effect of specific interactions
Properties of the hole injection layer in organic semiconducting devices
... while the path length of the photons is of the order of µm while that of the electrons is of order of tens of Å Thus, only electrons that originate within the first few angstroms of the sample surface ... Conductivity measurements of PEDT:PSSH 18 1.3.4 Determination of composition of the surface of PEDT:PSSH using X-ray Photoelectron Spectroscopy 19 1.3.5 Determination of work function of PEDT:PSSH using ... spectrum KE of photoelectrons (c) Low-energy cut-off electrons of PEDT:PSSH (d) Linear-linear plot of counts against KE illustrating states at the Fermi level of PEDT:PSSH Work function of PEDT:PSSH=...
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Báo cáo khoa học: Light-induced reactions of Escherichia coli DNA photolyase monitored by Fourier transform infrared spectroscopy pot
... aimed at an elucidation of a detailed molecular picture of the light-driven DNA repair process Results Construction of a DNA photolyase E109A mutant MTHF, the second cofactor of E coli DNA photolyase, ... photolyase to a level of about 15% of total cell protein Purification by published procedures afforded the blue radical form of the mutant enzyme The yield of isolated protein was about twofold higher ... redox-active cofactor [15–17] Both 5,10-methenyltetrahydrofolylpolyglutamate (MTHF) and 8-hydroxy-5-deazaflavin serve as light-harvesting cofactors in DNA photolyases [18–20] DNA photolyase of E coli...
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báo cáo hóa học:" Fourier-transform infrared anisotropy in cross and parallel sections of tendon and articular cartilage" pptx
... profiles of amide profiles at the superficial zone (a) and the radial zone (b) Representative infrared anisotropy profiles of amide profiles at the superficial zone (a) and the radial zone (b) Page of ... case of regular/parallel sections of tendon, and (b) when the long axis of the fibril is perpendicular to the plane of the tissue section (Figure 7c), which is the case of parallel section of cartilage ... plane of the tissue section (Figure 7b), which is the Page 10 of 12 (page number not for citation purposes) Journal of Orthopaedic Surgery and Research 2008, 3:48 case of regular/cross sections of...
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báo cáo hóa học:" Analysis of ovarian tumor pathology by Fourier Transform Infrared Spectroscopy" pdf
... of been extensively employed in the field of cancer research to address the problems of tumor biology [24-30] The results of our previous research have shown its advantage in discrimination of ... depletion of protein profile in the spectrum of malignant ovarian tissue indicates towards induced diversification of energy to meet the impending energy demands during the malignant stress of cell ... with the findings of Yamada et al where the analysis of secondary structure of proteins reveal increased amount of beta sheet in necrotic area of carcinoma as compared to alpha helix [24] Moreover...
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Fourier transformed infrared absorption spectroscopy and kinetics studies of gas phase small molecules
... Photolysis of trifluoroethylnitrite 76 3.3.1 IR band of CF3CH2ONO 76 3.3.2 Photolysis of CF3CH2ONO 77 3.3.3 Effect of NO 82 3.3.4 Photolysis of CF3CD2ONO ... photolysis of nitrite species results in the formation of OH radical [24] and hence their uses as precursors of OH radicals in the studies of kinetics and mechanisms of the reactions of OH radicals ... chemical mechanism of atmospheric oxidation of many classes of VOCs [42] In addition, the conversion of NO to NO2 provides the net source of ozone as subsequent photolysis of NO2 is followed...
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Real-Time Digital Signal Processing - Chapter 7: Fast Fourier Transform and Its Applications
... 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 DFT, but instead of a linear convolution of ... operation of extending a sequence of length N1 to a length N2 (> N1 ) by appending (N2 À N1 ) zero samples to the tail of the given sequence Note that the padding number of zeros at the end of signal ... fft(x) ; to compute the DFT of time sequence x(n) in the vector x If x is a matrix, y is the DFT of each column of the matrix If the length of the x is a power of 2, the fft function employs...
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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
... changed cooperativity of the other redox centers In order to discriminate the contributions of the cofactors, inhibitors uncoupling or changing the cooperativity can be used Addition of cyanide strongly ... discrimination of these overlapped bands, we used deuteration of the sample and FT-IR spectra studies in the presence of the inhibitor cyanide support our tentative assignments Tentative assignments of difference ... and the deconvolution of the amide-I region A particular problem of the assignment in the difference spectra is the superposition of signals from different constituents of the oxidase, which...
