 s−1 , crystalline phase of platinum; TOF = 0.08 s−1 , small particles of palladium; TOF = 0.02 s−1 , large particles of palladium; TOF = 1.3 s−1 The ... consisting of associating platinum and palladium in bimetallic catalytic systems in order to combine the high activity of Pd catalysts to the high resistance of platinum ones against sulphur poisoning ... the sintering of metal particles The authors concluded that residual chlorine originating from Cl-containing Pt precursor is responsible for a strong inhibition in the complete oxidation of methane,...
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