Báo cáo toán học: "Hyperbolization of Euclidean Ornaments" pptx
Báo cáo toán học: "Hyperbolization of Euclidean Ornaments" pptx
... using a sufficiently fine mesh of Euclidean triangles. 3. Designate target angles for the centers of rotation according to the order of these rotations in the original Euclidean symmetry group. 4. ... interrelations of mathematics, geometry and art. The conference resulted in a friendship and an exchange of letters. One of these letters of Coxeter to Escher contained a renderin...
Ngày tải lên: 08/08/2014, 01:20
Báo cáo toán học: "Compositions of Graphs Revisited" pptx
... V (G). A composition of G is a partition of V (G) into vertex sets of connected induced subgraphs of G. Thus a composition provides a set of connected induced subgraphs of G, {G 1 , G 2 , · · ... composition of a graph G is a partition of the vertex set of G into vertex sets of connected induced subgraphs of G. Knopfmacher and Mays [2] found an explicit formula for C(K m...
Ngày tải lên: 07/08/2014, 13:21
Báo cáo toán học: " Measurement of beta amyloid peptides in specific cells using a photo thin-film transistor" pot
... definition of the quantum yield as follows: # of emitted photons # of absorbed photons Φ ≡ , (3) the number of emitted photons indicates the multiplication of the quantum yield and the number of ... morphologies of HeLa cells cultured on a flat PDMS surface. Quantification of Aβ peptides via detection of FITC We investigated the applicability of our p-FET sensor t...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Synthesis of highly transparent ultrananocrystalline diamond films from a lowpressure, low-temperature focused microwave plasma jet" ppt
... crlin@ntut.edu.tw 1 Department of Mechanical Engineering and Institute of Manufacturing Technology, National Taipei University of Technology, Taipei, 106, Taiwan Full list of author information is available at the end of ... beamline of the National Synchrotron Radiation Research Center (NSRRC). This work was financially supported by the main research projects of the National Sc...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Structure of reverse microemulsion-templated metal hexacyanoferrate nanoparticles" ppt
... method of the synthesis of metal hexacyanoferrate nanoparticles. Keywords: reverse micelles; template method; nanoparticles; nickel hexacyanoferrate. - 9 - the nanostructure of the ... Possible mechanism for the synthesis of Nihcf nanoparticles: (a) dissolution of all the ionic species, (b) formation reaction of nuclei of Nihcf, and (c, d) growth of nanoparticles...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Enhancement of the photoelectric performance of dye-sensitized solar cells by using Ag-doped TiO2 nanofiber in TiO2 nanoparticle film as an electrode" pot
... synthesis of the wide bandgap of TiO 2 , the small particle size of 10 to approximately 20 nm, the wide surface area of TiO 2 , and the porosity. As stated above, these can increase the adsorption of ... nanofibers can be observed at the surface of the film, so the nanofiber-added TiO 2 film has an advantage to having higher adsorption of dye molecules and also supports the...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Characterization of epitaxial GaAs MOS capacitors using atomic layer-deposited TiO2/Al2O3 gate stack: study of Ge auto-doping and p-type Zn doping" doc
... diffusion for GaAs/Ge epitaxy. Figure 3. ToF-SIMS depth profile of elements Ti, Al, AlO, TiO, O, Ga, and As. These are the depth profile of the elements of the ALD TiO 2 /Al 2 O 3 dielectric stack ... It is apparent from the ToF-SIMS elemental depth profiles (Figure 3) where a significant amount of interdiffusion of TiO, AlO, O, Ga, and As was noticed. As a result of such i...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Growth of few-wall carbon nanotubes with narrow diameter distribution over Fe-Mo-MgO catalyst by methane/acetylene catalytic decomposition" pptx
... The scheme of the catalyst preparation. Figure 2. TEM image of as-prepared CNTs. The inset shows the histogram of the diameter distribution of CNTs. Figure 3. XRD spectrum of CNTs. Figure ... number of works discussing the transition metals: molybdenum ratio and role of molybdenum in the efficient growth of CNTs with uniform diameter distribution [13-16]. A high am...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Protection of primary users in dynamically varying radio environment: practical solutions and challenges" pot
... (NC-OFDM) [1, 2], which is based on the popular orthogonal frequency division multiplexing (OFDM) transmission technique. One of the primary advantages of using NC-OFDM within the context of a ... essential that the spectral shape of the NC-OFDM waveform is treated such that the out -of- band (OOB) radiation is minimized. In addition to the issue of OOB interference, OFDM-based wave...
Ngày tải lên: 20/06/2014, 20:20
Báo cáo toán học: " Existence of positive solutions to discrete secondorder boundary value problems with indefinite weight" pptx
... isacharacteristicvalueofT if there exists v Î E, v ≠ 0, such that v = μTv,i.e.,μ -1 is a nonz ero eigenvalue of T. Let r(T) denote the set of real characte ristic values of T and Γ denote the closure of the set of ... structure of the set o f positive solutions of (1.1), (1.2), and obtain the existence of positive solutions of (1.1) and (1.2). More- over, we can also obtain...
Ngày tải lên: 20/06/2014, 20:20