optical spectroscopy and spectroscopic lineshapes
Báo cáo khoa học: Specific Ca2+-binding motif in the LH1 complex from photosynthetic bacterium Thermochromatium tepidum as revealed by optical spectroscopy and structural modeling pdf
... wavelengths of both the 915 and 889 nm forms shift to blue, and the emission bands get broader (Fig 2) For the 915 nm form, the peak wavelength shifts from 945.4 to 939.5 nm, and the bandwidth increases ... of Ca2+-binding proteins, and is also known as the EF hand [16] Proteins containing the EF hand are divided into two classes according to their functions: signaling and buffering ⁄ transport ... stretching) and 1143 cm)1 (m2, C–C stretching) can be assigned to Near-infrared FT-Raman spectroscopy 1170 (R4) Resonance Raman spectroscopy all-trans spirilloxanthin in LH1 The Raman bands from...
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Multimodal optical spectroscopy and imaging for improving cancer detection in the head and neck at endoscopy
... MULTIMODAL OPTICAL SPECTROSCOPY AND IMAGING FOR IMPROVING CANCER DETECTION IN THE HEAD AND NECK AT ENDOSCOPY LIN KAN 2012 MULTIMODAL OPTICAL SPECTROSCOPY AND IMAGING FOR IMPROVING ... of the voice Optical spectroscopic techniques, such as AF spectroscopy and 10 DR spectroscopy, which provide the information about tissue optical properties (e.g., 11 absorption and scattering ... photon and 10 is also termed Raman Effect It was discovered by Sir Chandrasekhara Venkata 11 Raman and Kariamanickam Srinivasa Krishnan in liquids and [79] by Grigory 12 Landsberg and Leonid Mandelstam...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 1 pdf
... OPTICAL IMAGING AND SPECTROSCOPY OPTICAL IMAGING AND SPECTROSCOPY DAVID J BRADY Duke University, Durham, North Carolina Copyright ... Brady, David Jones, 196 1Optical imaging and spectroscopy / David Jones Brady p cm Includes bibliographical references and index ISBN 978-0-470-04823-8 (cloth) Optical spectroscopy Imaging systems ... 8.5 Spectroscopy 333 Spectral Measurements / 333 Spatially Dispersive Spectroscopy / 337 Coded Aperture Spectroscopy / 341 Interferometric Spectroscopy / 349 Resonant Spectroscopy / 354 Spectroscopic...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 2 ppt
... stereo vision systems and actively illuminated acoustic and optical ranging systems Each approach has advantages specific to targeted object classes and applications Ranging and stereo vision are ... state of optical phenomena, such as spectra, coherence, and polarization parameters, independent of sources and detectors Representation, analysis, transformation, and measurement of optical fields ... explanation of resonance and color in optical cavities and quantum mechanical interactions One might say that Fourier analysis is attractive because optical propagation is linear and because field– matter...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 3 potx
... detected by optically induced chemical, physical, thermal, and electronic effects Optoelectronic detection interfaces for imaging and spectroscopy are the focus of Chapter Optical Imaging and Spectroscopy ... of optical waves and optical interactions is the focus of this chapter In view of the peculiarly quantum mechanical nature of optical field generation and detection, it is important to understand ... advised to consult standard courses and texts for deeper understanding [53,164] Wavelets often describe images and other natural signals well The intuitive match between wavelets and images arises...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 4 docx
... irradiance-based imaging and spectroscopy (which is to say, essentially all optical imaging and spectroscopy) The enormous disparity between the oscillation frequency of the optical field and the temporal ... applied to understand optical signal generation, propagation, and detection The postulates of quantum mechanics and the Maxwell equations reflect empirical features of optical fields and field – matter ... those of random processes Noise in imaging and spectroscopy differs from noise in optical communication, data processing, and data storage systems because temporal signal modulation and read frequencies...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 5 ppsx
... bandwidth product and the etendue of an optical system The space – bandwidth product is the product of the spatial support over which an optical signal is observed and the spatial frequency bandwidth ... expands our attention to input – output relationships between object and image volumes 3D analysis requires a careful distinction between coherence measures of the propagating optical field and ... instances of field propagation through optical systems, including free-space diffraction as illustrated in Figs 4.2 and 6.1 and propagation through lenses (Fig 4.13) and transmittance masks (Fig 4.8)...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 6 potx
