deterioration of wood and wooden structures

... dị thể n-Si/p-CIS 14 CHƯƠNG CHƯƠNG TRÌNH MÔ PHỎNG MỘTCHIỀU AMPS – 1D (Analysis of Microelectronic and Photonic Structures) Chương trình mô chiều AMPS – 1D chương trình đa để khảo sát ảnh hưởng...

Ngày tải lên: 18/03/2013, 13:40

... Page i Fundamentals of OOP and Data Structures in Java Fundamentals of OOP and Data Structures in Java is a text for an introductory course on classical data structures Part One of the book presents ... handling, and model-view-controller design •Present and illustrate GUI software development with Java: use of AWT, Swing classes, event handling, and modelview-controller •Present a series of ... preoccupied with the manipulation of software objects OOP is a way of thinking about problem solving and a method of software organization and construction The concepts and ideas associated with object-oriented...

Ngày tải lên: 14/02/2014, 04:20

... intersection form is even: then S is a connected sum of copies of P1 × P1 and of a K3 surface if the signature is negative, C C and of copies of P1 × P1 and of a K3 surface with reversed orientation C ... SPACES OF SURFACES AND REAL STRUCTURES 591 and V Kharlamov for a useful conversation, V Kulikov and Sandro Manfredini for pointing out some nonsense, Sandro again for the nice picture, and finally ... with an action of G, and the product action of G on C × C is free if and only if, defining c, c by the properties abc = a b c = 1, and letting Σ be the union of the conjugates of the cyclic subgroups...

Ngày tải lên: 14/02/2014, 16:20

... wood, jacaranda-dabahia, jacaranda-preto, jacaranda-rajado, jacaranda-roxo, jacarandaholz, jacaradanda de Brasil, legno di jacaranda, madeira de palisandro, marnut, palisander, Rio rosewood Monkey ... www.sustainableforestprods.org Wood and paper-based products include solid wood (lumber, building materials and furniture), engineered wood (plywood, oriented strand board and fiberboard) and paper-based products ... international processes have include firewood, roundwood and wood in the rough, taken up this issue Demand for legally-sourced wood and pickets and stakes of wood, railway sleepers, sawmill paper-based...

Ngày tải lên: 22/02/2014, 09:20

... between a set of strings of terms on one hand and a set of trees on the other (by means of a linear sequence of sets of trees) The rule RN! describes a correspondence between a single term and a tree ... a set of correspondence rules, each of which defines a correspondence between a structural representation (or rather a set or family of) and a string of terms (similarly a set or family of) Each ... // A A I tree of 8, and that 8k cannot be expressed in terms of the respective structural representations (if any) of ~j ~Jm" Such a correspondence cannot be I handled by a rule of the form discussed...

Ngày tải lên: 22/02/2014, 10:20

... interagency Ship Structures Committee, and as a member of the Standing Committees of the International Ship and Offshore Structures congress (ISSC) and the conference on Practical Design of Ships and Mobile ... Editor of the Journal of Marine Structures since its inception and an editor of the Journal of Marine Science and Technology In 2000–2003 he served as Chairman of the International Ship and Offshore ... number of peaks and ε is a spectrum broadness parameter STRENGTH OF SHIPS AND OCEAN STRUCTURES 2.6.5 Return Periods of Extreme Events and Encounter Probabilities The concepts of return periods and...

Ngày tải lên: 24/03/2014, 01:20

... multidisciplinary nature of MEMS and nanotechnology, this collection of articles can be used by scientists and researchers in the disciplines of engineering, material sciences, physics and chemistry Mojtaba ... the use of masking and process chemicals, and demonstrates sub-micrometer resolution FIB etching equipments have shown potential for a variety of new applications, in the area of imaging and precision ... of nanoquantum mechanical electron devices and their applications Classification of machining Micromachining is the basic technology for fabrication of micro-components of size in the range of...

