effect of polymer size and ionic strength on the fluid solid phase separation
Properties of the hole injection layer in organic semiconducting devices
... primarily of a backbone of alternating carbon–carbon single bonds and carbon–carbon double bonds of which the π electrons from the pz orbitals are delocalized over the backbone.16 The presence of π-conjugation ... states of the materials being analyzed Probabilities of electron interaction with matter exceed those of the photons, so while the path length of the photons is of the order of µm while that of the ... the polaron bands in the subgap region The analysis of the doping of PEDT:PSSH does not depend on the distinction between polarons and bipolarons Figure 1.3 shows a combined plot of the normalized...
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Báo cáo khoa học: Light-induced reactions of Escherichia coli DNA photolyase monitored by Fourier transform infrared spectroscopy pot
... fluorouracil dimer and the strong vibration band at 1715 cm)1 to the C(4)¼O(4) carbonyl-stretch vibration of fluorouracil monomer The examination of fluorouracil-containing substrate therefore provides ... carried out with the respective mismatch primer and with one of the flanking primers The second flanking primer was then added and the reaction was continued for 10 additional cycles The PCR fragment ... electrostatic interaction of backbone phosphate and basic residues of the DNA photolyase significantly contribute to the DNA binding of the enzyme [41–44] Therefore, an additional difference band at 1244...
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báo cáo hóa học:" Fourier-transform infrared anisotropy in cross and parallel sections of tendon and articular cartilage" pptx
... consequently, the regular and parallel sections of tendon have the fibrils running parallel in the plane of the sections The cross sections of the tendon, however, only contain the 'ends' of the fibrils ... superficial zone have the fibril in the plane of the sections, the parallel sections from the radial zone have the long axis of the fibrils perpendicular to the plane of the sections (cf Figure ... illustration of the amide bonds at The orientationsurfaces (b) The orientation of the different tissue sections from a specimen block (a) and the schematic illustration of the amide bonds at different...
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báo cáo hóa học:" Analysis of ovarian tumor pathology by Fourier Transform Infrared Spectroscopy" pdf
... stretching vibrations of the amide group of the protein backbone These are primarily characterized by the alpha helix secondary structure of proteins [38] The absorption bands at 1536, 1543 and 1554 cm ... hormones which are proteins Protein content of a cell can be considered a diagnostic tool to determine the physiological phase of a cell [42] The depletion of protein profile in the spectrum of ... coordination of the study and helped to design the manuscript RD and NG provided the samples, helped in biological corroboration of spectral data and revision of manuscript All authors read and approved...
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Fourier transformed infrared absorption spectroscopy and kinetics studies of gas phase small molecules
... (FTIR) absorption spectroscopy is then used for the detection and monitoring of the vibrational bands of both reactants and products 1.2 Reactions of O(3P) atoms with CS2 Reactions of oxygen atoms ... limiting their accumulation, which would lead to disruption of biogeochemical cycles and detrimental effects on the environment The initial attack of OH on the VOCs usually leads to the formation of ... populations and rates determined for the two mixtures in which one of them contained C2H2 as reference The measured ratio of the production rate of CO(υ) from the O(3P) with CS2 versus the production...
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Real-Time Digital Signal Processing - Chapter 7: Fast Fourier Transform and Its Applications
... identical to the DFT with the exception of the normalizing factor 1/N and the sign of the exponent of the twiddle factors The IDFT shows that there is no loss of information by transforming the spectrum ... transform, the Laplace transform, and the z-transform of the linear convolution of two time functions are simply the products of the transforms of the individual functions A similar result holds for the ... Because of the symmetry of the magnitude spectrum and the anti-symmetry of the phase spectrum, only the first M outputs represent unique information from the input signal If the input to the DFT...
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Tài liệu Báo cáo Y học: Electrochemical, FT-IR and UV/VIS spectroscopic properties of the caa3 oxidase from T. thermophilus docx
... spectra, contributions from the reorganization of the polypeptide backbone upon electron transfer to and from the cofactors can be expected, and a partial attribution of the signals observed in the ... with contributions from the formyl groups and from the geranyl side chain expected from heme a and a3 In addition to the signals of the hemes, the reorganization of the polypeptide backbone and ... seen in the spectra shown for the caa3-oxidase In addition the contributions of the heme propionates of the heme c can be expected in a comparable spectral region CONCLUSIONS The superfamily of heme...
