نتایج جستجو برای: ft ir analysis
تعداد نتایج: 2884900 فیلتر نتایج به سال:
Atomic force microscopy (AFM) is a useful tool for probing pressure sensitive surfaces (PSA) at the micron and sub-micron level. Investigators hope that the spatial resolution of microstructure will provide clues to function. Nevertheless, AFM cannot distinguish functional group chemistry associated with topology. In contrast, FT-IR imaging microscopy is an emerging technology that has the powe...
lta zeolite nanoparticles was successfully synthesized from clear solution under controlled conditions using hydrothermal method using tetramethyl ammonium hydroxide as a structural directing agent. the as-synthesized lta zeolite particles were characterized by powder x-ray diffraction (xrd) analysis, scanning electron microscopy (sem), fourier transform infrared (ft-ir) spectroscopy, energy di...
Rapid and accurate identification of enterococci at the species level is an essential task in clinical microbiology since these organisms have emerged as one of the leading causes of nosocomial infections worldwide. Vibrational spectroscopic techniques (infrared [IR] and Raman) could provide potential alternatives to conventional typing methods, because they are fast, easy to perform, and econo...
The FT-IR and FT-Raman spectra of p-hydroxy-N-(p-methoxy benzylidene) aniline have been recorded in the region 4000-400 cm and 3500-100 cm, respectively. The optimized molecular geometry, vibrational frequencies in ground state have been calculated using density functional B3LYP methods (DFT) with 6-31+G(d,p) and 6-311++G(d,p) basis sets. The observed FT-IR and FT-Raman vibrational frequencies ...
In the present study 3-(2-Furyl) Propionicacid (C7H8O3) abbreviated as 32FPA which has biological applications had been investigated with Density functional theory calculations with Gaussian 03 software package. The FT-IR, FT-Raman, NMR spectra of the title compound was recorded and analyzed. The equilibrium geometry, bonding features and harmonic vibrational wave numbers were investigated with...
In the present work, we reported a combined experimental and theoretical study on molecular structure and vibrational analysis of N-phenylethanolamine (NPEA). FT-IR and FT-Raman spectra of the title compound in the solid phase are recorded in the region 4000–400 cm and 3500–100 cm, respectively. The structural and spectroscopic data of the molecule in the ground state is calculated using densit...
background: the seminal plasma is an excellent source for noninvasive detection of spermatogenesis. the seminal plasma of normospermic and azoospermic men has been analyzed for detection of spermatogenesis. methods: optical spectroscopy (attenuated total reflectance-infrared spectroscopy (atr-ir) and fourier transform infrared spectroscopy (ft-ir) has been used to analyze the seminal plasma and...
An evaluation of high-throughput Fourier-transform infrared spectroscopy (FT-IR) as a technology that could support a "metabonomics" component in toxicological studies of drug candidates is presented. The hypothesis tested in this study was that FT-IR had sufficient resolving power to discriminate between urine collected from control rat populations and rats subjected to treatment with a potent...
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