... would like to thank both my thesis advisors for their time and dedication to review, comment, modify and proofread numerous drafts of this thesis and all my previous papers manuscripts It is a great ... Focus of Thesis In this thesis, a detailed study of reversal mechanism and dynamic behavior of ferromagnetic nanostructures will be presented The main body of the thesis is divided into four parts ... comprises of several energy terms, as follow: 𝐸 𝑡𝑜𝑡 = 𝐸 𝑒𝑥𝑐ℎ + 𝐸 𝑚𝑠 + 𝐸 𝑎𝑛𝑖 + 𝐸 𝑍𝑒𝑒 (2-1) where Eexch is the exchange energy, Ems is the magnetostatic energy, Eani is anisotropy energy and EZee is...
Ngày tải lên: 09/09/2015, 11:20
... reflector suppressing rear optical losses To improve the rear optical losses, a novel device architecture, using a conductive distributed Bragg reflector (DBR) is proposed in this thesis, to be ... reduced photo-generation is expected with thinner substrates, especially for near-infrared (~1000 nm) photons due to their much higher absorption depth To address this issue, methods to increase ... this aspect, doped silicon films deposited in the transition region of amorphous to microcrystalline silicon are potential candidates to meet this need, and are investigated in this thesis To...
Ngày tải lên: 09/09/2015, 11:15
Development and fabrication of thin film composite (TFC) membranes for engineered osmosis processes
... increase ΔP to beyond Δπ, it is possible to reverse the process in a way that the water molecules are forced to diffuse through the semi-permeable membrane into solution A This is reverse osmosis (RO) ... like to express my deepest gratitude and appreciation to my supervisor Prof Chung Tai-Shung (Neal) who offered me an opportunity into this fascinating area of membrane research His consistent ... Energy is consumed to overcome the Δπ across the membrane in order to extract fresh water in RO Pressure retarded osmosis (PRO) is an osmosis process between FO and RO, where the applied ΔP onto...
Ngày tải lên: 10/09/2015, 09:02
High depth resolution rutherford backscattering spectrometry with a magnet spectrometer implementation and application to thin film analysis 2
... 173 (Fig 3.3) is used within the Singletron as a heavy duty profile source for proton, alpha and oxygen beams The neutral gas is released into the ion source, where an RF voltage is applied Electrons ... suppression The accelerator tank is filled with a heavy non-toxic insulating gas SF6 at a pressure of bar SF6 has a dielectric strength approximately 2.5 to times that of air, and serves to prevent corona ... and the right of the stabilizer slit are monitored, and the slit assembly is connected via a feedback loop to the voltage regulator in the accelerator high voltage power supply Any instability...
Ngày tải lên: 14/09/2015, 08:44
High depth resolution rutherford backscattering spectrometry with a magnet spectrometer implementation and application to thin film analysis 3
... insertion sequence is activated, where V3 is first opened to allow the load lock to be pumped to a pressure of ~ 10−2 mbar before opening V1 to allow the user to transfer the sample into the main chamber ... divergence of the ion beam is defined using the motorized slits located ~ m before the main chamber The scattering target is suspended by a precision 5-axis goniometer and is applied with an electrical ... V4 is then opened to allow N2 to flood the load lock back to atmospheric pressure, after which the load lock chamber can be opened to remove the sample 3.4.2 Goniometer A Kitano Seiki 5-axis...
Ngày tải lên: 14/09/2015, 08:44
High depth resolution rutherford backscattering spectrometry with a magnet spectrometer implementation and application to thin film analysis 4
... Pxt , Pyt ) Top trajectory Top envelope P0 ( Px, Py ) Central trajectory Pb ( Pxb , Pyb ) Bottom envelope Bottom trajectory Fig 4.8 Schematic of translations of central trajectory due to slanted ... scale factor is obtained It is necessary to calculate the scale factor over a number of channels so as to minimize the statistical variation in the counts, but n must be kept small so as to ensure ... the top and bottom envelopes with the entrance edge Trajectories within magnet Circles are drawn within the magnet as trajectories for the top and bottom envelopes so that each envelope is a...
