Results 21 to 30 of about 91,611 (312)

Online Observation of Structure Information of Mixed-Gas Hydrate Containing High Concentration of CO2 Based on Raman Spectroscopy

open access: yesJournal of Applied Science and Engineering, 2022
The research on the microcrystal structure of coal mine gas (CMG) hydrate is especially significant for the technology of gas hydrate separation. Raman spectroscopy is an effective method for on-line analysis of gas hydrate microstructure.
Baoyong Zhang   +4 more
doaj  

Influence of Raman Spectroscopy Test Conditions on the Results of Carbon Chemical Structure of Chars

open access: yesEnergies, 2022
To address the problem of variability in in situ Raman spectroscopy for determining the chemical structure of chars, the rationality of Raman’s original peak spectrum fitting method, the influence of objective lens magnification, particle size, and ...
Jiangyong He   +6 more
doaj   +1 more source

Stimulated Raman lineshapes in the large light–matter interaction limit

open access: yesOptical Materials: X, 2022
Stimulated Raman scattering (SRS) represents a powerful tool for accessing the vibrational properties of molecular compounds or solid state systems. From a spectroscopic perspective, SRS is able to capture Raman spectra free from incoherent background ...
Giovanni Batignani   +4 more
doaj   +1 more source

Gas-Phase Raman Spectrum of NO Dimer

open access: yesJournal of Molecular Spectroscopy, 1999
Thanks are due to the Spanish DGICYT (Research Project PB 94-1526) and to the Iberdrola Foundation for financial support.
Fernández Sánchez, José María   +4 more
openaire   +4 more sources

Vibration spectroscopic analysis and quantum chemical calculation of thymine

open access: yes上海师范大学学报. 自然科学版, 2014
In this paper,Raman and IR spectra of thymine(Th) were measured respectively in this paper.Molecular structure of Th was optimized and it’s Raman and IR bands were calculated using B3LYP/6-311G(contain Density functional theory,DFT) method.It was found ...
FU Yichen   +5 more
doaj   +1 more source

Raman spectrum of AgGaS2

open access: yesJournal of Physics C: Solid State Physics, 1975
We present new measurements of the optical mode frequencies in AgGaS2, and suggest reasons why previous determinations are in error. The results indicate that AgGaS2 cannot be regarded as a small perturbation of a zincblende structure, but they are in accord with the predictions of a recent model calculation by Bettini.
Lockwood, D., Montgomery, H.
openaire   +1 more source

The Raman Spectrum of Deuterium [PDF]

open access: yesThe Journal of Chemical Physics, 1935
A number of observers have studied the emission spectra of mixtures of hydrogen and deuterium. The Fulcher bands of HD and D2 have been photographed [1]. In the extreme untrlaviolet Jeppesen [2], and Beutler and Mie [3], have obtained emission spectra from hydrogen-deuterium mixtures and have ascribed several bands to HD.
Anderson, Thomas F., Yost, Don M.
openaire   +2 more sources

Corrosion Process of Stainless Steel 441 with Heated Steam at 1,000 °C

open access: yesHigh Temperature Materials and Processes, 2017
Stainless steel 441 was oxidized in water vapor containing atmospheres at 1,000 °C to study the contrary effects of water vapor on the oxidization process. The steel in 3.5 vol.
Chen Zhiyuan   +6 more
doaj   +1 more source

Cost-Effective Raman Spectra Acquisition Based on Spreading Code Modulation for Exciting Light

open access: yesIEEE Photonics Journal
Raman spectroscopy is a powerful, non-destructive analytical tool that is widely used across various fields for identifying molecular structures and reactions. However, Raman spectroscopy may be hindered by background and fluorescence noises.
Yu Wan   +6 more
doaj   +1 more source

Economic Analysis of the Thermal Performance of a Novel Solar Thermal Power Generation System Considering Solar Radiation Intensity

open access: yesChemical Engineering Transactions, 2018
Based on the traditional sorting methods of logistics, this paper presents a joint detection and sorting method for dangerous chemicals based on X-ray and Raman spectrum.
Yiying Lyu, Hong Min
doaj   +1 more source

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