xrd fourier transform infrared ftir spectroscopy and ftir microspectroscopy ftir m
Fourier transformed infrared absorption spectroscopy and kinetics studies of gas phase small molecules
Ngày tải lên :
15/09/2015, 17:11
... Wah from Physics Department workshop and Mr Rajoo and Mr Guan from the Chemistry Department workshop for their technical support I also appreciate the support from Mr Teo Leong Kai, Mr Sim Hang ... The small molecules investigated here are deemed to be important intermediates in atmospheric and combustion chemistry Thus it is of relevance to understand the kinetics and reaction mechanism involving ... 18 C N Wei and R B Timmons, J Chem Phys., 62, 3240, 1975 19 Y Murakami, M Kosugi, K Susa, T Kobayashi and N Fujii, Bull Chem Soc Japan 74, 1233, 2001 20 C N Wei and R B Timmons, J Chem Phys 62,...
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Báo cáo khoa học: Light-induced reactions of Escherichia coli DNA photolyase monitored by Fourier transform infrared spectroscopy pot
Ngày tải lên :
16/03/2014, 18:20
... were from New England BioLabs (Frankfurt am Main, Germany) and from Roche Diagnostics (Mannheim, Germany) Taq DNA polymerase was from Eurogentec (Seraing, Belgium) Dithiothreitol was from Sigma Oligonucleotides ... customsynthesized by MWG Biotech (Ebersberg, Germany) 15 NH4Cl was from Cambridge Isotope Laboratories (Andover, MA, USA) Microorganisms and plasmids are summarized in Table Site directed mutagenesis ... thymine dimer Biochem Biophys Res Commun 22, 704–706 Blackburn GM & Davies RJH (1965) Structure of thymine photo-dimer Chem Commun 215–216 Otoshi E, Yagi T, Mori T, Matsunaga T, Nikaido O, Kim...
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báo cáo hóa học:" Fourier-transform infrared anisotropy in cross and parallel sections of tendon and articular cartilage" pptx
Ngày tải lên :
20/06/2014, 01:20
... achilles tendon was cleaned and freed of fat, muscle and sheaths Unfixed fragments of 10 mm long and mm thick were cut, embedded in OCT compound (cryoembedding medium) and snap frozen using liquid ... for amide I and amide II from the spectral range 1700 to 1600 cm-1 and 1600 to 1500 cm-1 respectively, from all infrared images In the case of tendon, eight by eight pixels in the chemi-maps ... their infrared anisotropy is similar to that of the radial zone fibrils in regular sections of articular cartilage (the amide I anisotropy has a maximum at 0° and a minimum at 90°; and the same...
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báo cáo hóa học:" Analysis of ovarian tumor pathology by Fourier Transform Infrared Spectroscopy" pdf
Ngày tải lên :
20/06/2014, 07:20
... the normal and malignant tissue in the region 900-1300 cm-1 [32] The two major bands in this region at 1078 cm-1 and 1238 cm-1 are mainly due to the symmetric and asymmetric stretching modes of ... tissue from a murine carcinoma by Fourier- transform infrared microspectroscopy Clin Cancer Res 2002, 8:2010-2014 25 Argov S, Ramesh J, Salman A, Sinelnikov I, Goldstein J, Guterman H, Mordechai ... potential of Fourier- transform infrared microspectroscopy and advanced computational methods in colon cancer patients J Biomed Opt 2002, 7:248-254 26 Yano K, Ohoshima S, Gotou Y, Kumaido K, Moriguchi...