Ngày tải lên: 14/09/2015, 08:44
High depth resolution rutherford backscattering spectrometry with a magnet spectrometer implementation and application to thin film analysis 1
... energy-loss discussions is the Stopping cross-section: S≡ dE N dx where N is the atomic density, and dE / dx (stopping power) is the energy loss per unit ion path length x within the target The stopping ... now put together to form a basic theoretical framework of RBS Our discussions here are limited to RBS analysis of thin films deposited on thick substrates, which is the focus of this thesis, the ... has been developed as part of this thesis to correct for this gain variation along the length of the MCP The rapid down-scaling of Metal-Oxide Field Emission Transistors (MOSFETs) have caused the...
Ngày tải lên: 14/09/2015, 08:44
Static and Dynamic Analysis of Space frames
... – bug is fixed Ultimate limit-state is documented Tendon position is activated Server Hardlock logout is implemented (>8.25.08) Hardlock existence check ... belonged to, ( PlElTnd) has been added to the group List/Plot in menu Construction schedule/Action © TDV – Technische Datenverarbeitung Ges.m.b.H Heinz Pircher und Partner RM2000 RM2000 Release history ... “Envelope“ to print out the result list for certain elements respectively nodes (button ‘Print’) Module Tint – Results in List file and Plot file are unit consistent Module UltChk – Results in List...
Ngày tải lên: 06/09/2012, 15:18
Static and Dynamic Analysis of Spaceframes
... “Spring between nodes” The connection to the node at the top of the pier is automatically assigned if the correct segment point is chosen – Part Point in this example (see above) RH Window – Segment ... this example) Repeat the above procedure for all the support positions N.B Do not change Alpha to 90 degrees – the program does this automatically! Select RM to export the structural geometry to ... node 11 due to the sum of L.C (15kN/m) plus this settlement loading case is exactly 500kNm The Solution: Apply a ‘Unit Settlement Loading of 0.001m (L.C 2)’ and use KASP to factor this unit settlement...
Ngày tải lên: 06/09/2012, 15:55
Static and Dynamic Analysis of Spaceframes
... factors for the result presentation to get more readable numbers in the tables The multiplication factor used is displayed in the table header to avoid confusion A typical example is the displacements ... the factor relating this new unit to the appropriate default unit These arbitrary user-defined units can be applied to the length and force units A concise list of the active units is also displayed ... the bottom side is defined to be positive, and a moment causing tension on the top side is negative b) the sign definition of the torsion moment Due to the used left-hand system a fully consistent...
Ngày tải lên: 06/09/2012, 15:55
SAP2000® Linear and Nonlinear Static and Dynamic Analysis and Design of Three-Dimensional Structures
... an Auto Select Section List An auto select section list is simply a list of sections, which for this tutorial will be a set of double angles (2L4X4’s) Auto select section lists are assigned to ... model button, to Step Run the Analysis In this Step, the analysis will be run A Click the Analyze menu > Run Analysis command or the Run Analysis button, to bring up the Set Analysis Cases to Run ... analysis is finished, the message “ANALYSIS COMPLETE” will display Click OK to close the analysis window The program automatically displays a deformed shape view of the model, and the model is locked...
Ngày tải lên: 06/09/2012, 15:56
MOB Subject 5 –Access methods Static and dynamic access techniques
Ngày tải lên: 17/09/2012, 09:13
Báo cáo y học: "Comparison between single antiplatelet therapy and combination of antiplatelet and anticoagulation therapy for secondary prevention in ischemic stroke patients with antiphospholipid syndrome"
... therapy is reasonable for cases of cryptogenic ischemic stroke or TIA with positive aPL On the other hand, oral anticoagulation with a target INR of to [4] is reasonable for patients with ischemic ... disturbed in patients with APS [17] Since protein C is closely associated with factor VIII and factor V, this result suggests that the coagulation system is impaired in patients with APS, and so anticoagulant ... uncomplicated stroke, and this is also the reason why the number of patients in this study was quite small Nevertheless our results seem promising, and a larger study with more patients would be warranted...
Ngày tải lên: 26/10/2012, 09:48
CFD model of air movement in ventilated façade: comparison between natural and forced air flow
... building This first layer defines the visual appearance of the building The next layer is an opened air gap with a minimum of cm The role of this layer is to prevent heat getting into the building ... in a large factory building A numerical verification is made to check that the model is correct as well CFD allows designers to obtain comparative results to take better design decisions of different ... This effect is due to convection produced in the air gap of the façade, Kokogiannakis and Strachan [5]; Gang, [6] This convection depends on the air movement inside the gap and the heat transmission...
