Results 1 to 10 of about 35,633 (198)
Reduction of optical noise in near-infrared range laser hygrometry [PDF]
Metrology and Measurement Systems, 2023 A contactless laser hygrometer based on light absorption by H2O molecules at 1392.5 nm is described. However, measurement results can be affected by optical noise when applied to an atmospheric tunnel or glass cuvette.
Tadeusz Stacewicz +2 more
doaj +1 more source
Absorption Spectroscopy in Dental Tissue Analysis
IEEE Access, 2023 Oral health problems are closely associated with the analysis of dental tissue changes and the stomatologic treatment that follows. This paper explores the use of diffuse reflectance spectroscopy in the detection of dental tissue disorders.
Ales Prochazka +2 more
doaj +1 more source
Ligand Assisted Control of Photoluminescence in Organometal Perovskite Nanocrystals
Eurasian Chemico-Technological Journal, 2021 Organometal perovskite nanocrystals have shown remarkable properties not only in photovoltaics, but also in light-emitting devices. In this work colloidal nanocrystals of organometal perovskite CH3NH3PbBr3 (MAPBr) with effective visible photoluminescence
K.S. Sekerbayev +3 more
doaj +1 more source
CHIMIA, 2021 Understanding light-induced processes in biological and human-made molecular systems is one of the main goals of physical chemistry. It has been known for years that the photoinduced dynamics of atomic nuclei can be studied by looking at the vibrational ...
Tomislav Begušić, Jirí Vaníček
doaj +1 more source
Applied Sciences, 2023 A tunable diode laser absorption spectroscopy (TDLAS)-based spectrometer employing a mid-infrared (Mid-IR) interband cascade laser (ICL) was developed and used to determine pressure broadening coefficients of two NO absorption transitions at 1914.98 cm−1
Sumit Agarwal +5 more
doaj +1 more source
Frontiers in Bioengineering and Biotechnology, 2023 Introduction: The Bouguer-Lambert-Beer law is widely used as the fundamental equation for quantification in absorption spectroscopy. However, deviations from the Bouguer-Lambert-Beer law have also been observed, such as chemical deviation and light ...
Yen-Cheng Yeh +7 more
doaj +1 more source
Tinaksite and Tokkoite: X-ray Powder Diffraction, Optical, and Vibrational Properties
Crystals, 2022 In this study, natural tinaksite (K2Ca2NaTi[Si7O18OH]O) and tokkoite (K2Ca4[Si7O18OH](OH,F)) collected in charoite rocks of the Murun alkaline massif (Siberia, Russia) were examined by X-ray diffraction and optical and vibrational spectroscopic methods ...
Ekaterina Kaneva, Roman Shendrik
doaj +1 more source
Molecules, 2009 Lignin composition (monolignol types of coniferyl, sinapyl or p-coumaryl alcohol) is causally related to biomass recalcitrance. We describe multiwavelength (220, 228, 240, 250, 260, 290, 295, 300, 310 or 320 nm) absorption spectroscopy of coniferyl ...
Anup Kumar Singh +3 more
doaj +1 more source
Sensors, 2014 The indolo[2,3-a]carbazole scaffold is a fused polyheteroaromatic system bearing two NH groups which suitably converge as hydrogen bond donor sites for the recognition of anions. A simple derivatisation of the indolocarbazole system at positions 1 and 10
Guzmán Sánchez +3 more
doaj +1 more source
Sensors, 2016 In this work we demonstrate the ability of a multifaceted N,N′-disubstituted urea to selectively recognize fluoride anion (F−) among other halides. This additional function is now added to its already reported organocatalytic and organogelator properties.
Jana Schiller +5 more
doaj +1 more source