Ngày tải lên: 21/06/2014, 02:20

... shifts of several peaks and valleys and fitting of this FTG on the liquid refractive index (a, b, c, d as marked in Fig 2, a and c are 32 Micromachining Techniques for Fabrication of Micro and Nano ... intermediate range within the spectrum of applications for microfabrication techniques The width and depth of most microfluidic channels fall in the range of 10-1000 µm, and this feature size is thus ... rate of 10 kHz and 3.0 W at repetition rate of 20 kHz, and that of the 266 nm laser was 0.5 W at repetition rate of kHz The stage was moved up and down to adjust the z-axis to focus and de-focus...

Ngày tải lên: 21/06/2014, 02:20

... for Fabrication of Micro and Nano Structures Laser micromachining of plastic laminates for microfluidics nearly always involves through-cutting of each layer CO2 laser systems not offer sufficient ... compounds Fundamentals of Laser Ablation of the Materials Used in Microfluiducs 57 In the cases of the ablation rates of sapphire, silicon, and Pyrex, micromachined by near UV and mid-UV nanosecond ... for sapphire, silicon and Pyrex using the 266 nm and 355 nm Nd:YAG lasers extensively applied to the field of microfluidics, principally in the form of through-cutting of plastic laminates A...

Ngày tải lên: 21/06/2014, 02:20

... 14 (c)) Fig 14 SEM images of trenches laser micromachined at different focus offset planes: (a) small offset of 300 μm; (b) optimal offset of 450 μm; (c) large offset of 600 μm The pulse energy, ... Institute of Physics) A number of factors affect the quality of trenches In our study, five laser parameters (focus offset, pulse energy, pulse repetition rate, scan speed and number of scan passes) and ... The expanded and collimated beam was guided by several laser mirrors and focused onto a piece of GaN-on-sapphire sample (emission wavelength = 470 nm, thickness of GaN = μm and thickness of sapphire...

Ngày tải lên: 21/06/2014, 02:20

... the cost and speed of excimer laser could be an issue from the production point of view at this stage of the deployment, other lasers such as UV Nd:YAG and CO2 can offer both prototyping and mass ... the centre of the profile, I is the intensity at any other point, and r is the radius of the beam taken at a point where the beam axis intensity of its maximum Although this Gaussian profile is ... (LBM), state of the art and new opportunities, Journal of Materials Processing Technology, Vol.149, No.1-3, pp 2-17 Offrein, B.J (2008) Optical interconnects and nanophotonics, Proceedings of IEEE/LEOS...

Ngày tải lên: 21/06/2014, 02:20

... Micromachining Techniques for Fabrication of Micro and Nano Structures number of advantages like reduced costs due to handling of smaller amounts of liquid, less storage and disposal costs, no hygienic ... Fabrication of Micro and Nano Structures Starting at a tool diameter of 100 µm, aspect ratios of up to ten are available now, as displayed in Fig [Nst-Em, Hte_Ep2] Further miniaturization of micro ... Fabrication of Micro and Nano Structures the chips formed, 18% migrate to the tool and 7% to the work piece [Kön90] Hence, the work piece and its microstructure are not as affected as in the case of grinding...

Ngày tải lên: 21/06/2014, 02:20

... made by Hitachi with lengths of 1, and mm and a diameter of 0.4 mm For the first two tools, 36.000 rpm and a feed rate of 1800 mm/min were applied The infeeds were 0.03 and 0.021 mm, respectively ... miniaturization of tools seems not to be promising in terms of stability and cost efficiency Instead, attention should be paid to improvement of reliability of the cutting process and the adaption of machining ... temperature and concentration of the reactive In particular, the study presented here was made with a concentration of 10% of TMAH and 90% of deionized water at 80°C, from which an etch rate of approximately...