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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
... weight of softwoods, 1530% of hardwoods and up to 30% of annual graminaceous plants [7,8] Endo-1,4-b-xylanases (EC 3.2.1.8) are O-glycoside hydrolases that catalyze a random hydrolysis of internal ... Ir Number of observations Number of unique reections Temperature (K) Rfactor (%) Rfree (%) Rmsd bond lengths (A) Rmsd bond angles () Number of all atoms Number of protein atoms Number of waters ... consequence of the contributions of heavier isotopes (primarily 13C and 15N), to be well resolved (Fig 3B, inset) Each peak represents an unresolved superimposition of several isotopic compositions of...
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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
... secondary structure of the catalytic domain of PKCf and the effect of its substrate, MgATP, and also to study the effect of thermal unfolding in the presence and the absence of MgATP We used 2D ... solvent Comparison of the secondary structure of PKCf with those of other protein kinases of the AGC family (Table 2) offers other interesting data The secondary structure of PKCi, as deduced ... spectra of buffers and ligands (like MgATP) from those of samples containing protein Figure 1A shows the difference spectra of cat-f in the presence of D2O buffer (5 mgÆmL)1) The spectra of protein...
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Comparison between the Matrix Pencil Method and the Fourier Transform Technique for High-Resolution Spectral Estimation
... 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 ... jmax dspas AP: DSP 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 ... the University of Cantabria For two years he was a member of a research team of the University of Cantabria, where he worked on POWERCAD, a project which is part of ESPRIT, one of the research...
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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
... Synthesis of nanostructures via simple wet-chemical method is one of the most favoured routes towards the cost-effective large-scale production of nanobuilding blocks Chemical synthesis of metal ... with a very few number of spheres The histogram of nanodiscs distribution (Fig 2b) shows that majority of discs have a diameter of *55 nm On the other hand, HR-TEM photograph of green-coloured silver ... 1c), obtained by using mM of sodium citrate, shows the presence of only silver nanorods of different aspect ratios (R = 3–7) The histogram of particle distribution of corresponding silver nanorods...
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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
... take advantage of the special characteristics of speech In this work, we show that the representation of the time-varying properties of speech may benefit from using the values of pitch and formants ... representation of the envelope, that is, the formant structure, of voiced speech Therefore, the aim of the mel-scale subband integration (and, additionally, the truncation of the sequence of cepstral ... rate of the nth harmonic is the second derivative of the phase function: d2 ϕn (t) = qn = nk, dt (4) which means that the chirp rate of the nth harmonic is n times the pitch rate Definition of the...
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Electron transfer of carotenoids imbedded in MCM 41 and ti MCM 41 EPR, ENDOR and UV vis studies
... ease of oxidation of the 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 ... Biosciences Division, Office of Basic Energy Sciences, Office of Science, U.S Department of Energy under Grant No DE-FG02-86ER 13465 References and Notes Figure 1H ENDOR spectrum of Car•+ of II in Ti-MCM-41 ... 2a,b,c were compared The ET efficiency of I is much higher than those of II and III, and that of II is comparable to that of III The much higher ET efficiency of I may be attributed to the fact that...
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Fast fourier transform on multipoles algorithm for elasticity and stokes flow
... 6.2 Numerical results of the FFTM with different number of nodes after three iterations 123 6.3 Numerical results of the FFTM with different number of nodes after four ... 125 IX List of Figures 3.1 Two-dimensional pictorial representation of FFTM for Laplace equation Step A: Discretization of domain into cells Step B: Transformation of sources to multipoles, ... Computation timings of FFTM and standard BEM 83 5.4 The drag force changes with the radius of the sphere 85 5.5 The accuracy of drag force changes with the radius of the sphere 86...
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Accurate and efficient three dimensional electrostatics analysis using singular boundary elements and fast fourier transform on multipole (FFTM)
... to every aspect of this work i Table of Contents Acknowlegdements i Table of Contents ii Summary vi List of Figures viii List of Tables xii Introduction 1.1 Improving Accuracy of Electrostatics ... OF DOCTOR OF PHILOSOPHY IN ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING NATIONAL UNIVERSITY OF SINGAPORE 2003 Acknowledgements First and foremost, I would like to thank late Associate Professor ... (a) Discretization of cantilever micro-beam example, (b) Deflection profile of beam before pull-in voltage, with magnification of 20 77 ix Figure 5.26 Discretization of doubly-clamped...
