find or revise the center of gravity of a vessel
pressure vessel design manual
Ngày tải lên :
02/04/2014, 16:47
... where these forces are applied Loadings may be applied over a large portion (general area) of the vessel or over a local area of the vessel Remember both general and local loads can produce membrane ... is the maximum pressure allowable in the “hot and corroded’ condtion It is the least of the values calculated for the MAWP of any of the essential parts of the vessel, and adjusted for any difference ... also be keenly aware of the types of loads and how they relate to the vessel as a whole Are the Stress analysis is the determination of the relationship between external forces applied to a vessel...
- 518
- 2.3K
- 1
Linear Minimum Mean-Square-Error Transceiver Design for Amplify-and-Forward Multiple Antenna Relaying Systems
Ngày tải lên :
20/11/2012, 11:31
... that the matrix Rx is the autocorrelation matrix of the receive signal x at the relay Subject to the transmit power constraint at the relay, the joint design of equalizer at the destination and ... estimation error variance Similarly, RT,rd , RR,rd and σe,rd are defined for the channel between the relay and the destination On the other hand, when the channels are estimated based on the algorithm ... closed-form solution involves a minor relaxation for the general case, when the column covariance matrix or the row coveriance of the channel estimation error at the second hop is proportional to the...
- 130
- 407
- 0
hybrid metal oxide and multiwall carbon nanotube films for low temperature gas sensing
Ngày tải lên :
19/03/2014, 16:48
... sensor baseline resistance in air: Rair − Rgas (1) S= Rair where Rair is the sensor resistance in air and Rgas is the sensor resistance in the presence of the pollutant after reaching a steady ... layers (and associated potential barriers) co-exist [10,11] The first type of depletion layers is located at the surface of the grains of the metal oxide film and the second type at the interface ... 137–142 One important aspect of operating the sensors at 150 ◦ C was their faster recovery of the baseline after gas exposure For instance, the recovery time of SnO2 /MWCNTsbased sensors was reduced...
- 6
- 589
- 0
Metal Foams: A Design Guide pptx
Ngày tải lên :
28/03/2014, 16:20
... Commercial surface displacement analysis equipment and software (SDA) are available from Instron (1997) The SDA software performs an image correlation analysis by comparing pairs of digital images captured ... Library of Congress Cataloguing-in-Publication Data A catalogue record for this book is available from the Library of Congress British Library Cataloguing-in-Publication Data A catalogue record ... components of strain in the plane of the surface (Figure 3.9) Maps of the incremental distortion at loadings between the start of the non-linear response and the onset of the plateau reveal that localized...
- 263
- 630
- 0
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
... displaced laterally at the start of the procedure to inspect the patellofemoral joint and the lateral compartment, to evaluate the patella for the presence of osteophytes, and to confirm that the ... with measurement of femoral and tibial angles, alpha and beta angles, and medial and lateral joint spaces as described by Villers and Cartier [7] Patients were additionally evaluated for the presence ... low-up the same patient (A) and Merchant view at radiographs of Antero-posterioras Figures and 2, taken(B) 41 month folAntero-posterior (A) and Merchant view (B) radiographs of the same patient as...
- 7
- 272
- 0
Metal Foams: A Design Guide docx
Ngày tải lên :
27/06/2014, 17:20
... Commercial surface displacement analysis equipment and software (SDA) are available from Instron (1997) The SDA software performs an image correlation analysis by comparing pairs of digital images captured ... Library of Congress Cataloguing-in-Publication Data A catalogue record for this book is available from the Library of Congress British Library Cataloguing-in-Publication Data A catalogue record ... components of strain in the plane of the surface (Figure 3.9) Maps of the incremental distortion at loadings between the start of the non-linear response and the onset of the plateau reveal that localized...
- 263
- 476
- 0
METAL FORMING – PROCESS, TOOLS, DESIGN pps
Ngày tải lên :
29/06/2014, 13:20
... Identification of the Material’s Characteristics and Reliability Analysis A El Hami, B Radi and A Cherouat Additional information is available at the end of the chapter http://dx.doi.org/10.5772/48074 ... modified to avoid the damage appearance In principle, all materials and alloys used for deep drawing or stamping can be used for hydroforming applications as well 2.1 Mechanical characteristic of welded ... reality the reliability of the hydroforming process In this work, the limit state functions take advantage from the FLSD and the FLD of the material to assess the risk or the probability of failure...
- 218
- 364
- 0
Design, synthesis and applications of Metal Organic Frameworks
Ngày tải lên :
02/07/2014, 12:59
... architecture of MOFs The vast majority of reported MOFs feature frameworks containing transition metal ions that contain ligands bound via linear, tetrahedral, square planar, or octahedral coordination ... can be tailored to accommodate a range of reactive groups that can actively or passively participate in catalysis.35 For example, Hasegawa et al created a 3-D porous coordination polymer that ... Abstract Porous materials have been a focus of researchers for their applications as molecular storage, molecular sensing, catalysis, asymmetric synthesis and host materials Metalorganic frameworks...
