نتایج جستجو برای: fourier transform spectroscopy

تعداد نتایج: 294509  

Journal: :Physical review applied 2021

Harnessing the quantum interference of pair generation processes, infrared spectroscopy, based on nonlinear interferometers with visible-infrared photon-pair sources, enables extraction optical properties a sample through visible photon detection without need for an source or detector. We develop theoretical framework Fourier-transform (QFTIR) spectroscopy. The proposed Fourier analysis method,...

Journal: :Translational biophotonics 2021

Biofluid spectroscopy is an emerging technology in the field of clinical investigation, providing a simple way to extract diagnostic and observational information from easy acquire samples. Infrared well suited analyse large range biofluid samples, including blood its derivatives, due flexible sampling modes high sensitivity subtle biological changes. As advances towards clinic, factors influen...

Journal: :Ciencia E Tecnica Vitivinicola 2022

The complexity of the wine matrix makes monitoring winemaking process from grapes to final product crucial for industry. In this context, analytical methodologies that can combine good accuracy, robustness, high sample throughput, “green character”, and by preference real-time analysis, are on-demand create high-quality vitivinicultural products. last years, Fourier-transform Infrared Spectrosc...

راهله السادات میرسیفی نژاد نائینی عبدالرحیم داوری, مریم کشفی,

مقدمه: کارایی کلینیکی کامپوزیت‏های رزینی نوری وابسته به میزان پلیمریزه شدن آنها است. هدف از این مطالعه مقایسه درجه پلیمریزاسیون کامپوزیت‏های پک شونده و هیبرید با استفاده از تکنیک FTIR (Fourier Transform Infrared Spectroscopy) بود. مواد و روش‏ها: در این مطالعه آزمایشگاهی، تعداد 40 دیسک کامپوزیتی در 2 گروه کامپوزیت‏‏های Z250 و P60 تهیه شدند. هر یک از این گروه‏ها به 4 زیرگروه (ضخامت mm 2 و mm 5 ک...

Jagannath Roy Narayan Bandyopadhyay Saikat Maitra, Santanu Das

Al2O3-SiO2 diphasic gel was synthesized by sol gel route from aluminium nitrate and silicic acid following aqueous phase colloidal interaction. The precursor gel powder was thoroughly characterized by chemical analysis, measurement of surface area and bulk density measurement. The gel powder was further characterized by thermogravimetry, XRD diffraction stud...

Self-association of alcohols; including ethanol, methanol, cyclopentanol and octanol in separate mixtures with inert solvents have been studied using FT-IR spectroscopy. Except for the band at 3640 cm–1 in the IR spectrum of the alcohols which is due to the monomer species, the presence of other bands in the region of stretching vibrational frequencies of OH (3100-3700 cm–1) are attributed to t...

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