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Real-Time Digital Signal Processing - Chapter 7: Fast Fourier Transform and Its Applications
Ngày tải lên :
28/10/2013, 05:15
... m WN=2 WN
N=2À1 m 0 mk x2 m WN=2 ,
7:2:5 316 FAST FOURIER TRANSFORM AND ITS APPLICATIONS where each of the summation terms is reduced to an N=2 point DFT Furthermore, from symmetry and ... 7.14, and then use N-point m 1 xm−1(n) N−1 L m xm(n) xm+1(n) m+ 1 m 1 L ym(n) m m+1 ym−1(n) discarded ym+1(n) Figure 7.14 Overlap data segments for the overlap-save technique 332 FAST FOURIER TRANSFORM ... */ ltemp.im _lsmpy(X [ im, U.re) id] ; temp.im (_smac(ltemp.im, X [ re, U.im) ) 16) id] ; temp.im _sadd(temp.im, 1) ) scale; /* Rounding & scale */ X [ re _ssub(X [ re ) scale, temp.re)...
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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
Ngày tải lên :
07/03/2014, 17:20
... and CTX in 10 mm ammonium acetate buffer (pH 6.8) The resolving power of % 150 000 (dened as m DmFWHM, where m is the ion mass and DmFWHM is the peak full width at half-maximum) allowed isotopic ... modications c Calculated from DM (p.p .m. ) ẳ [(MexpMtheor) Mexp] ã 106 Fig Expansion of the 9.4 T ESI FT-ICR mass spectrum of 10 lM TRX II in 10 mM ammonium acetate (pH 6.8) at m z 29203060 showing ... protein molecule, Eqn (1) can be written as: rẳ Fig 9.4 T ESI FT-ICR mass spectra of 10 lM TRX II with 50 lM S-Xyl5-Me (A), 50 lM S-Xyl4-Me (B) and 50 lM S-Xyl3-Me (C) in 10 mM ammonium acetate...
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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
Ngày tải lên :
16/03/2014, 13:20
... reaction mixture (final volume, 50 lL), which contained 25 mm Tris ⁄ HCl, pH 7.5, 0.1 mgÆmL)1 peptide substrate, 100 lm [32P]ATP[cP] (500 000 cpmÆnmol)1), mm MgCl2, mm dithiothreitol and 0.5 mm EGTA ... (A) 20 mm Tris (pH 8.0), 200 mm NaCl, 5% glycerol, 0.5 mm dithiothreitol and (B) 20 mm Tris (pH 8.0), 5% glycerol, 0.5 mm dithiothreitol and m NaCl Fractions containing cat-f were pooled and loaded ... (20 mgÆmL)1) In order to decompose the amide I band, the number and initial positions of the component bands were obtained from band-narrowed spectra by derivation (Fig 2B) Amide I band decomposition...
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Comparison between the Matrix Pencil Method and the Fourier Transform Technique for High-Resolution Spectral Estimation
Ngày tải lên :
26/03/2014, 00:29
... Note that the Matrix Pencil Method can solve a more general problem [1], the pole estimation, pm , for damped cisoids (pm Å Dt e ( sm/jvm ) , sm § 0, m Å 1, , K) and the undamped cisoids are ... as jm É e j 2p f mDt ; m Å 1, , K i Å 0, , N 1, has been followed, where (3.27) Am Å ÉAmÉe j um ; m Å 1, , K ͩ ͪ Imag( jm ) tan 01 ; 2pDt Real( jm ) m Å 1, , K (4.2.2) vm Å 2pfm; m ... components of a signal, which obeys the mathematical model of Section 2, from a set of noisy samples Any estimate of the frequency parameter evaluated from a set of samples involves a random...
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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
Ngày tải lên :
21/06/2014, 20:20
... transform, the Wigner-Ville distribution, the Radon-Wigner transform, and the Fractional Fourier transform Fractional Fourier transform, as a new time-frequency analysis tool, is attracting more ... in (9), the transform angle is determined by M times of the pitch rate k: α = acot(−k∗ M) (10) M will be computed from the frequency of a formant and the pitch frequency as M = fformant / fpitch ... using 10 formants its maximum is still not achieved, but for [i], the maximum is achieved using one main formant, and for [o], two formants EURASIP Journal on Audio, Speech, and Music Processing...
