نتایج جستجو برای: fourier transform spectroscopy
تعداد نتایج: 294509 فیلتر نتایج به سال:
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,...
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...
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...
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...
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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