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Báo cáo khoa học: Determination of thioxylo-oligosaccharide binding to family 11 xylanases using electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and X-ray crystallography pot
... residues and gather information on the reaction mechanisms, such as the itinerary of the sugar ring conformations along the catalytic pathway [24,25,29,30] or the inversion of the roles of the catalytic ... shows the binding isotherm, i.e r as a function of the free ligand concentration and the t to Eqn (3) (solid line), obtained in the case of TRX I and S-Xyl5-Me On the basis of the Ka obtained, one ... the concentration of the proteinligand complex, and [P] and [L] are the concentrations of the free protein and free ligand (i.e inhibitor), respectively [68] Expressed in terms of r, dened as the...
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Báo cáo khoa học: Structural study of the catalytic domain of PKCf using infrared spectroscopy and two-dimensional infrared correlation spectroscopy pot
... fluctuations Depending on the signal of a given cross-peak in the asynchronous map and on the corresponding region of the synchronous map, the order of changes in the correlated wavenumbers, m1 and ... within the range of errors inherent to the method The solution given by application of the computer programs to the decomposition of amide I band may not be the only one Because some restrictions ... showed an important effect of MgATP on the secondary structure and on the thermal unfolding process when this was induced Results Information on the secondary structure of the catalytic domain...
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Comparison between the Matrix Pencil Method and the Fourier Transform Technique for High-Resolution Spectral Estimation
... function of u1 u2 The accuracy in the frequencies estimation, using the TFBMPM, depends strongly on the difference of phases between the components of the signal It has been proved [2] that the inverse ... FIG Inverse of the CRB of the first frequency estimate, as a function of the difference of phases of the two frequency components and the difference of frequencies SNR Å 17 dB The input data for ... inverse of the variance of the frequencies estimates, 113 6204$$0256 ÉAmÉ2 ; 2s dspas AP: DSP FIG Inverse of the variance of the first frequency estimate, as a function of the difference of phases of...
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Báo cáo hóa học: " Aqueous-Phase Synthesis of Silver Nanodiscs and Nanorods in Methyl Cellulose Matrix: Photophysical Study and Simulation of UV–Vis Extinction Spectra Using DDA Method" docx
... out -of- plane resonance located around 340 nm The position as well as intensity of all these resonances varies as a function of the nanodisc size Effect of size on the optical scattering and absorption ... dimension along the long axis to that of the short axis Effect of aspect ratio on the optical scattering and absorption efficiencies and their relative contributions to the total extinction were systematically ... transition of silver nanosphere using the modified Mie’s equation by Bohren and Hoffman equation [52] and compared the results with the convergent solution of DDA Figure shows the extinction efficiency...
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báo cáo hóa học:" Research Article Pitch- and Formant-Based Order Adaptation of the Fractional Fourier Transform and Its Application to Speech Recognition" pptx
... consonants The rest of the paper is organized as follows In Section 2, the AM-FM model of speech is described, and the motivation of the proposed method is given In Section 3, the definition and ... recorded the five Mandarin vowels [a], [i](yi), [u](wu), [e], and [o](wo) with four tones: the flat tone (tone 1), the rising tone (tone 2), the falling and rising tone (tone 3), and the falling tone ... almost all the adaptation methods Contrarily, most of the adaptation methods not have any positive effect on the consonants /d/, /h/, /ng/, /r/, /l/, /z/, and /p/ Discussion and Conclusions The specific...
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Electron transfer of carotenoids imbedded in MCM 41 and ti MCM 41 EPR, ENDOR and UV vis studies
... terminal groups of I Localization of the charges in the dication of I contributes to its stabilization due to the effect of solvation, whereas the delocalization of the charge over the whole molecular ... double bond in the ring (C5-C6) is out of the plane formed by other carbon-carbon double bonds due to the repulsions between methyl groups on the ring and the hydrogen atom at the end of the C7-C8 ... repulsion which occurs when the two charges of the dication are localized at the end of I, at a large distance from one another.32 This localization is favored by the ease of oxidation of the terminal...