- 80
- 677
- 0
Hints on the use of Pro-Engineer for Sheet Metal Design docx
Ngày tải lên :
14/08/2014, 11:20
... the minimum amount of material if done manually Add an Unbend feature as above and examine the flattened corner detail as example below A sheet metal cut can be inserted into the flattened material ... placed correctly on the flat pattern.As in the example below this is also true of cuts sketched on a plane at 90 degrees to the plane of the flat pattern Note that the flat pattern will always ... Standard Brackets and other materials In addition to the chassis, there will, probably, be a requirement for auxiliary brackets formed from sheet metal To save time, a small library of standard brackets...
- 26
- 301
- 0
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
... areas of grass or vegetation that treat runoff from adjacent impermeable surfaces • Swales – channels of grass or vegetation that allow for storage and conveyance of water and infiltration into the ... treatment of surface water runoff which can contain a variety of pollutants such as heavy metals, polycyclic aromatic hydrocarbons (PAH’s), and organic or inorganic particulates (Seelsaen et al ... support and friendly chats throughout, Peter Chung for SEM analysis and Abdulrahman Al Harthi for surface area analysis I am extremely appreciative of the Lord Kelvin Adam Smith Scholarship for...
- 232
- 230
- 0
Design and applications of phosphine ligands to transition metal catalyzed reactions
Ngày tải lên :
09/09/2015, 09:59
... carbamate Table 4.3 Phosphine ligands in Pd-catalyzed AAA reaction of -fluoro-ketoester with allylic carbamate Table 4.4 113 Phosphine ligands in Pd-catalyzed AAA reaction of malonate with allylic ... presence of a tetra-chloropalladate(II) catalyst was invented (Scheme 1.1).1 It was one of the most important milestones in the history of organopalladium chemistry and also the starting point of modern ... other labmates for their help during my PhD studies I also want to thank NUS for the research scholarship and financial support Thanks also go to all the staff in NMR, Mass, and X-Ray labs for...
- 193
- 215
- 0
Theoretical understanding and design of supported metal heterogeneous nanocatalysts
Ngày tải lên :
09/09/2015, 10:15
... materials Metal-organic framework (MOFs) have emerged as a particular class of multifunctional materials because of their high specific surface area, porosity and chemical tunability, which has lead ... only around wt% of the Chapter Introduction catalytic materials For practical use, they are applied in a finely dispersed form as particles on a support (carrier), and the majority of the reactions ... process, the rate of a chemical reaction is increased by a catalyst without the consumption of the catalyst itself, as was stated by Berzelius over 150 years ago The exploration of catalysis has been...
- 164
- 527
- 0
DESIGN, SYNTHESIS AND PROPERTIES OF METAL COMPLEXES AND COORDINATION POLYMERS FOR 2+2 PHOTO CYCLOADDITION REACTIONS
Ngày tải lên :
09/09/2015, 11:15
... thank to all our collaborators, especially Prof P Naumov, Dr M S Lah and Prof S S Lee, from Abu Dhabi, UAE and S Korea Words are not enough to thank my parents for their unconditional love, care ... versatile coordination geometry such as linear, T-shaped, tetrahedral, square planar, square pyramidal or octahedral.[1 6a] In addition, by controlling the geometry and multidentate nature of organic ... during the reaction The parallel alignment of olefin bonds would ensure that the pz-orbitals of each olefin are collinear and that there is a sufficient degree of overlap for the reaction The distance...
- 271
- 611
- 0
Temperature control design project
Ngày tải lên :
20/09/2015, 11:34
... Q4 DOT 10 1k A1 015 1k PORTD 4.7k Q3 VCC4 A1 015 PORTD 12 1k Q2 10MHz CRY STAL 14 12 31 MCLR*/VPP RA0/AN0 RA1/AN1 RA2/AN2/VREF-/CVREF RA3/AN3/VREF+ RA4/T0CKI/C1OUT RA5/AN4/SS*/C2OUT RC0/T1OSO/T1CKI ... R2 330 – Khi PORTC = 0, lớp BE Transistor không phân cực, dòng qua MOC3020, triac không kích – Khi PORTC = 1, Transistor dẫn, ta thiết kế cho dòng qua OPTO MOC3020 từ – 20mA, mà : 10 SVTH ... Design Department of Mechanical and Environmental Engineering, University of California [5] www.microchip.com Microchip Technology Inc [6] www.picvietnam.com [7] www.dientuvietnam.net 30 SVTH :...
- 31
- 188
- 0
Complete oxidation of methane at low temperature over noble metal based catalysts
Ngày tải lên :
08/10/2015, 22:56
... contact The main advantage of the preparation over other conventional methods is the very high level of purity of the catalyst Based on the catalyst mass and Pd surface area, this catalyst was claimed ... influence of numerous parameters such as the Pd content, the addition of La or Zr, ageing under reactants at 600 ◦ C, the Na or H form of the zeolite, the steam ageing of the catalyst, the addition of ... React Kinet Catal Lett 70 (2000) 97 [96] Y Yazawa, H Yoshida, N Takagi, S Komai, A Satsuma, T Hattori, J Catal 187 (1999) 15 [97] T Sugaya, A Ishikawa, S Komai, A Satsuma, T Hattori, Y Murakami,...
- 37
- 433
- 0