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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
... học, tr.106 II Tiếng Anh 12 Martindal 34 (2005), volume II, p.1659 13 Pharmacopoeia of the peoples republic of China (2005), volum III, p.94- 96 38 14 The Korean Pharmacopoeia, 8th edition (2002), ... thống kê: Dữ liệu thu đợc đợc xử lý phơng pháp thống kê - sử dụng công cụ hỗ trợ phần mềm Microsoft Excel Một số đặc trng thống kê đợc sử dụng: - Giá trị trung bình: x= n n i =1 x i (x x) ... Bột kết tinh màu vàng, không mùi, có vị đắng Tan nớc nóng, khó tan ethanol nớc lạnh, khó tan cloroform, không tan ether.[6] 1.5 Tác dụng dợc lý: - Berberin có tác dụng kháng vi trùng nh: vi khuẩn...
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The Discrete Fourier Transform
... complex points into another set of N complex points) samples taken at regular intervals of time Of course, any kind of sampled data can be fed into the DFT, regardless of how it was acquired When ... domain of this signal is called X [ ] , and consists of two parts, each an array of N/2 %1 samples These are called the Real part of X [ ] , written as: Re X [ ] , and the Imaginary part of X [ ... amplitude of 32 Figure 8-6b shows the frequency domain representation of this signal The real part of the frequency domain is a constant value of 32 The imaginary part (not shown) is composed of all...
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Fourier Transform Properties
... the sign of the imaginary part In mathematical terms, if X [f ] is composed of Re X[ f ] and Im X[ f ] , then X t[f ] is made up of Re X[ f ] and & Im X[ f ] Here are several examples of how the ... duplicate signal Likewise, the right side of the acquired signal is connected to the left side of an identical period This can also be thought of as the right side of the acquired signal wrapping around ... show the magnitude and phase of the frequency spectrum, viewed as being composed of N /2 % samples spread between and 0.5 of the sampling rate This is the simplest way of viewing the frequency spectrum,...
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Fourier Transform Pairs
... spectrum of a rectangular pulse In this equation, N is the number of points in the time domain signal, all of which have a value of zero, except M adjacent points that have a value of one The ... 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 ... of the frequency domain (f) show that an impulse at sample number four in the time domain results in four cycles of a cosine wave in the real part of the frequency spectrum, and four cycles of...
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The Fast Fourier Transform
... both parts of the time domain? By additivity, the frequency domain will be the sum of the two frequency spectra Now the key element: a frequency spectrum composed of these two types of symmetry ... price of single FFT One of the signals is placed in the real part of the time domain, and the other signal is placed in the imaginary part After calculating the complex DFT (via the FFT, of course), ... imaginary part to zero Calculation of the complex DFT results in a real and an imaginary signal in the frequency domain, each composed of N points Samples through N/2 of these signals correspond to...
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Tìm thêm: xác định các nguyên tắc biên soạn khảo sát các chuẩn giảng dạy tiếng nhật từ góc độ lí thuyết và thực tiễn khảo sát chương trình đào tạo của các đơn vị đào tạo tại nhật bản khảo sát chương trình đào tạo gắn với các giáo trình cụ thể tiến hành xây dựng chương trình đào tạo dành cho đối tượng không chuyên ngữ tại việt nam điều tra đối với đối tượng giảng viên và đối tượng quản lí điều tra với đối tượng sinh viên học tiếng nhật không chuyên ngữ1 khảo sát thực tế giảng dạy tiếng nhật không chuyên ngữ tại việt nam khảo sát các chương trình đào tạo theo những bộ giáo trình tiêu biểu nội dung cụ thể cho từng kĩ năng ở từng cấp độ xác định mức độ đáp ứng về văn hoá và chuyên môn trong ct mở máy động cơ rôto dây quấn các đặc tính của động cơ điện không đồng bộ hệ số công suất cosp fi p2 đặc tuyến hiệu suất h fi p2 đặc tuyến mômen quay m fi p2 đặc tuyến tốc độ rôto n fi p2 động cơ điện không đồng bộ một pha thông tin liên lạc và các dịch vụ chỉ tiêu chất lượng 9 tr 25