... Derive and explain these limits Compare the resolution of this approach with projection tomography and optical coherence tomography 6.11 Bandwidth Section 6.6.1 argues that the spatial bandwidth ... distinguish measurement, analysis, and display Optical Imaging and Spectroscopy By David J Brady Copyright # 2009 John Wiley & Sons, Inc 253 254 SAMPLING A mathematical and/ or physical process is associated ... for data storage and transmission One then uses interpolation algorithms to adapt and expand the analysis samples for diverse display and feature estimation systems Pinhole and coded aperture...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 7 potx
... transmission, and reflection may arise in optical devices and materials as a result of microscopic optical and electronic properties rather than macroscopic optical design Resonant effects are created by optical ... a discrete representation of an optical signal, and let g represent a measurement We assume that both f and g represent optical power densities, meaning that fi and gi are real with fi , gi ! ... coding and inverse problems is enormous, but with little clear guidance beyond a general understanding that singular values and singular vectors may be used to roughly understand the SNR and structure...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 8 pptx
... [51] and/ or from observations of the variation of the ring pattern as the optical thickness nd is modulated as a function of time Over the range such that the optical, pixel and longitudinal bandpass ... Figs 9.2 and 9.4 because they achieve high diffraction efficiencies over broad spatial and spectral bandwidths Etched or ruled reflection gratings achieve similar efficiencies and spatial bandwidth, ... wavelengths within the stopband and passes wavelengths outside the stopband The approximate width of the stopband is dl ¼ l 2Dn pn (9:92) which is roughly equivalent to the stopband width observed for...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 9 doc
... resolution, and field of view In practice, however, optical system performance is limited by both aperture size and the capabilities of optical and optoelectronic processing to condition and extract ... components are u ¼ Dx=l and v ¼ Dy=l The longitudinal frequency is w ¼ q=l The bandpass is determined by the limits of Dx, Dy, and q within the aperture and cannot be increased by optical or electronic ... ¼ A=l, and jwjmax ¼ A2 =8l The band volume covers the disk u2 þ v2 A=l in the w ¼ plane The extent along w depends on u and v The structure of the bandpass is discussed in Section 6.3, and the...
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OPTICAL IMAGING AND SPECTROSCOPY Phần 10 doc
... and sampling strategy An optical sensor may be evaluated based on physical (resolution, FOV, and depth of field), signal fidelity (SNR and MSE), and information-theoretic (feature sensitivity and ... apple, and green pineapple) One also observes both specular and diffuse reflection from the objects As expected, the banana and pineapple are more apparent in the yellow and green bands, and the ... E Candes and J Romberg, Sparsity and incoherence in compressive sampling, Inverse Problems 23(3):969 –985, 2007 39 E J Candes, J K Romberg, and T Tao, Stable signal recovery from incomplete and...
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A method for 3d nano focusing of optical energy and its application to the surface enhanced raman spectroscopic study of protein 2
... obtained by Johnson and Christy previously (73), and setting ε and ε as 2.25 and 1.77 respectively (i.e = glass, = water), a map of R versus d (thickness of the metal film 1) and the incident angle ... constant 111 R E2 (a) R 2 (b) E2 (c) 2 (d) Figure A map of R and E versus d (thickness of the metal film 1) and θ o (a and b) spolarization (c and d) p-polarization ε = 2.25 (glass) ε = 1.76 (water) ... spolarization 115 R E2 (b) (a) R E2 (c) 2 (d) Figure A map of R and E versus d (thickness of the metal film 1) and θ o (a and b) spolarization (c and d) p-polarization ε = 2.25 (glass) ε1 = 1.76 (water)...
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A method for 3d nano focusing of optical energy and its application to the surface enhanced raman spectroscopic study of protein 1
... of R and E versus d (thickness of the metal film 1) and θ o (a and b) spolarization (c and d) p-polarization ε = 1.76 (water) 112 Fig A map of R versus d (thickness of the metal film) and θ ... 100-nm nano-cavity substrate with cavitysurface distance of (a and b) 10 nm, and (c and d) 20 nm (a) and (c) are topology plot, while (b) and (d) are near-field images 172 Chapter Dielectric Nano-cavity ... Raman spectroscopy and its use in the studies of protein structures Finally, the main goal of the current thesis will be discussed 1.2.1 Electronic Spectroscopy Electronic spectroscopy refers to spectroscopic...
