Results 1 to 10 of about 166,179,220 (189)
Известия высших учебных заведений: Геология и разведка, 2015 Varieties of quartz at silver occurrence Aid and silver veins of gold-rare metals deposit Ergelyah are studied. New data on the textures of comb quartz and earlier not documented the late coarse-grained quartz is presented; the IR- and X-ray luminescence
O. A. Sustavov
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Water release and homogenization by dynamic recrystallization of quartz [PDF]
Solid Earth, 2023 To evaluate changes in water distribution generated by dynamic recrystallization of quartz, we performed infrared (IR) spectroscopy mapping of quartz in deformed granite from the Wariyama uplift zone in NE Japan.
J. Fukuda, T. Okudaira, Y. Ohtomo
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Temperature Dependences of IR Spectra of Humic Substances of Brown Coal
Agronomy, 2021 The capabilities of temperature-monitored IR spectroscopy for studying the organic matter and mineral composition of humic substances (HS) were tested.
Dmitry S. Volkov +2 more
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AN ATR-FTIR PROCEDURE FOR QUANTITATIVE ANALYSIS OF MINERAL CONSTITUENTS AND KEROGEN IN OIL SHALE; pp. 344–356 [PDF]
Oil Shale, 2012 Principal component regression (PCR) was used to develop calibraÂtion and prediction models for determination of mineral content of complex mineral mixtures by utilizing attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectra.
SUJEEWA S. PALAYANGODA, QUOC P. NGUYEN
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Comptes Rendus. Géoscience, 2022 New Raman and NMR spectroscopy data on hydrous Ca aluminosilicate melts and glasses, with eutectic quartz–anorthite–wollastonite composition, are presented here.
Le Losq, Charles +2 more
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Synchrotron FTIR imaging of OH in quartz mylonites [PDF]
Solid Earth, 2017 Previous measurements of water in deformed quartzites using conventional Fourier transform infrared spectroscopy (FTIR) instruments have shown that water contents of larger grains vary from one grain to another.
A. K. Kronenberg +7 more
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Predicting ambient aerosol thermal–optical reflectance measurements from infrared spectra: elemental carbon [PDF]
Atmospheric Measurement Techniques, 2015 Elemental carbon (EC) is an important constituent of atmospheric particulate matter because it absorbs solar radiation influencing climate and visibility and it adversely affects human health.
A. M. Dillner, S. Takahama
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Molecules, 2022 Vibrational spectroscopic techniques, i.e., attenuated total reflectance infrared (ATR-IR), near infrared spectroscopy (NIRS) and Raman spectroscopy (RS), coupled with Partial Least Squares Regression (PLSR), were evaluated as cost-effective label-free ...
Suha Elderderi +9 more
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Chernozem Land Use Differentiation by Temperature-Dependent IR Spectra
Agronomy, 2023 Granulometric aggregate fractions (20 µm–2 mm) of chernozem soils with different agriculture-use histories (native steppe, permanent bare fallow, arable land, and shelterbelt) were investigated in mid-IR and far IR regions (4000–100 cm−1) by heating in ...
Mikhail A. Proskurnin +4 more
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Density Functional Study of Structural and Vibrational Properties of α-Moganite
Photonics, 2023 α-moganite is a recently discovered polymorph of silica, commonly intergrown with quartz in natural microcrystalline silica samples. An important challenge is finding an effective method for estimating its amount in a sample under study, which is ...
Dmitrii Pankin +5 more
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