Results 21 to 30 of about 835,988 (340)

Evaluation of degradation in chemical compounds of wood in historical buildings using FT-IR and FT-Raman vibrational spectroscopy

MADERAS : Ciencia y Tecnología, 2019
Vibrational spectroscopy approaches like FT-IR and FT-Raman, as analytical method, can be used to assess chemical changes in historical wood structures.
S. M. Moosavinejad, M. Madhoushi, M. Vakili, D. Rasouli   +3 more
semanticscholar   +1 more source

Aplicação de espectroscopias raman e infravermelho na identificação e quantificação de plastificantes em filmes comerciais de PVC esticável Application of infrared and raman techniques in the identification and quantification of plasticizers in commercial films of PVSC

Química Nova, 2009
This paper reports the use of Raman and infrared techniques for the qualitative and quantitative analysis of plasticizers in polyvinylchloride (PVC) commercial films.
Michele Lemos de Souza, Paola Corio, Marcia L. A. Temperini, José Aparício Temperini   +3 more
doaj   +1 more source

Effects of vinyl substitutions on resonance Raman spectra of (bacterio)chlorophylls [PDF]

, 1994
Soret resonance and Qy preresonance Raman spectra are reported and compared for a series of (bacterio)chlorophylls. Chlorophyll a, 2-acetylchlorophyll a, bacteriochlorophyll a and 2-vinylbacteriochlorophyll a were studied in the non-protic solvent ...
Boldt, Choi, Choi, Cotton, Deisenhofer, Donohoe, Fateley, Fischer, Fujiwara, Fujiwara, Kühlbrandt, Lee, Lutz, Lutz, Lutz, Lutz, Lutz, Matthews, Mattioli, Robert, Robert, Smith, Stuck, Willems   +23 more
core   +1 more source

Determination of ripeness stages of Mazafati variety of date fruit by Raman spectroscopy [PDF]

Journal of Agricultural Machinery, 2016
Introduction: The economical yield of date fruits depends on many factors (Al-Shahib and Marshall, 2003). One of them is harvesting in optimum stage.
R Khodabakhshian, B Emadi
doaj   +1 more source

Time-resolved Raman spectroscopy for in situ planetary mineralogy [PDF]

, 2010
Planetary mineralogy can be revealed through a variety of remote sensing and in situ investigations that precede any plans for eventual sample return. We briefly review those techniques and focus on the capabilities for on-surface in situ examination of ...
Blacksberg, Jordana, Gleckler, Anthony, Rossman, George R.   +2 more
core   +2 more sources

Spectroscopic Characterization and DFT Calculations on 1H-benzimidazole-2-carboxylic acid monohydrate Molecule

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2022
After first determining the optimized geometry of the 1H-benzimidazole-2-carboxylic acid monohydrate (1HBCM) molecule using the B3LYP/6-311+ + G (d, p) basis set, we investigated the spectroscopic properties, electronic properties and optical band gap of
Songül Çifçi, Mustafa Kurt, Emine Babur Şaş   +2 more
doaj   +1 more source

Vibrational analysis of Ag3(PO2NH)3, Na3(PO2NH)3.H2O, Na3(PO2NH)3.4H2O, [C(NH2)3]3(PO2NH)3.H2O and (NH4)4(PO2NH)4.4H2O [PDF]

, 2001
FT IR and FT Raman spectra of Ag3(PO2NH), (Compound I), Na3(PO2NH)3.H2O (Compound II), Na3(PO2NH)3.4H2O (Compound III), [C(NH2)3]3(PO2NH)3.H2O (Compound IV) and (NH4)4(PO2NH)4.4H2O (Compound V) are recorded and analyzed on the basis of the anions ...
Acharya, Annamma John, Daizy Philip, Fateley, Harcharras, Haresh, Herzog, Jayakumar, Joe, John, John, Kearly, Lazarev, Lunkwitz, Lunkwitz, Lunkwitz, Melnikova, Nakamoto, Norbert Stock, Olthof, Oxton, Pustinger, Rulmont, S. Devanarayanan, Steger, Steger, Steger, Steger, Stock, Stock, Stock, Stokes, Stokes, Sukova, Sukova, Sukova, Sukova, Wolfgang Schnick   +37 more
core   +1 more source

Raman spectroscopy mapping of changes in the organization and relative quantities of cell wall polymers in bast fiber cell walls of flax plants exposed to gravitropic stress

Frontiers in Plant Science, 2022
Flax is an important fiber crop that is subject to lodging. In order to gain more information about the potential role of the bast fiber cell wall in the return to the vertical position, 6-week-old flax plants were subjected to a long-term (6 week ...
Anne-Sophie Blervacq, Myriam Moreau, Anne Duputié, Isabelle De Waele, Ludovic Duponchel, Simon Hawkins   +5 more
doaj   +1 more source

FT-Raman and infrared spectroscopic study of aragonite-strontianite (CaxSr1-xC03) solid solution [PDF]

, 1997
Synthetic aragonite-strontianite solid-solution samples have been studied using dispersive IR and FT-Raman spectroscopy. In addition to the end-members, nine samples over a range of composition from Ca0,9Sr0,1CO3 to Ca0,1Sr0,9CO3 were analysed ...
Alía, J.M., Díaz de Mera, Y., Edwards, H.G.M., González Martín, Paloma, López Andrés, Sol   +4 more
core   +2 more sources

Characterization of 3 fluoro-4-formylphenylboronic acid molecule with Density Functional Teory

Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
The geometric structure of3-fluoro-4-fomylphenylboronic acid (3-4FPBA) molecule were investigated withDFT/B3LYP/6-311++G(d,p) basis set. Specra of the title molecule were observedby FT-IR and FT-Raman spectra.
Emine Babur Şaş, Mustafa Kurt
doaj   +1 more source