Ngày tải lên: 05/09/2013, 14:58
Tài liệu General Comparison between AISC LRFD and ASD doc
... AISC ASD and LRFD • AISC = American Institute of Steel Construction • ASD = Allowable Stress Design AISC Ninth Edition • LRFD = Load and Resistance Factor Design AISC Third Edition AISC Steel ... • • • • 1963 AISC ASD 6th Edition 1969 AISC ASD 7th Edition 1978 AISC ASD 8th Edition 1989 AISC ASD 9th Edition • 1986 AISC LRFD 1st Edition • 1993 AISC LRFD 2nd Edition • 1999 AISC LRFD 3rd Edition ... compared to the AISC allowable stress values • LRFD = actual forces and moments are compared to the AISC limiting forces and moments capacity ASTM Steel Grade • Comparison is between Table of the AISC...
Ngày tải lên: 12/12/2013, 20:15
Ways of greeting and a comparison between vietnamese and english greetings
... turns to the other and says my goodness it is so hot In this case, it is difficult to suppose that the primary intention of the speaker is to convey information It seems more reasonable to suggest ... comparison between Vietnamese and English greeting can help teacher this Some suggested samples of exercises for learners of English to practise greeting When being introduced to a man who is at ... called language to communicate Language is considered to be the greatest achievement of humanity It is the system of special signals which people use to communicate and it is the basis means of communication...
Ngày tải lên: 24/12/2013, 09:36
02 three dimensional static and dynamic analysis of structure
... It is important to note that if a stress is continuous, the corresponding strain, derivative of the displacement, is EQUILIBRIUM AND COMPATIBILITY 2-7 discontinuous Also, if a stress is discontinuous, ... joint displacement ui is to be calculated, only one external virtual load exists, Ri = For this case, the equation is the same as the unit load method It is apparent for nonlinear analysis that ... analysis exist that not satisfy the displacement compatibility equations For example, for rectangular frames, both the cantilever and portal methods of analysis assume the inflection points to exist...
Ngày tải lên: 12/01/2014, 21:45
Tài liệu Cân bằng tĩnh và cân bằng động và ( Static and Dynamic Balancing) pptx
... dạng rotor Có thể hình dung rotor dược gắn thêm hai khối lượng dôi dư hai mặt phẳng xử lý cân trọng tâm rotor không nằm trục quay - Rotor trục cứng, rotor trục mềm ? -Rotor trục cứng rotor không ... quay tốc độ cố định đo, tính to n - Cân động cân từ mặt phẳng quay trở lên Về lý thuyết tính to n dùng ma trận hệ số ảnh hưởng - Mất cân rotor ? - Là tượng rung động rotor lực ly tâm quay, nguyên ... quay không vận hành tần số cộng hưởng chúng Rotor trục mềm rotor có biến dạng thay đổi tốc độ quay Hay rotor vận hành gần tần số cộng hưởng chúng Với rotor này, cân động cần phải quay chúng tốc độ...
Ngày tải lên: 21/01/2014, 13:20
Tài liệu Static and Dynamic Analysis of the Internet’s Susceptibility to Faults and Attacks docx
... it is growing? Will performance and robustness of the Internet improve in the future? To answer these questions, we analyze historical Internet topologies We call this Dynamic Analysis In this ... Internet topology Currently, the best method to simulate network protocols is using the real Internet topology instead of using Internet topology generators, which innately limits our ability to develop, ... in their ability to predict future Internet topologies A direction for future work is the design of Internet topology generators, that generate more realistic Internet-like topologies and give...
Ngày tải lên: 18/02/2014, 01:20
Báo cáo khoa học: "Comparison between CFG filtering techniques for LTAG and HPSG" pot
... rule-app is 100%,5 whereas that of ok-prop is quite low.6 These results indicate that CFGTNT is superior to CFGPB with respect to the degree of the CF approximation We can explain the reason for this ... constraints in a given grammar is essential to obtain an effective filter We are going to integrate the advantage of the CF approximation of HPSG into that of LTAG in order to establish another CFG filtering ... extracted from the Penn Treebank into HPSG-style Experimental results showed that the existing CF approximation of HPSG (Torisawa et al., 2000) produced a more effective filter than that of LTAG...
Ngày tải lên: 08/03/2014, 04:22