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Tài liệu Báo cáo khoa học: Analysis of the molecular dynamics of medaka nuage proteins by fluorescence correlation spectroscopy and fluorescence recovery after photobleaching doc
... of medaka embryos and the granules in HeLa cells FRAP revealed that it moved with two diffusion components in both PGCs and HeLa cells: 0.15 and 0.01 lm2ặs)1 in PGCs, and 0.9 and 0.03 lm2ặs)1 ... time point t, T0 and Tt represent the uorescence in the whole cell at time points and t, respectively, and B0 and Bt represent the uorescence in the bleached region at time points and t Diffusion ... nuage in the PGC 344 Merge Fig Olvas, Nanos and Tudor fusion proteins expressed in the HeLa cell form granules olvasGFP and nanosRFP (A), and olvas RFP and tudorGFP (B), were cotransfected into...
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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
... number and position, as well as an estimation of the bandwidth and the intensity of the bands making up the amide I or I¢ region Thereafter, curve fitting was performed and the heights, widths and ... of the IR amide I band, located between 1700 and 1600 cm)1 and arising mainly from the C ¼ stretching vibration of the peptidic bond This band is conformationally sensitive and can be used to ... Structure and thermal denaturation of crystalline and noncrystalline cytochrome oxidase as studied by infrared spectroscopy Biochemistry 33, 11650–11655 Krimm S & Bandekar J (1986) Vibrational spectroscopy...
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Optical spectroscopy of silicon nanowires
... different temperatures Two strong emission bands in the green and blue regions revealed peaking at 455 and 525 nm at low temperature, respectively The band that peaked at 455 nm is close to the ... Raman structure between 400 and 550 cmÀ1 peaked at 480 cmÀ1 [7] Asymmetrically broadened and frequency downshifted line shapes are usually observed in nanocrystalline and related to phonon confinement ... that the green and blue PL emissions come from the radiative recombination from the defect centers in the overcoated silicon oxide layer and the interface between crystalline core and amorphous...
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Raman spectroscopy and field electron emission properties of aligned silicon nanowire arrays
... frequency shifts and the more asymmetric and the broader the peak becomes This feature has been confirmed by experiments on nanocrystalline silicon [22] and porous silicon [23] and SiNWs fabricated ... completely (Fig 2a and b) Further structural characterization of the SiNWs was performed with TEM and HRTEM Fig shows a typical individual nanowire Fig SEM images of as-prepared and treated SiNWs ... acetone and ethanol for 20 each The cleaned silicon wafer was immersed in a mixture of 4.6 mol/L HF aqueous solution and 0.02 mol/L silver nitrate with equal volume Then, the autoclave was sealed and...
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Coupled Blind Signal Separation and Spectroscopic Database Fitting of the Mid Infrared PAH Features ppt
... [7.7]/[11.3] µm and [8.6]/[11.3] µm ratios, but the 6.2, 7.7, and 8.6 µm features include blended PAH+ and PAH0 bands As we show here, the 11.0 µm band is a purely cationic band and the 11.2 µm band is ... splitting of the initial 11.2 µm PAH band into two bands at 11.0 µm and 11.4 µm due to the Si adsorption on the PAH edge creates and a blue-shifted 6.2 µm band We argue here (see Section 6.2), ... band stretches from 12.5 to 13.0 µm Comparing the PAH+ and PAH0 spectra, there is a systematic 0.2 µm blue shift between the emitting bands We not observe this shift in the 13.5 µm band PAH band...
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Báo cáo khoa học: Biochemical and spectroscopic characterization of the bacterial phytochrome of Pseudomonas aeruginosa pdf
... dashed line) and BphP C12A (dotted line) (B) Zinc-induced red fluorescence ApoBphP wildtype and variants were incubated with biliverdin IXa, and, after SDS ⁄ PAGE (labeled protein) and electroblotting, ... solution and incubated for 20 at room temperature [32] Spectra and zinc-induced red fluorescence were measured as described above Fluorescence spectroscopy Room temperature fluorescence emission and ... (Fig 1B) with maxima of 700 and 754 nm for the Pr and Pfr form, respectively These far-red absorbance maxima seem to be typical of biliverdin-binding phytochromes and represent the most red-shifted...
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