Results 251 to 260 of about 333,648 (309)
Some of the next articles are maybe not open access.
UV‐vis spectroscopy of gas‐phase ions
Mass Spectrometry Reviews, 2021AbstractPhotodissociation action spectroscopy has made a great progress in expanding investigations of gas‐phase ion structures. This review deals with aspects of gas‐phase ion electronic excitations that result in wavelength‐dependent dissociation and light emission via fluorescence, chiefly covering the ultraviolet and visible regions of the spectrum.
openaire +2 more sources
2013
In a UV-Vis (ultraviolet-visible light) spectroscopic measurement, light absorption as a function of wavelength provides information about electronic transitions occurring in the material. For semiconductors, UV-Vis spectroscopy offers a convenient method of estimating the optical band gap, since it probes electronic transitions between the valence ...
Zhebo Chen +13 more
openaire +1 more source
In a UV-Vis (ultraviolet-visible light) spectroscopic measurement, light absorption as a function of wavelength provides information about electronic transitions occurring in the material. For semiconductors, UV-Vis spectroscopy offers a convenient method of estimating the optical band gap, since it probes electronic transitions between the valence ...
Zhebo Chen +13 more
openaire +1 more source
UV/VIS‐spectroscopy of liquid slags
Steel Research, 1999UV/VIS‐spectroscopical methods have been applied to investigate the absorption behaviour of CaO‐Al2O3‐SiO2‐slags in a wide temperature range from 20 to 1655°C. The observations reveal a strong temperature dependence of the absorption bands, which can be explained by means of a newly developed theoretical model.
Stefano Okretic, Norbert Nowack
openaire +1 more source
2009
The π π* transition of conjugated double bonds is above ≈200 nm with typical intensities of the order of log e ≈ 4. Its position can be estimated with the Woodward– Fieser rule.
Ernö Pretsch +2 more
openaire +1 more source
The π π* transition of conjugated double bonds is above ≈200 nm with typical intensities of the order of log e ≈ 4. Its position can be estimated with the Woodward– Fieser rule.
Ernö Pretsch +2 more
openaire +1 more source
Multivariate calibration in UV-vis spectroscopy
Journal of Chemometrics, 2005A multivariate calibration procedure based on principal component analysis is proposed. UV–vis spectra of ternary mixtures have been used to check the applicability of the procedure.
C. Pizarro +2 more
openaire +1 more source
Time-Resolved UV-VIS Spectroscopy of Microbial Rhodopsins
2022Absorption of light quanta by microbial rhodopsins (or more generally by retinal proteins) leads to conversion of the light energy to the generation of transmembrane anion or cation gradients, optically gated channels, or signal states in photoreception.
Dmytro, Soloviov +2 more
openaire +2 more sources
2017
This chapter describes ultraviolet-visible (UV–Vis) spectroscopy because it is one of the most important analytical techniques used for a wide range of applications including food and beverage analysis, life sciences, clinical diagnostics, drug discovery, and environmental science.
openaire +1 more source
This chapter describes ultraviolet-visible (UV–Vis) spectroscopy because it is one of the most important analytical techniques used for a wide range of applications including food and beverage analysis, life sciences, clinical diagnostics, drug discovery, and environmental science.
openaire +1 more source
UV–Vis Spectroscopy for Food Analysis
2021Detection of food quality, authenticity, and adulteration is a great concern among consumers in the current market. Given the inherent complexity of food products, most instrumental techniques employed for quality and authenticity evaluation are time-consuming, expensive, and labor-intensive.
Farah Haque +2 more
openaire +1 more source
UV–VIS absorption spectroscopy: Lambert-Beer reloaded
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2017UV-VIS absorption spectroscopy is used in almost every spectroscopy laboratory for routine analysis or research. All spectroscopists rely on the Lambert-Beer Law but many of them are less aware of its limitations. This tutorial discusses typical problems in routine spectroscopy that come along with technical limitations or careless selection of ...
Werner, Mäntele, Erhan, Deniz
openaire +2 more sources