Ngày tải lên: 21/06/2014, 02:20

... definition of meso- and micro-scale for features between 100 μm and 250 µm and less than and equal to 100 μm, respectively Supported by OMAX’s R&D funds and NSF SBIR Grants #0944229 (Phase I) and #1058278 ... with a closeup of a nozzle and representative AWJ-cut parts made of various materials The advantages and disadvantages of AWJs in comparison with lasers, EDM, plasma, flame cutting, and milling ... understanding the physics of the supersonic/subsonic three-phase microfluidics of the abrasive slurry moving through smalldiameter mixing tubes and on issues related to the flow characteristics of...

Ngày tải lên: 21/06/2014, 02:20

... the precision and quality of cuts The flexibility of PC programming incorporates the versatility of waterjet technology very well, and the integration of modern PC-based software and hardware ... compares the stream diameters of various types of waterjets with the beam diameters of lasers The solid and dotted portions of the lines signify the normal and outside ranges of stream/beam diameters, ... Fabrication of Micro and Nano Structures Fig 12 Comparison of stream/beam diameters of waterjets and lasers (modified from Miller, 2005) Abrasive-waterjets remain the mainstream of waterjet technology...

Ngày tải lên: 21/06/2014, 02:20

... Micromachining Techniques for Fabrication of Micro and Nano Structures Results and discussions Measurements of on line average current, and post measurements of width and depth of microchannels are presented ... micromachining of glass ECSMM is a strong candidate for microfabrication utilizing the best of electrochemical machining (ECM) and electro discharge machining (EDM) together Applications of ECS for microfabrication ... boiling of hydrogen bubble that leads to development and formation of isolation vapor chamber of H2 gas The heat transfer controlled growth model applies and the radius of the bubble as a function of...

Ngày tải lên: 21/06/2014, 02:20

... Fabrication of Micro and Nano Structures Wuthrich, R., Fascio, V., Viquerat, D and Langen, H (1999) ‘In situ measurement and micromachining of glass’, Int Symposium on Micromechatronic and Human ... (microchannels and microholes) of metals and non-metals, Int J Manufacturing Technology and Management, vol 22, no 2, 107-123 Kulkarni A V., Jain V K., and Misra K A., (2010c) Development of a Novel ... Dixit, P.M and Pandey, P.M (1999) On the analysis of electro chemical spark machining process’, Int J of Machine Tools and Manufacture, Vol 39, pp.165–186 Kulkarni, A V., Jain, V.K and Misra,...

Ngày tải lên: 21/06/2014, 02:20

... Electromechanical Modeling and Simulation of RF MEMS Switches Proceedings of the 4th International Symposium on MEMS and 300 Micromachining Techniques for Fabrication of Micro and Nano Structures Nanotechnology, ... and efficiency compared to more mature finite element technique and more work is needed in development of software tools based on these techniques and specifically targeted to MEMS modeling and ... Modeling and Simulation of MEMS Components: Challenges and Possible Solutions 295 very well with the experimentally obtained result of Fig 6,7, and clearly illustrates the elliptic form of surface...

Ngày tải lên: 21/06/2014, 02:20

... shifts of several peaks and valleys and fitting of this FTG on the liquid refractive index (a, b, c, d as marked in Fig 2, a and c are 32 Micromachining Techniques for Fabrication of Micro and Nano ... intermediate range within the spectrum of applications for microfabrication techniques The width and depth of most microfluidic channels fall in the range of 10-1000 µm, and this feature size is thus ... of nanoquantum mechanical electron devices and their applications Classification of machining Micromachining is the basic technology for fabrication of micro-components of size in the range of...

Ngày tải lên: 27/06/2014, 01:20

... Ocean, Arabian Sea, and offshore q 2007 by Taylor & Francis Group, LLC Construction of Marine and Offshore Structures 32 Australia; as hurricanes in the Atlantic and South Pacific; and as typhoons ... Because of lack of moisture, these storms are usually cloudless but full of sand and dust Similar storms reportedly occur off the west coast of North Africa Milder but prevalent types of winds ... kilometers offshore This is especially noticeable off the west coast of North Africa and in the Bay of Biscay and on the northwest shelf of Australia Within partially enclosed bays and estuaries,...

Ngày tải lên: 09/07/2014, 17:20