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STUDY ON THE SPECTRAL MIXING MODEL FOR MINERAL PIGMENTS BASED ON DERIVATIVE OF RATIO SPECTROSCOPY-TAKE VERMILION AND STONE YELLOW FOR EXAMPLE
Chinese Historical Paintings, Mineral Pigments, Spectral Mixing Model, Derivative of Ratio Spectroscopy, Quantitative Analysis
2018/5/16
Hyperspectral remote sensing is a completely non-invasive technology for measurement of cultural relics, and has been successfully applied in identification and analysis of pigments of Chinese histori...
Probing Excited-State Electron Transfer by Resonance Stark Spectroscopy:4.Mutations near BL in Photosynthetic Reaction Centers Perturb Multiple Factors that Affect BL/fBL+HL
Excited-State Electron Transfer Resonance Stark Spectroscopy Mutations near BL Photosynthetic Reaction Centers Perturb Multiple Factors BL/fBL+HL
2016/5/24
Stark spectra have been obtained in the region of absorption by the accessory bacteriochlorophylls (the B-band region around 800 nm) in Rhodobacter sphaeroides reaction centers. The Stark spectra in t...
Probing Excited-State Electron Transfer by Resonance Stark Spectroscopy:3.Theoretical Foundations and Practical Applications
contracted basis Lanczos algorithm methane vibrational spectroscopy
2016/5/24
Resonance Stark effects are nonclassical Stark effects associated with excited-state charge-transfer processes. The theory of resonance Stark effects developed in Part 2 of this series is generalized ...
Analysis of Noise for Rapid-Scan and Step-Scan Methods of FT-IR Difference spectroscopy
Noise Rapid-Scan Step-Scan Methods FT-IR Difference spectroscopy
2016/5/23
Quantitative vibrational difference spectroscopy of small signals requires techniques that minimize spectral noise. As simple modulation of the sample followed by signal demodulation is often problema...
Vibrational Stark Spectroscopy of NO Bound to Heme:Effects of Protein Electrostatic Fields on the NO Stretch Frequency
rare earth alloys X-ray diffraction crystal structure phase diagram
2016/5/23
The vibrational Stark effect measures the effect of an external electric field on the vibrational (IR) spectrum of a molecule. This technique gives quantitative information on the sensitivity of a vib...
Stark Effect Spectroscopy of the Heme Charge Transfer Bands of Deoxymyoglobin
materials science electronic structure oxygen compounds myoglobin charge transport stark effect absorption spectra spectroscopy heme protoporphyrins
2016/5/23
We report the Stark spectra of the Soret, Q, and charge-transfer bands of deoxymyoglobin. The data show that band III has charge-transfer character but that the magnitude of the charge displacement is...
Stark Spectroscopy of Donor/Acceptor Substituted Polyenes
Stark Spectroscopy Donor Acceptor Substituted Polyenes
2016/5/23
The electronic structure of donor/acceptor polyenes (merocyanines) is studied by means of electroabsorption (Stark) spectroscopy. Molecules belonging to this class exhibit an extreme variability of th...
The effects of applied electric fields on the absorption or emission spectrum of a molecule is known as Stark Spectroscopy. This method probes the movement of charge associated with optical excitation...
Higher-Order Stark Spectroscopy:Polarizability of Photosynthetic Pigments
Higher-Order Stark Spectroscopy Polarizability Photosynthetic Pigments
2016/5/23
Stark spectra for nonoriented molecules with typical broad inhomogeneous line widths are obtained by applying an ac electric field and detecting the change in absorbance at the second harmonic of the ...
Near-Infrared Resonance Raman Spectroscopy of the Special Pair and the Accessory Bacteriochlorophylls in Photosynthetic Reaction Centers
Near-Infrared Resonance Raman Spectroscopy Accessory Bacteriochlorophylls Photosynthetic Reaction Centers
2016/5/23
Rapid-flow resonance Raman spectra of the primary electron donor (a bacteriochlorophyll dimer known as P) and of the monomeric accessory bacteriochlorophylls (B) in the bacterial photosynthetic reacti...
Stark Effect Spectroscopy of the 1250 nm P+ Band of Rhodobacter sphaeroides Reaction Centers and Related Model Compounds
Photosynthesis Reactioncenter Stark spectroscopy Mixedvalence
2016/5/23
The absorption and Stark effect spectra of the 1250 nm hand associated with the oxidized special pair (P+) in Rhodobacter sphaeroides reaction centers have been measured. The absorption spectrum in th...
Photochemical Hole-Burning Spectroscopy of a Photosynthetic Reaction Center Mutant with Altered Charge Separation Kinetics:Properties and Decay of the Initially Excited State
PRIMARY ELECTRON-DONOR VIRIDIS REACTION CENTERS BACTERIAL REACTION CENTERS RHODOPSEUDOMONAS-VIRIDIS RHODOBACTER-SPHAEROIDES BURNED SPECTRA PURPLE BACTERIA LOW-TEMPERATURE ABSORPTION HETERODIMER
2016/5/23
Photochemical hole-burning spectra have been obtained for the lowest energy electronic absorption band of the primary electron donor P of photosynthetic reaction centers (RCs) that exhibit different r...
Discrimination of color copier/laser printer toners by Raman spectroscopy and subsequent chemometric analysis
Forensics Raman Color Toners Chemometrics
2015/5/21
Toner analysis has become an area of increased interest due to the wide availability of laser printers and photocopiers. Toner is most often encountered on paper in questioned document analysis. Becau...
Remarks on Some Reference Materials for Applications in Elastic Peak Electron Spectroscopy
Remarks Applications Electron Spectroscopy
2010/9/17
The quantification of results of electron spectroscopies, AES and XPS, requires knowledge of the inelastic mean free path (IMFP) of signal electrons in solids. This parameter determines the surface s...
Non-destructive Depth Profiling of the Activated Ti-Zr-V Getter by Means of Excitation Energy Resolved Photoelectron Spectroscopy
Non-destructive Depth Profiling the Activated Ti-Zr-V Getter Excitation Energy Resolved Photoelectron Spectroscopy
2010/9/17
Non-evaporable Ti-Zr-V ternary getters (NEGs) were studied by means of excitation energy resolved photoelectron spectroscopy (ERXPS). We attempted a quantitative study of the in-depth redistribution o...