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Báo cáo khoa học: "A comparison of transcranial Doppler with near infrared spectroscopy and indocyanine green during hemorrhagic shock: a prospective experimental study" ppsx
Ngày tải lên :
12/08/2014, 23:21
... and to compare it with transcranial Doppler ultrasound, an established method of monitoring cerebral hemodynamics at the bedside Materials and methods Animal Investigation Committee, and animals ... NeuroSciences, Plainsboro, NJ, USA) via a multiluminal probe introducer (Licox IM3.STV, GMS, Kiel, Germany) after drilling a 5.3 mm skull burr hole 10 mm paramedian and 10 mm cranial of the coronal suture ... baseline values 90 minutes after initiation of therapy (p < 0.001 versus baseline therapy) BFI and FVmean reflected hemodynamic improvement and were at 78% and 51%, 98% and 65%, and 127% and 93% of baseline...
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Near infrared autofluorescence imaging and spectroscopy for early detection of precancer and cancer in the colon
Ngày tải lên :
10/09/2015, 08:29
... imaging of NIR DR image to NIR AF image is used to eliminate the geometric effect of the imaging measurement and the depolarization imaging is expected to improve the contrast between normal and ... environment, and metabolic function of the system As a result, these motions differ from the normal tissue to diseased tissues due to the changes of morphology and biochemical composition If a molecule ... least squares minimization (NNCLSM) biochemical model Chapter implements the integrated visible (VIS) and NIR DR spectroscopy for improving colon cancer diagnosis Finally, conclusion and discussion...
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Fast fourier transform on multipoles algorithm for elasticity and stokes flow
Ngày tải lên :
11/09/2015, 16:06
... Equation (3.19), ∂Pj (cos θ) ∂θ is obtained from differentiating Equations (3.10) to 27 CHAPTER LAPLACE EQUATION M M M M M M M M M M M M (a) Step A M M M M (b) Step B L L L L L L L L L L L L L L L ... introduced the multipole to Taylor transform operator to yield simpler and more efficient transforms In [13], the mathematical theory was summarised and extended by Epton and Dembart for the multipole ... n m ∂Rn m ′ L (O ), ∂x1 n n=0 m= −n m ∂Rn m ′ L (O ), ∂x2 n n=0 m= −n m ∂Rn m ′ L (O ), ∂x3 n n=0 m= −n (3.36) where m m−1 ∂Rn m+ 1 (R − Rn−1 ), = ∂x1 n−1 m ∂Rn i m 1 m+ 1 = (R + Rn−1 ), ∂x2 n−1 m...
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Infrared spectroscopy and kinetics of short lived organometallic intermediates
Ngày tải lên :
14/09/2015, 17:56
... experiment, leading to formation of M- M bonds of symmetric dimeric species [Cp M( CO)3]2 and [Cp M( CO)2PR3]2 We 43 assumed that the M- M bonds in these newly formed dimeric species [Cp M( CO)3]2 and ... interferogram Fourier transformation gives the reference single beam spectrum and the phase spectrum This phase spectrum can then be used in the Fourier transformation of the dynamic AC interferograms ... assessment on time-resolved stepscan Fourier Transform infrared (TR-s2 -FTIR) spectroscopy will be provided in the following chapter 22 Scheme Photochemical homolysis of the Mo–Mo bond of Cp2Mo2(CO)6...
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Accurate and efficient three dimensional electrostatics analysis using singular boundary elements and fast fourier transform on multipole (FFTM)
Ngày tải lên :
15/09/2015, 21:09
... example by FMM from [41], and FFTM 105 Table 7.8 CPU time and memory storage requirements for some large realistic problems 111 Table 7.9 Ratio of CPU time and memory storage ... .104 Figure 7.4 Comparison on accuracy of (a) FFTM and (b) FMM, based on cell to distance ratio .105 Figure 7.5 (a) CPU time and (b) memory storage requirements for FFTM schemes using different ... approximately linear growth in terms of computational time and memory storage requirements This means that it is as efficient as existing fast methods, such as the FMM and precorrected FFT approach...