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Fast fourier transform on multipoles algorithm for elasticity and stokes flow
... boundary condition) and Neumann boundary condition (second-type boundary condition or natural boundary condition) The Dirichlet boundary condition prescribes the value of Φ on the boundary, while the ... the FMM by combining precondition and adaptation to reduce both the computation and memory storage to O(N ) The precondition decreases the number of iterations of their iterative solver and the ... integral equation formulation for the partial differential equation The first is the direct method, and the integral equations are derived through the application of Green’s second theorem The other technique...
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Accurate and efficient three dimensional electrostatics analysis using singular boundary elements and fast fourier transform on multipole (FFTM)
... accurate solutions The effect of the size of the singular element is also investigated 4.1 Formulation of Two-Dimensional Singular Elements The solution to the two-dimensional Laplace equation is generally ... k (ξ ) are the basis functions, ue are the nodal values at the k -th node of the element, and ne is the number of nodes on the element Note that the basis functions for the geometry and variables ... for the h- method, and infinite order of interpolation functions for the p- method Combination schemes The above-mentioned schemes have their pros and cons Hence, different combinations of these...
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So sánh hai phương pháp định lượng Berberin nguyên liệu bằng HPLC theo dược điển Trung Quốc (2005) và bằng đo quang phổ hấp thụ UV-VIS theo dược điển Việt Nam III.DOC
... Pharmacopoeia of the peoples republic of China (2005), volum III, p.94- 96 38 14 The Korean Pharmacopoeia, 8th edition (2002), p.81-82 15 The Japanese Pharmacopoeia fifteenth edition (2006), p.351- ... edition (2006), p.351- 352 16 Wang, S D; Song, B.S (2000), Determination of berberin in decoted liquid from Shensu granules with water by reversed- phase liquid chromatography, Sepu, p 261- ... phơng pháp đo quang phổ hấp thụ UV-VIS theo DĐVN III 2.2.2.1./Tính xác : Nguyên tắc: Độ xác phơng pháp đợc đánh giá độ lệch chuẩn tơng đối phép thử song song Cách tiến hành kết đợc trình bày nh...
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The Discrete Fourier Transform
... versions The real version is the simplest, using ordinary numbers and algebra for the synthesis and decomposition For instance, Fig 8-1 is an example of the real DFT The complex versions of the ... sinusoid, and at exactly the same frequency as the input Only the amplitude and phase can change Polar notation directly represents signals in terms of the amplitude and phase of the component cosine ... zero, and therefore provide no contribution The synthesis equation, Eq 8-2, is then used to convert the amplitudes of the cosine waves, (b), into the time domain signal, (a) This describes how the...
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Fourier Transform Properties
... at the same location, possible only when their phases are coordinated In short, much of the information about the shape of the time domain waveform is contained in the phase, rather than the ... contains information on the location of events in the time domain signal c Reconstructed from the phase Amplitude Amplitude -1 -2 64 128 Sample number The result? The locations of the edges are clearly ... in (a), portions of the signal that exits to the right, reappear on the left In the frequency domain, (b), portions of the signal that exit to the right, reappear on the right as if they had been...
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Fourier Transform Pairs
... making one-half of the pulse on the right of the graph and the other one-half on the left This appears to the DFT as a single pulse because of the time domain periodicity The DFT of this signal ... discontinuity the value of the reconstructed signal converges to the midpoint of the step As shown by Gibbs, the summation converges to the signal in the sense that the error between the two has ... value of zero, or (2) not existing Either way they don't contribute to the synthesis of the time domain signal In other words, a discrete frequency spectrum consists of harmonics, rather than a continuous...
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The Fast Fourier Transform
... CORRELATION 5010 'Upon entry, N% contains the number of points in the DFT, and 5020 'XR[ ] and XI[ ] contain the real and imaginary parts of the time domain 5030 'Upon return, REX[ ] and IMX[ ] contain ... 'THE FAST FOURIER TRANSFORM 1010 'Upon entry, N% contains the number of points in the DFT, REX[ ] and 1020 'IMX[ ] contain the real and imaginary parts of the input Upon return, 1030 'REX[ ] and ... 'Upon entry, N% contains the number of points in the IDFT, REX[ ] and 2020 'IMX[ ] contain the real and imaginary parts of the complex frequency domain 2030 'Upon return, REX[ ] and IMX[ ] contain...
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