Results 261 to 270 of about 231,425 (302)

Subtracting the Raman Spectrum of Solvent for Quantitative Analysis

Journal of Raman Spectroscopy
ABSTRACTRaman spectroscopy is widely employed for quantitative analysis in aqueous solutions, yet it faces a notable challenge: the overlap of water Raman bands, often used as an internal standard, with analyte bands. To overcome this hurdle, we have developed an automated fitting method that encompasses intensity normalization, solvent subtraction ...
Fei Zhang, Kailin Sun, Yiming Jiang, Guoqing Jia, Fengtao Fan, Can Li   +5 more
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Solution Raman spectrum and normal-co-ordinate analysis of dioxygen difluoride

Journal of the Chemical Society, Dalton Transactions, 1973
Raman spectra of O2F2 in CClF3 solution are reported for the first time. A vibrational assignment is proposed based on polarisation data. A reinvestigation of the vibrational-potential function and a calculation of the barrier height to internal rotation have been made.
Jeremy K. Burdett, Derek J. Gardiner, James J. Turner, Richard D. Spratley, Peter Tchir   +4 more
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Critical-point analysis of the two-phonon Raman spectrum of silicon

Journal of Physics and Chemistry of Solids, 1974
Abstract Two-phonon Raman spectrum of silicon has been measured in back-scattering configuration at room temperature using Argon ion laser. It reveals many critical points and consists mainly of two-phonon overtone states. The agreement between the calculated density of states from neutron diffraction data and the present Raman spectrum is excellent ...
K. Uchinokura, T. Sekine, E. Matsuura
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ChemInform Abstract: Structural Analysis of Molecules from Their Raman Spectrum.

ChemInform, 1993
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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Raman spectrum calculation and analysis of aflatoxin B₁

2013 International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale, 2013
Aflatoxin Bl is one of the main harmful ingredients of illegal cooking oil which can lead to liver cancer. This paper indicates the geometry structure of aflatoxin B1, and the structure is optimized through density functional theory (DFT) method. Then we calculate its Raman Spectra and Infrared Spectra separately by using Hartree-Fock (HF) and DFT ...
Jing Shi, Wanying Song, Meihui Jin, Wenlong Li, Ziyu Liu, Tingting Wang, Yu Liu, Yong Tan, Hongxing Cai   +8 more
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[EMD Time-Frequency Analysis of Raman Spectrum and NIR].

Guang pu xue yu guang pu fen xi = Guang pu, 2016
This paper analyzes the Raman spectrum and Near Infrared Spectrum (NIR) with time-frequency method. The empirical mode decomposition spectrum becomes intrinsic mode functions, which the proportion calculation reveals the Raman spectral energy is uniform distributed in each component, while the NIR's low order intrinsic mode functions only undertakes ...
Xiao-yu, Zhao, Yi-ming, Fang, Feng, Tan, Liang, Tong, Zhe, Zhai   +4 more
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Lattice dynamics and Raman scattering spectrum of elpasolite Rb2KScF6: Comparative analysis

Physics of the Solid State, 2004
Raman scattering spectra of elpasolite Rb2KScF6 are studied in a wide temperature range including two phase transitions: from the cubic to the tetragonal phase and then to the monoclinic phase. The experimental Raman scattering spectrum is compared with the lattice vibration spectra of these phases calculated using an ab initio approach.
S. N. Krylova, A. N. Vtyurin, A. Bulou, A. S. Krylov, N. G. Zamkova   +4 more
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A Portable Spectrum Measurement System Based on Laser-Raman and Fluoresce Spectrum for Cooking Oil Analysis

Advanced Materials Research, 2012
A system based on spectrum analysis for cooking oil testing which combining laser-induced-fluorescence and laser-Raman technology is established. Several oil samples are testing by this system. The measurement results show that, there are rich information for fluorescence and Raman spectrum for the oil samples and there are obvious difference between ...
Wei Wei Feng, Wei Zhang, Xiao Xue Tian, Hai Long Peng, Hua Xiong, Ling Xin Chen   +5 more
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Analysis of the raman spectrum of single crystals of naphthalene

Proceedings of the Indian Academy of Sciences - Section A, 1942
The paper reports the results of an exhaustive study and evaluation of 24 spectrograms concerning the Raman effect in a single crystal of naphthalene recorded for various settings of the crystal with respect to the directions of incidence and observation, and also for various directions of vibration in the incident and scattered radiations.
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Biochemical component analysis of human myopic corneal stroma using the Raman spectrum

International Ophthalmology
This study aimed to measure the Raman spectrum of the human corneal stroma lens obtained from small incision lenticule extraction surgery (SMILE) in Asian myopic eyes using a confocal Raman micro-spectrometer built in the laboratory.Forty-three myopic patients who underwent SMILE with equivalent diopters between - 4.00 and - 6.00 D were selected, and ...
Jing, Li, Zhe, Yu, Ming, Han, Qi, Zeng, Yaohua, Zhang, Shengsheng, Wei, Liping, Wu, Jing, Du, Juan, Li, Jinrong, Gao, Yong, Li, Xueli, Chen   +11 more
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