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Near infrared raman spectroscopy with recursive partitioning techniques for precancer and cancer detection
Ngày tải lên :
16/10/2015, 15:37
... The mean normalized NIR Raman spectra from normal (n=44) and dysplasia (n=21) gastric mucosa tissue samples; (b) Difference spectrum ± 1.96 SD calculated from the mean Raman spectra between normal ... normal and dysplasia tissue (i.e., the mean normalized Raman spectrum of dysplasia tissue minus the mean normalized Raman spectrum of normal tissue) Solid and dotted lines represent the mean spectra, ... primarily uses 1064 nm from a neodymium-doped yttrium aluminium garnet (Nd:YAG) laser as the excitation source, a cooled indium gallium arsenide (InGaAs) detector, and a Michelson interferometer...
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The Discrete Fourier Transform
Ngày tải lên :
13/09/2012, 09:49
... in a computer algorithm By elimination, the only Chapter 8- The Discrete Fourier Transform Type of Transform 145 Example Signal Fourier Transform signals that are continious and aperiodic Fourier ... Laplace transform, Z transform, Hilbert transform, Discrete Cosine transform, etc Just what is a transform? To answer this question, remember what a function is A function is an algorithm or procedure ... DFT transforms from the time domain to the frequency domain, while the Inverse DFT transforms from the frequency domain to the time domain (Take note: this figure describes the real DFT The complex...
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Fourier Transform Properties
Ngày tải lên :
13/09/2012, 09:49
... to MHz band for display on the screen This scheme is called frequency domain multiplexing The Discrete Time Fourier Transform The Discrete Time Fourier Transform (DTFT) is the member of the Fourier ... signal that is symmetrical around sample zero will also be symmetrical around sample N/2, and vice versa When using members of the Fourier Transform family that not view the time domain as periodic ... aliasing Imagine that the Chapter 10- Fourier Transform Properties Time Domain Frequency Domain 20 a Signal compressed b Expanded frequency spectrum 16 Amplitude Amplitude 12 -1 16 32 48 64 80 Sample...
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Fourier Transform Pairs
Ngày tải lên :
13/09/2012, 09:49
... an amplitude of one, and runs from sample number through sample number M- 1 The parameter N is the length of the DFT, and x[i] is the time domain signal with i running from to N-1 To avoid the ... one domain is discrete, the other domain must be periodic, and vice versa This holds for all four members of the Fourier transform family Since the DFT views both domains as discrete, it must ... aliased sin(BkM / N ) Mag X [ k] ' /0 /0 00 sin(Bk /N ) 00 Chapter 11- Fourier Transform Pairs Time Domain 213 Frequency Domain 20 a Rectangular pulse b Magnitude Phase (radians) Amplitude Amplitude...
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The Fast Fourier Transform
Ngày tải lên :
13/09/2012, 09:50
... (even symmetry) Amplitude Amplitude 0 -4 -1 -8 16 32 Sample number 48 64 63 16 32 Freqeuncy 48 63 b Imaginary part d Imaginary part (odd symmetry) Amplitude Amplitude 0 -4 -1 -8 16 32 Sample number ... symmetry) Amplitude Amplitude 0 -4 -1 -8 16 32 Sample number 48 63 64 16 32 Frequency 48 63 b Imaginary part d Imaginary part (even symmetry) Amplitude Amplitude 0 -4 -1 -8 16 32 Sample number ... 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 the complex time domain...
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The Complex Fourier Transform
Ngày tải lên :
13/09/2012, 10:20
... the complex Fourier transform, but is merely an option in the real Fourier transform The symmetry of the complex Fourier transform is very important As illustrated in Fig 31-1, a real time domain ... i.e., multiplying the time domain signal by a sinusoid and integrating (continuous time domain) or summing (discrete time domain) over the appropriate time domain section If the time domain signal ... mathematics, the complex Fourier transform is a greater truth than the real Fourier transform This holds great appeal to mathematicians and academicians, a group that strives to expand human knowledge,...
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